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  1. IA Experts Listing 2014 | Department of Energy

    Energy Savers [EERE]

    IA Experts Listing 2014 IA Experts Listing 2014 PDF icon IA Experts Listing January 2014 More Documents & Publications Office of International Affairs Organization Chart PI...

  2. Rolling Hills (IA) | Open Energy Information

    Open Energy Info (EERE)

    Rolling Hills (IA) Jump to: navigation, search Name Rolling Hills (IA) Facility Rolling Hills (IA) Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service...

  3. Steamboat IA Geothermal Facility | Open Energy Information

    Open Energy Info (EERE)

    IA Geothermal Facility Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Steamboat IA Geothermal Facility General Information Name Steamboat IA Geothermal Facility...

  4. Category:Mason, IA | Open Energy Information

    Open Energy Info (EERE)

    Mason, IA Jump to: navigation, search Go Back to PV Economics By Location Media in category "Mason, IA" The following 16 files are in this category, out of 16 total....

  5. Defining photometric peculiar type Ia supernovae

    SciTech Connect (OSTI)

    González-Gaitán, S.; Pignata, G.; Förster, F.; Gutiérrez, C. P.; Bufano, F.; Galbany, L.; Hamuy, M.; De Jaeger, T.; Hsiao, E. Y.; Phillips, M. M.; Folatelli, G.; Anderson, J. P.

    2014-11-10

    We present a new photometric identification technique for SN 1991bg-like type Ia supernovae (SNe Ia), i.e., objects with light curve characteristics such as later primary maxima and the absence of a secondary peak in redder filters. This method is capable of selecting this sub-group from the normal type Ia population. Furthermore, we find that recently identified peculiar sub-types such as SNe Iax and super-Chandrasekhar SNe Ia have photometric characteristics similar to 91bg-like SNe Ia, namely, the absence of secondary maxima and shoulders at longer wavelengths, and can also be classified with our technique. The similarity of these different SN Ia sub-groups perhaps suggests common physical conditions. This typing methodology permits the photometric identification of peculiar SNe Ia in large upcoming wide-field surveys either to study them further or to obtain a pure sample of normal SNe Ia for cosmological studies.

  6. IA Blog Archive | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Blog Archive IA Blog Archive RSS May 31, 2016 IA Blog Archive Global Energy Leaders Gather in California to Drive Clean Energy Development and Deployment Goal of meetings will be to expand international collaboration in clean energy research, development, demonstration and deployment to combat climate change. May 18, 2016 IA Blog Archive 10 Ways the Clean Energy Ministerial Is Speeding Up the World's Clean Energy Revolution The world needs a lot more clean energy, and fast. Here are 10 ways the

  7. DOE - Office of Legacy Management -- Titus Metals - IA 04

    Office of Legacy Management (LM)

    Titus Metals - IA 04 FUSRAP Considered Sites Site: TITUS METALS ( IA.04 ) Eliminated from consideration under FUSRAP Designated Name: Not Designated Alternate Name: None Location: Waterloo , Iowa IA.04-1 Evaluation Year: 1987 IA.04-2 Site Operations: Extruded uranium billets to produce fuel plates for the Argonaut reactor in June, 1956. IA.04-1 IA.04-2 Site Disposition: Eliminated - Potential for contamination considered remote based on the limited scope of activities at the site and results of

  8. New approaches for modeling type Ia supernovae (Conference) ...

    Office of Scientific and Technical Information (OSTI)

    Type Ia supernovae (SNe Ia) are the largest thermonuclearexplosions in the Universe. Their light output can be seen across greatstances and has led to the discovery that the ...

  9. ASTRONOMY AND ASTROPHYSICS Dark Energy, Type Ia supernovae, radiative

    Office of Scientific and Technical Information (OSTI)

    of Oklahoma Univ. of Oklahoma 79 ASTRONOMY AND ASTROPHYSICS Dark Energy, Type Ia supernovae, radiative transfer, Dark Energy, Type Ia supernovae, radiative transfer, The...

  10. Constraining Cosmic Evolution of Type Ia Supernovae (Journal...

    Office of Scientific and Technical Information (OSTI)

    Constraining Cosmic Evolution of Type Ia Supernovae Citation Details In-Document Search Title: Constraining Cosmic Evolution of Type Ia Supernovae We present the first large-scale...

  11. Type Ia Supernovae Project at NERSC

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of star called a white dwarf. The majority of SN Ia explosions occur far away from our galaxy; yet, due to their enormous intrinsic brightness, outshining billions of stars, we can...

  12. IA Blog Archive | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    "always be five years away." For four key clean energy technologies, that clean energy future has already arrived. August 21, 2013 IA Blog Archive ActOnClimate: Secretary...

  13. Improved Distances to Type Ia Supernovae withMulticolor Light...

    Office of Scientific and Technical Information (OSTI)

    We present an updated version of the Multicolor Light Curve Shape method to measure distances to type Ia supernovae (SN Ia), incorporating new procedures for K-correction and ...

  14. Ideal bandpasses for type Ia supernova cosmology

    SciTech Connect (OSTI)

    Davis, Tamara M.; Schmidt, Brian P.; Kim, Alex G.

    2005-10-24

    To use type Ia supernovae as standard candles for cosmologywe need accurate broadband magnitudes. In practice the observed magnitudemay differ from the ideal magnitude-redshift relationship either throughintrinsic inhomogeneities in the type Ia supernova population or throughobservational error. Here we investigate how we can choose filterbandpasses to reduce the error caused by both these effects. We find thatbandpasses with large integral fluxes and sloping wings are best able tominimise several sources of observational error, and are also leastsensitive to intrinsic differences in type Ia supernovae. The mostimportant feature of a complete filter set for type Ia supernovacosmology is that each bandpass be a redshifted copy of the first. Wedesign practical sets of redshifted bandpasses that are matched totypical high resistivity CCD and HgCdTe infra-red detector sensitivities.These are designed to minimise systematic error in well observedsupernovae, final designs for specific missions should also considersignal-to-noise requirements and observing strategy. In addition wecalculate how accurately filters need to be calibrated in order toachieve the required photometric accuracy of future supernova cosmologyexperiments such as the SuperNova-Acceleration-Probe (SNAP), which is onepossible realisation of the Joint Dark-Energy mission (JDEM). We considerthe effect of possible periodic miscalibrations that may arise from theconstruction of an interference filter.

  15. A threat-based definition of IA- and IA-enabled products.

    SciTech Connect (OSTI)

    Shakamuri, Mayuri; Schaefer, Mark A.; Campbell, Philip LaRoche

    2010-07-01

    This paper proposes a definition of 'IA and IA-enabled products' based on threat, as opposed to 'security services' (i.e., 'confidentiality, authentication, integrity, access control or non-repudiation of data'), as provided by Department of Defense (DoD) Instruction 8500.2, 'Information Assurance (IA) Implementation.' The DoDI 8500.2 definition is too broad, making it difficult to distinguish products that need higher protection from those that do not. As a consequence the products that need higher protection do not receive it, increasing risk. The threat-based definition proposed in this paper solves those problems by focusing attention on threats, thereby moving beyond compliance to risk management. (DoDI 8500.2 provides the definitions and controls that form the basis for IA across the DoD.) Familiarity with 8500.2 is assumed.

  16. A threat-based definition of IA and IA-enabled products.

    SciTech Connect (OSTI)

    Shakamuri, Mayuri; Schaefer, Mark A.; Campbell, Philip LaRoche

    2010-09-01

    This paper proposes a definition of 'IA and IA-enabled products' based on threat, as opposed to 'security services' (i.e., 'confidentiality, authentication, integrity, access control or non-repudiation of data'), as provided by Department of Defense (DoD) Instruction 8500.2, 'Information Assurance (IA) Implementation.' The DoDI 8500.2 definition is too broad, making it difficult to distinguish products that need higher protection from those that do not. As a consequence the products that need higher protection do not receive it, increasing risk. The threat-based definition proposed in this paper solves those problems by focusing attention on threats, thereby moving beyond compliance to risk management. (DoDI 8500.2 provides the definitions and controls that form the basis for IA across the DoD.) Familiarity with 8500.2 is assumed.

  17. IA News Archive | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    News Archive IA News Archive RSS July 22, 2016 Energy Department Selects Argonne National Laboratory to Lead U.S. Consortium for New CERC Medium- and Heavy-Duty Truck Technical Track The New Consortium of University, Private Sector and National Laboratory Partners will Advance Collaboration between the U.S. and China on Truck Efficiency Technologies June 10, 2016 Energy Department Invests More than $10 Million in Efficient Lighting Research and Development New projects designed to save consumers

  18. Type Ia Supernova Hubble Residuals and Host-Galaxy Properties...

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Search Results Journal Article: Type Ia Supernova Hubble Residuals and ... as distinguished from previous works that use magnitude corrections as a ...

  19. CEPHEID CALIBRATIONS OF MODERN TYPE Ia SUPERNOVAE: IMPLICATIONS...

    Office of Scientific and Technical Information (OSTI)

    CEPHEID CALIBRATIONS OF MODERN TYPE Ia SUPERNOVAE: IMPLICATIONS FOR THE HUBBLE CONSTANT ... Country of Publication: United States Language: English Subject: 79 ASTROPHYSICS, ...

  20. Constraining Cosmic Evolution of Type Ia Supernovae

    SciTech Connect (OSTI)

    Foley, Ryan J.; Filippenko, Alexei V.; Aguilera, C.; Becker, A.C.; Blondin, S.; Challis, P.; Clocchiatti, A.; Covarrubias, R.; Davis, T.M.; Garnavich, P.M.; Jha, S.; Kirshner, R.P.; Krisciunas, K.; Leibundgut, B.; Li, W.; Matheson, T.; Miceli, A.; Miknaitis, G.; Pignata, G.; Rest, A.; Riess, A.G.; /UC, Berkeley, Astron. Dept. /Cerro-Tololo InterAmerican Obs. /Washington U., Seattle, Astron. Dept. /Harvard-Smithsonian Ctr. Astrophys. /Chile U., Catolica /Bohr Inst. /Notre Dame U. /KIPAC, Menlo Park /Texas A-M /European Southern Observ. /NOAO, Tucson /Fermilab /Chile U., Santiago /Harvard U., Phys. Dept. /Baltimore, Space Telescope Sci. /Johns Hopkins U. /Res. Sch. Astron. Astrophys., Weston Creek /Stockholm U. /Hawaii U. /Illinois U., Urbana, Astron. Dept.

    2008-02-13

    We present the first large-scale effort of creating composite spectra of high-redshift type Ia supernovae (SNe Ia) and comparing them to low-redshift counterparts. Through the ESSENCE project, we have obtained 107 spectra of 88 high-redshift SNe Ia with excellent light-curve information. In addition, we have obtained 397 spectra of low-redshift SNe through a multiple-decade effort at Lick and Keck Observatories, and we have used 45 ultraviolet spectra obtained by HST/IUE. The low-redshift spectra act as a control sample when comparing to the ESSENCE spectra. In all instances, the ESSENCE and Lick composite spectra appear very similar. The addition of galaxy light to the Lick composite spectra allows a nearly perfect match of the overall spectral-energy distribution with the ESSENCE composite spectra, indicating that the high-redshift SNe are more contaminated with host-galaxy light than their low-redshift counterparts. This is caused by observing objects at all redshifts with similar slit widths, which corresponds to different projected distances. After correcting for the galaxy-light contamination, subtle differences in the spectra remain. We have estimated the systematic errors when using current spectral templates for K-corrections to be {approx}0.02 mag. The variance in the composite spectra give an estimate of the intrinsic variance in low-redshift maximum-light SN spectra of {approx}3% in the optical and growing toward the ultraviolet. The difference between the maximum-light low and high-redshift spectra constrain SN evolution between our samples to be < 10% in the rest-frame optical.

  1. Search for surviving companions in type Ia supernova remnants

    SciTech Connect (OSTI)

    Pan, Kuo-Chuan; Ricker, Paul M.; Taam, Ronald E. E-mail: pmricker@illinois.edu E-mail: taam@asiaa.sinica.edu.tw

    2014-09-01

    The nature of the progenitor systems of type Ia supernovae (SNe Ia) is still unclear. One way to distinguish between the single-degenerate scenario and double-degenerate scenario for their progenitors is to search for the surviving companions (SCs). Using a technique that couples the results from multi-dimensional hydrodynamics simulations with calculations of the structure and evolution of main-sequence- (MS-) and helium-rich SCs, the color and magnitude of MS- and helium-rich SCs are predicted as functions of time. The SC candidates in Galactic type Ia supernova remnants (Ia SNR) and nearby extragalactic Ia SNRs are discussed. We find that the maximum detectable distance of MS SCs (helium-rich SCs) is 0.6-4 Mpc (0.4-16 Mpc), if the apparent magnitude limit is 27 in the absence of extinction, suggesting that the Large and Small Magellanic Clouds and the Andromeda Galaxy are excellent environments in which to search for SCs. However, only five Ia SNRs have been searched for SCs, showing little support for the standard channels in the singe-degenerate scenario. To better understand the progenitors of SNe Ia, we encourage the search for SCs in other nearby Ia SNRs.

  2. THE ULTRAVIOLET BRIGHTEST TYPE Ia SUPERNOVA 2011de

    SciTech Connect (OSTI)

    Brown, Peter J., E-mail: pbrown@physics.tamu.edu [George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Texas A and M University, Department of Physics and Astronomy, 4242 TAMU, College Station, TX 77843 (United States)

    2014-11-20

    We present and discuss the ultraviolet (UV)/optical photometric light curves and absolute magnitudes of the TypeIa supernova (SN Ia) 2011de from the Swift Ultraviolet/Optical Telescope. We find it to be the UV brightest SN Ia yet observedmore than a factor of 10 brighter than normal SNe Ia in the mid-ultraviolet. We find that the UV/optical brightness and broad light curve evolution can be modeled with additional flux from the shock of the ejecta hitting a relatively large red giant companion separated by 6 10{sup 13} cm. However, the post-maximum behavior of other UV-bright SNe Ia can also be modeled in a similar manner, including objects with UV spectroscopy or pre-maximum photometry which is inconsistent with this model. This suggests that similar UV luminosities can be intrinsic or caused by other forms of shock interaction. The high velocities reported for SN 2011de make it distinct from the UV-bright ''super-Chandrasekhar'' SNe Ia and the NUV-blue group of normal SNe Ia. SN 2011de is an extreme example of the UV variations in SNe Ia.

  3. DIVERSITY OF TYPE Ia SUPERNOVAE IMPRINTED IN CHEMICAL ABUNDANCES

    SciTech Connect (OSTI)

    Tsujimoto, Takuji [National Astronomical Observatory of Japan, Mitaka-shi, Tokyo 181-8588 (Japan); Shigeyama, Toshikazu, E-mail: taku.tsujimoto@nao.ac.jp [Research Center for the Early Universe, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan)

    2012-12-01

    A time delay of Type Ia supernova (SN Ia) explosions hinders the imprint of their nucleosynthesis on stellar abundances. However, some occasional cases give birth to stars that avoid enrichment of their chemical compositions by massive stars and thereby exhibit an SN-Ia-like elemental feature including a very low [Mg/Fe] ( Almost-Equal-To - 1). We highlight the elemental feature of Fe-group elements for two low-Mg/Fe objects detected in nearby galaxies, and propose the presence of a class of SNe Ia that yield the low abundance ratios of [Cr, Mn, Ni/Fe]. Our novel models of chemical evolution reveal that our proposed class of SNe Ia (slow SNe Ia) is associated with ones exploding on a long timescale after their stellar birth and give a significant impact on the chemical enrichment in the Large Magellanic Cloud (LMC). In the Galaxy, on the other hand, this effect is unseen due to the overwhelming enrichment by the major class of SNe Ia that explode promptly (prompt SNe Ia) and eject a large amount of Fe-group elements. This nicely explains the different [Cr, Mn, Ni/Fe] features between the two galaxies as well as the puzzling feature seen in the LMC stars exhibiting very low Ca but normal Mg abundances. Furthermore, the corresponding channel of slow SN Ia is exemplified by performing detailed nucleosynthesis calculations in the scheme of SNe Ia resulting from a 0.8 + 0.6 M{sub Sun} white dwarf merger.

  4. DOE - Office of Legacy Management -- Bendix Aviation Corp Pioneer Div - IA

    Office of Legacy Management (LM)

    05 Corp Pioneer Div - IA 05 FUSRAP Considered Sites Site: BENDIX AVIATION CORP., PIONEER DIV. (IA.05 ) Eliminated from consideration under FUSRAP Designated Name: Not Designated Alternate Name: Pioneer Division, Bendix Aviation Corporation Bendix Aviation Corporation Bendix Pioneer Division IA.05-1 IA.05-2 IA.05-3 Location: Davenport , Iowa IA.05-1 Evaluation Year: 1990 IA.05-2 IA.05-4 Site Operations: Conducted studies to investigate the feasibility of using sonic cleaning equipment to

  5. DOE - Office of Legacy Management -- Iowa Army Ammunition Plant - IA 02

    Office of Legacy Management (LM)

    Army Ammunition Plant - IA 02 FUSRAP Considered Sites Iowa Army Ammunition Plant, IA Alternate Name(s): Burlington Ordnance Plant Iowa Ordnance Plant Silas Mason Company IA.02-3 Location: Located in Township 70 North, Range 3 West, Section 32, 5th Principal Meridian, Des Moines County, Burlington, Iowa IA.02-1 IA.02-5 Historical Operations: Assembled nuclear weapons, primarily high explosive components and conducted explosives testing using the high explosive components and depleted uranium. AEC

  6. A STUDY OF CARBON FEATURES IN TYPE Ia SUPERNOVA SPECTRA (Journal...

    Office of Scientific and Technical Information (OSTI)

    A STUDY OF CARBON FEATURES IN TYPE Ia SUPERNOVA SPECTRA Citation Details In-Document Search Title: A STUDY OF CARBON FEATURES IN TYPE Ia SUPERNOVA SPECTRA One of the major ...

  7. An Analysis of Department of Defense Instruction 8500.2 'Information Assurance (IA) Implementation.'

    SciTech Connect (OSTI)

    Campbell, Philip LaRoche

    2012-01-01

    The Department of Defense (DoD) provides its standard for information assurance in its Instruction 8500.2, dated February 6, 2003. This Instruction lists 157 'IA Controls' for nine 'baseline IA levels.' Aside from distinguishing IA Controls that call for elevated levels of 'robustness' and grouping the IA Controls into eight 'subject areas' 8500.2 does not examine the nature of this set of controls, determining, for example, which controls do not vary in robustness, how this set of controls compares with other such sets, or even which controls are required for all nine baseline IA levels. This report analyzes (1) the IA Controls, (2) the subject areas, and (3) the Baseline IA levels. For example, this report notes that there are only 109 core IA Controls (which this report refers to as 'ICGs'), that 43 of these core IA Controls apply without variation to all nine baseline IA levels and that an additional 31 apply with variations. This report maps the IA Controls of 8500.2 to the controls in NIST 800-53 and ITGI's CoBIT. The result of this analysis and mapping, as shown in this report, serves as a companion to 8500.2. (An electronic spreadsheet accompanies this report.)

  8. Type Ia Supernova Spectral Line Ratios as LuminosityIndicators

    SciTech Connect (OSTI)

    Bongard, Sebastien; Baron, E.; Smadja, G.; Branch, David; Hauschildt, Peter H.

    2005-12-07

    Type Ia supernovae have played a crucial role in thediscovery of the dark energy, via the measurement of their light curvesand the determination of the peak brightness via fitting templates to theobserved lightcurve shape. Two spectroscopic indicators are also known tobe well correlated with peak luminosity. Since the spectroscopicluminosity indicators are obtained directly from observed spectra, theywill have different systematic errors than do measurements usingphotometry. Additionally, these spectroscopic indicators may be usefulfor studies of effects of evolution or age of the SNe~;Ia progenitorpopulation. We present several new variants of such spectroscopicindicators which are easy to automate and which minimize the effects ofnoise. We show that these spectroscopic indicators can be measured byproposed JDEM missions such as snap and JEDI.

  9. Next-Generation Petascale Simulations of Type Ia Supernovae | Argonne

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Leadership Computing Facility deflagration to detonation transition model Deflagration to detonation transition model. Min lOng, Dan van Rossum, Sean Couch, George Jordan, Brad Gallagher, Don Lamb, University of Chicago; Michael E. Papka, Argonne National Laboratory/University of Chicago Next-Generation Petascale Simulations of Type Ia Supernovae PI Name: Don Lamb PI Email: lamb@oddjob.uchicago.edu Institution: The University of Chicago Allocation Program: INCITE Allocation Hours at ALCF:

  10. Microsoft PowerPoint - IEEE IAS PES 102313.pptx

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    DOE's ARRA Smart Grid Program Steve Bossart, Senior Energy Analyst IEEE IAS/PES Pittsburgh Section October 23, 2013 # Topics * OE ARRA Smart Grid Program * OE ARRA Smart Grid Progress * Results and Case Studies * Life After ARRA Smart Grid # DOE OE ARRA Smart Grid Program # American Recovery and Reinvestment Act ($4.5B) * Smart Grid Investment Grants (99 projects) - $3.4 billion Federal; $4.7 billion private sector - > 800 PMUs covering almost 100% of transmission - ~ 8000 distribution

  11. Power-law cosmology, SN Ia, and BAO

    SciTech Connect (OSTI)

    Dolgov, Aleksander; Halenka, Vitali; Tkachev, Igor E-mail: vithal@umich.edu

    2014-10-01

    We revise observational constraints on the class of models of modified gravity which at low redshifts lead to a power-law cosmology. To this end we use available public data on Supernova Ia and on baryon acoustic oscillations. We show that the expansion regime a(t)?t{sup ?} with ? close to 3/2 in a spatially flat universe is a good fit to these data.

  12. Signatures of a companion star in type Ia supernovae

    SciTech Connect (OSTI)

    Maeda, Keiichi; Kutsuna, Masamichi; Shigeyama, Toshikazu

    2014-10-10

    Although type Ia supernovae (SNe Ia) have been used as precise cosmological distance indicators, their progenitor systems remain unresolved. One of the key questions is whether there is a nondegenerate companion star at the time of a thermonuclear explosion of a white dwarf. In this paper, we investigate whether an interaction between the SN ejecta and the companion star may result in observable footprints around the maximum brightness and thereafter, by performing multidimensional radiation transfer simulations based on hydrodynamic simulations of the interaction. We find that such systems result in variations in various observational characteristics due to different viewing directions, and the predicted behaviors (redder and fainter for the companion direction) are the opposite of what were suggested by the previous study. The variations are generally modest and within observed scatters. However, the model predicts trends between some observables different from those observationally derived, so a large sample of SNe Ia with small calibration errors may be used to constrain the existence of such a companion star. The variations in different colors in optical band passes can be mimicked by external extinctions, so such an effect could be a source of scatter in the peak luminosity and derived distance. After the peak, hydrogen-rich materials expelled from the companion will manifest themselves in hydrogen lines, but Hα is extremely difficult to identify. Alternatively, we find that P{sub β} in postmaximum near-infrared spectra can potentially provide a powerful diagnostic.

  13. Type Ia Supernova Hubble Residuals and Host-Galaxy Properties (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | SciTech Connect Journal Article: Type Ia Supernova Hubble Residuals and Host-Galaxy Properties Citation Details In-Document Search Title: Type Ia Supernova Hubble Residuals and Host-Galaxy Properties Kim et al. (2013) [K13] introduced a new methodology for determining peak- brightness absolute magnitudes of type Ia supernovae from multi-band light curves. We examine the relation between their parameterization of light curves and Hubble residuals, based on photometry synthesized

  14. THE HYBRID CONe WD + He STAR SCENARIO FOR THE PROGENITORS OF TYPE Ia SUPERNOVAE

    SciTech Connect (OSTI)

    Wang, B.; Meng, X.; Liu, D.-D.; Han, Z.; Liu, Z.-W.

    2014-10-20

    Hybrid CONe white dwarfs (WDs) have been suggested to be possible progenitors of type Ia supernovae (SNe Ia). In this Letter, we systematically studied the hybrid CONe WD + He star scenario for the progenitors of SNe Ia, in which a hybrid CONe WD increases its mass to the Chandrasekhar mass limit by accreting He-rich material from a non-degenerate He star. We obtained the SN Ia birthrates and delay times for this scenario using to a series of detailed binary population synthesis simulations. The SN Ia birthrates for this scenario are ∼0.033-0.539 × 10{sup –3} yr{sup –1}, which roughly accounts for 1%-18% of all SNe Ia. The estimated delay times are ∼28 Myr-178 Myr, which makes these the youngest SNe Ia predicted by any progenitor model so far. We suggest that SNe Ia from this scenario may provide an alternative explanation for type Iax SNe. We also presented some properties of the donors at the point when the WDs reach the Chandrasekhar mass. These properties may be a good starting point for investigating the surviving companions of SNe Ia and for constraining the progenitor scenario studied in this work.

  15. Improved Dark Energy Constraints From ~ 100 New CfA Supernova Type Ia Light

    Office of Scientific and Technical Information (OSTI)

    Curves (Journal Article) | SciTech Connect Improved Dark Energy Constraints From ~ 100 New CfA Supernova Type Ia Light Curves Citation Details In-Document Search Title: Improved Dark Energy Constraints From ~ 100 New CfA Supernova Type Ia Light Curves We combine the CfA3 supernovae Type Ia (SN Ia) sample with samples from the literature to calculate improved constraints on the dark energy equation of state parameter, w. The CfA3 sample is added to the Union set of Kowalski et al. to form the

  16. The Carnegie Supernova Project: Intrinsic colors of type Ia supernovae

    SciTech Connect (OSTI)

    Burns, Christopher R.; Persson, S. E.; Freedman, Wendy L.; Madore, Barry F. [Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101 (United States); Stritzinger, Maximilian; Contreras, Carlos [Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C (Denmark); Phillips, M. M.; Hsiao, E. Y.; Boldt, Luis; Campillay, Abdo; Castelln, Sergio; Morrell, Nidia; Salgado, Francisco [Carnegie Institution of Washington, Las Campanas Observatory, Colina El Pino, Casilla 601 (Chile); Folatelli, Gaston [Kavli Institute for the Physics and Mathematics of the Universe, Todai Institutes for Advanced Study, the University of Tokyo, 277-8583 Kashiwa (Japan); Suntzeff, Nicholas B. [George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Texas A and M University, Department of Physics and Astronomy, College Station, TX 77843 (United States)

    2014-07-01

    We present an updated analysis of the intrinsic colors of Type Ia supernova (SNe Ia) using the latest data release of the Carnegie Supernova Project. We introduce a new light-curve parameter very similar to stretch that is better suited for fast-declining events, and find that these peculiar types can be seen as extensions to the population of 'normal' SNe Ia. With a larger number of objects, an updated fit to the Lira relation is presented along with evidence for a dependence on the late-time slope of the B V light-curves with stretch and color. Using the full wavelength range from u to H band, we place constraints on the reddening law for the sample as a whole and also for individual events/hosts based solely on the observed colors. The photometric data continue to favor low values of R{sub V} , though with large variations from event to event, indicating an intrinsic distribution. We confirm the findings of other groups that there appears to be a correlation between the derived reddening law, R{sub V} , and the color excess, E(B V), such that larger E(B V) tends to favor lower R{sub V} . The intrinsic u-band colors show a relatively large scatter that cannot be explained by variations in R{sub V} or by the Goobar power-law for circumstellar dust, but rather is correlated with spectroscopic features of the supernova and is therefore likely due to metallicity effects.

  17. Grouping normal type Ia supernovae by UV to optical color differences

    SciTech Connect (OSTI)

    Milne, Peter A.; Brown, Peter J.; Roming, Peter W. A.; Bufano, Filomena; Gehrels, Neil

    2013-12-10

    Observations of many Type Ia supernovae (SNe Ia) for multiple epochs per object with the Swift Ultraviolet Optical Telescope instrument have revealed that there exists order to the differences in the UV-optical colors of optically normal supernovae (SNe). We examine UV-optical color curves for 23 SNe Ia, dividing the SNe into four groups, and find that roughly one-third of 'NUV-blue' SNe Ia have bluer UV-optical colors than the larger 'NUV-red' group. Two minor groups are recognized, 'MUV-blue' and 'irregular' SNe Ia. While we conclude that the latter group is a subset of the NUV-red group, containing the SNe with the broadest optical peaks, we conclude that the 'MUV-blue' group is a distinct group. Separating into the groups and accounting for the time evolution of the UV-optical colors lowers the scatter in two NUV-optical colors (e.g., u v and uvw1 v) to the level of the scatter in b v. This finding is promising for extending the cosmological utilization of SNe Ia into the NUV. We generate spectrophotometry of 33 SNe Ia and determine the correct grouping for each. We argue that there is a fundamental spectral difference in the 2900-3500 wavelength range, a region suggested to be dominated by absorption from iron-peak elements. The NUV-blue SNe Ia feature less absorption than the NUV-red SNe Ia. We show that all NUV-blue SNe Ia in this sample also show evidence of unburned carbon in optical spectra, whereas only one NUV-red SN Ia features that absorption line. Every NUV-blue event also exhibits a low gradient of the Si II ?6355 absorption feature. Many NUV-red events also exhibit a low gradient, perhaps suggestive that NUV-blue events are a subset of the larger low-velocity gradient group.

  18. THE BIRTH RATE OF SNe Ia FROM HYBRID CONe WHITE DWARFS

    SciTech Connect (OSTI)

    Meng, Xiangcun [Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011 (China); Podsiadlowski, Philipp, E-mail: xiangcunmeng@ynao.ac.cn [Department of Astronomy, Oxford University, Oxford OX1 3RH (United Kingdom)

    2014-07-10

    Considering the uncertainties of the C-burning rate (CBR) and the treatment of convective boundaries, Chen et al. found that there is a regime where it is possible to form hybrid CONe white dwarfs (WDs), i.e., ONe WDs with carbon-rich cores. As these hybrid WDs can be as massive as 1.30 M {sub ?}, not much mass needs to be accreted for these objects to reach the Chandrasekhar limit and to explode as Type Ia supernovae (SNe Ia). We have investigated their contribution to the overall SN Ia birth rate and found that such SNe Ia tend to be relatively young with typical time delays between 0.1 and 1 Gyr, where some may be as young as 30 Myr. SNe Ia from hybrid CONe WDs may contribute several percent to all SNe Ia, depending on the common-envelope ejection efficiency and the CBR. We suggest that these SNe Ia may produce part of the 2002cx-like SN Ia class.

  19. Type Ia supernova rate studies from the SDSS-II Supernova Study

    SciTech Connect (OSTI)

    Dilday, Benjamin

    2008-08-01

    The author presents new measurements of the type Ia SN rate from the SDSS-II Supernova Survey. The SDSS-II Supernova Survey was carried out during the Fall months (Sept.-Nov.) of 2005-2007 and discovered ~ 500 spectroscopically confirmed SNe Ia with densely sampled (once every ~ 4 days), multi-color light curves. Additionally, the SDSS-II Supernova Survey has discovered several hundred SNe Ia candidates with well-measured light curves, but without spectroscopic confirmation of type. This total, achieved in 9 months of observing, represents ~ 15-20% of the total SNe Ia discovered worldwide since 1885. The author describes some technical details of the SN Survey observations and SN search algorithms that contributed to the extremely high-yield of discovered SNe and that are important as context for the SDSS-II Supernova Survey SN Ia rate measurements.

  20. On silicon group elements ejected by supernovae type IA

    SciTech Connect (OSTI)

    De, Soma; Timmes, F. X. [School of Earth and Space Exploration, Arizona State University, Tempe, AZ (United States); Brown, Edward F. [Joint Institute for Nuclear Astrophysics, University of Notre Dame, IN 46556 (United States); Calder, Alan C. [Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY (United States); Townsley, Dean M. [Department of Physics and Astronomy, The University of Alabama, Tuscaloosa, AL (United States); Athanassiadou, Themis [Swiss National Supercomputing Centre, Via Trevano 131, 6900 Lugano (Switzerland); Chamulak, David A. [Physics Division, Argonne National Laboratory, Argonne, IL (United States); Hawley, Wendy [Laboratoire d'Astrophysique de Marseille, Marseille cedex 13 F-13388 (France); Jack, Dennis, E-mail: somad@asu.edu [Departamento de Astronoma, Universidad de Guanajuato, Apartado Postal 144, 36000 Guanajuato (Mexico)

    2014-06-01

    There is evidence that the peak brightness of a Type Ia supernova is affected by the electron fraction Y {sub e} at the time of the explosion. The electron fraction is set by the aboriginal composition of the white dwarf and the reactions that occur during the pre-explosive convective burning. To date, determining the makeup of the white dwarf progenitor has relied on indirect proxies, such as the average metallicity of the host stellar population. In this paper, we present analytical calculations supporting the idea that the electron fraction of the progenitor systematically influences the nucleosynthesis of silicon group ejecta in Type Ia supernovae. In particular, we suggest the abundances generated in quasi-nuclear statistical equilibrium are preserved during the subsequent freeze-out. This allows potential recovery of Y {sub e} at explosion from the abundances recovered from an observed spectra. We show that measurement of {sup 28}Si, {sup 32}S, {sup 40}Ca, and {sup 54}Fe abundances can be used to construct Y {sub e} in the silicon-rich regions of the supernovae. If these four abundances are determined exactly, they are sufficient to recover Y {sub e} to 6%. This is because these isotopes dominate the composition of silicon-rich material and iron-rich material in quasi-nuclear statistical equilibrium. Analytical analysis shows the {sup 28}Si abundance is insensitive to Y {sub e}, the {sup 32}S abundance has a nearly linear trend with Y {sub e}, and the {sup 40}Ca abundance has a nearly quadratic trend with Y {sub e}. We verify these trends with post-processing of one-dimensional models and show that these trends are reflected in the model's synthetic spectra.

  1. CfA3: 185 TYPE Ia SUPERNOVA LIGHT CURVES FROM THE CfA

    SciTech Connect (OSTI)

    Hicken, Malcolm; Challis, Peter; Kirshner, Robert P.; Bakos, Gaspar; Berlind, Perry; Brown, Warren R.; Caldwell, Nelson; Calkins, Mike; Cho, Richard; Contreras, Maria; Jha, Saurabh; Matheson, Tom; Modjaz, Maryam; Rest, Armin; Michael Wood-Vasey, W.; Barton, Elizabeth J.; Bragg, Ann; Briceno, Cesar; Ciupik, Larry; Dendy, Kristi-Concannon E-mail: kirshner@cfa.harvard.edu

    2009-07-20

    We present multiband photometry of 185 type-Ia supernovae (SNe Ia), with over 11,500 observations. These were acquired between 2001 and 2008 at the F. L. Whipple Observatory of the Harvard-Smithsonian Center for Astrophysics (CfA). This sample contains the largest number of homogeneously observed and reduced nearby SNe Ia (z {approx}< 0.08) published to date. It more than doubles the nearby sample, bringing SN Ia cosmology to the point where systematic uncertainties dominate. Our natural system photometry has a precision of {approx}<0.02 mag in BVRIr'i' and {approx}<0.04 mag in U for points brighter than 17.5 mag. We also estimate a systematic uncertainty of 0.03 mag in our SN Ia standard system BVRIr'i' photometry and 0.07 mag for U. Comparisons of our standard system photometry with published SN Ia light curves and comparison stars, where available for the same SN, reveal agreement at the level of a few hundredths mag in most cases. We find that 1991bg-like SNe Ia are sufficiently distinct from other SNe Ia in their color and light-curve-shape/luminosity relation that they should be treated separately in light-curve/distance fitter training samples. The CfA3 sample will contribute to the development of better light-curve/distance fitters, particularly in the few dozen cases where near-infrared photometry has been obtained and, together, can help disentangle host-galaxy reddening from intrinsic supernova color, reducing the systematic uncertainty in SN Ia distances due to dust.

  2. Type Ia supernovae yielding distances with 3-4% precision (Journal...

    Office of Scientific and Technical Information (OSTI)

    A paper copy of this document is also available for sale to the public from the National Technical Information Service, Springfield, VA at www.ntis.gov. The luminosities of Type Ia ...

  3. File:USDA-CE-Production-GIFmaps-IA.pdf | Open Energy Information

    Open Energy Info (EERE)

    IA.pdf Jump to: navigation, search File File history File usage Iowa Ethanol Plant Locations Size of this preview: 776 600 pixels. Full resolution (1,650 1,275 pixels,...

  4. Low Mach Number Modeling of Type Ia Supernovae

    SciTech Connect (OSTI)

    Almgren, Ann S.; Bell, John B.; Rendleman, Charles A.; Zingale,Michael

    2005-08-05

    We introduce a low Mach number equation set for the large-scale numerical simulation of carbon-oxygen white dwarfs experiencing a thermonuclear deflagration. Since most of the interesting physics in a Type Ia supernova transpires at Mach numbers from 0.01 to 0.1, such an approach enables both a considerable increase in accuracy and savings in computer time compared with frequently used compressible codes. Our equation set is derived from the fully compressible equations using low Mach number asymptotics, but without any restriction on the size of perturbations in density or temperature. Comparisons with simulations that use the fully compressible equations validate the low Mach number model in regimes where both are applicable. Comparisons to simulations based on the more traditional an elastic approximation also demonstrate the agreement of these models in the regime for which the anelastic approximation is valid. For low Mach number flows with potentially finite amplitude variations in density and temperature, the low Mach number model overcomes the limitations of each of the more traditional models and can serve as the basis for an accurate and efficient simulation tool.

  5. Cosmological parameter uncertainties from SALT-II type Ia supernova light curve models

    SciTech Connect (OSTI)

    Mosher, J.; Sako, M. [Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104 (United States); Guy, J.; Astier, P.; Betoule, M.; El-Hage, P.; Pain, R.; Regnault, N. [LPNHE, CNRS/IN2P3, Universit Pierre et Marie Curie Paris 6, Universi Denis Diderot Paris 7, 4 place Jussieu, F-75252 Paris Cedex 05 (France); Kessler, R.; Frieman, J. A. [Kavli Institute for Cosmological Physics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637 (United States); Marriner, J. [Center for Particle Astrophysics, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510 (United States); Biswas, R.; Kuhlmann, S. [Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439 (United States); Schneider, D. P., E-mail: kessler@kicp.chicago.edu [Department of Astronomy and Astrophysics, The Pennsylvania State University, University Park, PA 16802 (United States)

    2014-09-20

    We use simulated type Ia supernova (SN Ia) samples, including both photometry and spectra, to perform the first direct validation of cosmology analysis using the SALT-II light curve model. This validation includes residuals from the light curve training process, systematic biases in SN Ia distance measurements, and a bias on the dark energy equation of state parameter w. Using the SN-analysis package SNANA, we simulate and analyze realistic samples corresponding to the data samples used in the SNLS3 analysis: ?120 low-redshift (z < 0.1) SNe Ia, ?255 Sloan Digital Sky Survey SNe Ia (z < 0.4), and ?290 SNLS SNe Ia (z ? 1). To probe systematic uncertainties in detail, we vary the input spectral model, the model of intrinsic scatter, and the smoothing (i.e., regularization) parameters used during the SALT-II model training. Using realistic intrinsic scatter models results in a slight bias in the ultraviolet portion of the trained SALT-II model, and w biases (w {sub input} w {sub recovered}) ranging from 0.005 0.012 to 0.024 0.010. These biases are indistinguishable from each other within the uncertainty; the average bias on w is 0.014 0.007.

  6. Type Ia supernovae from merging white dwarfs. II. Post-merger detonations

    SciTech Connect (OSTI)

    Raskin, Cody; Kasen, Daniel; Moll, Rainer; Woosley, Stan; Schwab, Josiah

    2014-06-10

    Merging carbon-oxygen (CO) white dwarfs are a promising progenitor system for Type Ia supernovae (SNe Ia), but the underlying physics and timing of the detonation are still debated. If an explosion occurs after the secondary star is fully disrupted, the exploding primary will expand into a dense CO medium that may still have a disk-like structure. This interaction will decelerate and distort the ejecta. Here we carry out multidimensional simulations of 'tamped' SN Ia models, using both particle and grid-based codes to study the merger and explosion dynamics and a radiative transfer code to calculate synthetic spectra and light curves. We find that post-merger explosions exhibit an hourglass-shaped asymmetry, leading to strong variations in the light curves with viewing angle. The two most important factors affecting the outcome are the scale height of the disk, which depends sensitively on the binary mass ratio, and the total {sup 56}Ni yield, which is governed by the central density of the remnant core. The synthetic broadband light curves rise and decline very slowly, and the spectra generally look peculiar, with weak features from intermediate mass elements but relatively strong carbon absorption. We also consider the effects of the viscous evolution of the remnant and show that a longer time delay between merger and explosion probably leads to larger {sup 56}Ni yields and more symmetrical remnants. We discuss the relevance of this class of aspherical 'tamped' SN Ia for explaining the class of 'super-Chandrasekhar' SN Ia.

  7. Ultraviolet observations of Super-Chandrasekhar mass type Ia supernova candidates with swift UVOT

    SciTech Connect (OSTI)

    Brown, Peter J.; Smitka, Michael T.; Krisciunas, Kevin; Wang, Lifan; Kuin, Paul; De Pasquale, Massimiliano; Scalzo, Richard; Holland, Stephen; Milne, Peter

    2014-05-20

    Among Type Ia supernovae (SNe Ia), a class of overluminous objects exist whose ejecta mass is inferred to be larger than the canonical Chandrasekhar mass. We present and discuss the UV/optical photometric light curves, colors, absolute magnitudes, and spectra of three candidate Super-Chandrasekhar mass SNe—2009dc, 2011aa, and 2012dn—observed with the Swift Ultraviolet/Optical Telescope. The light curves are at the broad end for SNe Ia, with the light curves of SN 2011aa being among the broadest ever observed. We find all three to have very blue colors which may provide a means of excluding these overluminous SNe from cosmological analysis, though there is some overlap with the bluest of 'normal' SNe Ia. All three are overluminous in their UV absolute magnitudes compared to normal and broad SNe Ia, but SNe 2011aa and 2012dn are not optically overluminous compared to normal SNe Ia. The integrated luminosity curves of SNe 2011aa and 2012dn in the UVOT range (1600-6000 Å) are only half as bright as SN 2009dc, implying a smaller {sup 56}Ni yield. While it is not enough to strongly affect the bolometric flux, the early time mid-UV flux makes a significant contribution at early times. The strong spectral features in the mid-UV spectra of SNe 2009dc and 2012dn suggest a higher temperature and lower opacity to be the cause of the UV excess rather than a hot, smooth blackbody from shock interaction. Further work is needed to determine the ejecta and {sup 56}Ni masses of SNe 2011aa and 2012dn and to fully explain their high UV luminosities.

  8. Strong near-infrared carbon in the Type Ia supernova iPTF13ebh

    SciTech Connect (OSTI)

    Hsiao, E. Y.; Burns, C. R.; Contreras, C.; Höflich, P.; Sand, D.; Marion, G. H.; Phillips, M. M.; Stritzinger, M.; González-Gaitán, S.; Mason, R. E.; Folatelli, G.; Parent, E.; Gall, C.; Amanullah, R.; Anupama, G. C.; Arcavi, I.; Banerjee, D. P. K.; Beletsky, Y.; Blanc, G. A.; Bloom, J. S.; Brown, P. J.; Campillay, A.; Cao, Y.; De Cia, A.; Diamond, T.; Freedman, W. L.; Gonzalez, C.; Goobar, A.; Holmbo, S.; Howell, D. A.; Johansson, J.; Kasliwal, M. M.; Kirshner, R. P.; Krisciunas, K.; Kulkarni, S. R.; Maguire, K.; Milne, P. A.; Morrell, N.; Nugent, P. E.; Ofek, E. O.; Osip, D.; Palunas, P.; Perley, D. A.; Persson, S. E.; Piro, A. L.; Rabus, M.; Roth, M.; Schiefelbein, J. M.; Srivastav, S.; Sullivan, M.; Suntzeff, N. B.; Surace, J.; Woźniak, P. R.; Yaron, O.

    2015-05-22

    We present near-infrared (NIR) time-series spectroscopy, as well as complementary ultraviolet (UV), optical, and NIR data, of the Type Ia supernova (SN Ia) iPTF13ebh, which was discovered within two days from the estimated time of explosion. The first NIR spectrum was taken merely 2.3 days after explosion and may be the earliest NIR spectrum yet obtained of a SN Ia. The most striking features in the spectrum are several NIR C I lines, and the C Iλ1.0693 μm line is the strongest ever observed in a SN Ia. Interestingly, no strong optical C II counterparts were found, even though the optical spectroscopic time series began early and is densely cadenced. Except at the very early epochs, within a few days from the time of explosion, we show that the strong NIR C I compared to the weaker optical C II appears to be general in SNe Ia. iPTF13ebh is a fast decliner with Δm15(B) = 1.79 ± 0.01, and its absolute magnitude obeys the linear part of the width-luminosity relation. It is therefore categorized as a “transitional” event, on the fast-declining end of normal SNe Ia as opposed to subluminous/91bg-like objects. iPTF13ebh shows NIR spectroscopic properties that are distinct from both the normal and subluminous/91bg-like classes, bridging the observed characteristics of the two classes. These NIR observations suggest that composition and density of the inner core are similar to that of 91bg-like events, and that it has a deep-reaching carbon burning layer that is not observed in more slowly declining SNe Ia. Furthermore, there is also a substantial difference between the explosion times inferred from the early-time light curve and the velocity evolution of the Si II λ0.6355 μm line, implying a long dark phase of ~4 days.

  9. Strong near-infrared carbon in the Type Ia supernova iPTF13ebh

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Hsiao, E. Y.; Burns, C. R.; Contreras, C.; Höflich, P.; Sand, D.; Marion, G. H.; Phillips, M. M.; Stritzinger, M.; González-Gaitán, S.; Mason, R. E.; et al

    2015-05-22

    We present near-infrared (NIR) time-series spectroscopy, as well as complementary ultraviolet (UV), optical, and NIR data, of the Type Ia supernova (SN Ia) iPTF13ebh, which was discovered within two days from the estimated time of explosion. The first NIR spectrum was taken merely 2.3 days after explosion and may be the earliest NIR spectrum yet obtained of a SN Ia. The most striking features in the spectrum are several NIR C I lines, and the C Iλ1.0693 μm line is the strongest ever observed in a SN Ia. Interestingly, no strong optical C II counterparts were found, even though themore » optical spectroscopic time series began early and is densely cadenced. Except at the very early epochs, within a few days from the time of explosion, we show that the strong NIR C I compared to the weaker optical C II appears to be general in SNe Ia. iPTF13ebh is a fast decliner with Δm15(B) = 1.79 ± 0.01, and its absolute magnitude obeys the linear part of the width-luminosity relation. It is therefore categorized as a “transitional” event, on the fast-declining end of normal SNe Ia as opposed to subluminous/91bg-like objects. iPTF13ebh shows NIR spectroscopic properties that are distinct from both the normal and subluminous/91bg-like classes, bridging the observed characteristics of the two classes. These NIR observations suggest that composition and density of the inner core are similar to that of 91bg-like events, and that it has a deep-reaching carbon burning layer that is not observed in more slowly declining SNe Ia. Furthermore, there is also a substantial difference between the explosion times inferred from the early-time light curve and the velocity evolution of the Si II λ0.6355 μm line, implying a long dark phase of ~4 days.« less

  10. Strong near-infrared carbon in the Type Ia supernova iPTF13ebh

    SciTech Connect (OSTI)

    Hsiao, E. Y.; Burns, C. R.; Contreras, C.; Hflich, P.; Sand, D.; Marion, G. H.; Phillips, M. M.; Stritzinger, M.; Gonzlez-Gaitn, S.; Mason, R. E.; Folatelli, G.; Parent, E.; Gall, C.; Amanullah, R.; Anupama, G. C.; Arcavi, I.; Banerjee, D. P. K.; Beletsky, Y.; Blanc, G. A.; Bloom, J. S.; Brown, P. J.; Campillay, A.; Cao, Y.; De Cia, A.; Diamond, T.; Freedman, W. L.; Gonzalez, C.; Goobar, A.; Holmbo, S.; Howell, D. A.; Johansson, J.; Kasliwal, M. M.; Kirshner, R. P.; Krisciunas, K.; Kulkarni, S. R.; Maguire, K.; Milne, P. A.; Morrell, N.; Nugent, P. E.; Ofek, E. O.; Osip, D.; Palunas, P.; Perley, D. A.; Persson, S. E.; Piro, A. L.; Rabus, M.; Roth, M.; Schiefelbein, J. M.; Srivastav, S.; Sullivan, M.; Suntzeff, N. B.; Surace, J.; Wo?niak, P. R.; Yaron, O.

    2015-05-22

    We present near-infrared (NIR) time-series spectroscopy, as well as complementary ultraviolet (UV), optical, and NIR data, of the Type Ia supernova (SN Ia) iPTF13ebh, which was discovered within two days from the estimated time of explosion. The first NIR spectrum was taken merely 2.3 days after explosion and may be the earliest NIR spectrum yet obtained of a SN Ia. The most striking features in the spectrum are several NIR C I lines, and the C I?1.0693 ?m line is the strongest ever observed in a SN Ia. Interestingly, no strong optical C II counterparts were found, even though the optical spectroscopic time series began early and is densely cadenced. Except at the very early epochs, within a few days from the time of explosion, we show that the strong NIR C I compared to the weaker optical C II appears to be general in SNe Ia. iPTF13ebh is a fast decliner with ?m15(B) = 1.79 0.01, and its absolute magnitude obeys the linear part of the width-luminosity relation. It is therefore categorized as a transitional event, on the fast-declining end of normal SNe Ia as opposed to subluminous/91bg-like objects. iPTF13ebh shows NIR spectroscopic properties that are distinct from both the normal and subluminous/91bg-like classes, bridging the observed characteristics of the two classes. These NIR observations suggest that composition and density of the inner core are similar to that of 91bg-like events, and that it has a deep-reaching carbon burning layer that is not observed in more slowly declining SNe Ia. Furthermore, there is also a substantial difference between the explosion times inferred from the early-time light curve and the velocity evolution of the Si II ?0.6355 ?m line, implying a long dark phase of ~4 days.

  11. TYPE Ia SUPERNOVA COLORS AND EJECTA VELOCITIES: HIERARCHICAL BAYESIAN REGRESSION WITH NON-GAUSSIAN DISTRIBUTIONS

    SciTech Connect (OSTI)

    Mandel, Kaisey S.; Kirshner, Robert P. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Foley, Ryan J., E-mail: kmandel@cfa.harvard.edu [Astronomy Department, University of Illinois at Urbana-Champaign, 1002 West Green Street, Urbana, IL 61801 (United States)

    2014-12-20

    We investigate the statistical dependence of the peak intrinsic colors of Type Ia supernovae (SNe Ia) on their expansion velocities at maximum light, measured from the Si II ?6355 spectral feature. We construct a new hierarchical Bayesian regression model, accounting for the random effects of intrinsic scatter, measurement error, and reddening by host galaxy dust, and implement a Gibbs sampler and deviance information criteria to estimate the correlation. The method is applied to the apparent colors from BVRI light curves and Si II velocity data for 79 nearby SNe Ia. The apparent color distributions of high-velocity (HV) and normal velocity (NV) supernovae exhibit significant discrepancies for B V and B R, but not other colors. Hence, they are likely due to intrinsic color differences originating in the B band, rather than dust reddening. The mean intrinsic B V and B R color differences between HV and NV groups are 0.06 0.02 and 0.09 0.02 mag, respectively. A linear model finds significant slopes of 0.021 0.006 and 0.030 0.009 mag (10{sup 3} km s{sup 1}){sup 1} for intrinsic B V and B R colors versus velocity, respectively. Because the ejecta velocity distribution is skewed toward high velocities, these effects imply non-Gaussian intrinsic color distributions with skewness up to +0.3. Accounting for the intrinsic-color-velocity correlation results in corrections to A{sub V} extinction estimates as large as 0.12 mag for HV SNe Ia and +0.06 mag for NV events. Velocity measurements from SN Ia spectra have the potential to diminish systematic errors from the confounding of intrinsic colors and dust reddening affecting supernova distances.

  12. Type Ia supernova rate measurements to redshift 2.5 from CANDELS: Searching for prompt explosions in the early universe

    SciTech Connect (OSTI)

    Rodney, Steven A.; Riess, Adam G.; Graur, Or; Jones, David O. [Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218 (United States); Strolger, Louis-Gregory; Dahlen, Tomas; Casertano, Stefano; Ferguson, Henry C.; Koekemoer, Anton M. [Space Telescope Science Institute, Baltimore, MD 21218 (United States); Dickinson, Mark E. [National Optical Astronomy Observatory, 950 North Cherry Avenue, Tucson, AZ 85719 (United States); Garnavich, Peter [Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States); Hayden, Brian [E.O. Lawrence Berkeley National Lab, 1 Cyclotron Road, Berkeley, CA 94720 (United States); Jha, Saurabh W.; McCully, Curtis; Patel, Brandon [Department of Physics and Astronomy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854 (United States); Kirshner, Robert P. [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States); Mobasher, Bahram [Department of Physics and Astronomy, University of California, Riverside, CA 92521 (United States); Weiner, Benjamin J. [Department of Astronomy, University of Arizona, Tucson, AZ 85721 (United States); Cenko, S. Bradley [Astrophysics Science Division, NASA Goddard Space Flight Center, Mail Code 661, Greenbelt, MD 20771 (United States); Clubb, Kelsey I. [Department of Astronomy, University of California, Berkeley, CA 94720 (United States); and others

    2014-07-01

    The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) was a multi-cycle treasury program on the Hubble Space Telescope (HST) that surveyed a total area of ?0.25 deg{sup 2} with ?900 HST orbits spread across five fields over three years. Within these survey images we discovered 65 supernovae (SNe) of all types, out to z ? 2.5. We classify ?24 of these as Type Ia SNe (SNe Ia) based on host galaxy redshifts and SN photometry (supplemented by grism spectroscopy of six SNe). Here we present a measurement of the volumetric SN Ia rate as a function of redshift, reaching for the first time beyond z = 2 and putting new constraints on SN Ia progenitor models. Our highest redshift bin includes detections of SNe that exploded when the universe was only ?3 Gyr old and near the peak of the cosmic star formation history. This gives the CANDELS high redshift sample unique leverage for evaluating the fraction of SNe Ia that explode promptly after formation (<500 Myr). Combining the CANDELS rates with all available SN Ia rate measurements in the literature we find that this prompt SN Ia fraction is f{sub P} = 0.53{sub stat0.10}{sup 0.09}{sub sys0.26}{sup 0.10}, consistent with a delay time distribution that follows a simple t {sup 1} power law for all times t > 40 Myr. However, mild tension is apparent between ground-based low-z surveys and space-based high-z surveys. In both CANDELS and the sister HST program CLASH (Cluster Lensing And Supernova Survey with Hubble), we find a low rate of SNe Ia at z > 1. This could be a hint that prompt progenitors are in fact relatively rare, accounting for only 20% of all SN Ia explosionsthough further analysis and larger samples will be needed to examine that suggestion.

  13. SNe Ia tests of quintessence tracker cosmology in an anisotropic background

    SciTech Connect (OSTI)

    Miranda, W.; Carneiro, S.; Pigozzo, C. E-mail: saulo.carneiro@pq.cnpq.br

    2014-07-01

    We investigate the observational effects of a quintessence model in an anisotropic spacetime. The anisotropic metric is a non-rotating particular case of a generalized Gödel's metric and is classified as Bianchi III. This metric is an exact solution of the Einstein-Klein-Gordon field equations with an anisotropic scalar field ψ, which is responsible for the anisotropy of the spacetime geometry. We test the model against observations of type Ia supernovae, analyzing the SDSS dataset calibrated with the MLCS2k2 fitter, and the results are compared to standard quintessence models with Ratra-Peebles potentials. We obtain a good agreement with observations, with best values for the matter and curvature density parameters Ω{sub M} = 0.29 and Ω{sub k}= 0.01 respectively. We conclude that present SNe Ia observations cannot, alone, distinguish a possible anisotropic axis in the cosmos.

  14. THE EARLIEST NEAR-INFRARED TIME-SERIES SPECTROSCOPY OF A TYPE Ia SUPERNOVA

    SciTech Connect (OSTI)

    Hsiao, E. Y.; Phillips, M. M.; Morrell, N.; Contreras, C.; Roth, M.; Marion, G. H.; Kirshner, R. P.; Burns, C. R.; Freedman, W. L.; Persson, S. E.; Winge, C.; Gerardy, C. L.; Hoeflich, P.; Im, M.; Jeon, Y.; Pignata, G.; Stanishev, V.; and others

    2013-04-01

    We present ten medium-resolution, high signal-to-noise ratio near-infrared (NIR) spectra of SN 2011fe from SpeX on the NASA Infrared Telescope Facility (IRTF) and Gemini Near-Infrared Spectrograph (GNIRS) on Gemini North, obtained as part of the Carnegie Supernova Project. This data set constitutes the earliest time-series NIR spectroscopy of a Type Ia supernova (SN Ia), with the first spectrum obtained at 2.58 days past the explosion and covering -14.6 to +17.3 days relative to B-band maximum. C I {lambda}1.0693 {mu}m is detected in SN 2011fe with increasing strength up to maximum light. The delay in the onset of the NIR C I line demonstrates its potential to be an effective tracer of unprocessed material. For the first time in a SN Ia, the early rapid decline of the Mg II {lambda}1.0927 {mu}m velocity was observed, and the subsequent velocity is remarkably constant. The Mg II velocity during this constant phase locates the inner edge of carbon burning and probes the conditions under which the transition from deflagration to detonation occurs. We show that the Mg II velocity does not correlate with the optical light-curve decline rate {Delta}m{sub 15}(B). The prominent break at {approx}1.5 {mu}m is the main source of concern for NIR k-correction calculations. We demonstrate here that the feature has a uniform time evolution among SNe Ia, with the flux ratio across the break strongly correlated with {Delta}m{sub 15}(B). The predictability of the strength and the onset of this feature suggests that the associated k-correction uncertainties can be minimized with improved spectral templates.

  15. Comparing the host galaxies of type Ia, type II, and type Ibc supernovae

    SciTech Connect (OSTI)

    Shao, X.; Liang, Y. C.; Chen, X. Y.; Zhong, G. H.; Deng, L. C.; Zhang, B.; Shi, W. B.; Zhou, L.; Dennefeld, M.; Hammer, F.; Flores, H. E-mail: ycliang@bao.ac.cn

    2014-08-10

    We compare the host galaxies of 902 supernovae (SNe), including SNe Ia, SNe II, and SNe Ibc, which are selected by cross-matching the Asiago Supernova Catalog with the Sloan Digital Sky Survey (SDSS) Data Release 7. We selected an additional 213 galaxies by requiring the light fraction of spectral observations to be >15%, which could represent well the global properties of the galaxies. Among these 213 galaxies, 135 appear on the Baldwin-Phillips-Terlevich diagram, which allows us to compare the hosts in terms of whether they are star-forming (SF) galaxies, active galactic nuclei (AGNs; including composites, LINERs, and Seyfert 2s) or absorption-line galaxies (Absorps; i.e., their related emission lines are weak or non-existent). The diagrams related to the parameters D{sub n}(4000), H?{sub A}, stellar masses, star formation rates (SFRs), and specific SFRs for the SNe hosts show that almost all SNe II and most of the SNe Ibc occur in SF galaxies, which have a wide range of stellar masses and low D{sub n}(4000). The SNe Ia hosts as SF galaxies following similar trends. A significant fraction of SNe Ia occurs in AGNs and absorption-line galaxies, which are massive and have high D{sub n}(4000). The stellar population analysis from spectral synthesis fitting shows that the hosts of SNe II have a younger stellar population than hosts of SNe Ia. These results are compared with those of the 689 comparison galaxies where the SDSS fiber captures less than 15% of the total light. These comparison galaxies appear biased toward higher 12+log(O/H) (?0.1 dex) at a given stellar mass. Therefore, we believe the aperture effect should be kept in mind when the properties of the hosts for different types of SNe are discussed.

  16. Optical and ultraviolet observations of the narrow-lined type Ia SN 2012fr in NGC 1365

    SciTech Connect (OSTI)

    Zhang, Ju-Jia; Bai, Jin-Ming; Wang, Bo; Liu, Zheng-Wei [Yunnan Observatories (YNAO), Chinese Academy of Sciences, Kunming 650011 (China); Wang, Xiao-Feng; Zhao, Xu-Lin; Chen, Jun-Cheng [Physics Department and Tsinghua Center for Astrophysics (THCA), Tsinghua University, Beijing 100084 (China); Zhang, Tian-Meng, E-mail: jujia@ynao.ac.cn, E-mail: baijinming@ynao.ac.cn, E-mail: wang_xf@mail.tsinghua.edu.cn [National Astronomical Observatories of China (NAOC), Chinese Academy of Sciences, Beijing 100012 (China)

    2014-07-01

    Extensive optical and ultraviolet (UV) observations of the type Ia supernova (SN Ia) 2012fr are presented in this paper. It has a relatively high luminosity, with an absolute B-band peak magnitude of about 19.5 mag and a smaller post-maximum decline rate than normal SNe Ia (e.g., ?m {sub 15}(B) =0.85 0.05 mag). Based on the UV and optical light curves, we derived that a {sup 56}Ni mass of about 0.88 M {sub ?} was synthesized in the explosion. The earlier spectra are characterized by noticeable high-velocity features of Si II ?6355 and Ca II with velocities in the range of ?22, 000-25, 000 km s{sup 1}. At around the maximum light, these spectral features are dominated by the photospheric components which are noticeably narrower than normal SNe Ia. The post-maximum velocity of the photosphere remains almost constant at ?12,000 km s{sup 1} for about one month, reminiscent of the behavior of some luminous SNe Ia like SN 1991T. We propose that SN 2012fr may represent a subset of the SN 1991T-like SNe Ia viewed in a direction with a clumpy or shell-like structure of ejecta, in terms of a significant level of polarization reported in Maund et al. in 2013.

  17. A SUPER-EDDINGTON WIND SCENARIO FOR THE PROGENITORS OF TYPE Ia SUPERNOVAE

    SciTech Connect (OSTI)

    Ma, Xin; Chen, Xuefei; Chen, Hai-liang; Han, Zhanwen; Denissenkov, Pavel A. E-mail: cxf@ynao.ac.cn

    2013-12-01

    The accretion of hydrogen-rich material on to carbon-oxygen white dwarfs (CO WDs) is crucial for understanding Type Ia supernova (SN Ia) from the single-degenerate model, but this process has not been well understood due to the numerical difficulties in treating H and He flashes during the accretion. For CO WD masses from 0.5 to 1.378 M {sub ?} and accretion rates in the range from 10{sup 8} to 10{sup 5} M {sub ?} yr{sup 1}, we simulated the accretion of solar-composition material on to CO WDs using the state-of-the-art stellar evolution code of MESA. For comparison with steady-state models, we first ignored the contribution from nuclear burning to the luminosity when determining the Eddington accretion rate, and found that the properties of H burning in our accreting CO WD models are similar to those from the steady-state models, except that the critical accretion rates at which the WDs turn into red giants or H-shell flashes occur on their surfaces are slightly higher than those from the steady-state models. However, the super-Eddington wind is triggered at much lower accretion rates than previously thought, when the contribution of nuclear burning to the total luminosity is included. This super-Eddington wind naturally prevents the CO WDs with high accretion rates from becoming red giants, thus presenting an alternative to the optically thick wind proposed by Hachisu etal. Furthermore, the super-Eddington wind works in low-metallicity environments, which may explain SNe Ia observed at high redshifts.

  18. SPECTROPOLARIMETRY OF THE TYPE Ia SN 2007sr TWO MONTHS AFTER MAXIMUM LIGHT

    SciTech Connect (OSTI)

    Zelaya, P.; Quinn, J. R.; Clocchiatti, A.; Baade, D.; Patat, F.; Hoeflich, P.; Maund, J.; Wang, L.; Wheeler, J. C.

    2013-02-01

    We present late-time spectropolarimetric observations of SN 2007sr, obtained with the Very Large Telescope at the ESO Paranal Observatory when the object was 63 days after maximum light. The late-time spectrum displays strong line polarization in the Ca II absorption features. SN 2007sr adds to the case of some normal Type Ia supernovae that show high line polarization or repolarization at late times, a fact that might be connected with the presence of high-velocity features at early times.

  19. Spectroscopic Determination of the Low Redshift Type Ia Supernova Rate from the Sloan Digital Sky Survey

    SciTech Connect (OSTI)

    Krughoff, K. S.; Connolly, Andrew J.; Frieman, Joshua; SubbaRao, Mark; Kilper, Gary; Schneider, Donald P.

    2011-04-10

    Supernova rates are directly coupled to high mass stellar birth and evolution. As such, they are one of the few direct measures of the history of cosmic stellar evolution. In this paper we describe an probabilistic technique for identifying supernovae within spectroscopic samples of galaxies. We present a study of 52 type Ia supernovae ranging in age from -14 days to +40 days extracted from a parent sample of \\simeq 50,000 spectra from the SDSS DR5. We find a Supernova Rate (SNR) of 0.472^{+0.048}_{-0.039}(Systematic)^{+0.081}_{-0.071}(Statistical)SNu at a redshift of = 0.1. This value is higher than other values at low redshift at the 1{\\sigma}, but is consistent at the 3{\\sigma} level. The 52 supernova candidates used in this study comprise the third largest sample of supernovae used in a type Ia rate determination to date. In this paper we demonstrate the potential for the described approach for detecting supernovae in future spectroscopic surveys.

  20. TYCHO SN 1572: A NAKED Ia SUPERNOVA REMNANT WITHOUT AN ASSOCIATED AMBIENT MOLECULAR CLOUD

    SciTech Connect (OSTI)

    Tian, W. W.; Leahy, D. A.

    2011-03-10

    The historical supernova remnant (SNR) Tycho SN 1572 originates from the explosion of a normal Type Ia supernova that is believed to have originated from a carbon-oxygen white dwarf in a binary system. We analyze the 21 cm continuum, H I, and {sup 12}CO-line data from the Canadian Galactic Plane Survey in the direction of SN 1572 and the surrounding region. We construct H I absorption spectra to SN 1572 and three nearby compact sources. We conclude that SN 1572 has no molecular cloud interaction, which argues against previous claims that a molecular cloud is interacting with the SNR. This new result does not support a recent claim that dust, newly detected by AKARI, originates from such an SNR-cloud interaction. We suggest that the SNR has a kinematic distance of 2.5-3.0 kpc based on a nonlinear rotational curve model. Very high energy {gamma}-ray emission from the remnant has been detected by the VERITAS telescope, so our result shows that its origin should not be an SNR-cloud interaction. Both radio and X-ray observations support that SN 1572 is an isolated Type Ia SNR.

  1. Spectroscopic Observations and Analysis of the Unusual Type Ia SN1999ac

    SciTech Connect (OSTI)

    Garavini, G.; Aldering, G.; Amadon, A.; Amanullah, R.; Astier,P.; Balland, C.; Blanc, G.; Conley, A.; Dahlen, T.; Deustua, S.E.; Ellis,R.; Fabbro, S.; Fadeyev, V.; Fan, X.; Folatelli, G.; Frye, B.; Gates,E.L.; Gibbons, R.; Goldhaber, G.; Goldman, B.; Goobar, A.; Groom, D.E.; Haissinski, J.; Hardin, D.; Hook, I.; Howell, D.A.; Kent, S.; Kim, A.G.; Knop, R.A.; Kowalski, M.; Kuznetsova, N.; Lee, B.C.; Lidman, C.; Mendez,J.; Miller, G.J.; Moniez, M.; Mouchet, M.; Mourao, A.; Newberg, H.; Nobili, S.; Nugent, P.E.; Pain, R.; Perdereau, O.; Perlmutter, S.; Quimby, R.; Regnault, N.; Rich, J.; Richards, G.T.; Ruiz-Lapuente, P.; Schaefer, B.E.; Schahmaneche, K.; Smith, E.; Spadafora, A.L.; Stanishev,V.; Thomas, R.C.; Walton, N.A.; Wang, L.; Wood-Vasey, W.M.

    2005-07-12

    The authors present optical spectra of the peculiar Type Ia supernova (SN Ia) 1999ac. The data extend from -15 to +42 days with respect to B-band maximum and reveal an event that is unusual in several respects. prior to B-band maximum, the spectra resemble those of SN 1999aa, a slowly declining event, but possess stronger Si II and Ca II signatures (more characteristic of a spectroscopically normal SN). Spectra after B-band maximum appear more normal. The expansion velocities inferred from the Iron lines appear to be lower than average; whereas, the expansion velocity inferred from Calcium H and K are higher than average. The expansion velocities inferred from the Iron lines appear to be lower than average; whereas, the expansion velocity inferred from Calcium H and K are higher than average. The expansion velocities inferred from Si II are among the slowest ever observed, though SN 1999ac is not particularly dim. The analysis of the parameters v{sub 10}(Si II), R(Si II), v, and {Delta}m{sub 15} further underlines the unique characteristics of SN 1999ac. They find convincing evidence of C II {lambda}6580 in the day -15 spectrum with ejection velocity v > 16,000 km s{sup -1}, but this signature disappears by day -9. This rapid evolution at early times highlights the importance of extremely early-time spectroscopy.

  2. Consistent use of type Ia supernovae highly magnified by galaxy clusters to constrain the cosmological parameters

    SciTech Connect (OSTI)

    Zitrin, Adi [Cahill Center for Astronomy and Astrophysics, California Institute of Technology, MS 249-17, Pasadena, CA 91125 (United States); Redlich, Matthias [Universitt Heidelberg, Zentrum fr Astronomie, Institut fr Theoretische Astrophysik, Philosophenweg 12, D-69120 Heidelberg (Germany); Broadhurst, Tom, E-mail: adizitrin@gmail.com [Department of Theoretical Physics, University of Basque Country UPV/EHU, Bilbao (Spain)

    2014-07-01

    We discuss how Type Ia supernovae (SNe) strongly magnified by foreground galaxy clusters should be self-consistently treated when used in samples fitted for the cosmological parameters. While the cluster lens magnification of a SN can be well constrained from sets of multiple images of various background galaxies with measured redshifts, its value is typically dependent on the fiducial set of cosmological parameters used to construct the mass model. In such cases, one should not naively demagnify the observed SN luminosity by the model magnification into the expected Hubble diagram, which would create a bias, but instead take into account the cosmological parameters a priori chosen to construct the mass model. We quantify the effect and find that a systematic error of typically a few percent, up to a few dozen percent per magnified SN may be propagated onto a cosmological parameter fit unless the cosmology assumed for the mass model is taken into account (the bias can be even larger if the SN is lying very near the critical curves). We also simulate how such a bias propagates onto the cosmological parameter fit using the Union2.1 sample supplemented with strongly magnified SNe. The resulting bias on the deduced cosmological parameters is generally at the few percent level, if only few biased SNe are included, and increases with the number of lensed SNe and their redshift. Samples containing magnified Type Ia SNe, e.g., from ongoing cluster surveys, should readily account for this possible bias.

  3. Toward Exascale Computing of Type Ia and Ib,c Supernovae: V&V of Current

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Models | Argonne Leadership Computing Facility Toward Exascale Computing of Type Ia and Ib,c Supernovae: V&V of Current Models PI Name: Don Lamb PI Email: lamb@oddjob.uchicago.edu Institution: University Of Chicago Allocation Program: INCITE Allocation Hours at ALCF: 40,000,000 Year: 2012 Research Domain: Physics This project continues a program of verification and validation of Type Ia supernova models. More 3-D simulations of the explosion phase will be performed, along with 2-D

  4. Near-infrared line identification in type Ia supernovae during the transitional phase

    SciTech Connect (OSTI)

    Friesen, Brian; Baron, E.; Wisniewski, John P.; Miller, Timothy R.; Parrent, Jerod T.; Thomas, R. C.; Marion, G. H.

    2014-09-10

    We present near-infrared synthetic spectra of a delayed-detonation hydrodynamical model and compare them to observed spectra of four normal Type Ia supernovae ranging from day +56.5 to day +85. This is the epoch during which supernovae are believed to be undergoing the transition from the photospheric phase, where spectra are characterized by line scattering above an optically thick photosphere, to the nebular phase, where spectra consist of optically thin emission from forbidden lines. We find that most spectral features in the near-infrared can be accounted for by permitted lines of Fe II and Co II. In addition, we find that [Ni II] fits the emission feature near 1.98 μm, suggesting that a substantial mass of {sup 58}Ni exists near the center of the ejecta in these objects, arising from nuclear burning at high density.

  5. LAX XXlCfl jX?iK, Idd+?KYLViG?IA

    Office of Legacy Management (LM)

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  6. EARLY OBSERVATIONS AND ANALYSIS OF THE TYPE Ia SN 2014J IN M82

    SciTech Connect (OSTI)

    Marion, G. H.; Vinkó, J.; Sand, D. J.; Hsiao, E. Y.; Banerjee, D. P. K.; Joshi, V.; Venkataraman, V.; Ashok, N. M.; Valenti, S.; Howell, D. A.; Stritzinger, M. D.; Amanullah, R.; Johansson, J.; Binzel, R. P.; Bochanski, J. J.; Bryngelson, G. L.; Burns, C. R.; Drozdov, D.; Fieber-Beyer, S. K.; Graham, M. L.; and others

    2015-01-01

    We present optical and near infrared (NIR) observations of the nearby Type Ia SN 2014J. Seventeen optical and 23 NIR spectra were obtained from 10 days before (–10d) to 10 days after (+10d) the time of maximum B-band brightness. The relative strengths of absorption features and their patterns of development can be compared at one day intervals throughout most of this period. Carbon is not detected in the optical spectra, but we identify C I λ1.0693 in the NIR spectra. Mg II lines with high oscillator strengths have higher initial velocities than other Mg II lines. We show that the velocity differences can be explained by differences in optical depths due to oscillator strengths. The spectra of SN 2014J show that it is a normal SN Ia, but many parameters are near the boundaries between normal and high-velocity subclasses. The velocities for O I, Mg II, Si II, S II, Ca II, and Fe II suggest that SN 2014J has a layered structure with little or no mixing. That result is consistent with the delayed detonation explosion models. We also report photometric observations, obtained from –10d to +29d, in the UBVRIJH and K{sub s} bands. The template fitting package SNooPy is used to interpret the light curves and to derive photometric parameters. Using R{sub V} = 1.46, which is consistent with previous studies, SNooPy finds that A{sub V} = 1.80 for E(B – V){sub host} = 1.23 ± 0.06 mag. The maximum B-band brightness of –19.19 ± 0.10 mag was reached on February 1.74 UT ± 0.13 days and the supernova has a decline parameter, Δm {sub 15}, of 1.12 ± 0.02 mag.

  7. Measurements of the Rate of Type Ia Supernovae at Redshift z < ~0.3 from the SDSS-II Supernova Survey

    SciTech Connect (OSTI)

    Dilday, Benjamin; Smith, Mathew; Bassett, Bruce; Becker, Andrew; Bender, Ralf; Castander, Francisco; Cinabro, David; Filippenko, Alexei V.; Frieman, Joshua A.; Galbany, Lluis; Garnavich, Peter M.; /Notre Dame U. /Stockholm U., OKC /Stockholm U.

    2010-01-01

    We present a measurement of the volumetric Type Ia supernova (SN Ia) rate based on data from the Sloan Digital Sky Survey II (SDSS-II) Supernova Survey. The adopted sample of supernovae (SNe) includes 516 SNe Ia at redshift z {approx}< 0.3, of which 270 (52%) are spectroscopically identified as SNe Ia. The remaining 246 SNe Ia were identified through their light curves; 113 of these objects have spectroscopic redshifts from spectra of their host galaxy, and 133 have photometric redshifts estimated from the SN light curves. Based on consideration of 87 spectroscopically confirmed non-Ia SNe discovered by the SDSS-II SN Survey, we estimate that 2.04{sub -0.95}{sup +1.61}% of the photometric SNe Ia may be misidentified. The sample of SNe Ia used in this measurement represents an order of magnitude increase in the statistics for SN Ia rate measurements in the redshift range covered by the SDSS-II Supernova Survey. If we assume a SN Ia rate that is constant at low redshift (z < 0.15), then the SN observations can be used to infer a value of the SN rate of r{sub V} = (2.69{sub -0.30-0.01}{sup +0.34+0.21}) x 10{sup -5} SNe yr{sup -1} Mpc{sup -3} (H{sub 0}/(70 km s{sup -1} Mpc{sup -1})){sup 3} at a mean redshift of {approx} 0.12, based on 79 SNe Ia of which 72 are spectroscopically confirmed. However, the large sample of SNe Ia included in this study allows us to place constraints on the redshift dependence of the SN Ia rate based on the SDSS-II Supernova Survey data alone. Fitting a power-law model of the SN rate evolution, r{sub V} (z) = A{sub p} x ((1+z)/(1+z{sub 0})){sup {nu}}, over the redshift range 0.0 < z < 0.3 with z{sub 0} = 0.21, results in A{sub p} = (3.43{sub -0.15}{sup +0.15}) x 10{sup -5} SNe yr{sup -1} Mpc{sup -3} (H{sub 0}/(70 km s{sup -1} Mpc{sup -1})){sup 3} and {nu} = 2.04{sub -0.89}{sup +0.90}.

  8. EVOLUTION OF POST-IMPACT REMNANT HELIUM STARS IN TYPE Ia SUPERNOVA REMNANTS WITHIN THE SINGLE-DEGENERATE SCENARIO

    SciTech Connect (OSTI)

    Pan, Kuo-Chuan; Ricker, Paul M.; Taam, Ronald E. E-mail: pmricker@illinois.edu

    2013-08-10

    The progenitor systems of Type Ia supernovae (SNe Ia) are still under debate. Based on recent hydrodynamics simulations, non-degenerate companions in the single-degenerate scenario (SDS) should survive the supernova (SN) impact. One way to distinguish between the SDS and the double-degenerate scenario is to search for the post-impact remnant stars (PIRSs) in SN Ia remnants. Using a technique that combines multi-dimensional hydrodynamics simulations with one-dimensional stellar evolution simulations, we have examined the post-impact evolution of helium-rich binary companions in the SDS. It is found that these helium-rich PIRSs (He PIRSs) dramatically expand and evolve to a luminous phase (L {approx} 10{sup 4} L{sub Sun }) about 10 yr after an SN explosion. Subsequently, they contract and evolve to become hot blue-subdwarf-like (sdO-like) stars by releasing gravitational energy, persisting as sdO-like stars for several million years before evolving to the helium red-giant phase. We therefore predict that a luminous OB-like star should be detectable within {approx}30 yr after the SN explosion. Thereafter, it will shrink and become an sdO-like star in the central regions of SN Ia remnants within star-forming regions for SN Ia progenitors evolved via the helium-star channel in the SDS. These He PIRSs are predicted to be rapidly rotating (v{sub rot} {approx}> 50 km s{sup -1}) and to have high spatial velocities (v{sub linear} {approx}> 500 km s{sup -1}). Furthermore, if SN remnants have diffused away and are not recognizable at a later stage, He PIRSs could be an additional source of single sdO stars and/or hypervelocity stars.

  9. A Measurement of the Rate of Type Ia Supernovae in Galaxy Clusters from the SDSS-II Supernova Survey

    SciTech Connect (OSTI)

    Dilday, Benjamin; Bassett, Bruce; Becker, Andrew; Bender, Ralf; Castander, Francisco; Cinabro, David; Frieman, Joshua A.; Galbany, Lluis; Garnavich, Peter; Goobar, Ariel; Hopp, Ulrich; /Munich, Tech. U. /Munich U. Observ. /Tokyo U.

    2010-03-01

    We present measurements of the Type Ia supernova (SN) rate in galaxy clusters based on data from the Sloan Digital Sky Survey-II (SDSS-II) Supernova Survey. The cluster SN Ia rate is determined from 9 SN events in a set of 71 C4 clusters at z {le} 0.17 and 27 SN events in 492 maxBCG clusters at 0.1 {le} z {le} 0.3. We find values for the cluster SN Ia rate of (0.37{sub -0.12-0.01}{sup +0.17+0.01}) SNur h{sup 2} and (0.55{sub -0.11-0.01}{sup +0.13+0.02}) SNur h{sup 2} (SNux = 10{sup -12}L{sub x{circle_dot}}{sup -1} yr{sup -1}) in C4 and maxBCG clusters, respectively, where the quoted errors are statistical and systematic, respectively. The SN rate for early-type galaxies is found to be (0.31{sub -0.12-0.01}{sup +0.18+0.01}) SNur h{sup 2} and (0.49{sub -0.11-0.01}{sup +0.15+0.02}) SNur h{sup 2} in C4 and maxBCG clusters, respectively. The SN rate for the brightest cluster galaxies (BCG) is found to be (2.04{sub -1.11-0.04}{sup +1.99+0.07}) SNur h{sup 2} and (0.36{sub -0.30-0.01}{sup +0.84+0.01}) SNur h{sup 2} in C4 and maxBCG clusters, respectively. The ratio of the SN Ia rate in cluster early-type galaxies to that of the SN Ia rate in field early-type galaxies is 1.94{sub -0.91-0.015}{sup +1.31+0.043} and 3.02{sub -1.03-0.048}{sup +1.31+0.062}, for C4 and maxBCG clusters, respectively. The SN rate in galaxy clusters as a function of redshift, which probes the late time SN Ia delay distribution, shows only weak dependence on redshift. Combining our current measurements with previous measurements, we fit the cluster SN Ia rate data to a linear function of redshift, and find r{sub L} = [(0.49{sub -0.14}{sup +0.15}) + (0.91{sub -0.81}{sup +0.85}) x z] SNuB h{sup 2}. A comparison of the radial distribution of SNe in cluster to field early-type galaxies shows possible evidence for an enhancement of the SN rate in the cores of cluster early-type galaxies. With an observation of at most 3 hostless, intra-cluster SNe Ia, we estimate the fraction of cluster SNe that are

  10. PRODUCTION OF THE p-PROCESS NUCLEI IN THE CARBON-DEFLAGRATION MODEL FOR TYPE Ia SUPERNOVAE

    SciTech Connect (OSTI)

    Kusakabe, Motohiko; Iwamoto, Nobuyuki; Nomoto, Ken'ichi E-mail: iwamoto.nobuyuki@jaea.go.jp

    2011-01-01

    We calculate the nucleosynthesis of proton-rich isotopes in the carbon-deflagration model for Type Ia supernovae (SNe Ia). The seed abundances are obtained by calculating the s-process nucleosynthesis that is expected to occur in the repeating helium shell flashes on the carbon-oxygen (CO) white dwarf (WD) during mass accretion from a binary companion. When the deflagration wave passes through the outer layer of the CO WD, p-nuclei are produced by photodisintegration reactions on s-nuclei in a region where the peak temperature ranges from 1.9 to 3.6 x 10{sup 9} K. We confirm the sensitivity of the p-process on the initial distribution of s-nuclei. We show that the initial C/O ratio in the WD does not affect much the yield of p-nuclei. On the other hand, the abundance of {sup 22}Ne left after s-processing has a large influence on the p-process via the {sup 22}Ne({alpha},n) reaction. We find that about 50% of p-nuclides are co-produced when normalized to their solar abundances in all adopted cases of seed distribution. Mo and Ru, which are largely underproduced in Type II supernovae (SNe II), are produced more than in SNe II although they are underproduced with respect to the yield levels of other p-nuclides. The ratios between p-nuclei and iron in the ejecta are larger than the solar ratios by a factor of 1.2. We also compare the yields of oxygen, iron, and p-nuclides in SNe Ia and SNe II and suggest that SNe Ia could make a larger contribution than SNe II to the solar system content of p-nuclei.

  11. The crossing statistic: dealing with unknown errors in the dispersion of Type Ia supernovae

    SciTech Connect (OSTI)

    Shafieloo, Arman; Clifton, Timothy; Ferreira, Pedro E-mail: tclifton@astro.ox.ac.uk

    2011-08-01

    We propose a new statistic that has been designed to be used in situations where the intrinsic dispersion of a data set is not well known: The Crossing Statistic. This statistic is in general less sensitive than χ{sup 2} to the intrinsic dispersion of the data, and hence allows us to make progress in distinguishing between different models using goodness of fit to the data even when the errors involved are poorly understood. The proposed statistic makes use of the shape and trends of a model's predictions in a quantifiable manner. It is applicable to a variety of circumstances, although we consider it to be especially well suited to the task of distinguishing between different cosmological models using type Ia supernovae. We show that this statistic can easily distinguish between different models in cases where the χ{sup 2} statistic fails. We also show that the last mode of the Crossing Statistic is identical to χ{sup 2}, so that it can be considered as a generalization of χ{sup 2}.

  12. FIRST EVIDENCE OF GLOBULAR CLUSTER FORMATION FROM THE EJECTA OF PROMPT TYPE Ia SUPERNOVAE

    SciTech Connect (OSTI)

    Tsujimoto, Takuji [National Astronomical Observatory of Japan, Mitaka-shi, Tokyo 181-8588 (Japan); Bekki, Kenji, E-mail: taku.tsujimoto@nao.ac.jp [ICRAR, M468, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009 (Australia)

    2012-06-01

    Recent spectroscopic observations of globular clusters (GCs) in the Large Magellanic Cloud (LMC) have discovered that one of the intermediate-age GCs, NGC 1718, with [Fe/H] = -0.7 has an extremely low [Mg/Fe] ratio of {approx}-0.9. We propose that NGC 1718 was formed from the ejecta of Type Ia supernovae mixed with very metal-poor ([Fe/H] <-1.3) gas about {approx}2 Gyr ago. The proposed scenario is shown to be consistent with the observed abundances of Fe-group elements such as Cr, Mn, and Ni. In addition, compelling evidence for asymptotic giant branch stars playing a role in chemical enrichment during this GC formation is found. We suggest that the origin of the metal-poor gas is closely associated with efficient gas transfer from the outer gas disk of the Small Magellanic Cloud to the LMC disk. We anticipate that the outer part of the LMC disk contains field stars exhibiting significantly low [Mg/Fe] ratios, formed through the same process as NGC 1718.

  13. Constraints on the progenitor system of the type Ia supernova 2014J from pre-explosion Hubble space telescope imaging

    SciTech Connect (OSTI)

    Kelly, Patrick L.; Fox, Ori D.; Filippenko, Alexei V.; Shen, Ken J.; Zheng, WeiKang; Graham, Melissa L.; Tucker, Brad E.; Cenko, S. Bradley; Schaefer, Gail

    2014-07-20

    We constrain the properties of the progenitor system of the highly reddened Type Ia supernova (SN Ia) 2014J in Messier 82 (M82; d ? 3.5 Mpc). We determine the supernova (SN) location using Keck-II K-band adaptive optics images, and we find no evidence for flux from a progenitor system in pre-explosion near-ultraviolet through near-infrared Hubble Space Telescope (HST) images. Our upper limits exclude systems having a bright red giant companion, including symbiotic novae with luminosities comparable to that of RS Ophiuchi. While the flux constraints are also inconsistent with predictions for comparatively cool He-donor systems (T ? 35,000 K), we cannot preclude a system similar to V445 Puppis. The progenitor constraints are robust across a wide range of R{sub V} and A{sub V} values, but significantly greater values than those inferred from the SN light curve and spectrum would yield proportionally brighter luminosity limits. The comparatively faint flux expected from a binary progenitor system consisting of white dwarf stars would not have been detected in the pre-explosion HST imaging. Infrared HST exposures yield more stringent constraints on the luminosities of very cool (T < 3000 K) companion stars than was possible in the case of SN Ia 2011fe.

  14. Metabolomic profiling of the nectars of Aquilegia pubescens and <i>A. Canadensis

    SciTech Connect (OSTI)

    Noutsos, Christos; Perera, Ann M.; Nikolau, Basil J.; Seaver, Samuel M. D.; Ware, Doreen H.; Motta, Andrea

    2015-05-01

    To date, variation in nectar chemistry of flowering plants has not been studied in detail. Such variation exerts considerable influence on pollinator–plant interactions, as well as on flower traits that play important roles in the selection of a plant for visitation by specific pollinators. Over the past 60 years the Aquilegia genus has been used as a key model for speciation studies. In this study, we defined the metabolomic profiles of flower samples of two Aquilegia species, <i>A. Canadensis and <i>A. pubescens. We identified a total of 75 metabolites that were classified into six main categories: organic acids, fatty acids, amino acids, esters, sugars, and unknowns. The mean abundances of 25 of these metabolites were significantly different between the two species, providing insights into interspecies variation in floral chemistry. Using the PlantSEED biochemistry database, we found that the majority of these metabolites are involved in biosynthetic pathways. Finally, we explored the annotated genome of <i>A. coerulea, using the PlantSEED pipeline and reconstructed the metabolic network of Aquilegia. This network, which contains the metabolic pathways involved in generating the observed chemical variation, is now publicly available from the DOE Systems Biology Knowledge Base (KBase; http://kbase.us).

  15. Spectroscopic Properties of Star-Forming Host Galaxies and Type Ia Supernova Hubble Residuals in a Nearly Unbiased Sample

    SciTech Connect (OSTI)

    D'Andrea, Chris B.; et al.

    2011-12-20

    We examine the correlation between supernova host galaxy properties and their residuals on the Hubble diagram. We use supernovae discovered during the Sloan Digital Sky Survey II - Supernova Survey, and focus on objects at a redshift of z < 0.15, where the selection effects of the survey are known to yield a complete Type Ia supernova sample. To minimize the bias in our analysis with respect to measured host-galaxy properties, spectra were obtained for nearly all hosts, spanning a range in magnitude of -23 < M_r < -17. In contrast to previous works that use photometric estimates of host mass as a proxy for global metallicity, we analyze host-galaxy spectra to obtain gas-phase metallicities and star-formation rates from host galaxies with active star formation. From a final sample of ~ 40 emission-line galaxies, we find that light-curve corrected Type Ia supernovae are ~ 0.1 magnitudes brighter in high-metallicity hosts than in low-metallicity hosts. We also find a significant (> 3{\\sigma}) correlation between the Hubble residuals of Type Ia supernovae and the specific star-formation rate of the host galaxy. We comment on the importance of supernova/host-galaxy correlations as a source of systematic bias in future deep supernova surveys.

  16. A POSSIBLE EVOLUTIONARY SCENARIO OF HIGHLY MAGNETIZED SUPER-CHANDRASEKHAR WHITE DWARFS: PROGENITORS OF PECULIAR TYPE Ia SUPERNOVAE

    SciTech Connect (OSTI)

    Das, Upasana; Mukhopadhyay, Banibrata; Rao, A. R. E-mail: bm@physics.iisc.ernet.in

    2013-04-10

    Several recently discovered peculiar Type Ia supernovae seem to demand an altogether new formation theory that might help explain the puzzling dissimilarities between them and the standard Type Ia supernovae. The most striking aspect of the observational analysis is the necessity of invoking super-Chandrasekhar white dwarfs having masses {approx}2.1-2.8 M{sub Sun }, M{sub Sun} being the mass of Sun, as their most probable progenitors. Strongly magnetized white dwarfs having super-Chandrasekhar masses have already been established as potential candidates for the progenitors of peculiar Type Ia supernovae. Owing to the Landau quantization of the underlying electron degenerate gas, theoretical results yielded the observationally inferred mass range. Here, we sketch a possible evolutionary scenario by which super-Chandrasekhar white dwarfs could be formed by accretion on to a commonly observed magnetized white dwarf, invoking the phenomenon of flux freezing. This opens multiple possible evolution scenarios ending in supernova explosions of super-Chandrasekhar white dwarfs having masses within the range stated above. We point out that our proposal has observational support, such as the recent discovery of a large number of magnetized white dwarfs by the Sloan Digital Sky Survey.

  17. Radiogenic p-isotopes from type Ia supernova, nuclear physics uncertainties, and galactic chemical evolution compared with values in primitive meteorites

    SciTech Connect (OSTI)

    Travaglio, C.; Gallino, R.; Rauscher, T.; Dauphas, N.; Rpke, F. K.; Hillebrandt, W. E-mail: claudia.travaglio@b2fh.org

    2014-11-10

    The nucleosynthesis of proton-rich isotopes is calculated for multi-dimensional Chandrasekhar-mass models of Type Ia supernovae (SNe Ia) with different metallicities. The predicted abundances of the short-lived radioactive isotopes {sup 92}Nb, {sup 97,} {sup 98}Tc, and {sup 146}Sm are given in this framework. The abundance seeds are obtained by calculating s-process nucleosynthesis in the material accreted onto a carbon-oxygen white dwarf from a binary companion. A fine grid of s-seeds at different metallicities and {sup 13}C-pocket efficiencies is considered. A galactic chemical evolution model is used to predict the contribution of SN Ia to the solar system p-nuclei composition measured in meteorites. Nuclear physics uncertainties are critical to determine the role of SNe Ia in the production of {sup 92}Nb and {sup 146}Sm. We find that, if standard Chandrasekhar-mass SNe Ia are at least 50% of all SN Ia, they are strong candidates for reproducing the radiogenic p-process signature observed in meteorites.

  18. THE DETONATION MECHANISM OF THE PULSATIONALLY ASSISTED GRAVITATIONALLY CONFINED DETONATION MODEL OF Type Ia SUPERNOVAE

    SciTech Connect (OSTI)

    Jordan, G. C. IV; Graziani, C.; Weide, K.; Norris, J.; Hudson, R.; Lamb, D. Q.; Fisher, R. T.; Townsley, D. M.; Meakin, C.; Reid, L. B.

    2012-11-01

    We describe the detonation mechanism composing the 'pulsationally assisted' gravitationally confined detonation (GCD) model of Type Ia supernovae. This model is analogous to the previous GCD model reported in Jordan et al.; however, the chosen initial conditions produce a substantively different detonation mechanism, resulting from a larger energy release during the deflagration phase. The resulting final kinetic energy and {sup 56}Ni yields conform better to observational values than is the case for the 'classical' GCD models. In the present class of models, the ignition of a deflagration phase leads to a rising, burning plume of ash. The ash breaks out of the surface of the white dwarf, flows laterally around the star, and converges on the collision region at the antipodal point from where it broke out. The amount of energy released during the deflagration phase is enough to cause the star to rapidly expand, so that when the ash reaches the antipodal point, the surface density is too low to initiate a detonation. Instead, as the ash flows into the collision region (while mixing with surface fuel), the star reaches its maximally expanded state and then contracts. The stellar contraction acts to increase the density of the star, including the density in the collision region. This both raises the temperature and density of the fuel-ash mixture in the collision region and ultimately leads to thermodynamic conditions that are necessary for the Zel'dovich gradient mechanism to produce a detonation. We demonstrate feasibility of this scenario with three three-dimensional (3D), full star simulations of this model using the FLASH code. We characterized the simulations by the energy released during the deflagration phase, which ranged from 38% to 78% of the white dwarf's binding energy. We show that the necessary conditions for detonation are achieved in all three of the models.

  19. Persistent C II absorption in the normal type Ia supernova 2002fk

    SciTech Connect (OSTI)

    Cartier, Rgis; Zelaya, Paula [Millennium Institute of Astrophysics, Casilla 36-D, Santiago (Chile); Hamuy, Mario; Maza, Jos; Gonzlez, Luis; Huerta, Leonor [Departamento de Astronoma, Universidad de Chile, Casilla 36-D, Santiago (Chile); Pignata, Giuliano [Departamento Ciencias Fisicas, Universidad Andres Bello, Av. Repblica 252, Santiago (Chile); Frster, Francisco [Center for Mathematical Modelling, Universidad de Chile, Avenida Blanco Encalada 2120, Piso 7, Santiago (Chile); Folatelli, Gaston [Institute for the Physics and Mathematics of the Universe (IPMU), University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583 (Japan); Phillips, Mark M.; Morrell, Nidia; Contreras, Carlos; Roth, Miguel; Gonzlez, Sergio [Carnegie Institution of Washington, Las Campanas Observatory, Colina el Pino s/n, Casilla 601 (Chile); Krisciunas, Kevin; Suntzeff, Nicholas B. [Department of Physics and Astronomy, Texas A and M University, 4242 TAMU, College Station, TX 77843 (United States); Clocchiatti, Alejandro [Departamento de Astronoma y Astrofsica, Pontificia Universidad Catlica de Chile, Casilla 306, Santiago (Chile); Coppi, Paolo [Department of Astronomy, Yale University, New Haven, CT 06520-8101 (United States); Koviak, Kathleen, E-mail: rcartier@das.uchile.cl [Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena, CA 911901 (United States)

    2014-07-01

    We present well-sampled UBVRIJHK photometry of SN 2002fk starting 12 days before maximum light through 122 days after peak brightness, along with a series of 15 optical spectra from 4 to +95 days since maximum. Our observations show the presence of C II lines in the early-time spectra of SN 2002fk, expanding at 11,000 km s{sup 1} and persisting until 8 days past maximum light with a velocity of ?9000 km s{sup 1}. SN 2002fk is characterized by a small velocity gradient of v-dot {sub Si} {sub II}=26 km s{sup 1} day{sup 1}, possibly caused by an off-center explosion with the ignition region oriented toward the observer. The connection between the viewing angle of an off-center explosion and the presence of C II in the early-time spectrum suggests that the observation of C II could be also due to a viewing angle effect. Adopting the Cepheid distance to NGC 1309 we provide the first H {sub 0} value based on near-infrared (near-IR) measurements of a Type Ia supernova (SN) between 63.0 0.8 (3.4 systematic) and 66.7 1.0 (3.5 systematic) km s{sup 1} Mpc{sup 1}, depending on the absolute magnitude/decline rate relationship adopted. It appears that the near-IR yields somewhat lower (6%-9%) H {sub 0} values than the optical. It is essential to further examine this issue by (1) expanding the sample of high-quality near-IR light curves of SNe in the Hubble flow, and (2) increasing the number of nearby SNe with near-IR SN light curves and precise Cepheid distances, which affords the promise to deliver a more precise determination of H {sub 0}.

  20. MID-IR SPECTRA OF TYPE Ia SN 2014J IN M82 SPANNING THE FIRST 4 MONTHS

    SciTech Connect (OSTI)

    Telesco, Charles M.; Li, Dan; Barnes, Peter J.; Mariñas, Naibí; Zhang, Han; Höflich, Peter; Álvarez, Carlos; Fernández, Sergio; Rebolo, Rafael; Hough, James H.; Levenson, N. A.; Pantin, Eric; Roche, Patrick E-mail: phoeflich77@gmail.com

    2015-01-10

    We present a time series of 8-13 μm spectra and photometry for SN 2014J obtained 57, 81, 108, and 137 days after the explosion using CanariCam on the Gran Telescopio Canarias. This is the first mid-IR time series ever obtained for a Type Ia supernova (SN Ia). These observations can be understood within the framework of the delayed detonation model and the production of ∼0.6 M {sub ☉} of {sup 56}Ni, consistent with the observed brightness, the brightness decline relation, and the γ-ray fluxes. The [Co III] line at 11.888 μm is particularly useful for evaluating the time evolution of the photosphere and measuring the amount of {sup 56}Ni and thus the mass of the ejecta. Late-time line profiles of SN 2014J are rather symmetric and not shifted in the rest frame. We see argon emission, which provides a unique probe of mixing in the transition layer between incomplete burning and nuclear statistical equilibrium. We may see [Fe III] and [Ni IV] emission, both of which are observed to be substantially stronger than indicated by our models. If the latter identification is correct, then we are likely observing stable Ni, which might imply central mixing. In addition, electron capture, also required for stable Ni, requires densities larger than ∼1 × 10{sup 9} g cm{sup –3}, which are expected to be present only in white dwarfs close to the Chandrasekhar limit. This study demonstrates that mid-IR studies of SNe Ia are feasible from the ground and provide unique information, but it also indicates the need for better atomic data.

  1. Systematic uncertainties associated with the cosmological analysis of the first Pan-STARRS1 type Ia supernova sample

    SciTech Connect (OSTI)

    Scolnic, D.; Riess, A.; Brout, D.; Rodney, S. [Department of Physics and Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218 (United States); Rest, A. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Huber, M. E.; Tonry, J. L. [Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States); Foley, R. J.; Chornock, R.; Berger, E.; Soderberg, A. M.; Stubbs, C. W.; Kirshner, R. P.; Challis, P.; Czekala, I.; Drout, M. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Narayan, G. [Department of Physics, Harvard University, 17 Oxford Street, Cambridge, MA 02138 (United States); Smartt, S. J.; Botticella, M. T. [Astrophysics Research Centre, School of Mathematics and Physics, Queens University Belfast, Belfast BT7 1NN (United Kingdom); Schlafly, E. [Max Planck Institute for Astronomy, Konigstuhl 17, D-69117 Heidelberg (Germany); and others

    2014-11-01

    We probe the systematic uncertainties from the 113 Type Ia supernovae (SN Ia) in the Pan-STARRS1 (PS1) sample along with 197 SN Ia from a combination of low-redshift surveys. The companion paper by Rest et al. describes the photometric measurements and cosmological inferences from the PS1 sample. The largest systematic uncertainty stems from the photometric calibration of the PS1 and low-z samples. We increase the sample of observed Calspec standards from 7 to 10 used to define the PS1 calibration system. The PS1 and SDSS-II calibration systems are compared and discrepancies up to ?0.02 mag are recovered. We find uncertainties in the proper way to treat intrinsic colors and reddening produce differences in the recovered value of w up to 3%. We estimate masses of host galaxies of PS1 supernovae and detect an insignificant difference in distance residuals of the full sample of 0.037 0.031 mag for host galaxies with high and low masses. Assuming flatness and including systematic uncertainties in our analysis of only SNe measurements, we find w =?1.120{sub ?0.206}{sup +0.360}(Stat){sub ?0.291}{sup +0.269}(Sys). With additional constraints from Baryon acoustic oscillation, cosmic microwave background (CMB) (Planck) and H {sub 0} measurements, we find w=?1.166{sub ?0.069}{sup +0.072} and ?{sub m}=0.280{sub ?0.012}{sup +0.013} (statistical and systematic errors added in quadrature). The significance of the inconsistency with w = 1 depends on whether we use Planck or Wilkinson Microwave Anisotropy Probe measurements of the CMB: w{sub BAO+H0+SN+WMAP}=?1.124{sub ?0.065}{sup +0.083}.

  2. Nearby Supernova Factory Observations of SN 2005gj: Another TypeIa Supernova in a Massive Circumstellar Envelope

    SciTech Connect (OSTI)

    Aldering, G.; Antilogus, P.; Bailey, S.; Baltay, C.; Bauer, A.; Blanc, N.; Bongard, S.; Copin, Y.; Gangler, E.; Gilles, S.; Kessler, R.; Kocevski, D.; Lee, B.C.; Loken, S.; Nugent, P.; Pain, R.; Pecontal, E.; Pereira, R.; Perlmutter, S.; Rabinowitz, D.; Rigaudier, G.; Scalzo, R.; Smadja, G.; Thomas, R.C.; Wang, L.; Weaver, B.A.; Rabinowitz, D.; Bauer, A.

    2006-06-01

    We report the independent discovery and follow-up observations of supernova 2005gj by the Nearby Supernova Factory. This is the second confirmed case of a ''hybrid'' Type Ia/IIn supernova, which like the prototype SN 2002ic, we interpret as the explosion of a white dwarf interacting with a circumstellar medium. Our early-phase photometry of SN 2005gj shows that the strength of the interaction between the supernova ejecta and circumstellar material is much stronger than for SN 2002ic. Our .rst spectrum shows a hot continuum with broad and narrow H{alpha} emission. Later spectra, spanning over 4 months from outburst, show clear Type Ia features combined with broad and narrow H{gamma}, H{beta},H{alpha} and He I {lambda}{lambda}5876,7065 in emission. At higher resolution, P Cygni profiles are apparent. Surprisingly, we also observe an inverted P Cygni profile for [O III] {lambda}5007. We find that the lightcurve and measured velocity of the unshocked circumstellar material imply mass loss as recently as 8 years ago. This is in contrast to SN 2002ic, for which an inner cavity in the circumstellar material was inferred. Within the context of the thin-shell approximation, the early lightcurve is well-described by a flat radial density profile for the circumstellar material. However, our decomposition of the spectra into Type Ia and shock emission components allows for little obscuration of the supernova, suggesting an aspherical or clumpy distribution for the circumstellar material. We suggest that the emission line velocity profiles arise from electron scattering rather than the kinematics of the shock. This is supported by the inferred high densities, and the lack of evidence for evolution in the line widths. Ground- and space-based photometry, and Keck spectroscopy, of the host galaxy are used to ascertain that the host galaxy has low metallicity (Z/Z{sub {circle_dot}} < 0.3; 95% confidence) and that this galaxy is undergoing a significant star formation event that

  3. DISPLAYING THE HETEROGENEITY OF THE SN 2002cx-LIKE SUBCLASS OF TYPE Ia SUPERNOVAE WITH OBSERVATIONS OF THE Pan-STARRS-1 DISCOVERED SN 2009ku

    SciTech Connect (OSTI)

    Narayan, G.; Foley, R. J.; Berger, E.; Chornock, R.; Rest, A.; Soderberg, A. M.; Kirshner, R. P.; Botticella, M. T.; Smartt, S.; Valenti, S.; Huber, M. E.; Scolnic, D.; Grav, T.; Burgett, W. S.; Chambers, K. C.; Flewelling, H. A.; Gates, G.; Kaiser, N.; Magnier, E. A.; Morgan, J. S. E-mail: rfoley@cfa.harvard.edu

    2011-04-10

    SN 2009ku, discovered by Pan-STARRS-1, is a Type Ia supernova (SN Ia), and a member of the distinct SN 2002cx-like class of SNe Ia. Its light curves are similar to the prototypical SN 2002cx, but are slightly broader and have a later rise to maximum in g. SN 2009ku is brighter ({approx}0.6 mag) than other SN 2002cx-like objects, peaking at M{sub V} = -18.4 mag, which is still significantly fainter than typical SNe Ia. SN 2009ku, which had an ejecta velocity of {approx}2000 km s{sup -1} at 18 days after maximum brightness, is spectroscopically most similar to SN 2008ha, which also had extremely low-velocity ejecta. However, SN 2008ha had an exceedingly low luminosity, peaking at M{sub V} = -14.2 mag, {approx}4 mag fainter than SN 2009ku. The contrast of high luminosity and low ejecta velocity for SN 2009ku is contrary to an emerging trend seen for the SN 2002cx class. SN 2009ku is a counterexample of a previously held belief that the class was more homogeneous than typical SNe Ia, indicating that the class has a diverse progenitor population and/or complicated explosion physics. As the first example of a member of this class of objects from the new generation of transient surveys, SN 2009ku is an indication of the potential for these surveys to find rare and interesting objects.

  4. A Chandrasekhar mass progenitor for the Type Ia supernova remnant 3C 397 from the enhanced abundances of nickel and manganese

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Yamaguchi, Hiroya; Badenes, Carles; Foster, Adam R.; Bravo, Eduardo; Williams, Brian J.; Maeda, Keiichi; Nobukawa, Masayoshi; Eriksen, Kristoffer A.; Brickhouse, Nancy S.; Petre, Robert; et al

    2015-03-12

    Despite decades of intense efforts, many fundamental aspects of Type Ia supernovae (SNe Ia) remain elusive. One of the major open questions is whether the mass of an exploding white dwarf (WD) is close to the Chandrasekhar limit. Here, we report the detection of strong K-shell emission from stable Fe-peak elements in the Suzaku X-ray spectrum of the Type Ia supernova remnant (SNR) 3C 397. The high Ni/Fe and Mn/Fe mass ratios (0.11–0.24 and 0.018–0.033, respectively) in the hot plasma component that dominates the K-shell emission lines indicate a degree of neutronization in the supernova ejecta that can only bemore » achieved by electron capture in the dense cores of exploding WDs with a near-Chandrasekhar mass. This suggests a single-degenerate origin for 3C 397, since Chandrasekhar mass progenitors are expected naturally if the WD accretes mass slowly from a companion. Altogether with other results supporting the double-degenerate scenario, our work adds to the mounting evidence that both progenitor channels make a significant contribution to the SN Ia rate in star-forming galaxies.« less

  5. A Chandrasekhar mass progenitor for the Type Ia supernova remnant 3C 397 from the enhanced abundances of nickel and manganese

    SciTech Connect (OSTI)

    Yamaguchi, Hiroya; Badenes, Carles; Foster, Adam R.; Bravo, Eduardo; Williams, Brian J.; Maeda, Keiichi; Nobukawa, Masayoshi; Eriksen, Kristoffer A.; Brickhouse, Nancy S.; Petre, Robert; Koyama, Katsuji

    2015-03-12

    Despite decades of intense efforts, many fundamental aspects of Type Ia supernovae (SNe Ia) remain elusive. One of the major open questions is whether the mass of an exploding white dwarf (WD) is close to the Chandrasekhar limit. Here, we report the detection of strong K-shell emission from stable Fe-peak elements in the Suzaku X-ray spectrum of the Type Ia supernova remnant (SNR) 3C 397. The high Ni/Fe and Mn/Fe mass ratios (0.11–0.24 and 0.018–0.033, respectively) in the hot plasma component that dominates the K-shell emission lines indicate a degree of neutronization in the supernova ejecta that can only be achieved by electron capture in the dense cores of exploding WDs with a near-Chandrasekhar mass. This suggests a single-degenerate origin for 3C 397, since Chandrasekhar mass progenitors are expected naturally if the WD accretes mass slowly from a companion. Altogether with other results supporting the double-degenerate scenario, our work adds to the mounting evidence that both progenitor channels make a significant contribution to the SN Ia rate in star-forming galaxies.

  6. Cosmological constraints from measurements of type Ia supernovae discovered during the first 1.5 yr of the Pan-STARRS1 survey

    SciTech Connect (OSTI)

    Rest, A. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Scolnic, D.; Riess, A.; Rodney, S.; Brout, D. [Department of Physics and Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218 (United States); Foley, R. J.; Chornock, R.; Berger, E.; Soderberg, A. M.; Stubbs, C. W.; Kirshner, R. P.; Challis, P.; Czekala, I.; Drout, M. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Huber, M. E.; Tonry, J. L. [Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States); Narayan, G. [Department of Physics, Harvard University, 17 Oxford Street, Cambridge, MA 02138 (United States); Smartt, S. J. [Astrophysics Research Centre, School of Mathematics and Physics, Queens University Belfast, Belfast BT71NN (United Kingdom); Schlafly, E. [Max Planck Institute for Astronomy, Knigstuhl 17, D-69117 Heidelberg (Germany); Botticella, M. T. [INAF-Osservatorio Astronomico di Capodimonte, Salita Moiariello 16, I-80131 Napoli (Italy); and others

    2014-11-01

    We present griz {sub P1} light curves of 146 spectroscopically confirmed Type Ia supernovae (SNe Ia; 0.03 < z < 0.65) discovered during the first 1.5 yr of the Pan-STARRS1 Medium Deep Survey. The Pan-STARRS1 natural photometric system is determined by a combination of on-site measurements of the instrument response function and observations of spectrophotometric standard stars. We find that the systematic uncertainties in the photometric system are currently 1.2% without accounting for the uncertainty in the Hubble Space Telescope Calspec definition of the AB system. A Hubble diagram is constructed with a subset of 113 out of 146 SNe Ia that pass our light curve quality cuts. The cosmological fit to 310 SNe Ia (113 PS1 SNe Ia + 222 light curves from 197 low-z SNe Ia), using only supernovae (SNe) and assuming a constant dark energy equation of state and flatness, yields w=?1.120{sub ?0.206}{sup +0.360}(Stat){sub ?0.291}{sup +0.269}(Sys). When combined with BAO+CMB(Planck)+H {sub 0}, the analysis yields ?{sub M}=0.280{sub ?0.012}{sup +0.013} and w=?1.166{sub ?0.069}{sup +0.072} including all identified systematics. The value of w is inconsistent with the cosmological constant value of 1 at the 2.3? level. Tension endures after removing either the baryon acoustic oscillation (BAO) or the H {sub 0} constraint, though it is strongest when including the H {sub 0} constraint. If we include WMAP9 cosmic microwave background (CMB) constraints instead of those from Planck, we find w=?1.124{sub ?0.065}{sup +0.083}, which diminishes the discord to <2?. We cannot conclude whether the tension with flat ?CDM is a feature of dark energy, new physics, or a combination of chance and systematic errors. The full Pan-STARRS1 SN sample with ?three times as many SNe should provide more conclusive results.

  7. No X-rays from the very nearby type Ia SN 2014J: Constraints on its environment

    SciTech Connect (OSTI)

    Margutti, R.; Parrent, J.; Kamble, A.; Soderberg, A. M.; Milisavljevic, D.; Drout, M. R.; Kirshner, R. [Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138 (United States); Foley, R. J. [Astronomy Department, University of Illinois at Urbana-Champaign, 1002 W. Green Street, Urbana, IL 61801 (United States)

    2014-07-20

    Deep X-ray observations of the post-explosion environment around the very nearby Type Ia SN 2014J (d{sub L} = 3.5 Mpc) reveal no X-ray emission down to a luminosity L{sub x} < 7 10{sup 36} erg s{sup 1} (0.3-10 keV) at ?t ? 20 days after the explosion. We interpret this limit in the context of inverse Compton emission from upscattered optical photons by the supernova shock and constrain the pre-explosion mass-loss rate of the stellar progenitor system to be M-dot <10{sup ?9} M{sub ?} yr{sup ?1} (for wind velocity v{sub w} = 100 km s{sup 1}). Alternatively, the SN shock might be expanding into a uniform medium with density n{sub CSM} < 3 cm{sup 3}. These results rule out single-degenerate (SD) systems with steady mass loss until the terminal explosion and constrain the fraction of transferred material lost at the outer Lagrangian point to be ?1%. The allowed progenitors are (1) white dwarf-white dwarf progenitors, (2) SD systems with unstable hydrogen burning experiencing recurrent nova eruptions with recurrence time t < 300 yr, and (3) stars where the mass loss ceases before the explosion.

  8. ASYMMETRY IN THE OBSERVED METAL-RICH EJECTA OF THE GALACTIC TYPE IA SUPERNOVA REMNANT G299.22.9

    SciTech Connect (OSTI)

    Post, Seth; Park, Sangwook [Department of Physics, University of Texas at Arlington, Arlington, Box 19059, TX 76019 (United States); Badenes, Carles [Department of Physics and Astronomy and Pittsburgh Particle Physics, Astrophysics, and Cosmology Center (PITT-PACC), University of Pittsburgh, 3941 OHara Street, Pittsburgh, PA 15260 (United States); Burrows, David N. [Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802 (United States); Hughes, John P. [Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, NJ 08854-8019 (United States); Lee, Jae-Joon [Korea Astronomy and Space Science Institute, Daejeon 305-348 (Korea, Republic of); Mori, Koji [Department of Applied Physics, University of Miyazaki, 1-1 Gakuen Kibana-dai Nishi, Miyazaki 889-2192 (Japan); Slane, Patrick O., E-mail: seth.post@mavs.uta.edu, E-mail: badenes@pitt.edu, E-mail: burrows@astro.psu.edu, E-mail: jph@physics.rutgers.edu, E-mail: mori@astro.miyazaki-u.ac.jp, E-mail: slane@cfa.harvard.edu [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)

    2014-09-01

    We have performed a deep Chandra observation of the Galactic TypeIa supernova remnant G299.22.9. Here we report the initial results from our imaging and spectral analysis. The observed abundance ratios of the central ejecta are in good agreement with those predicted by delayed-detonation TypeIa supernovae models. We reveal inhomogeneous spatial and spectral structures of metal-rich ejecta in G299.22.9. The Fe/Si abundance ratio in the northern part of the central ejecta region is higher than that in the southern part. A significant continuous elongation of ejecta material extends out to the western outermost boundary of the remnant. In this western elongation, both the Si and Fe are enriched with a similar abundance ratio to that in the southern part of the central ejecta region. These structured distributions of metal-rich ejecta material suggest that this TypeIa supernova might have undergone a significantly asymmetric explosion and/or has been expanding into a structured medium.

  9. Expectations for the hard x-ray continuum and gamma-ray line fluxes from the typE IA supernova SN 2014J in M82

    SciTech Connect (OSTI)

    The, Lih-Sin [Department of Physics and Astronomy, Clemson University, SC 29634 (United States); Burrows, Adam, E-mail: tlihsin@clemson.edu, E-mail: burrows@astro.princeton.edu [Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States)

    2014-05-10

    The hard X-ray continuum and gamma-ray lines from a Type Ia supernova dominate its integrated photon emissions and can provide unique diagnostics of the mass of the ejecta, the {sup 56}Ni yield and spatial distribution, its kinetic energy and expansion speed, and the mechanism of explosion. Such signatures and their time behavior 'X-ray' the bulk debris field in direct fashion, and do not depend on the ofttimes problematic and elaborate UV, optical, and near-infrared spectroscopy and radiative transfer that have informed the study of these events for decades. However, to date no hard photons have ever been detected from a Type Ia supernova in explosion. With the advent of the supernova SN 2014J in M82, at a distance of ?3.5 Mpc, this situation may soon change. Both NuSTAR and INTEGRAL have the potential to detect SN 2014J, and, if spectra and light curves can be measured, would usefully constrain the various explosion models published during the last ?30 yr. In support of these observational campaigns, we provide predictions for the hard X-ray continuum and gamma-line emissions for 15 Type Ia explosion models gleaned from the literature. The model set, containing as it does deflagration, delayed detonation, merger detonation, pulsational delayed detonation, and sub-Chandrasekhar helium detonation models, collectively spans a wide range of properties, and hence signatures. We provide a brief discussion of various diagnostics (with examples), but importantly make the spectral and line results available electronically to aid in the interpretation of the anticipated data.

  10. THE EFFECT OF THE PRE-DETONATION STELLAR INTERNAL VELOCITY PROFILE ON THE NUCLEOSYNTHETIC YIELDS IN TYPE Ia SUPERNOVA

    SciTech Connect (OSTI)

    Kim, Yeunjin; Jordan, G. C. IV; Graziani, Carlo; Lamb, D. Q.; Truran, J. W.; Meyer, B. S.

    2013-07-01

    A common model of the explosion mechanism of Type Ia supernovae is based on a delayed detonation of a white dwarf. A variety of models differ primarily in the method by which the deflagration leads to a detonation. A common feature of the models, however, is that all of them involve the propagation of the detonation through a white dwarf that is either expanding or contracting, where the stellar internal velocity profile depends on both time and space. In this work, we investigate the effects of the pre-detonation stellar internal velocity profile and the post-detonation velocity of expansion on the production of {alpha}-particle nuclei, including {sup 56}Ni, which are the primary nuclei produced by the detonation wave. We perform one-dimensional hydrodynamic simulations of the explosion phase of the white dwarf for center and off-center detonations with five different stellar velocity profiles at the onset of the detonation. In order to follow the complex flows and to calculate the nucleosynthetic yields, approximately 10,000 tracer particles were added to every simulation. We observe two distinct post-detonation expansion phases: rarefaction and bulk expansion. Almost all the burning to {sup 56}Ni occurs only in the rarefaction phase, and its expansion timescale is influenced by pre-existing flow structure in the star, in particular by the pre-detonation stellar velocity profile. We find that the mass fractions of the {alpha}-particle nuclei, including {sup 56}Ni, are tight functions of the empirical physical parameter {rho}{sub up}/v{sub down}, where {rho}{sub up} is the mass density immediately upstream of the detonation wave front and v{sub down} is the velocity of the flow immediately downstream of the detonation wave front. We also find that v{sub down} depends on the pre-detonation flow velocity. We conclude that the properties of the pre-existing flow, in particular the internal stellar velocity profile, influence the final isotopic composition of burned

  11. Gorchakova-IA

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Atl anta, Georgia, March 19-23, 2001 1 Estimate of Horizontal Cloud Inhomogeneity Effect on Solar Radiative Fluxes for Conditions of Winter Zvenigorod Experiment I. A. Gorchakova, G. S. Golitsyn, and I. I. Mokhov Oboukhov Institute of Atmospheric Physics Russian Academy of Sciences Moscow, Russia T. B. Zhuravleva Institute of Atmospheric Optics Tomsk, Russia Introduction Study of physical phenomena determining large-scale dynamical and energetic processes in the atmosphere requires quite full

  12. Type Ia Supernovae

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    that the universe is undergoing an accelerated expansion - a result which fits the General Relativity if a yet unknown form of "dark" energy is assumed to dominate the...

  13. IA Blog Archive

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    2014 21:03:00 +0000 921386 at http:energy.gov Ministers Meet in Addis Ababa for U.S.-Africa Energy Ministerial http:energy.goviaarticlesministers-meet-addis-ababa-us-africa-...

  14. IA News Archive

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Dilma Rousseff of Brazil and he announced the creation of a Strategic Energy Dialogue (SED) to support the two countries' common goals of developing safe, secure and affordable...

  15. OPTICAL AND NEAR-INFRARED POLARIMETRY OF HIGHLY REDDENED Type Ia SUPERNOVA 2014J: PECULIAR PROPERTIES OF DUST IN M82

    SciTech Connect (OSTI)

    Kawabata, K. S.; Akitaya, H.; Itoh, R.; Moritani, Y. [Hiroshima Astrophysical Science Center, Hiroshima University, Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526 (Japan); Yamanaka, M. [Department of Physics, Faculty of Science and Engineering, Konan University, Okamoto, Kobe, Hyogo 658-8501 (Japan); Maeda, K.; Nogami, D. [Department of Astronomy, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502 (Japan); Ui, T.; Kawabata, M.; Mori, K.; Takaki, K.; Ueno, I.; Chiyonobu, S.; Harao, T.; Matsui, R.; Miyamoto, H.; Nagae, O. [Department of Physical Science, Hiroshima University, Kagamiyama, Higashi-Hiroshima 739-8526 (Japan); Nomoto, K.; Suzuki, N. [Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo, Kashiwa, Chiba 277-8583 (Japan); Tanaka, M., E-mail: kawabtkj@hiroshima-u.ac.jp [National Astronomical Observatory of Japan, Osawa, Mitaka, Tokyo 181-8588 (Japan); and others

    2014-11-01

    We present optical and near-infrared multi-band linear polarimetry of the highly reddened Type Ia supernova (SN) 2014J that appeared in M82. SN 2014J exhibits large polarization at shorter wavelengths, e.g., 4.8% in the B band, which decreases rapidly at longer wavelengths, while the position angle of the polarization remains at approximately 40 over the observed wavelength range. These polarimetric properties suggest that the observed polarization is likely predominantly caused by the interstellar dust within M82. Further analysis shows that the polarization peaks at a wavelengths much shorter than those obtained for the Galactic dust. The wavelength dependence of the polarization can be better described by an inverse power law rather than by the Serkowski law for Galactic interstellar polarization. These points suggest that the nature of the dust in M82 may be different from that in our Galaxy, with polarizing dust grains having a mean radius of <0.1 ?m.

  16. TYPE Ia SUPERNOVA REMNANT SHELL AT z = 3.5 SEEN IN THE THREE SIGHTLINES TOWARD THE GRAVITATIONALLY LENSED QSO B1422+231

    SciTech Connect (OSTI)

    Hamano, Satoshi; Kobayashi, Naoto [Institute of Astronomy, University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015 (Japan); Kondo, Sohei [Koyama Astronomical Observatory, Kyoto-Sangyo University, Motoyama, Kamigamo, Kita-Ku, Kyoto 603-8555 (Japan); Tsujimoto, Takuji [National Astronomical Observatory of Japan and Department of Astronomical Science, Graduate University for Advanced Studies, 2-21-1 Osawa, Mitaka, Tokyo 181-0015 (Japan); Okoshi, Katsuya [Faculty of Industrial Science and Technology, Tokyo University of Science, 102-1 Tomino, Oshamanbe, Hokkaido 049-3514 (Japan); Shigeyama, Toshikazu, E-mail: hamano@ioa.s.u-tokyo.ac.jp [Research Center for the Early Universe, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033 (Japan)

    2012-08-01

    Using the Subaru 8.2 m Telescope with the IRCS Echelle spectrograph, we obtained high-resolution (R = 10,000) near-infrared (1.01-1.38 {mu}m) spectra of images A and B of the gravitationally lensed QSO B1422+231 (z = 3.628) consisting of four known lensed images. We detected Mg II absorption lines at z = 3.54, which show a large variance of column densities ({approx}0.3 dex) and velocities ({approx}10 km s{sup -1}) between sightlines A and B with a projected separation of only 8.4h{sup -1}{sub 70} pc at that redshift. This is the smallest spatial structure of the high-z gas clouds ever detected after Rauch et al. found a 20 pc scale structure for the same z = 3.54 absorption system using optical spectra of images A and C. The observed systematic variances imply that the system is an expanding shell as originally suggested by Rauch et al. By combining the data for three sightlines, we managed to constrain the radius and expansion velocity of the shell ({approx}50-100 pc, 130 km s{sup -1}), concluding that the shell is truly a supernova remnant (SNR) rather than other types of shell objects, such as a giant H II region. We also detected strong Fe II absorption lines for this system, but with much broader Doppler width than that of {alpha}-element lines. We suggest that this Fe II absorption line originates in a localized Fe II-rich gas cloud that is not completely mixed with plowed ambient interstellar gas clouds showing other {alpha}-element low-ion absorption lines. Along with the Fe richness, we conclude that the SNR is produced by an SN Ia explosion.

  17. Lawrence Livermore National Laboratory Lawrence Livermore National...

    National Nuclear Security Administration (NNSA)

    "Green" supercomputer reduces energy footprint by 75% "Green" supercomputer reduces energy footprint by 75% Lawrence Livermore National Laboratory Lawrence Livermore National ...

  18. Livermore Field Office | National Nuclear Security Administration | (NNSA)

    National Nuclear Security Administration (NNSA)

    Livermore Field Office

  19. livermore field office

    National Nuclear Security Administration (NNSA)

    donation to those in need.

    Livermore Field Office sets core values as part of continuous improvement process http:nnsa.energy.govbloglivermore-field-office-sets-cor...

  20. IA News Archive | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    17, 2012 Deputy Secretary Poneman Statement on Second Meeting of the U.S. - South Africa Bilateral Energy Dialogue U.S. Deputy Secretary of Energy Daniel Poneman and South...

  1. Independent Activity Report, Livermore Site Office - January...

    Office of Environmental Management (EM)

    Livermore Site Office - January 2011 Independent Activity Report, Livermore Site Office - January 2011 January 2011 Livermore Site Office Facility Representative Program Assessment ...

  2. Analysis Activities at Lawrence Livermore National Laboratory...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Lawrence Livermore National Laboratory Analysis Activities at Lawrence Livermore National Laboratory Presentation on Lawrence Livermore's analysis activities to the DOE Systems ...

  3. Lawrence Livermore National Laboratory, P. O. Box

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    Security Administration | (NNSA) Lawrence Livermore National Lab Perforemance Evaluations FY 2016 FY 2016 Performance Evaluation Plan, Lawrence Livermore National Security, LLC FY 2015 FY 2015 Performance Evaluation Report, Lawrence Livermore National Security, LLC FY 2015 Performance Evaluation Report, Fee Determination Letter, Lawrence Livermore National Security, LLC FY 2015 Performance Evaluation Plan, Lawrence Livermore National Security, LLC FY 2014 FY 2014 Performance Evaluation

  4. Site Visit Report, Lawrence Livermore National Laboratory - February...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Lawrence Livermore National Laboratory - February 2011 Site Visit Report, Lawrence Livermore National Laboratory - February 2011 February 2011 Lawrence Livermore National ...

  5. ARM - Campaign Instrument - wfov-livermore

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    Campaign Instrument : Wide Field of View Cameras - Livermore (WFOV-LIVERMORE) Instrument Categories Cloud Properties, SurfaceSubsurface Properties Campaigns Spring UAV Campaign ...

  6. Edward Jones, Lawrence Livermore National Laboratory, Outcomes...

    Energy Savers [EERE]

    Edward Jones, Lawrence Livermore National Laboratory, Outcomes of U.S.-Japan Roundtable Edward Jones, Lawrence Livermore National Laboratory, Outcomes of U.S.-Japan Roundtable...

  7. Independent Oversight Review, Lawrence Livermore National Laboratory...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Lawrence Livermore National Laboratory - September 2013 September 2013 Review of the Fire Protection Program at Lawrence Livermore National Laboratory This report documents the...

  8. Independent Activity Report, Lawrence Livermore National Laboratory...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    October 2012 Independent Activity Report, Lawrence Livermore National Laboratory - October 2012 October 2012 Lawrence Livermore National Laboratory Site Lead Planning Activities...

  9. Livermore Field Office | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    Us Our Operations Management and Budget Office of Civil Rights Workforce Statistics Livermore Field Office Livermore Field Office FY15 Year End Report Semi Annual...

  10. Enforcement Letter, Lawrence Livermore National Security, LLC...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    LLC related to the Protection of Classified Information at the Lawrence Livermore ... the protection of classified information at the Lawrence Livermore National Laboratory. ...

  11. Independent Oversight Review, Lawrence Livermore National Laboratory...

    Broader source: Energy.gov (indexed) [DOE]

    Review of Preparedness for Severe Natural Phenomena Events at the Lawrence Livermore ... Nuclear Security Administration (NNSA) Livermore Field Office (LFO) and Lawrence ...

  12. Independent Activity Report, Lawrence Livermore National Laboratory...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    February 2013 Independent Activity Report, Lawrence Livermore National Laboratory - February 2013 February 2013 Lawrence Livermore National Laboratory Operational Drill at the B332 ...

  13. Consent Order, Lawrence Livermore National National Security...

    Office of Environmental Management (EM)

    Lawrence Livermore National National Security, LLC - WCO-2010-01 Consent Order, Lawrence Livermore National National Security, LLC - WCO-2010-01 October 29, 2010 Issued to Lawrence ...

  14. Enforcement Letter, Lawrence Livermore National Laboratory -...

    Broader source: Energy.gov (indexed) [DOE]

    the Lawrence Livermore National Laboratory On August 22, 1996, the U.S. Department of Energy (DOE) issued a nuclear safety Enforcement Letter to Lawrence Livermore National ...

  15. Independent Activity Report, Lawrence Livermore National Laboratory...

    Office of Environmental Management (EM)

    March 2011 Independent Activity Report, Lawrence Livermore National Laboratory - March 2011 March 2011 Lawrence Livermore National Laboratory Chronic Beryllium Disease Prevention ...

  16. Preliminary Notice of Violation, Lawrence Livermore National...

    Energy Savers [EERE]

    Lawrence Livermore National Security, LLC - September 25, 2014 Preliminary Notice of Violation, Lawrence Livermore National Security, LLC - September 25, 2014 September 25, 2014 ...

  17. Lawrence Livermore National Laboratory Federal Facility Compliance...

    Office of Environmental Management (EM)

    Federal Facility Compliance Act Order for Lawrence Livermore National Laboratory ... treatment of mixed waste at Lawrence Livermore National Laboratory Parties DOE; State ...

  18. livermore | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    livermore NNSA Livermore Field Office donates over 4,000 pounds of food to food banks The NNSA Livermore Field Office in California donated over 4,000 pounds of food to local food banks, food pantries and other local groups in support of the 2015 Feds Feed Families campaign. As part of the campaign LFO staff, family and friends worked with The Urban Farmers to pick 600 pounds of... Catch up on the latest Sandia California news Each summer, Sandia National Laboratories focuses on news and events

  19. Independent Oversight Inspection, Lawrence Livermore National Laboratory- June 2005

    Office of Energy Efficiency and Renewable Energy (EERE)

    Inspection of Emergency Management at the Livermore Site Office and Lawrence Livermore National Laboratory

  20. Independent Oversight Inspection, Lawrence Livermore National Laboratory- February 2009

    Office of Energy Efficiency and Renewable Energy (EERE)

    Inspection of Emergency Management at the Livermore Site Office and Lawrence Livermore National Laboratory

  1. Categorical Exclusion Determinations: Lawrence Livermore Site Office |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Lawrence Livermore Site Office Categorical Exclusion Determinations: Lawrence Livermore Site Office Categorical Exclusion Determinations issued by Lawrence Livermore Site Office. DOCUMENTS AVAILABLE FOR DOWNLOAD February 29, 2016 CX-014555: Categorical Exclusion Determination Livermore Site Heating, Ventilation and Air Conditioning Modernization CX(s) Applied: B1.3, B1.4, B1.11 Date: 02/29/2016 Location(s): California Offices(s): Lawrence Livermore Site Office December

  2. Livermore Contract Announcement | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Livermore Contract Announcement Livermore Contract Announcement May 8, 2007 - 12:45pm Addthis Remarks as Prepared for Energy Secretary Samuel Bodman Good afternoon. Thank you all for coming and welcome to the Lawrence Livermore National Laboratory employees who are watching this on our Webcast. I know my remarks are of special importance to you. The Lawrence Livermore National Laboratory opened in 1952 using the "team science" approach pioneered by Ernest O. Lawrence. Livermore was -

  3. Lawrence Livermore National Laboratory (LLNL): Hydrogen Research

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    63725 This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. Lawrence Livermore National Security, LLC Hydrogen Research at Lawrence Livermore National Laboratory Advanced Science and Technology for Carbonless transportation Salvador M. Aceves Lawrence Livermore National Laboratory LLNL-PRES-663725 2  Founded: 1952 as a Defense Technologies Laboratory  Location: Livermore, CA  Core

  4. Lawrence Livermore National Laboratory | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Lawrence Livermore National Laboratory Lawrence Livermore National Laboratory Lawrence Livermore National Laboratory | July 2011 Aerial View Lawrence Livermore National Laboratory | July 2011 Aerial View Lawrence Livermore National Laboratory's (LLNL) primary mission is research and development in support of national security. As a nuclear weapons design laboratory, LLNL has responsibilities in nuclear stockpile stewardship. LLNL also applies its expertise to prevent the spread and use of

  5. EIS-0028: Lawrence Livermore National Laboratory and Sandia National Laboratories- Livermore Sites, Livermore, CA

    Broader source: Energy.gov [DOE]

    The statement assesses the potential impacts associated with current operation of the Lawrence Livermore National Laboratory and Sandia National Laboratories , Livermore, adjacent sites. This includes the impacts from postulated accidents associated with the activities. Various effluents including radioactive ones are released to the environment. However, a continuing comprehensive monitoring program is carried out to assist in the control of hazardous effluents. Alternatives considered to current operation of the laboratories include: (1) shutdown and decommissioning, (2) total or partial relocation, (3) scaling down those operations having greatest impact , and (4) wider use of alternate technologies having reduced impact .

  6. ERSUG Meeting: June 13 - 14, 1995 (Livermore, CA)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ERSUG Meeting: June 13 - 14, 1995 (Livermore, CA) Dates ERSUG Meeting: June 13 & 14, 1995 Location Lawrence Livermore National Laboratory Livermore, CA Minutes Summary of ERSUG ...

  7. Site Visit Report, Livermore Site Office - February 2011 | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Livermore Site Office - February 2011 Site Visit Report, Livermore Site Office - February 2011 February 2011 Livermore Site Office Safety Basis Self-Assessment esults of the Office ...

  8. Independent Activity Report, Lawrence Livermore National Laboratory -

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    February 2013 | Department of Energy February 2013 Independent Activity Report, Lawrence Livermore National Laboratory - February 2013 February 2013 Lawrence Livermore National Laboratory Operational Drill at the B332 Plutonium Facility [HIAR LLNL-2013-02-27] The Livermore Site Office (LSO) and Lawrence Livermore National Security, LLC (LLNS) requested personnel from the U.S. Department of Energy (DOE) Office of Safety and Emergency Management Evaluations (HS-45) to observe an operational

  9. Lawrence Livermore National Laboratory Technology Marketing Summaries -

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Energy Innovation Portal Lawrence Livermore National Laboratory Technology Marketing Summaries Here you'll find marketing summaries for technologies available for licensing from the Lawrence Livermore National Laboratory (LLNL). The summaries provide descriptions of the technologies including their benefits, applications and industries, and development stage. Lawrence Livermore National Laboratory 23 Technology Marketing Summaries Category Title and Abstract Laboratories Date Energy Storage

  10. Lawrence Livermore and Los Alamos

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    Supercomputer: Chip-architecture breakthrough accelerates path to exascale computing; helps computers tackle complex, cognitive tasks such as pattern recognition sensory processing | Department of Energy and IBM Collaborate to Build New Brain-Inspired Supercomputer: Chip-architecture breakthrough accelerates path to exascale computing; helps computers tackle complex, cognitive tasks such as pattern recognition sensory processing Lawrence Livermore and IBM Collaborate to Build New

  11. Lawrence Livermore National Laboratory Awards

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    llnl awards Lawrence Livermore National Laboratory Awards The Laboratory bestows awards to outstanding scientists and engineers from among its workforce and for exceptionally qualified incoming postdoctoral fellows. These include the Edward Teller Fellow; the LLNL S&T Awards; the Science, Technology, Engineering and Operations (STEO) Awards; and the Lawrence Fellowship Awards. Name Year Citation Cross Beam Energy Transfer Team - Debra Callahan, Laurent Divol, Shamasundar Dixit, Denise

  12. livermore

    National Nuclear Security Administration (NNSA)

    on stories about Sandia's telemetry work, recycling algae nutrients and looking how computer users handle phish. A story about the Sandia LED Pulser offers a glimpse of how the...

  13. Santer of Lawrence Livermore National

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    8 6/1/2011 6.28 Human Effects on Global Warming By themselves, droplets of sulfuric acid resulting from the burning of fossil fuels are of little consequence. But vast numbers of them form an aerosol haze that moderates and obscures the "greenhouse effect" caused by heat-trapping gases. In 1995, Benjamin Santer of Lawrence Livermore National Laboratory was the first to quantify and explain the link between fossil fuel emissions and climate change, including the role of greenhouse gases

  14. Lawrence Livermore National Laboratory | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration | (NNSA) Lawrence Livermore National Laboratory Lawrence Livermore National Laboratory DE-AC52-07NA27344 Operated by Lawrence Livermore National Security, LLC BASIC Contract (Official) Modifications (Official) Funding Mods Available Upon Request Conformed Contract (Unofficial) LLNL Sec A (SF33) (pdf, 91KB) See Modifications Section under Conformed Contract Link LLNS Conformed Contract (weblink) LLNL Sec B-H (pdf, 306KB) LLNL Sec I pdf 687KB LLNL Sec J Appx A (pdf, 67KB) LLNL

  15. Lawrence Livermore National Laboratory | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration | (NNSA) Lawrence Livermore National Laboratory Lawrence Livermore National Laboratory (LLNL) is a design laboratory that is responsible for the safety and reliability of the nuclear explosives package in nuclear weapons. It supports surveillance, assessment, and refurbishment of the nuclear weapons stockpile. LLNL also possesses unique high-energy-density physics capabilities and scientific computing assets. The lab is managed by Lawrence Livermore National Security, LLC and

  16. livermore field office | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    livermore field office NNSA engineer teaches young people STEM, makes mark on Livermore lab communities. Rick Roses Job: Federal fire protection engineer and explosives safety engineer Educational background: Bachelor's degree in mechanical engineering, University of California, Berkeley (1984) and a master's in national resource strategy, National Defense University (2010). Rick Roses,... Lab employees, officials, business leaders dedicate Livermore Solar Center Employees and leaders from the

  17. Livermore Compiler Analysis Loop Suite

    Energy Science and Technology Software Center (OSTI)

    2013-03-01

    LCALS is designed to evaluate compiler optimizations and performance of a variety of loop kernels and loop traversal software constructs. Some of the loop kernels are pulled directly from "Livermore Loops Coded in C", developed at LLNL (see item 11 below for details of earlier code versions). The older suites were used to evaluate floating-point performances of hardware platforms prior to porting larger application codes. The LCALS suite is geared toward assissing C++ compiler optimizationsmore » and platform performance related to SIMD vectorization, OpenMP threading, and advanced C++ language features. LCALS contains 20 of 24 loop kernels from the older Livermore Loop suites, plus various others representative of loops found in current production appkication codes at LLNL. The latter loops emphasize more diverse loop constructs and data access patterns than the others, such as multi-dimensional difference stencils. The loops are included in a configurable framework, which allows control of compilation, loop sampling for execution timing, which loops are run and their lengths. It generates timing statistics for analysis and comparing variants of individual loops. Also, it is easy to add loops to the suite as desired.« less

  18. Enterprise Assessments Targeted Review, Lawrence Livermore National...

    Broader source: Energy.gov (indexed) [DOE]

    Targeted Review of the Safety-Class Room Ventilation Systems and Associated Final Filtration Stages, and Review of Federal Assurance Capability at the Lawrence Livermore National...

  19. Enforcement Letter, Lawrence Livermore National Laboratory -...

    Broader source: Energy.gov (indexed) [DOE]

    Basis Issues On November 5, 1999, the U.S. Department of Energy (DOE) issued a nuclear safety Enforcement Letter to Lawrence Livermore National Laboratory related to the...

  20. Preliminary Notice of Violation, Lawrence Livermore National...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    6 Preliminary Notice of Violation, Lawrence Livermore National Laboratory - EA-98-06 July 28, 1998 Issued to the University of California related to Criticality Safety and the...

  1. Independent Oversight Inspection, Lawrence Livermore National...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Safety, and Health Programs at the Lawrence Livermore National Laboratory This report provides the results of an inspection of the environment, safety, and health programs at ...

  2. Preliminary Notice of Violation, Lawrence Livermore National...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of Violation, Lawrence Livermore National Laboratory - EA-98-01 March 9, 1998 Issued to University of California related to the Unplanned Personnel Contaminations and Radioactive...

  3. Livermore's biosciences celebrates 50th anniversary | National...

    National Nuclear Security Administration (NNSA)

    a complete list of their biosciences contributions. See more. About the photo: In the 1970s, the Laboratory established preeminence in cytometric research. Livermore was the first...

  4. Voluntary Protection Program Onsite Review, Livermore Operations...

    Broader source: Energy.gov (indexed) [DOE]

    January 2012 Evaluation to determine whether the Livermore Operations is continuing to perform at a level deserving DOE-VPP Star recognition. The Team conducted its review during...

  5. Lawrence Livermore National Laboratory | National Nuclear Security...

    National Nuclear Security Administration (NNSA)

    Labs in NNSA lead the way in 3D printing - the next industrial revolution The power to ... Lab employees, officials, business leaders dedicate Livermore Solar Center Employees and ...

  6. Lawrence Livermore National Laboratory Federal Facility Agreement...

    Office of Environmental Management (EM)

    Site 300) Agreement Name Lawrence Livermore National Laboratory Federal Facility Agreement Under CERCLA Section 120, June 29, 1992 State California Agreement Type Federal Facility ...

  7. Dr. Yuan Ping Lawrence Livermore National Lab

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    Creating, diagnosing and controlling high-energy- density matter with lasers Dr. Yuan Ping Lawrence Livermore National Lab Tuesday, Oct 22, 2013 - 3:00PM MBG AUDITORIUM ...

  8. A Chandrasekhar mass progenitor for the Type Ia supernova remnant...

    Office of Scientific and Technical Information (OSTI)

    for Astrophysics, Cambridge, MA (United States) Univ. of Pittsburgh, Pittsburgh, PA (United States) Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States) Univ. ...

  9. HUBBLE RESIDUALS OF NEARBY TYPE Ia SUPERNOVAE ARE CORRELATED...

    Office of Scientific and Technical Information (OSTI)

    ... MASS; RED SHIFT; SUPERNOVAE BINARY STARS; ERUPTIVE VARIABLE STARS; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; STARS; VARIABLE STARS Word Cloud More Like This Full Text Journal ...

  10. THE ABSOLUTE MAGNITUDES OF TYPE Ia SUPERNOVAE IN THE ULTRAVIOLET...

    Office of Scientific and Technical Information (OSTI)

    Authors: Brown, Peter J. ; Roming, Peter W. A. ; Ciardullo, Robin ; Gronwall, Caryl ; Hoversten, Erik A. ; Pritchard, Tyler 1 ; Milne, Peter 2 ; Bufano, Filomena ; Mazzali, ...

  11. Sweetspot: Near-infrared observations of 13 type Ia supernovae...

    Office of Scientific and Technical Information (OSTI)

    Rutgers, the State University of New Jersey, 136 Frelinghuysen Road, Piscataway, NJ 08854 (United States) Publication Date: 2014-04-01 OSTI Identifier: 22357282 Resource ...

  12. THE ULTRAVIOLET BRIGHTEST TYPE Ia SUPERNOVA 2011de (Journal Article...

    Office of Scientific and Technical Information (OSTI)

    be modeled with additional flux from the shock of the ejecta hitting a relatively large ... similar UV luminosities can be intrinsic or caused by other forms of shock interaction. ...

  13. Turbulence-Flame Interactions in Type Ia Supernovae (Journal...

    Office of Scientific and Technical Information (OSTI)

    1 ; Department of Astronomy and Astrophysics, University of California at Santa Cruz, Santa Cruz, CA 95064 2 ; Department of Physics and Astronomy, Stony Brook University, ...

  14. Improved Distances to Type Ia Supernovae withMulticolor Light...

    Office of Scientific and Technical Information (OSTI)

    This site is a product of DOE's Office of Scientific and Technical Information (OSTI) and ... We present an updated version of the Multicolor Light Curve Shape method to measure ...

  15. Turbulence-Flame Interactions in Type Ia Supernovae (Journal...

    Office of Scientific and Technical Information (OSTI)

    turbulent intensity and l is the integral scale. For the larger integral scales characteristic of a real supernova, the flame structure is predicted to become complex and unsteady. ...

  16. New approaches for modeling type Ia supernovae (Conference) ...

    Office of Scientific and Technical Information (OSTI)

    DOE Contract Number: DE-AC02-05CH11231 Resource Type: Conference Resource Relation: Conference: SciDAC 2006, Denver, CO, 25-29 June2006 Publisher: Institute of Physics, ...

  17. Type Ia Supernova Hubble Residuals and Host-Galaxy Properties...

    Office of Scientific and Technical Information (OSTI)

    Tao, C.; Thomas, R. C.; Weaver, B. A. 79 ASTRONOMY AND ASTROPHYSICS distance scale, supernovae: general distance scale, supernovae: general Kim et al. (2013) K13 introduced a...

  18. Climate Action Champions: Dubuque, IA | Department of Energy

    Office of Environmental Management (EM)

    meter technologies that allow them to reduce water usage, electricity usage, and garbage. ... focused on risk reduction and resilience, and it has been restoring a major ...

  19. Flames in Type Ia Supernova: Deflagration-Detonation Transition...

    Office of Scientific and Technical Information (OSTI)

    Language: English Word Cloud More Like This Full Text Journal Articles Find in Google Scholar Find in Google Scholar Search WorldCat Search WorldCat to find libraries that may hold ...

  20. Microsoft PowerPoint - IEEE IAS PES 102313.pptx

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... units Cyber security Weather forecasting Equipment health monitors Smart ... savings Reduced electricity costs to consumers Lower pollutant ...

  1. Closest Type Ia Supernova in Decades Solves a Cosmic Mystery

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    observations of SN 2011fe were carried out at the Liverpool Telescope at La Palma in the Canary Islands, followed within hours by the Shane Telescope at Lick Observatory in...

  2. Improved Constraints on Type Ia Supernova Host Galaxy Properties...

    Office of Scientific and Technical Information (OSTI)

    Astrophys. ; Smith, Mathew ; Cape Town U. ; Bassett, Bruce ; South African Astron. Observ. Cape Town U., Dept. Math. African Inst. Math. Sci., Cape Town ; Frieman, Joshua A. ; ...

  3. Type Ia Supernova Hubble Residuals and Host-Galaxy Properties...

    Office of Scientific and Technical Information (OSTI)

    The K13 Hubble residual step with host mass is 0.013 ? 0.031 mag for a supernova subsample with data coverage corresponding to the K13 training; at ? 1?, the step is not ...

  4. Lawrence Livermore National Lab Perforemance Evaluations | National Nuclear

    National Nuclear Security Administration (NNSA)

    Security Administration | (NNSA) Lawrence Livermore National Lab Perforemance Evaluations FY 2016 FY 2016 Performance Evaluation Plan, Lawrence Livermore National Security, LLC FY 2015 FY 2015 Performance Evaluation Report, Lawrence Livermore National Security, LLC FY 2015 Performance Evaluation Report, Fee Determination Letter, Lawrence Livermore National Security, LLC FY 2015 Performance Evaluation Plan, Lawrence Livermore National Security, LLC FY 2014 FY 2014 Performance Evaluation

  5. Welcome to the Livermore Field Office | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration | (NNSA) Home / fieldoffices Welcome to the Livermore Field Office Welcome to the Livermore Field Office The NNSA Livermore Field Office (LFO) is located at the Lawrence Livermore National Laboratory (LLNL) in Livermore, California. Currently, the Lawrence Livermore National Security, LLC is under contract with the Department of Energy for the management and operation of LLNL. The LFO is responsible for administering this contract. Additionally, LFO promotes national nuclear

  6. DOE Selects Lawrence Livermore National Security, LLC to Manage its

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Lawrence Livermore National Laboratory | Department of Energy Lawrence Livermore National Security, LLC to Manage its Lawrence Livermore National Laboratory DOE Selects Lawrence Livermore National Security, LLC to Manage its Lawrence Livermore National Laboratory May 8, 2007 - 12:45pm Addthis WASHINGTON, DC - The U.S. Department of Energy (DOE) today announced that Lawrence Livermore National Security, LLC (LLNS) has been selected to be the management and operating contractor for DOE's

  7. Sandia National Laboratories: Locations: Livermore, California: Life in

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Livermore Livermore Housing Education Recreation Locations Life in Livermore Photo of Livermore countryside The Livermore Valley provides a relaxed lifestyle with good schools and friendly people. With a population of nearly 81,000, the city of Livermore maintains a local personality. Whether you are a sports fan, wine connoisseur, or outdoor enthusiast, you will have plenty to see and do. Pavilion Music The Bay Area is a haven for musicians and artists, with many galleries, concerts, and

  8. DOE Selects Lawrence Livermore National Security, LLC to Manage...

    Energy Savers [EERE]

    Livermore National Laboratory in California. "Livermore National Laboratory is a ... National, Inc., the University of California, BWX Technologies, Inc., and the ...

  9. FY 2010 Lawrence Livermore National Security, LLC, PER Summary...

    National Nuclear Security Administration (NNSA)

    FY 2010 Lawrence Livermore National Security, LLC, PER Summary SUMMARY OF FY 2010 LAWRENCE LIVERMORE NATIONAL SECURITY, LLC, AWARD FEE DETERMINATION Total Available Fee Total Fee ...

  10. FY 2008 Lawrence Livermore National Security, LLC, PER Summary...

    National Nuclear Security Administration (NNSA)

    FY 2008 Lawrence Livermore National Security, LLC, PER Summary SUMMARY OF FY 2008 LAWRENCE LIVERMORE NATIONAL SECURITY, LLC, AWARD FEE DETERMINATION Total Available Fee Total Fee ...

  11. FY 2009 Lawrence Livermore National Security, LLC, PER Summary...

    National Nuclear Security Administration (NNSA)

    FY 2009 Lawrence Livermore National Security, LLC, PER Summary SUMMARY OF FY 2009 LAWRENCE LIVERMORE NATIONAL SECURITY, LLC, AWARD FEE DETERMINATION Total Available Fee Total Fee ...

  12. FY 2011 Lawrence Livermore National Security, LLC, PER Summary...

    National Nuclear Security Administration (NNSA)

    FY 2011 Lawrence Livermore National Security, LLC, PER Summary SUMMARY OF FY 2011 LAWRENCE LIVERMORE NATIONAL SECURITY, LLC, AWARD FEE DETERMINATION Total Available Fee Total Fee ...

  13. Independent Oversight Review of the Lawrence Livermore National...

    Broader source: Energy.gov (indexed) [DOE]

    March 2001 Review of the Lawrence Livermore National Laboratory Health Services Department ... Division at the Department of Energy's (DOE) Lawrence Livermore National Laboratory. ...

  14. 2013 Annual Workforce Analysis and Staffing Plan Report - Livermore...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Analysis and Staffing Plan Report - Livermore Field Office 2013 Annual Workforce Analysis and Staffing Plan Report - Livermore Field Office Managers perform an annual ...

  15. 2014 Annual Workforce Analysis and Staffing Plan Report - Livermore...

    Office of Environmental Management (EM)

    Livermore Field Office 2014 Annual Workforce Analysis and Staffing Plan Report - Livermore Field Office Managers perform an annual workforce analysis of their organization and ...

  16. Overview of the Tritium research activities at Lawrence Livermore...

    Office of Environmental Management (EM)

    Tritium research activities at Lawrence Livermore National Laboratory (LLNL) Overview of the Tritium research activities at Lawrence Livermore National Laboratory (LLNL) Presentation ...

  17. 2012 Annual Workforce Analysis and Staffing Plan Report - Livermore...

    Broader source: Energy.gov (indexed) [DOE]

    More Documents & Publications 2013 Annual Workforce Analysis and Staffing Plan Report - Livermore Field Office 2014 Annual Workforce Analysis and Staffing Plan Report - Livermore ...

  18. Lawrence Livermore Site Office Manager Joins EM's Senior Leadership...

    Office of Environmental Management (EM)

    Livermore Site Office Manager Joins EM's Senior Leadership Team Lawrence Livermore Site Office Manager Joins EM's Senior Leadership Team November 9, 2011 - 12:00pm Addthis ...

  19. Williams To Head Livermore Site Office | National Nuclear Security...

    National Nuclear Security Administration (NNSA)

    Williams To Head Livermore Site Office August 14, 2008 WASHINGTON, D.C. - Alice C. ... and environment, has been named the new Livermore Site Office manager, effective November ...

  20. 2015 Annual Workforce Analysis and Staffing Plan Report - Livermore...

    Office of Environmental Management (EM)

    Livermore Field Office 2015 Annual Workforce Analysis and Staffing Plan Report - Livermore Field Office Managers perform an annual workforce analysis of their organization and ...

  1. Technical Sessions J. E. Penner Lawrence Livermore National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Penner Lawrence Livermore National Laboratory Livermore, California 94550 The stated goal of the Atmospheric Radiation Measure- ment (ARM) program is to improve the treatment of ...

  2. Fixed Monthly Living Expense Payments at the Lawrence Livermore...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    the Lawrence Livermore National Laboratory INS-L-11-05 September 2011 Department of Energy Washington, DC 20585 September 21, 2011 MEMORANDUM FOR MANAGER, LIVERMORE SITE OFFICE ...

  3. Lessons Learned by Lawrence Livermore National Laboratory Activity...

    Broader source: Energy.gov (indexed) [DOE]

    May 16, 2013 Presenter: Donna J. Governor, Lawrence Livermore National Laboratory Topics ... Lessons Learned by Lawrence Livermore National Laboratory Activity-level Work Planning & ...

  4. Supercomputing with Livermore National Lab | GE Global Research

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Working With Livermore National Lab on Supercomputing Click to email this to a friend ... Working With Livermore National Lab on Supercomputing GE Global Research has been selected ...

  5. Human Resources at Lawrence Livermore National Laboratory | Critical...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Lawrence Livermore National Laboratory Careers at Lawrence Livermore National Laboratory Main contacts in Human Resources for recruitment and hiring: Jennifer Brizel Recruitment & ...

  6. Preliminary Notice of Violation, Lawrence Livermore National...

    Broader source: Energy.gov (indexed) [DOE]

    worker safety and health program (10 C.F.R. Part 851) associated with the sulfuric acid burn event that occurred at Lawrence Livermore National Laboratory. Preliminary Notice of...

  7. Livermore, California: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    This article is a stub. You can help OpenEI by expanding it. Livermore is a city in Alameda County, California. It falls under California's 10th congressional district.12...

  8. Science on Saturday @ Lawrence Livermore Lab

    Office of Energy Efficiency and Renewable Energy (EERE)

    Science on Saturday. Science on Saturday (SOS) is a series of science lectures for middle and high school students. Each topic highlights cutting-edge science occurring at the Lawrence Livermore...

  9. Sandia National Laboratories: Locations: Livermore, California: Visiting

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Sandia/California: Maps and Directions Locations Maps and Directions to Sandia/California Sandia/California is located at 7011 East Avenue in Livermore, Calif., a suburban community about 45 miles east of San Francisco. Lawrence Livermore National Laboratory (LLNL) is directly across the street from Sandia on the north side of East Avenue. Access to Sandia's California site is limited to those with authorized badges. If you do not have an authorized badge, be sure to make arrangements with

  10. Physicist, Lawrence Livermore National Laboratory | National Nuclear

    National Nuclear Security Administration (NNSA)

    Security Administration | (NNSA) Physicist, Lawrence Livermore National Laboratory Kennedy Reed Kennedy Reed July 2009 Presidential Award for Excellence in Science and Engineering Mentoring President Obama has named Lawrence Livermore National Laboratory physicist Kennedy Reed as a recipient of the prestigious Presidential Award for Excellence in Science and Engineering Mentoring. Reed is a theoretical physicist at the laboratory, conducting research on atomic collisions in high temperature

  11. Researcher, Lawrence Livermore National Laboratory | National Nuclear

    National Nuclear Security Administration (NNSA)

    Security Administration | (NNSA) Researcher, Lawrence Livermore National Laboratory Placeholder for Bruce Macintosh image Bruce Macintosh February 2010 AAAS Newcomb Cleveland Prize A Lawrence Livermore National Laboratory researcher's paper published in November 2008 is co-winner of this year's American Association for the Advancement of Science (AAAS) Newcomb Cleveland Prize. The Paper is one of two outstanding papers published in Science from June 1, 2008 through May 31, 2009. Bruce

  12. Researcher, Lawrence Livermore National Laboratory | National Nuclear

    National Nuclear Security Administration (NNSA)

    Security Administration | (NNSA) Researcher, Lawrence Livermore National Laboratory Placeholder for Mike Fitzgerald image Mike Fitzgerald February 2010 AAAS Newcomb Cleveland Prize A Lawrence Livermore National Laboratory researcher's paper published in November 2008 is co-winner of this year's American Association for the Advancement of Science (AAAS) Newcomb Cleveland Prize. The Paper is one of two outstanding papers published in Science from June 1, 2008 through May 31, 2009. Another

  13. Sandia National Laboratories: Locations: Livermore, California

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Livermore, California Livermore, California administration building For more than 50 years, the California campus of Sandia National Laboratories has delivered essential science and technology to resolve the nation's most challenging security issues. Many of these challenges - like energy resources, transportation, immigration, ports, and more - surfaced early in the state of California, providing Sandia/California with a special opportunity to participate in the first wave of solutions to

  14. Sandia National Laboratories: Locations: Livermore, California: Visiting

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Sandia/California California Livermore, California administration building Our location and hours of operation Sandia/California is located at 7011 East Avenue in Livermore, Calif., a suburban community about 45 miles east of San Francisco. Positioned at the eastern edge of the San Francisco Bay Area, Sandia is within easy commuting distance of many affordable housing communities in San Joaquin County and the Central Valley. The official hours of operation at Sandia/California are from 7:30

  15. Independent Oversight Review, Lawrence Livermore National Laboratory- August 2014

    Broader source: Energy.gov [DOE]

    Review of the Lawrence Livermore National Laboratory Radiological Controls Activity-Level Implementation.

  16. Independent Oversight Review, Lawrence Livermore National Laboratory- September 2011

    Office of Energy Efficiency and Renewable Energy (EERE)

    Review of Integrated Safety Management System Effectiveness at Lawrence Livermore National Laboratory

  17. Site Visit Report, Lawrence Livermore National Laboratory- March 2010

    Office of Energy Efficiency and Renewable Energy (EERE)

    Review of the Lawrence Livermore National Laboratory Identified Defective Department of Transportation Hazardous Material Packages

  18. Independent Oversight Inspection, Lawrence Livermore National Laboratory- May 2007

    Office of Energy Efficiency and Renewable Energy (EERE)

    Inspection of Environment, Safety, and Health Programs at the Lawrence Livermore National Laboratory

  19. EIS-0157: Site-wide for Continued Operation of Lawrence Livermore/Sandia National Laboratory, Livermore

    Broader source: Energy.gov [DOE]

    The Department of Energy prepared this environmental impact statement to analyze the potential environmental impacts of the continued operation of Lawrence Livermore National Laboratory and Sandia National Laboratory - Livermore, including programmatic enhancements and facility modifications to occur over the subsequent 10-year term that are pursuant to research and development missions established for the Laboratories by Congress and the President.

  20. Lawrence Livermore National Laboratory Environmental Report 2014

    SciTech Connect (OSTI)

    Jones, H. E.; Bertoldo, N. A.; Blake, R. G.; Buscheck, W. M.; Byrne, J. G.; Cerruti, S. J.; Bish, C. B.; Fratanduono, M. E.; Grayson, A. R.; MacQueen, D. H.; Montemayor, W. E.; Ottaway, H. L.; Paterson, L. E.; Revelli, M. A.; Rosene, C. A.; Swanson, K. A.; Terrill, A. A.; Wegrecki, A. M.; Wilson, K. R.; Woollett, J. S.

    2015-09-29

    The purposes of the Lawrence Livermore National Laboratory Environmental Report 2014 are to record Lawrence Livermore National Laboratory’s (LLNL’s) compliance with environmental standards and requirements, describe LLNL’s environmental protection and remediation programs, and present the results of environmental monitoring at the two LLNL sites—the Livermore Site and Site 300. The report is prepared for the U.S. Department of Energy (DOE) by LLNL’s Environmental Functional Area. Submittal of the report satisfies requirements under DOE Order 231.1B, “Environment, Safety and Health Reporting,” and DOE Order 458.1, “Radiation Protection of the Public and Environment.”

  1. FY 2012 Lawrence Livermore National Security, LLC, PER Summary | National

    National Nuclear Security Administration (NNSA)

    Nuclear Security Administration | (NNSA) Lawrence Livermore National Security, LLC, PER Summary SUMMARY OF FY 2012 LAWRENCE LIVERMORE NATIONAL SECURITY, LLC, AWARD FEE DETERMINATION Total Available Fee Total Fee Earned % $50,506,024 $44,555,181 88% Lawrence Livermore National Security, LLC, the management and operating contractor for the Lawrence Livermore National Laboratory, earned a Very Good rating in Programs and Operations, a Good rating in Institutional Management and Business, and 88

  2. Preliminary Notice of Violation, Lawrence Livermore National Security, LLC

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    - September 25, 2014 | Department of Energy Lawrence Livermore National Security, LLC - September 25, 2014 Preliminary Notice of Violation, Lawrence Livermore National Security, LLC - September 25, 2014 September 25, 2014 Worker Safety and Health Enforcement Preliminary Notice of Violation issued to Lawrence Livermore National Security, LLC On September 25, 2014, the National Nuclear Security Administration issued a Preliminary Notice of Violation (WEA-2014-03) to Lawrence Livermore National

  3. 2011 Annual Planning Summary for Livermore Site Office (LSO)

    Broader source: Energy.gov [DOE]

    The ongoing and projected Environmental Assessments and Environmental Impact Statements for 2011 and 2012 within the Livermore Site Office (LSO).

  4. Site Visit Report, Lawrence Livermore National Laboratory - February 2011 |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Lawrence Livermore National Laboratory - February 2011 Site Visit Report, Lawrence Livermore National Laboratory - February 2011 February 2011 Lawrence Livermore National Laboratory Safety Basis Assessment TThis report documents the collective results of a review of the Lawrence Livermore National Laboratory's safety basis processes. The review was conducted jointly by Office of Health, Safety and Security's (HSS) Office of Safety and Emergency Management Evaluations and

  5. PROJECT PROFILE: Lawrence Livermore National Laboratory (PREDICTS 2) |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Lawrence Livermore National Laboratory (PREDICTS 2) PROJECT PROFILE: Lawrence Livermore National Laboratory (PREDICTS 2) Funding Opportunity: PREDICTS 2 LLNL Logo.png SunShot Subprogram: PV Location: Livermore, CA Amount Awarded: $570,000 Awardee Cost Share: $375,000 Principal Investigator: Mihail Bora As a part of their PREDICTS 2 award, researchers at Lawrence Livermore National Laboratory (LLNL) will explore the use of spectral imaging as a non-destructive means of

  6. 2013 Annual Planning Summary for the Lawrence Livermore National Laboratory

    Broader source: Energy.gov [DOE]

    The ongoing and projected Environmental Assessments and Environmental Impact Statements for 2013 and 2014 within the Lawrence Livermore National Laboratory.

  7. Independent Oversight Review, Lawrence Livermore National Laboratory - July

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    2013 | Department of Energy Lawrence Livermore National Laboratory - July 2013 Independent Oversight Review, Lawrence Livermore National Laboratory - July 2013 July 2013 Review of Preparedness for Severe Natural Phenomena Events at the Lawrence Livermore National Laboratory The Office of Enforcement and Oversight (Independent Oversight), within the Office of Health, Safety and Security (HSS), conducted an independent review of the National Nuclear Security Administration (NNSA) Livermore

  8. Independent Oversight Review, Livermore Site Office - October 2011 |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Livermore Site Office - October 2011 Independent Oversight Review, Livermore Site Office - October 2011 October 2011 Review of Integrated Safety Management System Effectiveness at the Livermore Site Office This report provides the results of an independent oversight review of the effectiveness of the integrated safety management system at the Department of Energy's (DOE) Livermore Site Office. The review was conducted July 11-21, 2011, by the Office of Safety and

  9. Lawrence Livermore National Security Enforcement Letter (NEL-2013-03)

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Penrose C. Albright Department of Energy Washington, DC 20585 July 22, 2013 President and Laboratory Director Lawrence Livermore National Security, LLC Lawrence Livermore National Laboratory 7000 East Avenue Livermore, California 94550 NEL-2013-03 Dear Dr. Albright: The Office of Health, Safety and Security's Office of Enforcement and Oversight has evaluated the facts and circumstances surrounding programmatic deficiencies identified in the Lawrence Livermore National Security, LLC (LLNS)

  10. Independent Oversight Review of the Lawrence Livermore National Laboratory

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    - March 2001 | Department of Energy Review of the Lawrence Livermore National Laboratory - March 2001 Independent Oversight Review of the Lawrence Livermore National Laboratory - March 2001 March 2001 Review of the Lawrence Livermore National Laboratory Health Services Department This report provides the results of an independent oversight review of the Health Services Division at the Department of Energy's (DOE) Lawrence Livermore National Laboratory. The review was performed March 19-21,

  11. Enforcement Letter, Lawrence Livermore National Laboratory- August 22, 1996

    Office of Energy Efficiency and Renewable Energy (EERE)

    Issued to the University of California related to Radiological Worker Training Deficiencies at the Lawrence Livermore National Laboratory

  12. Voluntary Protection Program Onsite Review, Livermore Operations- January 2012

    Office of Energy Efficiency and Renewable Energy (EERE)

    Evaluation to determine whether the Livermore Operations is continuing to perform at a level deserving DOE-VPP Star recognition.

  13. Enforcement Letter, Lawrence Livermore National Laboratory- June 2, 2005

    Office of Energy Efficiency and Renewable Energy (EERE)

    Issued to Lawrence Livermore National Laboratory for Quality Assurance Deficiencies related to Weapon Activities, June 2, 2005

  14. Consent Order, Lawrence Livermore National National Security, LLC -

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    WCO-2010-01 | Department of Energy Lawrence Livermore National National Security, LLC - WCO-2010-01 Consent Order, Lawrence Livermore National National Security, LLC - WCO-2010-01 October 29, 2010 Issued to Lawrence Livermore National Security, LLC for deficiencies associated with the Lawrence Livermore National Laboratory Chronic Beryllium Disease Prevention Program On October 29, 2010, the U.S. Department of Energy (DOE) and the National Nuclear Security Administration (NNSA) issued a

  15. The Livermore Phantom History and Supplementation

    SciTech Connect (OSTI)

    Snyder, Sandra F.; Traub, Richard J.

    2010-03-01

    In vivo monitoring facilities determine the absence or presence of internally entrained radionuclides. To be of greatest utility, the detection systems must detect and quantify the nuclides of interest at levels of interest. Phantoms have been developed to improve measurements at in vivo monitoring facilities. Since the 1970s, the Lawrence Livermore National Laboratory (LLNL, or simply "Livermore") phantom continues to be a well-used tool at lung monitoring facilities, especially for the detection of low-energy emissions from transuranics. The history of its development from need, through design development and current availability, is summarized. The authors have taken the LLNL phantom one step further by scanning the phantom surface and announce the availability of the scan files on the internet.

  16. Physicist, Lawrence Livermore National Laboratory | National Nuclear

    National Nuclear Security Administration (NNSA)

    Security Administration | (NNSA) Physicist, Lawrence Livermore National Laboratory Omar Hurricane Omar Hurricane Ernest Orlando Lawrence Award Omar Hurricane has been named as a recipient of the Department of Energy's prestigious Ernest Orlando Lawrence Award. He is honored for his scientific leadership to advance understanding in a long-standing nuclear weapons physics anomaly and his contribution to nuclear weapons stockpile stewardship. He will be honored at a ceremony in Washington, D.C.

  17. Lawrence Livermore National Laboratories | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration Livermore National Laboratories NNSA, Air Force Complete Successful B61-12 Life Extension Program Instrumented Flight Tests WASHINGTON, D.C. - The National Nuclear Security Administration (NNSA) and United States Air Force completed eight successful B61-12 Life Extension Program (LEP) Vibration Fly Around/ Instrumented Measurement Vehicle (VFA/IMV) tests at Eglin Air Force Base and Edwards Air Force Base during July to

  18. EIS-0133: Decontamination and Waste Treatment Facility for the Lawrence Livermore National Laboratory, Livermore, California

    Office of Energy Efficiency and Renewable Energy (EERE)

    The U.S. Department of Energy’s San Francisco Operations Office developed this draft environmental impact statement to analyze the potential environmental and socioeconomic impacts of alternatives for constructing and operating a Decontamination and Waste Treatment Facility for nonradioactive (hazardous and nonhazardous) mixed and radioactive wastes at Lawrence Livermore National Laboratory.

  19. Lab employees, officials, business leaders dedicate Livermore Solar Center

    National Nuclear Security Administration (NNSA)

    | National Nuclear Security Administration | (NNSA) employees, officials, business leaders dedicate Livermore Solar Center Tuesday, June 7, 2016 - 11:29am Employees and leaders from the government and private industry - and several invited guests - came together last month to dedicate the Lawrence Livermore Solar Center. The solar array occupies 10 acres in the northwest corner of Lawrence Livermore National Laboratory's (LLNL) property. Announced in 2015, it contains 12,720 solar panels

  20. Lessons Learned by Lawrence Livermore National Laboratory Activity-level

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Work Planning & Control | Department of Energy Lessons Learned by Lawrence Livermore National Laboratory Activity-level Work Planning & Control Lessons Learned by Lawrence Livermore National Laboratory Activity-level Work Planning & Control May 16, 2013 Presenter: Donna J. Governor, Lawrence Livermore National Laboratory Topics Covered: Work Control Review Board (WCRB) Functional Area Manager identified at the Institution level reporting directly to the Deputy Laboratory Director

  1. Fact Sheet: Collaboration of Oak Ridge, Argonne, and Livermore (CORAL) |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Fact Sheet: Collaboration of Oak Ridge, Argonne, and Livermore (CORAL) Fact Sheet: Collaboration of Oak Ridge, Argonne, and Livermore (CORAL) The Collaboration of Oak Ridge, Argonne, and Livermore (CORAL) is a joint procurement activity among three of the Department of Energy's National Laboratories launched in 2014 to build state-of-the-art high-performance computing technologies that are essential for supporting U.S. national nuclear security and are key tools used for

  2. Analysis Activities at Lawrence Livermore National Laboratory | Department

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of Energy Lawrence Livermore National Laboratory Analysis Activities at Lawrence Livermore National Laboratory Presentation on Lawrence Livermore's analysis activities to the DOE Systems Analysis Workshop held in Washington, D.C. July 28-29, 2004. 11_llnl_stewart.pdf (717.16 KB) More Documents & Publications Hour-by-Hour Cost Modeling of Optimized Central Wind-Based Water Electrolysis Production CX-100522 Categorical Exclusion Determination Analysis Activities at Argonne

  3. Lesson Learned by Lawrence Livermore National Laboratory Activity-level

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Work Planning and Control | Department of Energy Lawrence Livermore National Laboratory Activity-level Work Planning and Control Lesson Learned by Lawrence Livermore National Laboratory Activity-level Work Planning and Control May 16, 2013 Presenter: Donna J. Governor Deputy Dept Mgr for Planning & Integration Lawrence Livermore National Laboratory Topics Covered: LLNL WP&C was implemented lab-wide for all Activity Level Work Within 16 months Depth and breadth of LLNL work varies

  4. Independent Activity Report, Lawrence Livermore National Laboratory - March

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    2011 | Department of Energy March 2011 Independent Activity Report, Lawrence Livermore National Laboratory - March 2011 March 2011 Lawrence Livermore National Laboratory Chronic Beryllium Disease Prevention Program Effectiveness Review [HIAR-LLNL-2011-03-25] This Independent Activity Report documents an oversight activity conducted by Office of Health, Safety and Security's (HSS) Office of Safety and Emergency Management Evaluations March 14-25, 2011, at the Lawrence Livermore National

  5. Cleantech Open meets with Lawrence Livermore, Sandia national laboratories

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    | National Nuclear Security Administration | (NNSA) Cleantech Open meets with Lawrence Livermore, Sandia national laboratories Wednesday, March 26, 2014 - 10:00am The Cleantech Open, the world's largest accelerator for clean technology start ups, hosted a regional networking event last week to discuss the challenges and opportunities for investors and entrepreneurs to do business with Lawrence Livermore and Sandia national laboratories. Cleantech Open meets with Lawrence Livermore, Sandia

  6. Audit of Lawrence Livermore National Laboratory orders for memorabilia

    SciTech Connect (OSTI)

    Not Available

    1988-12-23

    We reviewed selected aspects of orders placed by Lawrence Livermore National Laboratory, a Department of Energy contractor, during 1979--1985 for memorabilia, models, and illustrations and the oversight of those orders by the San Francisco Operations Office (SAN). This review extends earlier audit work at a second Department contractor, Rockwell International, Rocky Flats Plant, Engineering Prototype Group, on which we issued a report dated July 12, 1988. That audit focused on the Prototype Group's providing Livermore with illustrations, models, engineering prototypes, and other articles (mementos, plaques, etc.) during October 1977 through September 1985. Issues arose during that audit which required a separate review at SAN and Livermore, to determine specifically: the propriety of, and SAN oversight of, procurement practices followed by Livermore; the basis for the Livermore orders; the adequacy of reimbursement to the Department for silver used in medallions; and the cost ceilings for memorabilia contained in the Department's contract with the University of California, which operates Livermore for the Department. Limiting the audit scope to the orders Livermore placed with Rockwell's Prototype Group, we reviewed Department and Livermore procedures for acquiring memorabilia. In addition to interviewing SAN and Livermore Legal Counsel, Special Material Office personnel, and Research and Development Program representatives, we examined SMO requisitions, accounts payable listings and related payments, and selected research and development correspondences.

  7. Livermore researchers create new technology for first responders...

    National Nuclear Security Administration (NNSA)

    for first responders Livermore researchers create new technology for first responders Training of first responders on the hazards of radiological and nuclear threats has been...

  8. First-of-a-kind supercomputer at Lawrence Livermore available...

    National Nuclear Security Administration (NNSA)

    Catalyst, a first-of-a-kind supercomputer at Lawrence Livermore National Laboratory, is available to industry collaborators to test big data technologies, architectures and ...

  9. Livermore Field Office sets core values as part of continuous...

    National Nuclear Security Administration (NNSA)

    At their recent off-site continuous improvement session, the NNSA Livermore Field Office (LFO) in California unveiled their new set of core values: Integrity - Trustworthy, ...

  10. Livermore, New Hampshire: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Livermore, New Hampshire: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 44.0745127, -71.3772971 Show Map Loading map... "minzoom":false,"mapp...

  11. Livermore's Crawford selected for California Council on Science...

    National Nuclear Security Administration (NNSA)

    Livermore's Crawford selected for California Council on Science and Technology Wednesday, ... has been selected as a member of the California Council on Science and Technology (CCST). ...

  12. Preliminary Notice of Violation issued to Lawrence Livermore National Security

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    September 25, 20 14 CERTIFI ED MAIL RETURN RECEIPT REQUESTED Dr. William H. Goldstein Laboratory Director Lawrence Livermore National Security, LLC Lawrence Livermore National Laboratory 7000 East A venue Livermore, California 94550 WEA-2014-03 Dear Dr. Goldstein: ///A I. '!f ~ ~l 11/ IVA.~~~ N*tlon*I NucWr S.cutlty Administration This letter refers to the Depa11ment of Energy's (DOE) investigation into the facts and circumstances related to the sulfuri c acid burn event at Lawrence Livermore

  13. Lawrence Livermore National Laboratory 2007 Annual Report

    SciTech Connect (OSTI)

    Chrzanowski, P; Walter, K

    2008-04-25

    Lawrence Livermore National Laboratory's many outstanding accomplishments in 2007 are a tribute to a dedicated staff, which is shaping the Laboratory's future as we go through a period of transition and transformation. The achievements highlighted in this annual report illustrate our focus on the important problems that affect our nation's security and global stability, our application of breakthrough science and technology to tackle those problems, and our commitment to safe, secure, and efficient operations. In May 2007, the Department of Energy (DOE) awarded Lawrence Livermore National Security, LLC (LLNS), a new public-private partnership, the contract to manage and operate the Laboratory starting in October. Since its inception in 1952, the Laboratory had been managed by the University of California (UC) for the DOE's National Nuclear Security Administration (NNSA) and predecessor organizations. UC is one of the parent organizations that make up LLNS, and UC's presence in the new management entity will help us carry forward our strong tradition of multidisciplinary science and technology. 'Team science' applied to big problems was pioneered by the Laboratory's co-founder and namesake, Ernest O. Lawrence, and has been our hallmark ever since. Transition began fully a year before DOE's announcement. More than 1,600 activities had to be carried out to transition the Laboratory from management by a not-for-profit to a private entity. People, property, and procedures as well as contracts, formal agreements, and liabilities had to be transferred to LLNS. The pre-transition and transition teams did a superb job, and I thank them for their hard work. Transformation is an ongoing process at Livermore. We continually reinvent ourselves as we seek breakthroughs that impact emerging national needs. An example is our development in the late 1990s of a portable instrument that could rapidly detect DNA signatures, research that started with a view toward the potential threat

  14. Lawrence Livermore National Laboratory Annual Report 2006

    SciTech Connect (OSTI)

    Chrzanowski, P; Walter, K

    2007-05-24

    For the Laboratory and staff, 2006 was a year of outstanding achievements. As our many accomplishments in this annual report illustrate, the Laboratory's focus on important problems that affect our nation's security and our researchers breakthroughs in science and technology have led to major successes. As a national laboratory that is part of the Department of Energy's National Nuclear Security Administration (DOE/NNSA), Livermore is a key contributor to the Stockpile Stewardship Program for maintaining the safety, security, and reliability of the nation's nuclear weapons stockpile. The program has been highly successful, and our annual report features some of the Laboratory's significant stockpile stewardship accomplishments in 2006. A notable example is a long-term study with Los Alamos National Laboratory, which found that weapon pit performance will not sharply degrade from the aging effects on plutonium. The conclusion was based on a wide range of nonnuclear experiments, detailed simulations, theoretical advances, and thorough analyses of the results of past nuclear tests. The study was a superb scientific effort. The continuing success of stockpile stewardship enabled NNSA in 2006 to lay out Complex 2030, a vision for a transformed nuclear weapons complex that is more responsive, cost efficient, and highly secure. One of the ways our Laboratory will help lead this transformation is through the design and development of reliable replacement warheads (RRWs). Compared to current designs, these warheads would have enhanced performance margins and security features and would be less costly to manufacture and maintain in a smaller, modernized production complex. In early 2007, NNSA selected Lawrence Livermore and Sandia National Laboratories-California to develop ''RRW-1'' for the U.S. Navy. Design efforts for the RRW, the plutonium aging work, and many other stockpile stewardship accomplishments rely on computer simulations performed on NNSA's Advanced Simulation

  15. Lawrence Livermore National Laboratory Environmental Report 2010

    SciTech Connect (OSTI)

    Jones, H E; Bertoldo, N A; Campbell, C G; Cerruti, S J; Coty, J D; Dibley, V R; Doman, J L; Grayson, A R; MacQueen, D H; Wegrecki, A M; Armstrong, D H; Brigdon, S L; Heidecker, K R; Hollister, R K; Khan, H N; Lee, G S; Nelson, J C; Paterson, L E; Salvo, V J; Schwartz, W W; Terusaki, S H; Wilson, K R; Woods, J M; Yimbo, P O; Gallegos, G M; Terrill, A A; Revelli, M A; Rosene, C A; Blake, R G; Woollett, J S; Kumamoto, G

    2011-09-14

    The purposes of the Lawrence Livermore National Laboratory Environmental Report 2010 are to record Lawrence Livermore National Laboratory's (LLNL's) compliance with environmental standards and requirements, describe LLNL's environmental protection and remediation programs, and present the results of environmental monitoring at the two LLNL sites - the Livermore site and Site 300. The report is prepared for the U.S. Department of Energy (DOE) by LLNL's Environmental Protection Department. Submittal of the report satisfies requirements under DOE Order 231.1A, Environmental Safety and Health Reporting, and DOE Order 5400.5, Radiation Protection of the Public and Environment. The report is distributed electronically and is available at https://saer.llnl.gov/, the website for the LLNL annual environmental report. Previous LLNL annual environmental reports beginning in 1994 are also on the website. Some references in the electronic report text are underlined, which indicates that they are clickable links. Clicking on one of these links will open the related document, data workbook, or website that it refers to. The report begins with an executive summary, which provides the purpose of the report and an overview of LLNL's compliance and monitoring results. The first three chapters provide background information: Chapter 1 is an overview of the location, meteorology, and hydrogeology of the two LLNL sites; Chapter 2 is a summary of LLNL's compliance with environmental regulations; and Chapter 3 is a description of LLNL's environmental programs with an emphasis on the Environmental Management System including pollution prevention. The majority of the report covers LLNL's environmental monitoring programs and monitoring data for 2010: effluent and ambient air (Chapter 4); waters, including wastewater, storm water runoff, surface water, rain, and groundwater (Chapter 5); and terrestrial, including soil, sediment, vegetation, foodstuff, ambient radiation, and special status

  16. Lesson Learned by Lawrence Livermore National Laboratory Activity-level Work Planning and Control

    Office of Energy Efficiency and Renewable Energy (EERE)

    Slide Presentation by Donna J. Governor, Lawrence Livermore National Laboratory. Lessons Learned by Lawrence Livermore National Laboratory Activity-Level Work Planning & Control.

  17. by Lawrence Livermore National Laboratory under Contract DE-AC52...

    Broader source: Energy.gov (indexed) [DOE]

    U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract ... LLNL-PRES-670964 Lawrence Livermore National Laboratory LLNL-PRES-670964 From a ...

  18. Sandia National Laboratories: Livermore Valley Open Campus (LVOC...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    in eastern Livermore, California, the LVOC is situated on a parcel of land that spans the border between the two historically closed, self-contained labs. New and emerging programs...

  19. TIMELINE: 60 Years of Computing at Lawrence Livermore National...

    Energy Savers [EERE]

    Lawrence Livermore machines have topped lists of the world's fastest, greenest, and most big-data capable systems, but if you ask the Laboratory's researchers, they'll voice...

  20. Secretary of Energy Advisory Board Lawrence Livermore Laboratory

    Broader source: Energy.gov (indexed) [DOE]

    Lawrence Livermore Laboratory October 12, 2011 Agenda Open Plenary Meeting Session 9:30 AM-9:45 AM Welcome and Overview Secretary Steven Chu and Dr. William Perry 9:45 AM-10:00 AM ...

  1. Director of the National Ignition Facility, Lawrence Livermore National

    National Nuclear Security Administration (NNSA)

    Laboratory | National Nuclear Security Administration | (NNSA) Director of the National Ignition Facility, Lawrence Livermore National Laboratory Edward Moses Edward Moses September 2009 Edward Teller Medal Edward Moses of the Lawrence Livermore National Laboratory is a recipient of the 2009 Edward Teller Medal. Moses was cited for his "leadership in the development and completion of the National Ignition Facility" (NIF). As principal associate director for NIF and Photon Science

  2. Livermore Field Office Public Affairs | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration | (NNSA) Livermore Field Office Public Affairs The LFO Office of Public Affairs is the primary point of contact between the NNSA Livermore Field Office and the news media, community organizations and the public. The following services are provided: Media Relations Congressional & Intergovernmental Relations Community Relations Protocol Activities Public Participation Opportunities Internal Communications Media Inquiries: (925) 422-2028 Public Inquiries: (925) 422-2008

  3. Retired lab physicist and computational pioneer, Lawrence Livermore

    National Nuclear Security Administration (NNSA)

    National Laboratory | National Nuclear Security Administration | (NNSA) Retired lab physicist and computational pioneer, Lawrence Livermore National Laboratory Berni Alder, 2009 National Medal of Science Winner Berni Alder September 2009 National Medal of Science Winner President Obama has named Berni Alder, Lawrence Livermore National Laboratory retired physicist, as a recipient of the National Medal of Science, the highest honor bestowed by the United States government on scientists,

  4. Seismology Group Leader, Lawrence Livermore National Laboratory | National

    National Nuclear Security Administration (NNSA)

    Nuclear Security Administration | (NNSA) Seismology Group Leader, Lawrence Livermore National Laboratory Artie Rogers demonstrating seismology modeling. Artie Rogers August 2009 Fulbright Scholarship Artie Rodgers, Seismology Group Leader at Lawrence Livermore National Laboratory, was recently awarded a Fulbright Scholarship. In January he will be heading to Grenoble, France to study the relationship between topography and seismology with computer modeling at Laboratoire de Géohysique

  5. 2013 Annual Workforce Analysis and Staffing Plan Report - Livermore Field

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Office | Department of Energy 3 Annual Workforce Analysis and Staffing Plan Report - Livermore Field Office 2013 Annual Workforce Analysis and Staffing Plan Report - Livermore Field Office Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities. This workforce analysis process continues to cover technical capability needs to address

  6. 2012 Annual Workforce Analysis and Staffing Plan Report - Livermore Field

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Office | Department of Energy Annual Workforce Analysis and Staffing Plan Report - Livermore Field Office 2012 Annual Workforce Analysis and Staffing Plan Report - Livermore Field Office Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities. This workforce analysis process continues to cover technical capability needs to address defense

  7. 2014 Annual Workforce Analysis and Staffing Plan Report - Livermore Field

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Office | Department of Energy Livermore Field Office 2014 Annual Workforce Analysis and Staffing Plan Report - Livermore Field Office Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities. This workforce analysis process continues to cover technical capability needs to address defense nuclear facility and related operational hazards.

  8. 2015 Annual Workforce Analysis and Staffing Plan Report - Livermore Field

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Office | Department of Energy Livermore Field Office 2015 Annual Workforce Analysis and Staffing Plan Report - Livermore Field Office Managers perform an annual workforce analysis of their organization and develop staffing plans that identify technical capabilities and positions they need to ensure safe operation of defense nuclear facilities. This workforce analysis process continues to cover technical capability needs to address defense nuclear facility and related operational hazards.

  9. Lawrence Livermore researchers awarded early career funding | National

    National Nuclear Security Administration (NNSA)

    Nuclear Security Administration | (NNSA) Lawrence Livermore researchers awarded early career funding Friday, May 16, 2014 - 3:44pm Lawrence Livermore National Laboratory scientists Jennifer Pett-Ridge and Todd Gamblin have been selected by DOE's Office of Science Early Career Research program to receive funding for proposed projects. Jennifer Pett-Ridge was selected for her work titled "Microbial Carbon Tranformations in Wet Tropical Soils: The Importance of Redox Fluctuations. Todd

  10. Lawrence Livermore National Laboratory's Laboratory Directed Research and Development Program

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Laboratory Directed Research and Development Program OAS-L-15-04 November 2014 U.S. Department of Energy Office of Inspector General Office of Audits and Inspections Department of Energy Washington, DC 20585 November 24, 2014 MEMORANDUM FOR THE MANAGER, LIVERMORE FIELD OFFICE FROM: David Sedillo, Director Western Audits Division Office of Inspector General SUBJECT: INFORMATION: Audit Report on "Lawrence Livermore National Laboratory's Laboratory Directed Research and Development

  11. Independent Oversight Inspection, Lawrence Livermore National Laboratory, Summary Report- July 2002

    Office of Energy Efficiency and Renewable Energy (EERE)

    Inspection of Environment, Safety, and Health and Emergency Management at the Lawrence Livermore National Laboratory

  12. Independent Oversight Inspection, Lawrence Livermore National Laboratory, Volume I- December 2004

    Office of Energy Efficiency and Renewable Energy (EERE)

    Inspection of Environment, Safety, and Health Management at the Lawrence Livermore National Laboratory

  13. Federal Facility Compliance Act: Conceptual Site Treatment Plan for Lawrence Livermore National Laboratory, Livermore, California

    SciTech Connect (OSTI)

    Not Available

    1993-10-01

    The Department of Energy (DOE) is required by section 3021(b) of the Resource Conservation and Recovery Act (RCRA), as amended by the Federal Facility Compliance Act (the Act), to prepare plans describing the development of treatment capacities and technologies for treating mixed waste. The Act requires site treatment plans (STPs or plans) to be developed for each site at which DOE generates or stores mixed waste and submitted to the State or EPA for approval, approval with modification, or disapproval. The Lawrence Livermore National Laboratory (LLNL) Conceptual Site Treatment Plan (CSTP) is the preliminary version of the plan required by the Act and is being provided to California, the US Environmental Protection Agency (EPA), and others for review. A list of the other DOE sites preparing CSTPs is included in Appendix 1.1 of this document. Please note that Appendix 1.1 appears as Appendix A, pages A-1 and A-2 in this document.

  14. Technical Safety Appraisal of the Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Not Available

    1990-12-01

    This report documents the results of the Technical Safety Appraisal (TSA) of the Lawrence Livermore National Laboratory (LLNL) (including the Site 300 area), Livermore, California, conducted from February 26 to April 5, 1990. The purpose of the assessment was to provide the Secretary of Energy with the status of Environment, Safety and Health (ES H) Programs at LLNL. LLNL is operated by the University of California for the Department of Energy (DOE), and is a multi-program, mission-oriented institution engaged in fundamental and applied research programs that require a multidisciplinary approach. 1 fig.

  15. TIMELINE: 60 Years of Computing at Lawrence Livermore National Lab |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy TIMELINE: 60 Years of Computing at Lawrence Livermore National Lab TIMELINE: 60 Years of Computing at Lawrence Livermore National Lab November 18, 2015 - 10:08am Addthis What are the key facts? The lab has been a leader in computing sciences since its founding in the 1950s. Click through the timeline above to see how LLNL has used computers to solve problems through the decades. The lab is partnering with industry other national labs to build next-gen supercomputers that

  16. Table 33. Oxygenated Motor Gasoline Prices by Grade, Sales Type...

    Gasoline and Diesel Fuel Update (EIA)

    - - - - - - - 1997 Average ... - - - - - - - - - - - - Subdistrict IA January ... - - - - - - - - - - - - February...

  17. Member Case Studies: LED Street Lighting Programs in Algona (IA), Asheville (NC), and Boston (MA)

    Broader source: Energy.gov [DOE]

    This May 8, 2013 webcast featured presentations from DOE Municipal Solid-State Street Lighting Consortium member cities about their experiences with LED street lighting. Presenters John Bilsten of...

  18. Targeted Energy Efficiency Expert Evaluation Report: Neal Smith Federal Building, Des Moines, IA

    SciTech Connect (OSTI)

    Fernandez, Nicholas; Goddard, James K.; Underhill, Ronald M.; Gowri, Krishnan

    2013-03-01

    This report summarizes the energy efficiency measures identified and implemented, and an analysis of the energy savings realized using low-cost/no-cost control system measures identified.

  19. CfA4: LIGHT CURVES FOR 94 TYPE Ia SUPERNOVAE (Journal Article...

    Office of Scientific and Technical Information (OSTI)

    Authors: Hicken, Malcolm ; Challis, Peter ; Kirshner, Robert P. ; Bakos, Gaspar ; Berlind, Perry ; Brown, Warren R. ; Caldwell, Nelson ; Calkins, Mike ; Falco, Emilio ; Fernandez, ...

  20. Hubble Residuals of Nearby SN Ia Are Correlated with Host Galaxy...

    Office of Scientific and Technical Information (OSTI)

    United States Language: English Subject: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CALIBRATION; COSMOLOGY; DUSTS; GALAXIES; LUMINOSITY; SKY; TESTING ...

  1. CfA3: 185 TYPE Ia SUPERNOVA LIGHT CURVES FROM THE CfA (Journal...

    Office of Scientific and Technical Information (OSTI)

    Authors: Hicken, Malcolm ; Challis, Peter ; Kirshner, Robert P. ; Bakos, Gaspar ; Berlind, Perry ; Brown, Warren R. ; Caldwell, Nelson ; Calkins, Mike ; Cho, Richard ; Contreras, ...

  2. NEAR-ULTRAVIOLET PROPERTIES OF A LARGE SAMPLE OF TYPE Ia SUPERNOVAE...

    Office of Scientific and Technical Information (OSTI)

    Hicken, Malcolm ; Kirshner, Robert P. ; Challis, Peter J. 6 ; Mazzali, Paolo 7 ; Schmidt, Brian P. 8 + Show Author Affiliations Steward Observatory, University of Arizona, ...

  3. Hubble Residuals of Nearby SN Ia Are Correlated with Host Galaxy...

    Office of Scientific and Technical Information (OSTI)

    Authors: Kelly, Patrick L. ; KIPAC, Menlo Park SLAC ; Hicken, Malcolm ; Harvard-Smithsonian Ctr. Astrophys. ; Burke, David L. ; KIPAC, Menlo Park SLAC ; Mandel, Kaisey S. ; ...

  4. Rock Creek I: 48-core iA Tera Scale Prototype

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    to make sure we don't miss any great ideas. Hence, my views are by design far "off the roadmap". Here is what I'd like to talk about * Please stop using acronyms and undefined...

  5. VARIABLE SODIUM ABSORPTION IN A LOW-EXTINCTION TYPE Ia SUPERNOVA...

    Office of Scientific and Technical Information (OSTI)

    We present the third detection of such variable absorption, based on six epochs of ... Country of Publication: United States Language: English Subject: 74 ATOMIC AND MOLECULAR ...

  6. IA REP0 SAND85-2809 Unlimited Release UC-92A

    Office of Scientific and Technical Information (OSTI)

    ... The initial research and development for HEGF was conducted ... These tests, together with modeling, produced a methodology ... experiments. -3- II. Experimental A. Experiment Design ...

  7. Type Ia supernova rate measurements to redshift 2.5 from CANDELS...

    Office of Scientific and Technical Information (OSTI)

    Authors: Rodney, Steven A. ; Riess, Adam G. ; Graur, Or ; Jones, David O. 1 ; Strolger, Louis-Gregory ; Dahlen, Tomas ; Casertano, Stefano ; Ferguson, Henry C. ; Koekemoer, Anton ...

  8. Color dispersion and Milky-Way-like reddening among type Ia supernovae...

    Office of Scientific and Technical Information (OSTI)

    Authors: Scolnic, Daniel M. ; Riess, Adam G. ; Rodney, Steven A. ; Brout, Dillon J. ; Jones, David O. 1 ; Foley, Ryan J. 2 ; Rest, Armin 3 + Show Author Affiliations ...

  9. "Report Date","U.S.",,,"PADD I",,,"PADD IA",,,"PADD IB",,,"PADD...

    U.S. Energy Information Administration (EIA) Indexed Site

    Residential Heating Oil Prices (Before and After Change in Aggregation Methodology)" ... and After Change in Aggregation Methodology)" "Report Date","U.S.",,,"PADD ...

  10. Type Ia supernovae from merging white dwarfs. II. Post-merger...

    Office of Scientific and Technical Information (OSTI)

    light curves rise and decline very slowly, and the spectra generally look peculiar, with weak features from intermediate mass elements but relatively strong carbon absorption. ...

  11. HIGH-VELOCITY LINE FORMING REGIONS IN THE TYPE Ia SUPERNOVA 2009ig...

    Office of Scientific and Technical Information (OSTI)

    TX 78712-0259 (United States) Carnegie Observatories, Las Campanas Observatory, Colina El Pino, Casilla 601 (Chile) George P. and Cynthia Woods Mitchell Institute for Fundamental ...

  12. A SEARCH FOR NEW CANDIDATE SUPER-CHANDRASEKHAR-MASS TYPE Ia SUPERNOVAE...

    Office of Scientific and Technical Information (OSTI)

    Authors: Scalzo, R. 1 ; Aldering, G. ; Aragon, C. ; Bailey, S. ; Childress, M. ; Fakhouri, H. K. ; Hsiao, E. Y. 2 ; Antilogus, P. ; Bongard, S. ; Canto, A. ; Cellier-Holzem, F. ...

  13. Type Ia supernovae yielding distances with 3-4% precision (Journal...

    Office of Scientific and Technical Information (OSTI)

    dwarf stars, vary systematically with their intrinsic color and light-curve decline rate. ... two progenitor properties account for their light-curve-widthcolorluminosity relation. ...

  14. Industrial ecology at Lawrence Livermore National Laboratory summary statement

    SciTech Connect (OSTI)

    Gilmartin, T.J.

    1996-06-04

    At Livermore our hope and our intention is to make important contributions to global sustainability by basing both our scientific and technological research and our business practices on the principles of industrial ecology. Current efforts in the following fields are documented: global security, global ecology, energy for transportation, fusion energy, materials sciences, environmental technology, and bioscience.

  15. Lawrence Livermore National Laboratory Technologies Available for Licensing

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    - Energy Innovation Portal LLNL Site Map Printable Version Share this resource About Search Categories (15) Advanced Materials Biomass and Biofuels Building Energy Efficiency Electricity Transmission Energy Analysis Energy Storage Geothermal Hydrogen and Fuel Cell Hydropower, Wave and Tidal Industrial Technologies Solar Photovoltaic Solar Thermal Startup America Vehicles and Fuels Wind Energy Partners (27) Visual Patent Search Success Stories Lawrence Livermore National Laboratory

  16. Environmental monitoring at the Lawrence Livermore Laboratory. 1979 annual report

    SciTech Connect (OSTI)

    Silver, W.J.; Lindeken, C.L.; White, J.H.; Buddemeir, R.W.

    1980-04-25

    Information on monitoring activities is reported in two sections for EDB/ERA/INIS. The first section covers all information reported except Appendix D, which gives details of sampling and analytical procedures for environmental monitoring used at Lawrence Livermore Laboratory. A separate abstract was prepared for Appendix D. (JGB)

  17. Technical Qualification Program Self-Assessment Report- Livermore Field Office- 2013

    Broader source: Energy.gov [DOE]

    The purpose of the Livermore Field Office (LFO) Teclmical Qualification Program (TQP) is to ensure that federal teclmical personnel with safety oversight responsibilities at defense nuclear facilities at Lawrence Livermore National Laboratory possess competence commensurate with responsibilities.

  18. The adaptive x-ray optics project at the Lawrence Livermore National...

    Office of Scientific and Technical Information (OSTI)

    The adaptive x-ray optics project at the Lawrence Livermore National Laboratory Citation Details In-Document Search Title: The adaptive x-ray optics project at the Lawrence Livermore ...

  19. Top 10 Things You Didn't Know About Lawrence Livermore National...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Livermore National Laboratory Top 10 Things You Didn't Know About Lawrence Livermore ... Learn more by browsing other articles in the "Top Things You Didn't Know About" series. ...

  20. Donald J. Kintzer named to the Lawrence Livermore and Los Alamos...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Donald J. Kintzer named to the Lawrence Livermore and Los Alamos Boards of Governors The ... LOS ALAMOS, NM, August 9, 2012-Norman J. Pattiz, chairman of Lawrence Livermore National ...

  1. Supplement analysis for continued operation of Lawrence Livermore National Laboratory and Sandia National Laboratories, Livermore. Volume 2: Comment response document

    SciTech Connect (OSTI)

    1999-03-01

    The US Department of Energy (DOE), prepared a draft Supplement Analysis (SA) for Continued Operation of Lawrence Livermore National Laboratory (LLNL) and Sandia National Laboratories, Livermore (SNL-L), in accordance with DOE`s requirements for implementation of the National Environmental Policy Act of 1969 (NEPA) (10 Code of Federal Regulations [CFR] Part 1021.314). It considers whether the Final Environmental Impact Statement and Environmental Impact Report for Continued Operation of Lawrence Livermore National Laboratory and Sandia National Laboratories, Livermore (1992 EIS/EIR) should be supplement3ed, whether a new environmental impact statement (EIS) should be prepared, or no further NEPA documentation is required. The SA examines the current project and program plans and proposals for LLNL and SNL-L, operations to identify new or modified projects or operations or new information for the period from 1998 to 2002 that was not considered in the 1992 EIS/EIR. When such changes, modifications, and information are identified, they are examined to determine whether they could be considered substantial or significant in reference to the 1992 proposed action and the 1993 Record of Decision (ROD). DOE released the draft SA to the public to obtain stakeholder comments and to consider those comments in the preparation of the final SA. DOE distributed copies of the draft SA to those who were known to have an interest in LLNL or SNL-L activities in addition to those who requested a copy. In response to comments received, DOE prepared this Comment Response Document.

  2. Bibliography of Yucca Mountain Project (YMP) publications at Lawrence Livermore National Laboratory, September 1977--March 1997

    SciTech Connect (OSTI)

    1997-03-01

    This report consists of a listing of Lawrence Livermore National Laboratory`s research items on the Yucca Mountain Project.

  3. No Slide Title

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    International Affairs (IA-1) Office of Resource Management (IA-10) . DAS for Africa, Middle East, Europe & Eurasia (IA-20) OFFICE OF INTERNATIONAL AFFAIRS (IA) Office of European and Eurasian Affairs (IA-21) Office of African and Middle Eastern Affairs (IA-22) DAS for Asia & the Americas (IA-30) Office of Asian Affairs (IA-31) Office of International Science & Technology Collaboration (IA-42) Office of American Affairs (IA-32) DAS for International Climate & Technology (IA-40)

  4. Lawrence Livermore National Laboratory environmental report for 1990

    SciTech Connect (OSTI)

    Sims, J.M.; Surano, K.A.; Lamson, K.C.; Balke, B.K.; Steenhoven, J.C.; Schwoegler, D.R.

    1990-01-01

    This report documents the results of the Environmental Monitoring Program at the Lawrence Livermore National Laboratory (LLNL) and presents summary information about environmental compliance for 1990. To evaluate the effect of LLNL operations on the local environment, measurements of direct radiation and a variety of radionuclides and chemical compounds in ambient air, soil, sewage effluent surface water, groundwater, vegetation, and foodstuff were made at both the Livermore site and at Site 300 nearly. LLNL's compliance with all applicable guides, standards, and limits for radiological and nonradiological emissions to the environment was evaluated. Aside from an August 13 observation of silver concentrations slightly above guidelines for discharges to the sanitary sewer, all the monitoring data demonstrated LLNL compliance with environmental laws and regulations governing emission and discharge of materials to the environment. In addition, the monitoring data demonstrated that the environmental impacts of LLNL are minimal and pose no threat to the public to or to the environment. 114 refs., 46 figs., 79 tabs.

  5. Sandia National Laboratories: Locations: Livermore, California: Life in

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Livermore: Education Education California and Bay Area schools California's strong commitment to supporting public education is shown in the state's constitution, which requires 40% of state revenues to be spent on education. About one-fifth of California's school districts are located in the San Francisco Bay Area, and most Bay Area students attend public school. The majority of Sandia employees live within the boundaries of the Alameda, Contra Costa, and San Joaquin County Offices of

  6. Sandia National Laboratories: Locations: Livermore, California: Life in

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Livermore: Housing Housing Sandia/California's unique location at the edge of the San Francisco Bay Area means that employees can choose from a wide range of housing options and prices to fit their needs while maintaining a reasonable daily commute. Those who prefer urban environments can live in San Francisco or Oakland, while those seeking more affordable housing options often turn east toward San Joaquin County and the Central Valley. And Sandia's proximity to Silicon Valley makes it very

  7. Associate director for Physical and Life Sciences, Lawrence Livermore

    National Nuclear Security Administration (NNSA)

    National Laboratory | National Nuclear Security Administration | (NNSA) Associate director for Physical and Life Sciences, Lawrence Livermore National Laboratory William Goldstein William Goldstein American Association for the Advancement of Science (AAAS) Fellow William Goldstein has been awarded the distinction of American Association for the Advancement of Science (AAAS) Fellow. Election as a fellow is an honor bestowed upon AAAS members by their peers. Goldstein was elected for

  8. Livermore team awarded for hydrogen production research | National Nuclear

    National Nuclear Security Administration (NNSA)

    Security Administration | (NNSA) team awarded for hydrogen production research Thursday, August 28, 2014 - 1:19pm Three Lawrence Livermore researchers have received the Department of Energy's 2014 Hydrogen Production R&D Award for their research in producing hydrogen photoelectrochemically - by splitting water using sunlight. Shared with collaborators from the National Renewable Energy Laboratory (NREL) and the University of Nevada, Las Vegas (UNLV), the award recognizes the team for its

  9. Lawrence Livermore National Laboratory's Lab-Corps Cohort Returns

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Invigorated | Department of Energy National Laboratory's Lab-Corps Cohort Returns Invigorated Lawrence Livermore National Laboratory's Lab-Corps Cohort Returns Invigorated May 31, 2016 - 1:54pm Addthis Researchers examine a "homemade" rare earth purification column packed with alginate beads with bioengineered microbes embedded in them. This LLNL-led effort holds promise for the development of an innovative, cost-effective, “green” bio-adsorption technology to sequester

  10. Industrial ecology at Lawrence Livermore National Laboratory summary statement

    SciTech Connect (OSTI)

    Gilmartin, T.J.

    1996-05-21

    This statement summarizes Lawrence Livermore National Laboratory`s committment to making important scientific, technological, and business contributions to global sustainability. The quest has many aspects, some socio-political or economic and some technological, and some in which the soft and hard sciences become indistinguishable, as in visionary national strategies, like Holland`s, and futuristic regional and city development plans, like those of Kagoshima and Chattanooga.

  11. Sandia National Laboratories: Livermore Valley Open Campus (LVOC)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    LVOC LVOC CREATE Visiting the LVOC Locations Livermore Valley Open Campus (LVOC) Open engagement Expanding opportunities for open engagement of the broader scientific community. Building on success Sandia's Combustion Research Facility pioneered open collaboration over 30 years ago. Access to DOE-funded capabilities Expanding access to foundational research at the Department of Energy national labs. Targeting the toughest problems Join us in multi-disciplinary R&D to solve large-scale

  12. Optical Design Capabilities at Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Lawson, J K

    2002-12-30

    Optical design capabilities continue to play the same strong role at Lawrence Livermore National Laboratory (LLNL) that they have played in the past. From defense applications to the solid-state laser programs to the Atomic Vapor Laser Isotope Separation (AVLIS), members of the optical design group played critical roles in producing effective system designs and are actively continuing this tradition. This talk will explain the role optical design plays at LLNL, outline current capabilities and summarize a few activities in which the optical design team has been recently participating.

  13. Storm water modeling at Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Veis, Christopher

    1996-05-01

    Storm water modeling is important to Lawrence Livermore National Laboratory (LLNL) for compliance with regulations that govern water discharge at large industrial facilities. Modeling is also done to study trend in contaminants and storm sewer infrastructure. The Storm Water Management Model (SWMM) was used to simulate rainfall events at LLNL. SWMM is a comprehensive computer model for simulation of urban runoff quantity and quality in storm and combined sewer systems. Due to time constraints and ongoing research, no modeling was completed at LLNL. With proper information about the storm sewers, a SWMM simulation of a rainfall event on site would be beneficial to storm sewer analyst.

  14. First-of-a-kind supercomputer at Lawrence Livermore available for

    National Nuclear Security Administration (NNSA)

    collaborative research | National Nuclear Security Administration | (NNSA) First-of-a-kind supercomputer at Lawrence Livermore available for collaborative research Friday, May 16, 2014 - 12:00pm Catalyst, a first-of-a-kind supercomputer at Lawrence Livermore National Laboratory, is available to industry collaborators to test big data technologies, architectures and applications. Developed by a partnership of Cray, Intel and Lawrence Livermore, this Cray CS300 high performance computing

  15. Environmental Survey preliminary report, Sandia National Laboratories, Livermore, California

    SciTech Connect (OSTI)

    Not Available

    1988-01-01

    This report contains the preliminary findings based on the first phase of an Environmental Survey at the Department of Energy (DOE) Sandia National Laboratories Livermore (SNLL), located at Livermore, California. The Survey is being conducted by DOE's Office of Environment, Safety and Health. The SNLL Survey is a portion of the larger, comprehensive DOE Environmental Survey encompassing all major operating facilities of DOE. The DOE Environmental Survey is one of a series of initiatives announced on September 18, 1985, by Secretary of Energy, John S. Herrington, to strengthen the environmental, safety, and health programs and activities within DOE. The purpose of the Environmental Survey is to identify, via a no fault'' baseline Survey of all the Department's major operating facilities, environmental problems and areas of environmental risk. The identified problem areas will be prioritized on a Department-wide basis in order of importance in 1989. The findings in this report are subject to modification based on the results from the Sampling and Analysis Phase of the Survey. The findings are also subject to modification based on comments from the Albuquerque Operations Office concerning the technical accuracy of the findings. The modified preliminary findings and any other appropriate changes will be incorporated into an Interim Report. The Interim Report will serve as the site-specific source for environmental information generated by the Survey, and ultimately as the primary source of information for the DOE-wide prioritization of environmental problems in the Survey Summary Report. 43 refs., 21 figs., 24 tabs.

  16. PCR Bartsch, Michael S. [Sandia National Lab. (SNL-CA), Livermore...

    Office of Scientific and Technical Information (OSTI)

    short tandem repeat (STR) amplification, and second strand cDNA synthesis. Public Library of Science Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA...

  17. Preliminary Notice of Violation, Lawrence Livermore National Laboratory- EA-2003-04

    Office of Energy Efficiency and Renewable Energy (EERE)

    Issued to the University of California related to an Extremity Radiological Overexposure at the Lawrence Livermore National Laboratory, (EA-2003-04)

  18. Preliminary Notice of Violation, Lawrence Livermore National Laboratory- EA-98-06

    Office of Energy Efficiency and Renewable Energy (EERE)

    Issued to the University of California related to Criticality Safety and the Quality Assurance Program at the Lawrence Livermore National Laboratory, (EA-98-06)

  19. Preliminary Notice of Violation, Lawrence Livermore National Laboratory- EA-2000-12

    Office of Energy Efficiency and Renewable Energy (EERE)

    Issued to the University of California related to Authorization Basis Issues at the Lawrence Livermore National Laboratory, (EA-2000-12)

  20. No Slide Title

    Office of Environmental Management (EM)

    for International Affairs (IA-1) Office of Resource Management (IA-10) . DAS for Africa, Middle East, Europe & Eurasia (IA-20) OFFICE OF INTERNATIONAL AFFAIRS (IA) Office of European and Eurasian Affairs (IA-21) Office of African and Middle Eastern Affairs (IA-22) DAS for Asia & the Americas (IA-30) Office of Asian Affairs (IA-31) Office of International Science & Technology Collaboration (IA-42) Office of American Affairs (IA-32) DAS for International Climate & Technology

  1. No Slide Title

    Broader source: Energy.gov (indexed) [DOE]

    for International Affairs (IA-1) Office of Resource Management (IA-10) . DAS for Africa, Middle East, Europe & Eurasia (IA-20) OFFICE OF INTERNATIONAL AFFAIRS (IA) Office of European and Eurasian Affairs (IA-21) Office of African and Middle Eastern Affairs (IA-22) DAS for Asia & the Americas (IA-30) Office of Asian Affairs (IA-31) Office of International Science & Technology Collaboration (IA-42) Office of American Affairs (IA-32) DAS for International Climate & Technology

  2. Lawrence Livermore National Laboratory (LLNL) Waste Minimization Program Plan

    SciTech Connect (OSTI)

    Heckman, R.A. ); Tang, W.R. )

    1989-08-04

    This Program Plan document describes the background of the Waste Minimization field at Lawrence Livermore National Laboratory (LLNL) and refers to the significant studies that have impacted on legislative efforts, both at the federal and state levels. A short history of formal LLNL waste minimization efforts is provided. Also included are general findings from analysis of work to date, with emphasis on source reduction findings. A short summary is provided on current regulations and probable future legislation which may impact on waste minimization methodology. The LLN Waste Minimization Program Plan is designed to be dynamic and flexible so as to meet current regulations, and yet is able to respond to an everchanging regulatory environment. 19 refs., 12 figs., 8 tabs.

  3. Reuse of waste cutting sand at Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Mathews, S., LLNL

    1998-02-25

    Lawrence Livermore National Laboratory (LLNL) examined the waste stream from a water jet cutting operation, to evaluate the possible reuse of waste garnet sand. The sand is a cutting agent used to shape a variety of materials, including metals. Nearly 70,000 pounds of waste sand is generated annually by the cutting operation. The Environmental Protection Department evaluated two potential reuses for the spent garnet sand: backfill in utility trenches; and as a concrete constituent. In both applications, garnet waste would replace the sand formerly purchases by LLNL for these purposes. Findings supported the reuse of waste garnet sand in concrete, but disqualified its proposed application as trench backfill. Waste sand stabilized in ac concrete matrix appeared to present no metals-leaching hazard; however, unconsolidated sand in trenches could potentially leach metals in concentrations high enough to threaten ground water quality. A technical report submitted to the San Francisco Bay Regional Water Quality Control Board was reviewed and accepted by that body. Reuse of waste garnet cutting sand as a constituent in concrete poured to form walkways and patios at LLNL was approved.

  4. Lawrence Livermore National Laboratory Working Reference Material Production Pla

    SciTech Connect (OSTI)

    Amy Wong; Denise Thronas; Robert Marshall

    1998-11-04

    This Lawrence Livermore National Laboratory (LLNL) Working Reference Material Production Plan was written for LLNL by the Los Alamos National Laboratory to address key elements of producing seven Pu-diatomaceous earth NDA Working Reference Materials (WRMS). These WRMS contain low burnup Pu ranging in mass from 0.1 grams to 68 grams. The composite Pu mass of the seven WRMS was designed to approximate the maximum TRU allowable loading of 200 grams Pu. This document serves two purposes: first, it defines all the operations required to meet the LLNL Statement of Work quality objectives, and second, it provides a record of the production and certification of the WRMS. Guidance provided in ASTM Standard Guide C1128-89 was used to ensure that this Plan addressed all the required elements for producing and certifying Working Reference Materials. The Production Plan was written to provide a general description of the processes, steps, files, quality control, and certification measures that were taken to produce the WRMS. The Plan identifies the files where detailed procedures, data, quality control, and certification documentation and forms are retained. The Production Plan is organized into three parts: a) an initial section describing the preparation and characterization of the Pu02 and diatomaceous earth materials, b) middle sections describing the loading, encapsulation, and measurement on the encapsulated WRMS, and c) final sections describing the calculations of the Pu, Am, and alpha activity for the WRMS and the uncertainties associated with these quantities.

  5. Top 10 Things You Didn't Know About Lawrence Livermore National Laboratory

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    | Department of Energy Livermore National Laboratory Top 10 Things You Didn't Know About Lawrence Livermore National Laboratory December 6, 2013 - 6:18pm Addthis The photo above is of a cryogenically cooled target in the National Ignition Facility as "seen" by the laser through the hohlraum's laser entrance hole. | Photo courtesy of Lawrence Livermore National Laboratory. The photo above is of a cryogenically cooled target in the National Ignition Facility as "seen" by

  6. The adaptive x-ray optics project at the Lawrence Livermore National...

    Office of Scientific and Technical Information (OSTI)

    The adaptive x-ray optics project at the Lawrence Livermore National Laboratory Citation Details In-Document Search Title: The adaptive x-ray optics project at the Lawrence ...

  7. The Current and Historical Distribution of Special Status Amphibians at the Livermore Site and Site 300

    SciTech Connect (OSTI)

    Hattem, M V; Paterson, L; Woollett, J

    2008-08-20

    65 surveys were completed in 2002 to assess the current distribution of special status amphibians at the Lawrence Livermore National Laboratory's (LLNL) Livermore Site and Site 300. Combined with historical information from previous years, the information presented herein illustrates the dynamic and probable risk that amphibian populations face at both sites. The Livermore Site is developed and in stark contrast to the mostly undeveloped Site 300. Yet both sites have significant issues threatening the long-term sustainability of their respective amphibian populations. Livermore Site amphibians are presented with a suite of challenges inherent of urban interfaces, most predictably the bullfrog (Rana catesbeiana), while Site 300's erosion issues and periodic feral pig (Sus scrofa) infestations reduce and threaten populations. The long-term sustainability of LLNL's special status amphibians will require active management and resource commitment to maintain and restore amphibian habitat at both sites.

  8. Preliminary Notice of Violation, Lawrence Livermore National Laboratory- EA-98-01

    Office of Energy Efficiency and Renewable Energy (EERE)

    Issued to University of California related to the Unplanned Personnel Contaminations and Radioactive Material Intakes at the Hazardous Waste Management Facilities at the Lawrence Livermore National Laboratory, (EA-98-01)

  9. Enterprise Assessments Targeted Review, Lawrence Livermore National Laboratory – February 2015

    Broader source: Energy.gov [DOE]

    Targeted Review of the Safety-Class Room Ventilation Systems and Associated Final Filtration Stages, and Review of Federal Assurance Capability at the Lawrence Livermore National Laboratory Plutonium Facility

  10. Exploring Viral Genomics at Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Kilpatrick, K; Hiddessen, A

    2007-08-22

    This summer I had the privilege of working at Lawrence Livermore National Laboratory under the Nonproliferation, Homeland and International Security Directorate in the Chemical and Biological Countermeasures Division. I worked exclusively on the Viral Identification and Characterization Initiative (VICI) project focusing on the development of multiplexed polymerase chain reaction (PCR) assays. The goal of VICI is to combine several disciplines such as molecular biology, microfluidics, and bioinformatics in order to detect viruses and identify them in order to effectively and quickly counter infectious disease, natural or engineered. The difficulty in such a countermeasure is that little is known about viral diversity due to the ever changing nature of these organisms. In response, VICI is developing a new microfluidic bioanalytical platform to detect known and unknown viruses by analyzing every virus in a sample by isolating them into picoliter sized droplets on a microchip and individually analyzing them. The sample will be injected into a channel of oil to form droplets that will contain viral nucleic acids that will be amplified using PCR. The multiplexed PCR assay will produce a series of amplicons for a particular virus genome that provides an identifying signature. A device will then detect whether or not DNA is present in the droplet and will sort the empty droplets from the rest. From this point, the amplified DNA is released from the droplets and analyzed using capillary gel electrophoresis in order to read out the series of amplicons and thereby determine the identity of each virus. The following figure depicts the microfluidic process. For the abovementioned microfluidic process to work, a method for detecting amplification of target viral nucleic acids that does not interfere with the multiplexed biochemical reaction is required for downstream sorting and analysis. In this report, the successful development of a multiplexed PCR assay using SYBR Green I

  11. Five Livermore and LANL Scientists Named "Most Influential Scientific

    National Nuclear Security Administration (NNSA)

    Minds" | National Nuclear Security Administration | (NNSA) Five Livermore and LANL Scientists Named "Most Influential Scientific Minds" Tuesday, July 29, 2014 - 3:24pm Three scientists from Los Alamos National Laboratory and two from Livermore National Laboratory were named to Thomson Reuters' list of The World's Most Influential Scientific Minds. The ranking recognizes researchers whose published work in their specialty areas has consistently been judged by peers to be of

  12. Phenotypic Data Collection and Sample Preparation for Genomics of Wood Formation and Cellulosic Biomass Traits in Sunflower: Ames, IA location.

    SciTech Connect (OSTI)

    Marek, Laura F.

    2011-06-17

    Three fields were planted in Ames in 2010, two association mapping fields, N3 and A, and a recombinant inbred line field, N13. Phenotype data and images were transferred to UGA to support genetic and genomic analyses of woody biomass-related traits.

  13. Vehicle Technologies Office Merit Review 2014: International Energy Agency (IEA IA-AMT) International Characterization Methods (Agreement ID:26462)

    Broader source: Energy.gov [DOE]

    Presentation given by Oak Ridge National Laboratory at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about International...

  14. Superfund Record of Decision (EPA Region 7): Vogel Paint and Wax, Maurice, IA. (First remedial action), September 1989. Final report

    SciTech Connect (OSTI)

    Not Available

    1989-09-20

    The Vogel Paint and Wax (VPW) site is an approximately two-acre disposal area two miles southwest of the town of Maurice, in Sioux County, Iowa. Adjacent land uses are primarily agricultural; however, several private residences are within one-quarter mile of the site. A surficial sand and gravel aquifer underlies the site and supplies nearby private wells and the Southern Sioux County Rural Water System, located a mile and one half southeast of the site. Paint sludge, resins, solvents, and other paint-manufacturing wastes were disposed of at the site between 1971 and 1979. VPW records indicate that approximately 43,000 gallons of aliphatic and aromatic hydrocarbons and 6,000 pounds of metals waste were buried at the site. The primary contaminants of concern affecting the soil and ground water are VOCs including benzene, toluene, and xylenes; and metals including chromium and lead. The selected remedial action for this site includes excavation of contaminated soil and separation of solid and liquid wastes; onsite bioremediation of 3,000 cubic yards of the contaminated soil in a fully contained surface impoundment unit, or onsite thermal treatment if soil contains high metal content; and stabilization of treated soil, if necessary to prevent leaching of metals, followed by disposal in the excavated area.

  15. Automotive Stirling Engine Market and Industrial Readiness Program (MIRP). Final report for Phase IA, September 15, 1982-July 31, 1984

    SciTech Connect (OSTI)

    Not Available

    1984-08-01

    A brief history of the project is presented. Included in appendices are the scope of work, management and cost plans, major milestones, and the digital engine control spare parts' list. (MHR)

  16. NNSA Livermore Field Office donates over 4,000 pounds of food to food banks

    National Nuclear Security Administration (NNSA)

    | National Nuclear Security Administration | (NNSA) Livermore Field Office donates over 4,000 pounds of food to food banks Friday, October 9, 2015 - 9:00am NNSA Blog The NNSA Livermore Field Office in California donated over 4,000 pounds of food to local food banks, food pantries and other local groups in support of the 2015 Feds Feed Families campaign. As part of the campaign LFO staff, family and friends worked with The Urban Farmers to pick 600 pounds of apples for donation to local

  17. Final Environmental Impact Statement/Environmental Impact Report for continued operation of Lawrence Livermore National Laboratory and Sandia National Laboratories, Livermore. Volume 2, Appendices A--D

    SciTech Connect (OSTI)

    Not Available

    1992-08-01

    This Environmental Impact Statement/Environmental Impact Report (EIS/EIR) is prepared pursuant to the National Environmental Policy Act (NEPA) and the California Environmental Quality Act (CEQA). This document analyzes the potential environmental impacts of the proposed action: continued operation, including near-term (within 5 to 10 years) proposed projects, of Lawrence Livermore National Laboratory (LLNL) and Sandia National Laboratories, Livermore (SNL, Livermore). Additionally, this document analyzes a no action alternative involving continuing operations at FY 1992 funding levels without further growth, a modification of operations alternative to reduce adverse environmental impacts of operations or facilities, and a shutdown and decommissioning alternative of UC discontinuing its management of LLNL after the current contract expires on September 30, 1992. This document assesses the environmental impacts of the Laboratories` operations on air and water quality, geological and ecological systems, occupational and public health risks, prehistoric and historic resources, endangered species, floodplains and wetlands, socioeconomic resources, hazardous waste management, site contamination, and other environmental issues. The EIS/EIR is divided into five volumes and two companion reports. This volume contains the Final EIS/EIR technical appendices which provide technical support for the analyses in Volume 1 and also provide additional information and references.

  18. Final Environmental Impact Statement and Environmental Impact Report for continued operation of Lawrence Livermore National Laboratory and Sandia National Laboratories, Livermore. Volume 4, Comments and responses

    SciTech Connect (OSTI)

    Not Available

    1992-08-01

    This Environmental Impact Statement/Environmental Impact Report (EIS/EIR) is prepared pursuant to the National Environmental Policy Act (NEPA) and the California Environmental Quality Act (CEQA). This document analyzes the potential environmental impacts of the proposed action: continued operation, including near-term (within 5 to 10 years) proposed projects, of Lawrence Livermore National Laboratory (LLNL) and Sandia National Laboratories, Livermore (SNL, Livermore). Additionally, this document analyzes a no action alternative involving continuing operations at FY 1992 funding levels without further growth, a modification of operations alternative to reduce adverse environmental impacts of operations or facilities, and a shutdown and decommissioning alternative of UC discontinuing its management of LLNL after the current contract expires on September 30, 1992. This document assesses the environmental impacts of the Laboratories` operations on air and water quality, geological and ecological systems, occupational and public health risks, prehistoric and historic resources, endangered species, floodplains and wetlands, socioeconomic resources, hazardous waste management, site contamination, and other environmental issues. The EIS/EIR is divided into five volumes and two companion reports. This volume contains copies of the written comments and transcripts of individual statements at the public hearing and the responses to them.

  19. Final Environmental Impact Statement and Environmental Impact Report for continued operation of Lawrence Livermore National Laboratory and Sandia National Laboratories, Livermore. Volume 1, Text

    SciTech Connect (OSTI)

    Not Available

    1992-08-01

    This Environmental Impact Statement/Environmental Impact Report (EIS/EIR) is prepared pursuant to the National Environmental Policy Act (NEPA) and the California Environmental Quality Act (CEQA). This document analyzes the potential environmental impacts of the proposed action: continued operation, including near-term (within 5 to 10 years) proposed projects, of Lawrence Livermore National Laboratory (LLNL) and Sandia National Laboratories, Livermore (SNL, Livermore). Additionally, this document analyzes a no action alternative involving continuing operations at FY 1992 funding levels without further growth, a modification of operations alternative to reduce adverse environmental impacts of operations or facilities, and a shutdown and decommissioning alternative of UC discontinuing its management of LLNL after the current contract expires on September 30, 1992. This document assesses the environmental impacts of the Laboratories` operations on air and water quality, geological and ecological systems, occupational and public health risks, prehistoric and historic resources, endangered species, floodplains and wetlands, socioeconomic resources, hazardous waste management, site contamination, and other environmental issues. The EIS/EIR is divided into five volumes and two companion reports. This volume contains the Final EIS/EIR, which in part relies on the detailed information in the appendices, and comprehensively discusses the proposed action, the alternatives, and the existing conditions and impacts of the proposed action and the alternatives.

  20. Final Environmental Impact Statement and Environmental Impact Report for continued operation of Lawrence Livermore National Laboratory and Sandia National Laboratories, Livermore. Executive summary

    SciTech Connect (OSTI)

    Not Available

    1992-08-01

    The US Department of Energy (DOE) and the Regents of the University of California (UC) propose the continued operation, including near-term proposed projects, of the Lawrence Livermore National Laboratory (LLNL). In addition, DOE proposes the continued operation, including near-term proposed projects, of Sandia National Laboratories, Livermore (SNL, Livermore). Continued operation plus proposed projects at the two Laboratories is needed so that the research and development missions established by Congress and the President can continue to be supported. As provided and encouraged by the National Environmental Policy Act (NEPA) and the California Environmental Quality Act (CEQA), DOE and UC have prepared this document as a joint Environmental Impact Statement (EIS) and Environmental Impact Report (EIR) to analyze the impacts of the proposed action. In addition, this document discusses a no action alternative for continuing operations at FY 1992 funding levels without further growth, a modification of operations alternative focused on specific adverse environmental impacts of operations or facilities, and a shutdown and decommissioning alternative. This document also examines the alternative of UC discontinuing its management of LLNL after the current contract expires on September 30, 1992. The environmental documentation process provides information to the public, government agencies, and decision makers about the environmental impacts of implementing the proposed and alternative actions. In addition, this environmental documentation identifies alternatives and possible ways to reduce or prevent environmental impacts. A list of the issues raised through the EIS/EIR scoping process is presented.

  1. Final Environmental Impact Statement and Environmental Impact Report for continued operation of Lawrence Livermore National Laboratory and Sandia National Laboratories, Livermore. Volume 3, Appendices F--M

    SciTech Connect (OSTI)

    Not Available

    1992-08-01

    This Environmental Impact Statement/Environmental Impact Report (EIS/EIR) is prepared pursuant to the National Environmental Policy Act (NEPA) and the California Environmental Quality Act (CEQA). This document analyzes the potential environmental impacts of the proposed action: continued operation, including near-term (within 5 to 10 years) proposed projects, of Lawrence Livermore National Laboratory (LLNL) and Sandia National Laboratories, Livermore (SNL, Livermore). Additionally, this document analyzes a no action alternative involving continuing operations at FY 1992 funding levels without further growth, a modification of operations alternative to reduce adverse environmental impacts of operations or facilities, and a shutdown and decommissioning alternative of UC discontinuing its management of LLNL after the current contract expires on September 30, 1992. This document assesses the environmental impacts of the Laboratories` operations on air and water quality, geological and ecological systems, occupational and public health risks, prehistoric and historic resources, endangered species, floodplains and wetlands, socioeconomic resources, hazardous waste management, site contamination, and other environmental issues. The EIS/EIR is divided into five volumes and two companion reports. This volume contains the Final EIS/EIR technical appendices F through M. Appendix L has been revised to reflect public information activities since publication of the Draft EIS/EIR. These appendices provide technical support for the analyses in Volume 1 and also provide additional information and references.

  2. --No Title--

    U.S. Energy Information Administration (EIA) Indexed Site

    - - - - - - December... - - - - - - 1997 Average... - - - - - - Subdistrict IA January... - - - - - - February... - - - - - - March... - - - - - -...

  3. Mitigation Monitoring and Reporting Program for continued operation of Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Not Available

    1992-08-01

    A Mitigation Monitoring and Reporting Program, required by the California Environmental Quality Act, was developed by UC as part of the Final EIS/EIR process. This document describing the program is a companion to the Final Environmental Impact Statement/Environmental Impact Report (EIS/EIR) for the Continued Operation of Lawrence Livermore National Laboratory (LLNL) and Sandia National Laboratories, Livermore (SNL, Livermore). The Final EIS/EIR analyzes the potential environmental impacts of the proposed action, which for the purposes of NEPA is: continued operation, including near-term (within 5 to 1 0 years) proposed projects, of LLNL and SNL, Livermore. The proposed action for the EIR is the renewal of the contract between DOE and UC for UC`s continued operation and management of LLNL. The Mitigation Monitoring and Reporting Program is for implementing and monitoring progress of measures taken to mitigate the significant impacts of the proposed action. A complete description of the impacts and proposed mitigations is in Section 5 of Volume I of the Final EIS/EIR. This report summarizes the mitigation measures, identifies the responsible party at the Laboratory for implementing the mitigation measure, states when monitoring will be implemented, when the mitigation measure will be in place and monitoring completed, and who will verify that the mitigation measure was implemented.

  4. Remedial investigation and feasibility study for the Lawrence Livermore National Laboratory Site 300 Pit 7 Complex

    SciTech Connect (OSTI)

    Taffet, M.J. ); Oberdorfer, J.A. ); McIlvride, W.A. )

    1989-10-01

    This report summarizes the results and conclusions of the investigation of tritium and other compounds in ground water in the vicinity of landfills at the Lawrence Livermore National Laboratory (LLNL) Site 300 Pit 7 Complex. 91 refs., 110 figs., 43 tabs.

  5. Electromechanical battery research and development at the Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Post, R.F.; Baldwin, D.E.; Bender, D.A.; Fowler, T.K.

    1993-06-01

    The concepts undergirding a funded program to develop a modular electromechanical battery (EMB) at the Lawrence Livermore National Laboratory are described. Example parameters for EMBs for electric and hybrid-electric vehicles are given, and the importance of the high energy recovery efficiency of EMBs in increasing vehicle range in urban driving is shown.

  6. Environmental monitoring at the Lawrence Livermore National Laboratory: 1986 annual report

    SciTech Connect (OSTI)

    Holland, R.C.; Buddemeier, R.W.; Brekke, D.D.

    1987-04-01

    This report documents the results of the environmental monitoring program at the Lawrence Livermore National Laboratory (LLNL) for 1986. To evaluate the effect of LLNL operations on the local environment, measurements of direct radiation and a variety of radionuclides and chemical pollutants in ambient air, soil, surface water, groundwater, vegetation, milk, foodstuff, and sewage effluents were made at both the Livermore site and nearby Site 300. This report was prepared to meet the requirements of DOE Order 5484.1. Evaluations are made of LLNL's compliance with all applicable guides, standards, and limits for radiological and nonradiological releases to the environment. The data indicate that no releases in excess of the applicable standards were made during 1986, and that LLNL operations had no adverse environmental impact.

  7. Lawrence Livermore National Laboratory Evaluated Nuclear Data Library in ENDF-V Format.

    Energy Science and Technology Software Center (OSTI)

    1986-08-06

    Version 00 This library contains the Evaluated Nuclear Data Library (ENDL) of the Lawrence Livermore National Laboratory as of 1984. The library has been converted to the ENDF-V format by Lawrence Livermore National Laboratory and the IAEA Nuclear Data Section. The library contains evaluated neutron cross sections and differential data and neutron induced photon production data for 94 materials and includes a total of 231,348 records. All evaluations are complete, covering all relevant reactions formore » incident energies from 10-4 eV to 20 MeV. All cross sections are represented in tabulated linearly interpolable form; resonance parameters are not used.« less

  8. Determination of effective acceleration for use in design at the Lawrence Livermore National Laboratory site

    SciTech Connect (OSTI)

    Coats, D.W. Jr.

    1991-09-01

    An rms-based effective acceleration study has been conducted for the Lawrence Livermore National Laboratory. The study used real time history records with epicentral distances, magnitudes and site conditions deemed appropriate for the LLNL Livermore site. Only those records having strong motion durations, T{sub D}{prime}, >3.0 seconds, and peak ground acceleration {ge} .4g were selected for determining the effective acceleration hazard curve used in design. These parameters are consistent with LLNL's use of broad-band Newmark-Hall Spectra for design, and the high peak instrumental accelerations corresponding to the return intervals of interest. Study results were used to modify the acceleration hazard curve for facility design/evaluation at LLNL.

  9. Determination of effective acceleration for use in design at the Lawrence Livermore National Laboratory site

    SciTech Connect (OSTI)

    Coats, D.W. Jr.

    1991-09-01

    An rms-based effective acceleration study has been conducted for the Lawrence Livermore National Laboratory. The study used real time history records with epicentral distances, magnitudes and site conditions deemed appropriate for the LLNL Livermore site. Only those records having strong motion durations, T{sub D}{prime}, >3.0 seconds, and peak ground acceleration {ge} .4g were selected for determining the effective acceleration hazard curve used in design. These parameters are consistent with LLNL`s use of broad-band Newmark-Hall Spectra for design, and the high peak instrumental accelerations corresponding to the return intervals of interest. Study results were used to modify the acceleration hazard curve for facility design/evaluation at LLNL.

  10. Lawrence Livermore's 'Site 300' looks back on 60 years of significant

    National Nuclear Security Administration (NNSA)

    scientific contributions | National Nuclear Security Administration | (NNSA) Lawrence Livermore's 'Site 300' looks back on 60 years of significant scientific contributions Monday, September 28, 2015 - 4:58pm NNSA Blog The entrance to Site 300 circa 1955. Sixty years ago, the University of California Radiation Laboratory began testing high explosives at what would become one of the nation's most sophisticated non-nuclear weapons testing sites, an 11 square-mile plot of rural grassland tucked

  11. Livermore Field Office sets core values as part of continuous improvement

    National Nuclear Security Administration (NNSA)

    process | National Nuclear Security Administration | (NNSA) Field Office sets core values as part of continuous improvement process Monday, November 23, 2015 - 9:18am NNSA Blog At their recent off-site continuous improvement session, the NNSA Livermore Field Office (LFO) in California unveiled their new set of core values: Integrity - Trustworthy, Reliable, Ethical We are responsible stewards of federal resources Collaboration - Communicate, Support, Team-Focused We work together,

  12. Lawrence Livermore and IBM Collaborate to Build New Brain-Inspired

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Supercomputer: Chip-architecture breakthrough accelerates path to exascale computing; helps computers tackle complex, cognitive tasks such as pattern recognition sensory processing | Department of Energy and IBM Collaborate to Build New Brain-Inspired Supercomputer: Chip-architecture breakthrough accelerates path to exascale computing; helps computers tackle complex, cognitive tasks such as pattern recognition sensory processing Lawrence Livermore and IBM Collaborate to Build New

  13. AUDIT REPORT Lawrence Livermore National Laboratory's Laser Inertial Fusion Energy Endeavor

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Laser Inertial Fusion Energy Endeavor OAI-M-16-13 July 2016 U.S. Department of Energy Office of Inspector General Office of Audits and Inspections Department of Energy Washington, DC 20585 July 7, 2016 MEMORANDUM FOR THE ADMINISTRATOR, NATIONAL NUCLEAR SECURITY ADMINISTRATION FROM: George W. Collard Deputy Inspector General for Audits and Inspections Office of Inspector General SUBJECT: INFORMATION: Audit Report on the "Lawrence Livermore National Laboratory's Laser Inertial Fusion Energy

  14. Meet a Machine: Explosive science is booming at Livermore Lab's Contained

    National Nuclear Security Administration (NNSA)

    Firing Facility | National Nuclear Security Administration | (NNSA) Explosive science is booming at Livermore Lab's Contained Firing Facility Thursday, July 28, 2016 - 2:59pm A key mission of the National Nuclear Security Administration is to maintain the safety, security, and effectiveness of the U.S. nuclear weapons stockpile without nuclear explosive testing. Data gathered from experiments at the Contained Firing Facility (CFF) help validate computer modeling about how the explosives and

  15. Lawrence Livermore National Laboratory Main Site FFA Under CERCLA Section 120, November 1, 1988 Summary

    Office of Environmental Management (EM)

    Lawrence Livermore National Laboratory (Main Site) Federal Facility Agreement Under CERCLA Section 120, November 1, 1988 State California Agreement Type Federal Facility Agreement Legal Driver(s) CERCLA Scope Summary Establish a procedural framework and schedule for developing, implementing, and monitoring appropriate response actions at the Site Parties DOE; USEPA; California Department of Health Services; California Regional Water Quality Control Board Date 11/1/1988 SCOPE * Establish a

  16. Ellen O. Tauscher named to Lawrence Livermore and Los Alamos Boards of

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Governors Tauscher named to Boards of Governors Ellen O. Tauscher named to Lawrence Livermore and Los Alamos Boards of Governors Tauscher has also been appointed as a member of the LANS/LLNS Boards' Mission Committee. August 27, 2012 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials.

  17. Signal and Image Processing Research at the Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Roberts, R S; Poyneer, L A; Kegelmeyer, L M; Carrano, C J; Chambers, D H; Candy, J V

    2009-06-29

    Lawrence Livermore National Laboratory is a large, multidisciplinary institution that conducts fundamental and applied research in the physical sciences. Research programs at the Laboratory run the gamut from theoretical investigations, to modeling and simulation, to validation through experiment. Over the years, the Laboratory has developed a substantial research component in the areas of signal and image processing to support these activities. This paper surveys some of the current research in signal and image processing at the Laboratory. Of necessity, the paper does not delve deeply into any one research area, but an extensive citation list is provided for further study of the topics presented.

  18. Environmental monitoring at the Lawrence Livermore National Laboratory. 1982 annual report

    SciTech Connect (OSTI)

    Griggs, K.S.; Gonzalez, M.A.; Buddemeier, R.W.

    1983-03-14

    Environmental monitoring efforts spanned air, water, vegetation and foodstuffs, and radiation doses. Monitoring data collection, analysis, and evaluation are presented for air, soils, sewage, water, vegetation and foodstuffs, milk, and general environmental radioactivity. Non-radioactive monitoring addresses beryllium, chemical effluents in sewage, noise pollution, and storm runoff and liquid discharge site pollutants. Quality assurance efforts are addressed. Five appendices present tabulated data; environmental activity concentration; dose calculation method; discharge limits to sanitary sewer systems of Livermore; and sampling and analytical procedures for environmental monitoring. (PSB)

  19. The value of assessments in Lawrence Livermore National Laboratory`s Waste Certification Programs

    SciTech Connect (OSTI)

    Ryan, E.M.

    1995-05-01

    This paper will discuss the value of assessments in Lawrence Livermore National Laboratory`s Waste Certification Programs by: introducing the organization and purpose of the LLNL Waste Certification Programs for transuranic, low-level, and hazardous waste; examining the differences in internal assessment/audit requirements for these programs; discussing the values and costs of assessments in a waste certification program; presenting practical recommendations to maximize the value of your assessment programs; and presenting improvements in LLNL`s waste certification processes that resulted from assessments.

  20. Mitigation Monitoring Program at Lawrence Livermore National Laboratory FY00 Annual Report

    SciTech Connect (OSTI)

    Mcguff, R R

    2003-12-01

    Lawrence Livermore National Laboratory (LLNL) has completed eight years of implementing the mitigation measures from the Final Environmental Impact Statement/Environmental Impact Report (EIS/EIR) for the Continued Operation of LLNL and Sandia National Laboratories (SNL), Livermore. This eighth annual report documents LLNL's implementation of the mitigation measures during the fiscal year ending September 30, 2000 (FY00). It provides background information on the mitigation measures, describes activities undertaken during FY00, and documents changes in the monitoring program. Table 1 on page 12, provides a numerical listing of each mitigation measure, the department responsible for implementing it, and the location within this report where the status is discussed. The discussion of the mitigation measures is organized by the University of California (UC)'s three categories of approaches to implementation: project-specific, service-level and administrative. Table 2 on page 19, Table 6 on page 55, and Table 7 on page 63 provide a detailed discussion of each mitigation measure, including LLNL's implementation strategy and the status as of the end of the fiscal year. Table 3 on page 37, Table 4 on page 46, and Table 5 on page 47 list each construction project undertaken in FY00 and the mitigation measures implemented.

  1. Site safety plan for Lawrence Livermore National Laboratory CERCLA investigations at site 300. Revision 2

    SciTech Connect (OSTI)

    Kilmer, J.

    1997-08-01

    Various Department of Energy Orders incorporate by reference, health and safety regulations promulgated by the Occupational Safety and Health Administration (OSHA). One of the OSHA regulations, 29 CFR 1910.120, Hazardous Waste Operations and Emergency Response, requires that site safety plans are written for activities such as those covered by work plans for Site 300 environmental investigations. Based upon available data, this Site Safety Plan (Plan) for environmental restoration has been prepared specifically for the Lawrence Livermore National Laboratory Site 300, located approximately 15 miles east of Livermore, California. As additional facts, monitoring data, or analytical data on hazards are provided, this Plan may need to be modified. It is the responsibility of the Environmental Restoration Program and Division (ERD) Site Safety Officer (SSO), with the assistance of Hazards Control, to evaluate data which may impact health and safety during these activities and to modify the Plan as appropriate. This Plan is not `cast-in-concrete.` The SSO shall have the authority, with the concurrence of Hazards Control, to institute any change to maintain health and safety protection for workers at Site 300.

  2. Lawrence Livermore National Laboratory Emergency Response Capability 2009 Baseline Needs Assessment Performance Assessment

    SciTech Connect (OSTI)

    Sharry, J A

    2009-12-30

    This document was prepared by John A. Sharry, LLNL Fire Marshal and Division Leader for Fire Protection and was reviewed by Sandia/CA Fire Marshal, Martin Gresho. This document is the second of a two-part analysis of Emergency Response Capabilities of Lawrence Livermore National Laboratory. The first part, 2009 Baseline Needs Assessment Requirements Document established the minimum performance criteria necessary to meet mandatory requirements. This second part analyses the performance of Lawrence Livermore Laboratory Emergency Management Department to the contents of the Requirements Document. The document was prepared based on an extensive review of information contained in the 2004 BNA, a review of Emergency Planning Hazards Assessments, a review of building construction, occupancy, fire protection features, dispatch records, LLNL alarm system records, fire department training records, and fire department policies and procedures. On October 1, 2007, LLNL contracted with the Alameda County Fire Department to provide emergency response services. The level of service called for in that contract is the same level of service as was provided by the LLNL Fire Department prior to that date. This Compliance Assessment will evaluate fire department services beginning October 1, 2008 as provided by the Alameda County Fire Department.

  3. Type B accident investigation board report of the July 2, 1997 curium intake by shredder operator at Building 513 Lawrence Livermore National Laboratory, Livermore, California. Final report

    SciTech Connect (OSTI)

    1997-08-01

    On July 2, 1997 at approximately 6:00 A.M., two operators (Workers 1 and 2), wearing approved personal protective equipment (PPE), began a shredding operation of HEPA filters for volume reduction in Building 513 (B-513) at Lawrence Livermore National Laboratory (LLNL). The waste requisitions indicated they were shredding filters containing {le} 1 {micro}Ci of americium-241 (Am-241). A third operator (Worker 3) provided support to the shredder operators in the shredding area (hot area) from a room that was adjacent to the shredding area (cold area). At Approximately 8:00 A.M., a fourth operator (Worker 4) relieved Worker 2 in the shredding operation. Sometime between 8:30 A.M. and 9:00 A.M., Worker 3 left the cold area to make a phone call and set off a hand and foot counter in Building 514. Upon discovering the contamination, the shredding operation was stopped and surveys were conducted in the shredder area. Surveys conducted on the workers found significant levels of contamination on their PPE and the exterior of their respirator cartridges. An exit survey of Worker 1 was conducted at approximately 10:05 A.M., and found contamination on his PPE, as well as on the exterior and interior of his respirator. Contamination was also found on his face, chest, back of neck, hair, knees, and mustache. A nose blow indicated significant contamination, which was later determined to be curium-244.

  4. Remedial investigation of the High-Explosives (HE) Process Area, Lawrence Livermore National Laboratory Site 300

    SciTech Connect (OSTI)

    Crow, N.B.; Lamarre, A.L.

    1990-08-01

    This report presents the results of a Remedial Investigation (RI) to define the extent of high explosives (HE) compounds and volatile organic compounds (VOCs) found in the soil, rocks, and ground water of the HE Process Area of Lawrence Livermore National Laboratory's (LLNL) Site 300 Facility. The report evaluates potential public health environmental risks associated with these compounds. Hydrogeologic information available before February 15, 1990, is included; however, chemical analyses and water-level data are reported through March 1990. This report is intended to assist the California Regional Water Quality Control Board (RWQCB)--Central Valley Region and the US Environmental Protection Agency (EPA) in evaluating the extent of environmental contamination of the LLNL HE Process Area and ultimately in designing remedial actions. 90 refs., 20 figs., 7 tabs.

  5. Lawrence Livermore National Laboratory site seismic safety program: summary of findings

    SciTech Connect (OSTI)

    Scheimer, J.F.

    1985-07-01

    This report summarizes the final assessments of geologic hazards at the Lawrence Livermore National Laboratory (LLNL). Detailed discussions of investigations are documented in a series of reports produced by LLNL's Site Seismic Safety Program and their consultants. The Program conducted a probabilistic assessment of hazards at the site as a result of liquefaction, landslide, and strong ground shaking, using existing models to explicitly treat uncertainties. The results indicate that the Greenville and Las Positas-Verona Fault systems present the greatest hazard to the LLNL site as a result of ground shaking, with a lesser contribution from the Calaveras Fault. Other, more distant fault systems do not materially contribute to the hazard. No evidence has been found that the LLNL site will undergo soil failures such as landslides or liquefaction. In addition, because of the locations and ages of the faults in the LLNL area, surface ground rupture during an earthquake is extremely unlikely.

  6. Hazardous waste site assessment: Inactive landfill, Site 300, Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Not Available

    1985-01-01

    This report presents the results of an investigation of an inactive landfill (Pit 6) at Lawrence Livermore National Laboratory's (LLNL) Site 300. The primary objectives were to: collect and review background information pertaining to past waste disposal practices and previous environmental characterization studies; conduct a geophysical survey of the landfill area to locate the buried wastes; conduct a hydrogeologic investigation to provide additional data on the rate and direction of groundwater flow, the extent of any groundwater contamination, and to investigate the connection, if any, of the shallow groundwater beneath the landfill with the local drinking water supply; conduct a risk assessment to identify the degree of threat posed by the landfill to the public health and environment; compile a preliminary list of feasible long-term remedial action alternatives for the landfill; and develop a list of recommendations for any interim measures necessary at the landfill should the long-term remedial action plan be needed.

  7. New 100 mm Gun Assembly Installation at Lawrence Livermore National Laboratory High Explosives Applications Facility

    SciTech Connect (OSTI)

    Vandersall, K S; Lee, R A; Chiao, P I; Garcia, F; Travis, J O; Forbes, J W

    2003-10-28

    A new 100mm gun assembly was recently installed and tested at Lawrence Livermore National Laboratories located in the High Explosives Applications Facility (HEAF). Thiot Ingenierie performed the design of the replacement barrel, based on improvements to the initial design. This design incorporated barrel and breech sections forged from CLARM series high-strength alloys obtained from Tecphy Corporation and machined by Manufacture de Forage. Part of the improvement of the design was implementing a laser alignment system for quick and accurate barrel alignment checks. This laser is also used to align the target assembly. This paper will detail the design changes incorporated into the installation, the testing process, and future direction of research for the new gun.

  8. Lightning Protection Certification for High Explosives Facilities at Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Clancy, T J; Brown, C G; Ong, M M; Clark, G A

    2006-01-11

    Presented here is an innovation in lighting safety certification, and a description of its implementation for high explosives processing and storage facilities at Lawrence Livermore National Laboratory. Lightning rods have proven useful in the protection of wooden structures; however, modern structures made of rebar, concrete, and the like, require fresh thinking. Our process involves a rigorous and unique approach to lightning safety for modern buildings, where the internal voltages and currents are quantified and the risk assessed. To follow are the main technical aspects of lightning protection for modern structures and these methods comply with the requirements of the National Fire Protection Association, the National Electrical Code, and the Department of Energy [1][2]. At the date of this release, we have certified over 70 HE processing and storage cells at our Site 300 facility.

  9. Title I conceptual design for Pit 6 landfill closure at Lawrence Livermore National Laboratory Site 300

    SciTech Connect (OSTI)

    MacDonnell, B.A.; Obenauf, K.S.

    1996-08-01

    The objective of this design project is to evaluate and prepare design and construction documents for a closure cover cap for the Pit 6 Landfill located at Lawrence Livermore National Laboratory Site 300. This submittal constitutes the Title I Design (Conceptual Design) for the closure cover of the Pit 6 Landfill. A Title I Design is generally 30 percent of the design effort. Title H Design takes the design to 100 percent complete. Comments and edits to this Title I Design will be addressed in the Title II design submittal. Contents of this report are as follows: project background; design issues and engineering approach; design drawings; calculation packages; construction specifications outline; and construction quality assurance plan outline.

  10. High Energy, Short Pulse Fiber Injection Lasers at Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Dawson, J W; Messerly, M J; Phan, H H; Crane, J K; Beach, R J; Siders, C W; Barty, C J

    2008-09-10

    A short pulse fiber injection laser for the Advanced Radiographic Capability (ARC) on the National Ignition Facility (NIF) has been developed at Lawrence Livermore National Laboratory (LLNL). This system produces 100 {micro}J pulses with 5 nm of bandwidth centered at 1053 nm. The pulses are stretched to 2.5 ns and have been recompressed to sub-ps pulse widths. A key feature of the system is that the pre-pulse power contrast ratio exceeds 80 dB. The system can also precisely adjust the final recompressed pulse width and timing and has been designed for reliable, hands free operation. The key challenges in constructing this system were control of the signal to noise ratio, dispersion management and managing the impact of self phase modulation on the chirped pulse.

  11. Lawrence Livermore National Laboratory low-level waste systems performance assessment

    SciTech Connect (OSTI)

    Not Available

    1990-11-01

    This Low-Level Radioactive Waste (LLW) Systems Performance Assessment (PA) presents a systematic analysis of the potential risks posed by the Lawrence Livermore National Laboratory (LLNL) waste management system. Potential risks to the public and environment are compared to established performance objectives as required by DOE Order 5820.2A. The report determines the associated maximum individual committed effective dose equivalent (CEDE) to a member of the public from LLW and mixed waste. A maximum annual CEDE of 0.01 mrem could result from routine radioactive liquid effluents. A maximum annual CEDE of 0.003 mrem could result from routine radioactive gaseous effluents. No other pathways for radiation exposure of the public indicated detectable levels of exposure. The dose rate, monitoring, and waste acceptance performance objectives were found to be adequately addressed by the LLNL Program. 88 refs., 3 figs., 17 tabs.

  12. Environmental impact report addendum for the continued operation of Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Weston, R. F.

    1996-10-01

    An environmental impact statement/environmental impact report (ES/EIR) for the continued operation and management of Lawrence Livermore National Laboratory (LLNL) was prepared jointly by the U.S. Department of Energy (DOE) and the University of California (UC). The scope of the document included near-term (within 5-10 years) proposed projects. The UC Board of Regents, as state lead agency under the California Environmental Quality Act (CEQA), certified and adopted the EIR by issuing a Notice of Determination on November 20, 1992. The DOE, as the lead federal agency under the National Environmental Policy Act (NEPA), adopted a Record of Decision for the ES on January 27, 1993 (58 Federal Register [FR] 6268). The DOE proposed action was to continue operation of the facility, including near-term proposed projects. The specific project evaluated by UC was extension of the contract between UC and DOE for UC`s continued operation and management of LLNL (both sites) from October 1, 1992, through September 30, 1997. The 1992 ES/EIR analyzed impacts through the year 2002. The 1992 ES/EIR comprehensively evaluated the potential environmental impacts of operation and management of LLNL within the near-term future. Activities evaluated included programmatic enhancements and modifications of facilities and programs at the LLNL Livermore site and at LLNL`s Experimental Test Site (Site 300) in support of research and development missions 2048 established for LLNL by Congress and the President. The evaluation also considered the impacts of infrastructure and building maintenance, minor modifications to buildings, general landscaping, road maintenance, and similar routine support activities.

  13. Environmental assessment for the Explosive Waste Treatment Facility at Site 300, Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    1995-11-01

    Lawrence Livermore National Laboratory proposes to build, permit, and operate the Explosive Waste Treatment Facility (EWTF) to treat explosive waste at LLNL`s Experimental Test Site, Site 300. It is also proposed to close the EWTF at the end of its useful life in accordance with the regulations. The facility would replace the existing Building 829 Open Burn Facility (B829) and would treat explosive waste generated at the LLNL Livermore Site and at Site 300 either by open burning or open detonation, depending on the type of waste. The alternatives addressed in the 1992 sitewide EIS/EIR are reexamined in this EA. These alternatives included: (1) the no-action alternative which would continue open burning operations at B829; (2) continuation of only open burning at a new facility (no open detonation); (3) termination of open burning operations with shipment of explosive waste offsite; and (4) the application of alternative treatment technologies. This EA examines the impact of construction, operation, and closure of the EWTF. Construction of the EWTF would result in the clearing of a small amount of previously disturbed ground. No adverse impact is expected to any state or federal special status plant or animal species (special status species are classified as threatened, endangered, or candidate species by either state or federal legislation). Operation of the EWTF is expected to result in a reduced threat to involved workers and the public because the proposed facility would relocate existing open burning operations to a more remote area and would incorporate design features to reduce the amount of potentially harmful emissions. No adverse impacts were identified for activities necessary to close the EWTF at the end of its useful life.

  14. Targeted Energy Efficiency Expert Evaluation (E4) Report: Iowa City Federal Building and U.S. Post Office, Iowa City, IA

    SciTech Connect (OSTI)

    Goddard, James K.; Fernandez, Nicholas; Underhill, Ronald M.; Gowri, Krishnan

    2013-03-01

    Final report summarizing Targeted E4 measures and energy savings analysis for the Iowa City Federal Building and Post Office.

  15. Superfund Record of Decision (EPA Region 7): Des Moines TCE Site, Operable Unit 3, Des Moines, IA. (Second remedial action), September 1992. Final report

    SciTech Connect (OSTI)

    Not Available

    1992-09-18

    The Des Moines TCE site is located southwest of downtown Des Moines, Polk County, Iowa. Land use in the area is predominantly industrial and commercial, and part of the site lies within the floodplain of the Raccoon River. Water from the Des Moines Water Works north infiltration gallery was found to be contaminated with trichloroethylene (TCE), dichloroethylene (DCE), and vinyl chloride at levels above accepted drinking water standards. The ROD addresses OU3, which encompasses potential sources of ground water contamination in an area north of the Raccoon River. The selected remedial action for OU3 includes no action with periodic groundwater monitoring.

  16. OES-IA Annex IV: Environmental Effects of Marine and Hydrokinetic Devices - Report from the Experts’ Workshop September 27th – 28th 2010 Clontarf Castle, Dublin Ireland

    SciTech Connect (OSTI)

    Copping, Andrea E.; O'Toole, Michael J.

    2010-12-02

    An experts' workshop was convened in Dublin Ireland September 27th – 28th 2010 in support of IEA Ocean Energy Systems Implementing Agreement Annex IV. PNNL was responsible for organizing the content of the workshop, overseeing the contractors (Irish Marine Institute) hosting the event, presenting material on Annex IV and materials applicable to the workshop intent. PNNL is also overseeing a contractor (Wave Energy Center/University of Plymouth – WEC/UP) in the collection and analysis of the Annex IV data. Fifty-eight experts from 8 countries attended the workshop by invitation, spending two days discussing the needs of Annex IV. Presentations by DOE (background on Annex IV), PNNL (process for developing Annex IV; presentation of the draft database for PNNL project, plans for incorporating Annex IV data), WEC/UP on the environmental effect matrix, and four MHK developers (two from the UK, one from Ireland and one from Sweden; each discussing their own projects and lessons learned for measuring and mitigating environmental effects, as well as interactions with consenting [permitting] processes) helped provide background. The workshop participants worked part of the time in the large group and most of the time in four smaller breakout groups. Participants engaged in the process and provided a wealth of examples of MHK environmental work, particularly in the European nations. They provided practical and actionable advice on the following: • Developing the Annex IV database, with specific uses and audiences • Strong consensus that we should collect detailed metadata on available data sets, rather than attempting to draw in copious datasets. The participants felt there would then be an opportunity to then ask for specific set of data as needed, with specific uses and ownership of the data specified. This is particularly important as many data collected, particularly in Europe but also in Canada, are proprietary; developers were not comfortable with the idea of handing over all their environmental effects data, but all said they would entertain the request if they specifics were clear. • The recommendation was to collect metadata via an online interactive form, taking no more than one hour to complete. • Although the idea of cases representing the “best practices” was recognized as useful, the participants pointed out that there are currently so few MHK projects in the water, that any and all projects were appropriate to highlight as “cases”. There was also discomfort at the implication that “best practices” implied “lesser practices”; this being unhelpful to a new and emerging industry. • Workshop participants were asked if they were willing to continue to engage in the Annex IV process; all expressed willingness. The workshop was successful in adequately addressing its objectives and through participation and interaction in the breakout sessions around the various topics. As a result of the workshop, many delegates are now better informed and have a greater understanding of the potential environmental effects of MHK devices on the marine environment. There is now a greater sense of understanding of the issues involved and consensus by those regulators, developers and scientists who attended the workshop. A strong network has also been built over the two days between European and US/Canadian technical experts in wave and tidal energy.

  17. Evaluation of Cavity Collapse and Surface Crater Formation for Selected Lawrence Livermore National Laboratory Tests - 2011

    SciTech Connect (OSTI)

    Pawloski, G A

    2011-02-28

    This report evaluates collapse evolution for selected Lawrence Livermore National Laboratory (LLNL) underground nuclear tests at the Nevada National Security Site (NNSS, formerly called the Nevada Test Site). The work is being done at the request of National Security Technologies, LLC (NSTec) and supports the Department of Energy, National Nuclear Security Administration for the Nevada Site Office Borehole Management Program (BMP). The primary objective of this program is to close (plug) weapons program legacy boreholes that are deemed no longer useful. Safety decisions must be made before a crater area, or potential crater area, can be reentered for any work. Our statements on cavity collapse and crater formation are input into their safety decisions. The BMP is an on-going program to address hundreds of boreholes at the NTS. Each year NSTec establishes a list of holes to be addressed. They request the assistance of the Lawrence Livermore National Laboratory and Los Alamos National Laboratory Containment Programs to provide information related to the evolution of collapse history and make statements on completeness of collapse as relates to surface crater stability. These statements do not include the effects of erosion that may modify the collapse craters over time. They also do not address possible radiation dangers that may be present. Subject matter experts from the LLNL Containment Program who had been active in weapons testing activities performed these evaluations. Information used included drilling and hole construction, emplacement and stemming, timing and sequence of the selected test and nearby tests, geology, yield, depth of burial, collapse times, surface crater sizes, cavity and crater volume estimations, ground motion, and radiological release information. Both classified and unclassified data were reviewed. Various amounts of information are available for these tests, depending on their age and other associated activities. Lack of data can hamper

  18. Update of Earthquake Strong-Motion Instrumentation at Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Murray, Robert C.

    2013-09-01

    Following the January 1980 earthquake that was felt at Lawrence Livermore National Laboratory (LLNL), a network of strong-motion accelerographs was installed at LLNL. Prior to the 1980 earthquake, there were no accelerographs installed. The ground motion from the 1980 earthquake was estimated from USGS instruments around the Laboratory to be between 0.2 – 0.3 g horizontal peak ground acceleration. These instruments were located at the Veterans Hospital, 5 miles southwest of LLNL, and in San Ramon, about 12 miles west of LLNL. In 2011, the Department of Energy (DOE) requested to know the status of our seismic instruments. We conducted a survey of our instrumentation systems and responded to DOE in a letter. During this survey, it was found that the recorders in Buildings 111 and 332 were not operational. The instruments on Nova had been removed, and only three of the 10 NIF instruments installed in 2005 were operational (two were damaged and five had been removed from operation at the request of the program). After the survey, it was clear that the site seismic instrumentation had degraded substantially and would benefit from an overhaul and more attention to ongoing maintenance. LLNL management decided to update the LLNL seismic instrumentation system. The updated system is documented in this report.

  19. Overview of crash and impact analysis at Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Logan, R.W.; Tokarz, F.J.

    1993-08-05

    This work provides a brief overview of past and ongoing efforts at Lawrence Livermore National Laboratory (LLNL) in the area of finite-element modeling of crash and impact problems. The process has been one of evolution in several respects. One aspect of the evolution has been the continual upgrading and refinement of the DYNA, NIKE, and TOPAZ family of finite-element codes. The major missions of these codes involve problems where the dominant factors are high-rate dynamics, quasi-statics, and heat transfer, respectively. However, analysis of a total event, whether it be a shipping container drop or an automobile/barrier collision, may require use or coupling or two or more of these codes. Along with refinements in speed, contact capability, and element technology, material model complexity continues to evolve as more detail is demanded from the analyses. A more recent evolution has involved the mix of problems addressed at LLNL and the direction of the technology thrusts. A pronounced increase in collaborative efforts with the civilian and private sector has resulted in a mix of complex problems involving synergism between weapons applications (shipping container, earth penetrator, missile carrier, ship hull damage) and a more broad base of problems such as vehicle impacts as discussed herein.

  20. Lawrence Livermore National Laboratory Site Seismic Safety Program: Summary of findings

    SciTech Connect (OSTI)

    Scheimer, J.F.; Burkhard, N.R.; Emerson, D.O.

    1991-05-01

    This report summarizes the final assessments of geologic hazards at the Lawrence Livermore National Laboratory (LLNL) and includes a revision of the peak acceleration hazard curve. Detailed discussions of investigations are documented in a series of reports produced by LLNL's Site Seismic Safety Program and their consultants. The Program conducted a probabilistic assessment of hazards at the site as a result of liquefaction, landslide, and strong ground shaking, using existing models to explicitly treat uncertainties. The results indicate the Greenville and Las Positas-Verona Fault systems present the greatest hazard to the LLNL site as a result of ground shaking, with a lesser contribution from the Calaveras Fault. Other, more distant fault systems do not materially contribute to the hazard. No evidence has been found that the LLNL site will undergo soil failures such as landslides or liquefaction. In addition, because of the locations and ages of the faults in the LLNL area, surface ground rupture during an earthquake is extremely unlikely. 21 refs., 3 figs.

  1. Summary Report of Summer 2009 NGSI Human Capital Development Efforts at Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Dougan, A; Dreicer, M; Essner, J; Gaffney, A; Reed, J; Williams, R

    2009-11-16

    In 2009, Lawrence Livermore National Laboratory (LLNL) engaged in several activities to support NA-24's Next Generation Safeguards Initiative (NGSI). This report outlines LLNL's efforts to support Human Capital Development (HCD), one of five key components of NGSI managed by Dunbar Lockwood in the Office of International Regimes and Agreements (NA-243). There were five main LLNL summer safeguards HCD efforts sponsored by NGSI: (1) A joint Monterey Institute of International Studies/Center for Nonproliferation Studies-LLNL International Safeguards Policy and Information Analysis Course; (2) A Summer Safeguards Policy Internship Program at LLNL; (3) A Training in Environmental Sample Analysis for IAEA Safeguards Internship; (4) Safeguards Technology Internships; and (5) A joint LLNL-INL Summer Safeguards Lecture Series. In this report, we provide an overview of these five initiatives, an analysis of lessons learned, an update on the NGSI FY09 post-doc, and an update on students who participated in previous NGSI-sponsored LLNL safeguards HCD efforts.

  2. Introduction to Proceedings of SPIE: Optical Engineering at the Lawrence Livermore National Laboratory II

    SciTech Connect (OSTI)

    Wuest, C R; Lane, M A

    2004-02-20

    The second annual conference on optical engineering at Lawrence Livermore National Laboratory (LLNL) focused entirely on National Ignition Facility (NIF) activities. NIF's 192-beam UV laser system is the world's largest optical and optomechanical system. This past year, a decade-long design, construction, fabrication, and installation effort culminated in the commissioning of the first four laser beams in this 30,000 square meter facility. This flashlamp-pumped Nd:glass laser system is built on a scale unprecedented in laser R&D. Nearly every aspect of the NIF design is unconventional, from the 40 x 40-cm-square size of each beam, to the 40 varieties of telephone-booth-size modular optical assemblies, to the elevated configuration of the 200-m-long, class-100 beamlines that converge on a 10-m-diameter target chamber. A large technical staff and many industrial partners were needed to reach the current state of accomplishment, including development of a number of advanced optical materials and fabrication technologies.

  3. Cost benefit analysis of waste compaction alternatives at Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Not Available

    1990-11-01

    This report presents a cost benefit analysis of the potential procurement and operation of various solid waste compactors, or, of the use of commercial compaction services, for compaction of solid transuranic (TRU), low-level radioactive, hazardous, and mixed wastes at Lawrence Livermore National Laboratory (LLNL) Hazardous Waste Management (HWM) facilities. The cost benefit analysis was conducted to determine if increased compaction capacity at HWM might afford the potential for significant waste volume reduction and annual savings in material, shipping, labor, and disposal costs. In the following cost benefit analysis, capital costs and recurring costs of increased HWM compaction capabilities are considered. Recurring costs such as operating and maintenance costs are estimated based upon detailed knowledge of system parameters. When analyzing the economic benefits of enhancing compaction capabilities, continued use of the existing HWM compaction units is included for comparative purposes. In addition, the benefits of using commercial compaction services instead of procuring a new compactor system are evaluated. 31 refs., 1 fig., 6 tabs.

  4. Research on ambient temperature passive magnetic bearings at the Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Post, R.F.; Ryitov, D.D.` Smith, J.R.; Tung, L.S.

    1997-04-01

    Research performed at the Lawrence Livermore National Laboratory on the equilibrium and stability of a new class of ambient-temperature passive bearing systems is described. The basic concepts involved are: (1) Stability of the rotating system is only achieved in the rotating state. That is, disengaging mechanical systems are used to insure stable levitation at rest (when Earnshaw`s theorem applies). (2) Stable levitation by passive magnetic elements can be achieved if the vector sum of the force derivatives of the several elements of the system is net negative (i.e. restoring) for axial, transverse, and tilt-type perturbations from equilibrium. To satisfy the requirements of (2) using only permanent magnet elements we have employed periodic ``Halbach arrays.`` These interact with passive inductive loaded circuits and act as stabilizers, with the primary forces arising from axially symmetric permanent-magnet elements. Stabilizers and other elements needed to create compact passive magnetic bearing systems have been constructed. Novel passive means for stabilizing classes of rotor-dynamic instabilities in such systems have also been investigated.

  5. Workplace investigation of increased diagnosis of malignant melanoma among employees of Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Moore, D.H. II; Patterson, H.W.; Hatch, F.; Discher, D.; Schneider, J.S.; Bennett, D.

    1994-08-01

    Based on rates for the surrounding communities, the diagnosis rate of malignant melanoma for employees of Lawrence Livermore National Laboratory (LLNL) during 1972 to 1977 was three to four times higher than expected. In 1984 Austin and Reynolds concluded, as a result of a case-control study, that five occupational factors were {open_quotes}causally associated{close_quotes} with melanoma risk at LLNL. These factors were: (1) exposure to radioactive materials, (2) work at Site 300, (3) exposure to volatile photographic chemicals, (4) presence at the Pacific Test Site, and (5) chemist duties. Subsequent reviews of the Austin and Reynolds report concluded that the methods used were appropriate and correctly carried out. These reports did determine, however, that Austin and Reynolds` conclusion concerning a causal relationship between occupational factors and melanoma among employees was overstated. There is essentially no supporting evidence linking the occupational factors with melanoma from animal studies or human epidemiology. Our report summarizes the results of further investigation of potential occupational factors.

  6. Routine environmental audit of the Sandia National Laboratories, California, Livermore, California

    SciTech Connect (OSTI)

    Not Available

    1994-03-01

    This report documents the results of the Routine Environmental Audit of the Sandia National Laboratories, Livermore, California (SNL/CA). During this audit the activities the Audit Team conducted included reviews of internal documents and reports from preview audits and assessments; interviews with US Department of Energy (DOE), State of California regulators, and contractor personnel; and inspections and observations of selected facilities and operations. The onsite portion of the audit was conducted from February 22 through March 4, 1994, by the DOE Office of Environmental Audit (EH-24), located within the Office of Environment, Safety, and Health (EH). The audit evaluated the status of programs to ensure compliance with Federal, state, and local environmental laws and regulations; compliance with DOE Orders, guidance, and directives; and conformance with accepted industry practices and standards of performance. The audit also evaluated the status and adequacy of the management systems developed to address environmental requirements. The audit`s functional scope was comprehensive and included all areas of environmental management and a programmatic evaluation of NEPA and inactive waste sites.

  7. Investigating Sources of Toxicity in Stormwater: Algae Mortality in Runoff Upstream of the Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Campbell, C G; Folks, K; Mathews, S; Martinelli, R

    2003-10-06

    A source evaluation case study is presented for observations of algae toxicity in an intermittent stream passing through the Lawrence Livermore National Laboratory near Livermore, California. A five-step procedure is discussed to determine the cause of water toxicity problems and to determine appropriate environmental management practices. Using this approach, an upstream electrical transfer station was identified as the probable source of herbicides causing the toxicity. In addition, an analytical solution for solute transport in overland flow was used to estimate the application level of 40 Kg/ha. Finally, this source investigation demonstrates that pesticides can impact stream water quality regardless of application within levels suggested on manufacturer labels. Environmental managers need to ensure that pesticides that could harm aquatic organisms (including algae) not be used within close proximity to streams or storm drainages and that application timing should be considered for environmental protection.

  8. Institute of Geophysics and Planetary Physics (IGPP), Lawrence Livermore National Laboratory (LLNL): Quinquennial report, November 14-15, 1996

    SciTech Connect (OSTI)

    Tweed, J.

    1996-10-01

    This Quinquennial Review Report of the Lawrence Livermore National Laboratory (LLNL) branch of the Institute for Geophysics and Planetary Physics (IGPP) provides an overview of IGPP-LLNL, its mission, and research highlights of current scientific activities. This report also presents an overview of the University Collaborative Research Program (UCRP), a summary of the UCRP Fiscal Year 1997 proposal process and the project selection list, a funding summary for 1993-1996, seminars presented, and scientific publications. 2 figs., 3 tabs.

  9. Sandia National Laboratories, Livermore Environmental Protection Implementation Plan for the period November 9, 1991--November 9, 1992

    SciTech Connect (OSTI)

    Not Available

    1991-10-01

    Sandia National Laboratories, as part of the DOE complex, is committed to full compliance with all applicable environmental laws and regulations. This Environmental Protection Implementation Plan (EPIP) is intended to ensure that the environmental program objectives of DOE Order 5400.1 are achieved at SNL, Livermore. The EPIP will serve as an aid to management and staff to implement these new programs in a timely manner. 23 refs., 4 figs., 1 tab.

  10. Serving the Nation for Fifty Years: 1952 - 2002 Lawrence Livermore National Laboratory [LLNL], Fifty Years of Accomplishments

    DOE R&D Accomplishments [OSTI]

    2002-01-01

    For 50 years, Lawrence Livermore National Laboratory has been making history and making a difference. The outstanding efforts by a dedicated work force have led to many remarkable accomplishments. Creative individuals and interdisciplinary teams at the Laboratory have sought breakthrough advances to strengthen national security and to help meet other enduring national needs. The Laboratory's rich history includes many interwoven stories -- from the first nuclear test failure to accomplishments meeting today's challenges. Many stories are tied to Livermore's national security mission, which has evolved to include ensuring the safety, security, and reliability of the nation's nuclear weapons without conducting nuclear tests and preventing the proliferation and use of weapons of mass destruction. Throughout its history and in its wide range of research activities, Livermore has achieved breakthroughs in applied and basic science, remarkable feats of engineering, and extraordinary advances in experimental and computational capabilities. From the many stories to tell, one has been selected for each year of the Laboratory's history. Together, these stories give a sense of the Laboratory -- its lasting focus on important missions, dedication to scientific and technical excellence, and drive to made the world more secure and a better place to live.

  11. Part B - Requirements & Funding Information PART B - Requirements...

    Office of Environmental Management (EM)

    IA, indicate whether Part A of the IA is attached or the location of Part A. For example, Part A could be located in the master file for IA number xxx at contracting office xxx. ...

  12. Part B - Requirements & Funding Information PART B - Requirements...

    Broader source: Energy.gov (indexed) [DOE]

    ... IA, indicate whether Part A of the IA is attached or the location of Part A. For example, Part A could be located in the master file for IA number xxx at contracting office xxx. ...

  13. How Do Standard Candles Illuminate Knowledge of the Universe...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Type Ia supernovae (SNe Ia) are among the brightest exploding stars in the universe. Observations using SNe Ia as "standard candles" led to the discovery of dark energy. Most ...

  14. Institute of Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, 1996 Annual Report

    SciTech Connect (OSTI)

    Ryerson, F. J., Institute of Geophysics and Planetary Physics

    1998-03-23

    The Institute of Geophysics and Planetary Physics (IGPP) is a Multicampus Research Unit of the University of California (UC). IGPP was founded in 1946 at UC Los Angeles with a charter to further research in the earth and planetary sciences and in related fields. The Institute now has branches at UC campuses in Los Angeles, San Diego, and Riverside, and at Los Alamos and Lawrence Livermore national laboratories. The University-wide IGPP has played an important role in establishing interdisciplinary research in the earth and planetary sciences. For example, IGPP was instrumental in founding the fields of physical oceanography and space physics, which at the time fell between the cracks of established university departments. Because of its multicampus orientation, IGPP has sponsored important interinstitutional consortia in the earth and planetary sciences. Each of the five branches has a somewhat different intellectual emphasis as a result of the interplay between strengths of campus departments and Laboratory programs. The IGPP branch at Lawrence Livermore National Laboratory (LLNL) was approved by the Regents of the University of California in 1982. IGPP-LLNL emphasizes research in seismology, geochemistry, cosmochemistry, and astrophysics. It provides a venue for studying the fundamental aspects of these fields, thereby complementing LLNL programs that pursue applications of these disciplines in national security and energy research. IGPP-LLNL is directed by Charles Alcock and was originally organized into three centers: Geosciences, stressing seismology; High-Pressure Physics, stressing experiments using the two-stage light-gas gun at LLNL; and Astrophysics, stressing theoretical and computational astrophysics. In 1994, the activities of the Center for High-Pressure Physics were merged with those of the Center for Geosciences. The Center for Geosciences, headed by Frederick Ryerson, focuses on research in geophysics and geochemistry. The Astrophysics Research

  15. DOE - Office of Legacy Management -- Iowa State University Ames Laboratory

    Office of Legacy Management (LM)

    - IA 01 State University Ames Laboratory - IA 01 FUSRAP Considered Sites Site: Iowa State University Ames Laboratory (IA.01 ) Eliminated from further consideration under FUSRAP Designated Name: Not Designated Alternate Name: None Location: Wallace Road , Ames , Iowa IA.01-1 IA.01-2 Evaluation Year: Circa 1985 IA.01-3 Site Operations: Produced uranium and thorium metal, recovered uranium scrap, and conducted studies and experimental investigations in connection with chemistry and metallurgy

  16. Lawrence Livermore National Laboratory Workshop Characterization of Pathogenicity, Virulence and Host-Pathogen Interactions

    SciTech Connect (OSTI)

    Krishnan, A

    2006-08-30

    The threats of bio-terrorism and newly emerging infectious diseases pose serious challenges to the national security infrastructure. Rapid detection and diagnosis of infectious disease in human populations, as well as characterizing pathogen biology, are critical for reducing the morbidity and mortality associated with such threats. One of the key challenges in managing an infectious disease outbreak, whether through natural causes or acts of overt terrorism, is detection early enough to initiate effective countermeasures. Much recent attention has been directed towards the utility of biomarkers or molecular signatures that result from the interaction of the pathogen with the host for improving our ability to diagnose and mitigate the impact of a developing infection during the time window when effective countermeasures can be instituted. Host responses may provide early signals in blood even from localized infections. Multiple innate and adaptive immune molecules, in combination with other biochemical markers, may provide disease-specific information and new targets for countermeasures. The presence of pathogen specific markers and an understanding of the molecular capabilities and adaptations of the pathogen when it interacts with its host may likewise assist in early detection and provide opportunities for targeting countermeasures. An important question that needs to be addressed is whether these molecular-based approaches will prove useful for early diagnosis, complement current methods of direct agent detection, and aid development and use of countermeasures. Lawrence Livermore National Laboratory (LLNL) will host a workshop to explore the utility of host- and pathogen-based molecular diagnostics, prioritize key research issues, and determine the critical steps needed to transition host-pathogen research to tools that can be applied towards a more effective national bio-defense strategy. The workshop will bring together leading researchers/scientists in the

  17. European Commission Impact Assessment Tools | Open Energy Information

    Open Energy Info (EERE)

    Publications, Softwaremodeling tools User Interface: Other Website: iatools.jrc.ec.europa.eubinviewIQToolWebHome.html IPTS-IA Tools Screenshot References: IPTS-IA Tools1...

  18. Pioneer Prairie II (09) Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Wind Energy Developer Horizon Wind Energy Energy Purchaser Ameren Location Northeastern IA IA Coordinates 43.450321, -92.551074 Show Map Loading map... "minzoom":false,"mappi...

  19. Pioneer Prairie I (4Q08) Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    In Service Owner Horizon Developer Horizon Energy Purchaser Na Location Northeastern IA IA Coordinates 43.450321, -92.551074 Show Map Loading map... "minzoom":false,"mappi...

  20. June 2012 Electrical Safety Occurrences

    Broader source: Energy.gov (indexed) [DOE]

    to date have included the reduction of the number of active Issuing Authorities (IA), providing updated IA training, and requiring a Senior Review Board review and approval...

  1. Organization | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Organization Organization The organizational structure of the Office of International Affairs (IA) is as follows: Office of Resource Management (IA-10) Office of the Deputy ...

  2. Exploration of tetrahedral structures in silicate cathodes using...

    Office of Scientific and Technical Information (OSTI)

    Author Affiliations Iowa State Univ., Ames, IA (United States) Xiamen Univ., Xiamen (China) Univ. of Science and Technology of China, Hefei (China) Ames Lab., Ames, IA (United...

  3. "Title","Creator/Author","Publication Date","OSTI Identifier...

    Office of Scientific and Technical Information (OSTI)

    PHYSICS; ACCURACY; COLOR; COSMOLOGICAL CONSTANT; LUMINOSITY; PHOTOMETRY; SHAPE; SUPERNOVAE Astrophysics,ASTRO",,"We combine the CfA3 supernovae Type Ia (SN Ia) sample with...

  4. TITLE AUTHORS SUBJECT SUBJECT RELATED DESCRIPTION PUBLISHER AVAILABILI...

    Office of Scientific and Technical Information (OSTI)

    Univ of Oklahoma Univ of Oklahoma ASTRONOMY AND ASTROPHYSICS Dark Energy Type Ia supernovae radiative transfer Dark Energy Type Ia supernovae radiative transfer The progress...

  5. L AW R E N C E N A T I O N A L LABORATORY LIVERMORE

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AW R E N C E N A T I O N A L LABORATORY LIVERMORE Atoms for Peace After 50 Years R.N. Schock, E.S. Vergino, N. Joeck, and R.F. Lehman Issues in Science and Technology Spring 2004 Spring 2004 UCRL-JRNL-203590 This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility

  6. EIS-0348 and EIS-0236-S3: Continued Operation of Lawrence Livermore National Laboratory and Supplement Stockpile Stewardship and Management

    Office of Energy Efficiency and Renewable Energy (EERE)

    This EIS analyzes DOE's decision to continue operation of Lawrence Livermore National Laboratory (LLNL), which is critical to the National Nuclear Security Administration’s Stockpile Stewardship Program and to preventing the spread and use of nuclear weapons worldwide. This document is also Supplement 3 to the Final Programmatic Environmental Impact Statement for Stockpile Stewardship and Management (EIS-0236) for use of proposed materials at the National Ignition Facility (NIF). This combination ensures timely analysis of the reasonably foreseeable environmental impact of NIF experiments using the proposed materials concurrent with the environmental analyses being conducted for the site-wide activities.

  7. Characteristics of workload on ASCI blue-pacific at lawrence livermore national laboratory

    SciTech Connect (OSTI)

    Yoo, A B; Jette, M A

    2000-08-14

    Symmetric multiprocessor (SMP) clusters have become the prevalent computing platforms for large-scale scientific computation in recent years mainly due to their good scalability. In fact, many parallel machines being used at supercomputing centers and national laboratories are of this type. It is critical and often very difficult on such large-scale parallel computers to efficiently manage a stream of jobs, whose requirement for resources and computing time greatly varies. Understanding the characteristics of workload imposed on a target environment plays a crucial role in managing system resources and developing an efficient resource management scheme. A parallel workload is analyzed typically by studying the traces from actual production parallel machines. The study of the workload traces not only provides the system designers with insight on how to design good processor allocation and job scheduling policies for efficient resource management, but also helps system administrators monitor and fine-tune the resource management strategies and algorithms. Furthermore, the workload traces are a valuable resource for those who conduct performance studies through either simulation or analytical modeling. The workload traces can be directly fed to a trace-driven simulator in a more realistic and specific simulation experiments. Alternatively, one can obtain certain parameters that characterize the workload by analyzing the traces, and then use them to construct a workload model or to drive a simulation in which a large number of runs are required. Considering these benefits, they collected and analyzed the job traces from ASCI Blue-Pacific, a 336-node IBM SP2 machine at Lawrence Livermore National Laboratory (LLNL). The job traces used span a period of about six months, from October 1999 till the first week of May 2000. The IBM SP2 machine at the LLNL uses gang scheduling LoadLever (GangLL) to manage parallel jobs. User jobs are submitted to the GangLL via a locally

  8. Post-rehabilitation flow monitoring and analysis of the sanitary sewer system at Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Brandstetter, E.R.; Littlefield, D.C.; Villegas, M.

    1996-03-01

    Lawrence Livermore National Laboratory (LLNL) is operated by the University of California under contract with the U.S. Department of Energy (DOE). The Livermore site, approximately 50 miles southeast of San Francisco, occupies 819 acres. So far, there have been three phases in an assessment and rehabilitation of the LLNL sanitary sewer system. A 1989 study that used data collected from December 1, 1988, to January 6, 1989, to determine the adequacy of the LLNL sewer system to accommodate present and future peak flows. A Sanitary Sewer Rehabilitation (SSR) project, from October of 1991 to March of 1996, in which the system was assessed and rehabilitated. The third study is the post-rehabilitation assessment study that is reported in this document. In this report, the sanitary sewer system is described, and the goals and results of the 1989 study and the SSR project are summarized. The goals of the post-rehabilitation study are given and the analytical procedures and simulation model are described. Results, conclusions, and recommendations for further work or study are given. Field operations are summarized in Appendix A. References are provided in Appendix B.

  9. II V It.. "/.::::JIJtCl.4 National Nuclear Security Admfnistratlon

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    /IA * . W r"A ~l II V It.. "/.::::JIJtCl.4 National Nuclear Security Admfnistratlon U. S. Department of Energy National Nuclear Security Administration Livermore Site Office PO Box 808, L-293 7000 East Avenue Livermore, Califor~.i.a 94551-0808 JAN 14 2014 3250 COR-M0-1/14/2014-556065 MEMORANDUM FOR KAREN.L. BOARDMAN CHAIR FEDERAL TECHNICAL CAP#I/B TY PANEL FROM: '~KIMBERLY DA VIS LEBAK -" - . ?~ //;' l~* Jl MANAGER f"t~L( .' SUBJECT: REFRENCE: Annual Workforce Analysis and

  10. Livermore Lab's giant laser system will bring star power to Earth

    SciTech Connect (OSTI)

    Moses, E

    2010-04-08

    In the 50 years since the laser was first demonstrated in Malibu, California, on May 16, 1960, Lawrence Livermore National Laboratory (LLNL) has been a world leader in laser technology and the home for many of the world's most advanced laser systems. That tradition continues today at LLNL's National Ignition Facility (NIF), the world's most energetic laser system. NIF's completion in March 2009 not only marked the dawn of a new era of scientific research - it could also prove to be the next big step in the quest for a sustainable, carbon-free energy source for the world. NIF consists of 192 laser beams that will focus up to 1.8 million joules of energy on a bb-sized target filled with isotopes of hydrogen - forcing the hydrogen nuclei to collide and fuse in a controlled thermonuclear reaction similar to what happens in the sun and the stars. More energy will be produced by this 'ignition' reaction than the amount of laser energy required to start it. This is the long-sought goal of 'energy gain' that has eluded fusion researchers for more than half a century. Success will be a scientific breakthrough - the first demonstration of fusion ignition in a laboratory setting, duplicating on Earth the processes that power the stars. This impending success could not be achieved without the valuable partnerships forged with other national and international laboratories, private industry and universities. One of the most crucial has been between LLNL and the community in which it resides. Over 155 businesses in the local Tri-Valley area have contributed to the NIF, from industrial technology and engineering firms to tool manufacturing, electrical, storage and supply companies. More than $2.3B has been spent locally between contracts with nearby merchants and employee salaries. The Tri-Valley community has enabled the Laboratory to complete a complex and far-reaching project that will have national and global impact in the future. The first experiments were conducted on NIF

  11. Lawrence Livermore National Laboratory Emergency Response Capability Baseline Needs Assessment Requirement Document

    SciTech Connect (OSTI)

    Sharry, J A

    2009-12-30

    not be the level of performance desired Lawrence Livermore National Laboratory or Sandia/CA. Performance at levels greater than those established by this document will provide a higher level of fire safety, fire protection, or loss control and is encouraged. In Section 7, Determination of Baseline Needs, a standard template was used to describe the process used that involves separating basic emergency response needs into nine separate services. Each service being evaluated contains a determination of minimum requirements, an analysis of the requirements, a statement of minimum performance, and finally a summary of the minimum performance. The requirement documents, listed in Section 5, are those laws, regulations, DOE Directives, contractual obligations, or LLNL policies that establish service levels. The determination of minimum requirements section explains the rationale or method used to determine the minimum requirements.

  12. Hazardous Waste Management - University of California style, part II: Lawrence Livermore National Laboratory's joint venture TSDF Audit Program

    SciTech Connect (OSTI)

    Pearson, H E

    1998-07-22

    Lawrence Livermore National Laboratory's (LLNL's) management assigned the responsibility of conducting TSDF audits to the Waste Certification Office in August of 1994. Prior to this date, there was no mandate for LLNL to audit waste facilities, nor was there a structured program in place for conducting the audits Program development took approximately 10 months. This included writing a TSDF Audit Procedure, writing a Quality Assurance (QA) Plan, developing the required audit check lists, and using the documentation on a trial basis. A typical TSDF audit lasted one full day using three hazardous waste specialists The QA Plan is based on the quality assurance and management system requirements of DOE Order 5700.6C (Quality Assurance) and ASME NQA-1 (Quality Assurance Program Requirements for Nuclear Facilities).

  13. Highly Insulating Residential Windows Using Smart Automated Shading

    Broader source: Energy.gov [DOE]

    Lead Performer: Lawrence Berkeley National Laboratory - Berkeley, CA Partner: Pella Windows - Pella, IA

  14. Evaluation of Cavity Collapse and Surface Crater Formation for Selected Lawrence Livermore National Laboratory Underground Nuclear Tests - 2011, Part 2

    SciTech Connect (OSTI)

    Pawloski, G A

    2012-01-30

    This report evaluates collapse evolution for selected Lawrence Livermore National Laboratory (LLNL) underground nuclear tests at the Nevada National Security Site (NNSS, formerly called the Nevada Test Site). The work is being done to support several different programs that desire access to the ground surface above expended underground nuclear tests. The programs include: the Borehole Management Program, the Environmental Restoration Program, and the National Center for Nuclear Security Gas-Migration Experiment. Safety decisions must be made before a crater area, or potential crater area, can be reentered for any work. Evaluation of cavity collapse and crater formation is input into the safety decisions. Subject matter experts from the LLNL Containment Program who participated in weapons testing activities perform these evaluations. Information used included drilling and hole construction, emplacement and stemming, timing and sequence of the selected test and nearby tests, geology, yield, depth of burial, collapse times, surface crater sizes, cavity and crater volume estimations, ground motion, and radiological release information. Both classified and unclassified data were reviewed. The evaluations do not include the effects of erosion that may modify the collapse craters over time. They also do not address possible radiation dangers that may be present. Various amounts of information are available for these tests, depending on their age and other associated activities. Lack of data can hamper evaluations and introduce uncertainty. We make no attempt to quantify this uncertainty. Evaluation of Cavity Collapse and Surface Crater Formation for Selected Lawrence Livermore National Laboratory Underground Nuclear Tests - 2011 was published on March 2, 2011. This report, considered Part 2 of work undertaken in calendar year 2011, compiles evaluations requested after the March report. The following unclassified summary statements describe collapse evolution and crater

  15. Lawrence Livermore National Laboratory- Completing the Human Genome Project and Triggering Nearly $1 Trillion in U.S. Economic Activity

    SciTech Connect (OSTI)

    Stewart, Jeffrey S.

    2015-07-28

    The success of the Human Genome project is already nearing $1 Trillion dollars of U.S. economic activity. Lawrence Livermore National Laboratory (LLNL) was a co-leader in one of the biggest biological research effort in history, sequencing the Human Genome Project. This ambitious research effort set out to sequence the approximately 3 billion nucleotides in the human genome, an effort many thought was nearly impossible. Deoxyribonucleic acid (DNA) was discovered in 1869, and by 1943 came the discovery that DNA was a molecule that encodes the genetic instructions used in the development and functioning of living organisms and many viruses. To make full use of the information, scientists needed to first sequence the billions of nucleotides to begin linking them to genetic traits and illnesses, and eventually more effective treatments. New medical discoveries and improved agriculture productivity were some of the expected benefits. While the potential benefits were vast, the timeline (over a decade) and cost ($3.8 Billion) exceeded what the private sector would normally attempt, especially when this would only be the first phase toward the path to new discoveries and market opportunities. The Department of Energy believed its best research laboratories could meet this Grand Challenge and soon convinced the National Institute of Health to formally propose the Human Genome project to the federal government. The U.S. government accepted the risk and challenge to potentially create new healthcare and food discoveries that could benefit the world and the U.S. Industry.

  16. Lawrence Livermore National Laboratory Quality Assurance Project Plan for National Emission Standards for Hazardous Air Pollutants (NESHAPs), Subpart H

    SciTech Connect (OSTI)

    Hall, L.; Biermann, A

    2000-06-27

    As a Department of Energy (DOE) Facility whose operations involve the use of radionuclides, Lawrence Livermore National Laboratory (LLNL) is subject to the requirements of 40 CFR 61, the National Emission Standards for Hazardous Air Pollutants (NESHAPs). Subpart H of this Regulation establishes standards for exposure of the public to radionuclides (other than radon) released from DOE Facilities (Federal Register, 1989). These regulations limit the emission of radionuclides to ambient air from DOE facilities (see Section 2.0). Under the NESHAPs Subpart H Regulation (hereafter referred to as NESHAPs), DOE facilities are also required to establish a quality assurance program for radionuclide emission measurements; specific requirements for preparation of a Quality Assurance Program Plan (QAPP) are given in Appendix B, Method 114 of 40 CFR 61. Throughout this QAPP, the specific Quality Assurance Method elements of 40 CFR 61 Subpart H addressed by a given section are identified. In addition, the US Environmental Protection Agency (US EPA) (US EPA, 1994a) published draft requirements for QAPP's prepared in support of programs that develop environmental data. We have incorporated many of the technical elements specified in that document into this QAPP, specifically those identified as relating to measurement and data acquisition; assessment and oversight; and data validation and usability. This QAPP will be evaluated on an annual basis, and updated as appropriate.

  17. Lawrence Livermore National Laboratory interests and capabilities for research on the ecological effects of global climatic and atmospheric change

    SciTech Connect (OSTI)

    Amthor, J.S.; Houpis, J.L.; Kercher, J.R.; Ledebuhr, A.; Miller, N.L.; Penner, J.E.; Robison, W.L.; Taylor, K.E.

    1994-09-01

    The Lawrence Livermore National Laboratory (LLNL) has interests and capabilities in all three types of research that must be conducted in order to understand and predict effects of global atmospheric and climatic (i.e., environmental) changes on ecological systems and their functions (ecosystem function is perhaps most conveniently defined as mass and energy exchange and storage). These three types of research are: (1) manipulative experiments with plants and ecosystems; (2) monitoring of present ecosystem, landscape, and global exchanges and pools of energy, elements, and compounds that play important roles in ecosystem function or the physical climate system, and (3) mechanistic (i.e., hierarchic and explanatory) modeling of plant and ecosystem responses to global environmental change. Specific experimental programs, monitoring plans, and modeling activities related to evaluation of ecological effects of global environmental change that are of interest to, and that can be carried out by LLNL scientists are outlined. Several projects have the distinction of integrating modeling with empirical studies resulting in an Integrated Product (a model or set of models) that DOE or any federal policy maker could use to assess ecological effects. The authors note that any scheme for evaluating ecological effects of atmospheric and climatic change should take into account exceptional or sensitive species, in particular, rare, threatened, or endangered species.

  18. The LLNL (Lawrence Livermore National Laboratory) ICF (Inertial Confinement Fusion) Program: Progress toward ignition in the Laboratory

    SciTech Connect (OSTI)

    Storm, E.; Batha, S.H.; Bernat, T.P.; Bibeau, C.; Cable, M.D.; Caird, J.A.; Campbell, E.M.; Campbell, J.H.; Coleman, L.W.; Cook, R.C.; Correll, D.L.; Darrow, C.B.; Davis, J.I.; Drake, R.P.; Ehrlich, R.B.; Ellis, R.J.; Glendinning, S.G.; Haan, S.W.; Haendler, B.L.; Hatcher, C.W.; Hatchett, S.P.; Hermes, G.L.; Hunt, J.P.; Kania, D.R.; Kauffman, R.L.; Kilkenny, J.D.; Kornblum, H.N.; Kruer, W.L.; Kyrazis, D.T.; Lane, S.M.; Laumann

    1990-10-02

    The Inertial Confinement Fusion (ICF) Program at the Lawrence Livermore National Laboratory (LLNL) has made substantial progress in target physics, target diagnostics, and laser science and technology. In each area, progress required the development of experimental techniques and computational modeling. The objectives of the target physics experiments in the Nova laser facility are to address and understand critical physics issues that determine the conditions required to achieve ignition and gain in an ICF capsule. The LLNL experimental program primarily addresses indirect-drive implosions, in which the capsule is driven by x rays produced by the interaction of the laser light with a high-Z plasma. Experiments address both the physics of generating the radiation environment in a laser-driven hohlraum and the physics associated with imploding ICF capsules to ignition and high-gain conditions in the absence of alpha deposition. Recent experiments and modeling have established much of the physics necessary to validate the basic concept of ignition and ICF target gain in the laboratory. The rapid progress made in the past several years, and in particular, recent results showing higher radiation drive temperatures and implosion velocities than previously obtained and assumed for high-gain target designs, has led LLNL to propose an upgrade of the Nova laser to 1.5 to 2 MJ (at 0.35 {mu}m) to demonstrate ignition and energy gains of 10 to 20 -- the Nova Upgrade.

  19. Preliminary report of the past and present uses, storage, and disposal of hazardous materials at the Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Dreicer, M.

    1985-12-01

    This report contains the findings of a records search performed to survey the past and present use, storage, and disposal of hazardous materials and wastes at the Lawrence Livermore National Laboratory (LLNL) site. This report provides a point of departure for further planning of environmental protection activities at the site. This report was conducted using the LLNL archives and library, documents from the US Navy, old LLNL Plant Engineering blueprint files, published articles and reports, Environmental Protection Program records, employee interviews, and available aerial photographs. Sections I and II of this report provide an introduction to the LLNL site and its environmental characteristics. Several tenants have occupied the site prior to the establishment of LLNL, currently operated by the University of California for the US Department of Energy. Section III of this report contains information on environmentally related operations of early site users, the US Navy and California Research and Development. Section IV of this report contains information on the handling of hazardous materials and wastes by LLNL programs. The information is presented in 12 sub-sections, one for each currently operating LLNL program. General site areas, i.e., garbage trenches, the traffic circle landfill, the taxi strip, and old ammunition bunkers are discussed in Section V. 12 refs., 23 figs., 27 tabs.

  20. Discovering the Nature of Dark Energy: Towards Better Distances from Type

    Office of Scientific and Technical Information (OSTI)

    Ia Supernovae -- Final Technical Report (Technical Report) | SciTech Connect Discovering the Nature of Dark Energy: Towards Better Distances from Type Ia Supernovae -- Final Technical Report Citation Details In-Document Search Title: Discovering the Nature of Dark Energy: Towards Better Distances from Type Ia Supernovae -- Final Technical Report Type Ia supernovae (SNe Ia; exploding white-dwarf stars) were the key to the Nobel-worthy 1998 discovery and subsequent verification that the

  1. STRIPES TEMPLATE

    Office of Environmental Management (EM)

    STRIPES TEMPLATE IA Part A - Page 1 of 5 Interagency Agreement (IA) Part A - General Terms and Conditions Prescription: Part A: When DOE is the Requesting Agency for an Interagency Agreement (IA), the DOE Contracting Officer will complete IA Part A, General Terms and Conditions. It will be necessary for the Contracting Officer to coordinate with the program office and the Servicing Agency for completion of IA Part A. Part B: When the Program Office prepares and submits the requisition, the

  2. Sandia`s network for Supercomputing `94: Linking the Los Alamos, Lawrence Livermore, and Sandia National Laboratories using switched multimegabit data service

    SciTech Connect (OSTI)

    Vahle, M.O.; Gossage, S.A.; Brenkosh, J.P.

    1995-01-01

    Supercomputing `94, a high-performance computing and communications conference, was held November 14th through 18th, 1994 in Washington DC. For the past four years, Sandia National Laboratories has used this conference to showcase and focus its communications and networking endeavors. At the 1994 conference, Sandia built a Switched Multimegabit Data Service (SMDS) network running at 44.736 megabits per second linking its private SMDS network between its facilities in Albuquerque, New Mexico and Livermore, California to the convention center in Washington, D.C. For the show, the network was also extended from Sandia, New Mexico to Los Alamos National Laboratory and from Sandia, California to Lawrence Livermore National Laboratory. This paper documents and describes this network and how it was used at the conference.

  3. Characterization of the Neutron Fields in the Lawrence Livermore National Laboratory (LLNL) Radiation Calibration Laboratory Low Scatter Calibration Facility

    SciTech Connect (OSTI)

    Radev, R

    2009-09-04

    In June 2007, the Department of Energy (DOE) revised its rule on Occupational Radiation Protection, Part 10 CFR 835. A significant aspect of the revision was the adoption of the recommendations outlined in International Commission on Radiological Protection (ICRP) Report 60 (ICRP-60), including new radiation weighting factors for neutrons, updated internal dosimetric models, and dose terms consistent with the newer ICRP recommendations. ICRP-60 uses the quantities defined by the International Commission on Radiation Units and Measurements (ICRU) for personnel and area monitoring including the ambient dose equivalent H*(d). A Joint Task Group of ICRU and ICRP has developed various fluence-to-dose conversion coefficients which are published in ICRP-74 for both protection and operational quantities. In February 2008, Lawrence Livermore National Laboratory (LLNL) replaced its old pneumatic transport neutron irradiation system in the Radiation Calibration Laboratory (RCL) Low Scatter Calibration Facility (B255, Room 183A) with a Hopewell Designs irradiator model N40. The exposure tube for the Hopewell system is located close to, but not in exactly the same position as the exposure tube for the pneumatic system. Additionally, the sources for the Hopewell system are stored in Room 183A where, prior to the change, they were stored in a separate room (Room 183C). The new source configuration and revision of the 10 CFR 835 radiation weighting factors necessitate a re-evaluation of the neutron dose rates in B255 Room 183A. This report deals only with the changes in the operational quantities ambient dose equivalent and ambient dose rate equivalent for neutrons as a result of the implementation of the revised 10 CFR 835. In the report, the terms 'neutron dose' and 'neutron dose rate' will be used for convenience for ambient neutron dose equivalent and ambient neutron dose rate equivalent unless otherwise stated.

  4. An Approach to Industrial Stormwater Benchmarks: Establishing and Using Site-Specific Threshold Criteria at Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Campbell, C G; Mathews, S

    2006-09-07

    Current regulatory schemes use generic or industrial sector specific benchmarks to evaluate the quality of industrial stormwater discharges. While benchmarks can be a useful tool for facility stormwater managers in evaluating the quality stormwater runoff, benchmarks typically do not take into account site-specific conditions, such as: soil chemistry, atmospheric deposition, seasonal changes in water source, and upstream land use. Failing to account for these factors may lead to unnecessary costs to trace a source of natural variation, or potentially missing a significant local water quality problem. Site-specific water quality thresholds, established upon the statistical evaluation of historic data take into account these factors, are a better tool for the direct evaluation of runoff quality, and a more cost-effective trigger to investigate anomalous results. Lawrence Livermore National Laboratory (LLNL), a federal facility, established stormwater monitoring programs to comply with the requirements of the industrial stormwater permit and Department of Energy orders, which require the evaluation of the impact of effluent discharges on the environment. LLNL recognized the need to create a tool to evaluate and manage stormwater quality that would allow analysts to identify trends in stormwater quality and recognize anomalous results so that trace-back and corrective actions could be initiated. LLNL created the site-specific water quality threshold tool to better understand the nature of the stormwater influent and effluent, to establish a technical basis for determining when facility operations might be impacting the quality of stormwater discharges, and to provide ''action levels'' to initiate follow-up to analytical results. The threshold criteria were based on a statistical analysis of the historic stormwater monitoring data and a review of relevant water quality objectives.

  5. Evaluation of Cavity Collapse and Surface Crater Formation for Selected Lawrence Livermore National Laboratory Underground Nuclear Tests - 2006

    SciTech Connect (OSTI)

    Pawloski, G A; Raschke, K

    2006-03-16

    This report describes evaluation of collapse evolution for selected LLNL underground nuclear tests at the Nevada Test Site (NTS). The work is being done at the request of Bechtel Nevada and supports the Department of Energy National Nuclear Security Association Nevada Site Office Borehole Management Program (BMP). The primary objective of this program is to close (plug) weapons program legacy boreholes that are deemed no longer useful. Safety decisions must be made before a crater area, or potential crater area, can be reentered for any work. Our statements on cavity collapse and crater formation are input into their safety decisions. The BMP is an on-going program to address hundreds of boreholes at the NTS. Each year Bechtel Nevada establishes a list of holes to be addressed. They request the assistance of the Lawrence Livermore National Laboratory and Los Alamos National Laboratory Containment Programs to provide information related to the evolution of collapse history and make statements on completeness of collapse as relates to surface crater stability. These statements do not include the effects of erosion that may modify the collapse craters over time. They also do not address possible radiation dangers that may be present. Subject matter experts from the LLNL Containment Program and the Chemistry Biology and Nuclear Sciences Division who had been active in weapons testing activities performed these evaluations. Information used included drilling and hole construction, emplacement and stemming, timing and sequence of the selected test and nearby tests, geology, yield, depth of burial, collapse times, surface crater sizes, cavity and crater volume estimations, and ground motion. Both classified and unclassified data were reviewed. Various amounts of information are available for these tests, depending on their age and other associated activities. Lack of data can hamper evaluations and introduce uncertainty. We make no attempt to quantify this uncertainty.

  6. Evaluation of Cavity Collapse and Surface Crater Formation for Selected Lawrence Livermore National Laboratory Underground Nuclear Tests - 2007

    SciTech Connect (OSTI)

    Roberts, S K; Pawloski, G A; Raschke, K

    2007-04-26

    This report describes evaluation of collapse evolution for selected LLNL underground nuclear tests at the Nevada Test Site (NTS). The work is being done at the request of NSTec and supports the Department of Energy National Nuclear Security Association Nevada Site Office Borehole Management Program (BMP). The primary objective of this program is to close (plug) weapons program legacy boreholes that are deemed no longer useful. Safety decisions must be made before a crater area, or potential crater area, can be reentered for any work. Our statements on cavity collapse and crater formation are input into their safety decisions. The BMP is an on-going program to address hundreds of boreholes at the NTS. Each year NSTec establishes a list of holes to be addressed. They request the assistance of the Lawrence Livermore National Laboratory and Los Alamos National Laboratory Containment Programs to provide information related to the evolution of collapse history and make statements on completeness of collapse as relates to surface crater stability. These statements do not include the effects of erosion that may modify the collapse craters over time. They also do not address possible radiation dangers that may be present. Subject matter experts from the LLNL Containment Program and the Chemical Sciences Division who had been active in weapons testing activities performed these evaluations. Information used included drilling and hole construction, emplacement and stemming, timing and sequence of the selected test and nearby tests, geology, yield, depth of burial, collapse times, surface crater sizes, cavity and crater volume estimations, and ground motion. Both classified and unclassified data were reviewed. Various amounts of information are available for these tests, depending on their age and other associated activities. Lack of data can hamper evaluations and introduce uncertainty. We make no attempt to quantify this uncertainty. The following unclassified summary

  7. Enterprise Assessments Operational Awareness Record for the Assessment of the Lawrence Livermore National Laboratory Transuranic Waste Inventory Tracking System, March 14-18, 2016 (OAR EA-LLNL-2016-03-14)

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    LLNL-2016-03-14 Site: Lawrence Livermore National Laboratory Subject: Transuranic Waste Inventory Tracking System Dates of Activity: March 14-18, 2016 Report Preparer: Ron Bostic Activity Description/Purpose: The U.S. Department of Energy (DOE) Office of Enterprise Assessments (EA) conducted an operational awareness visit to the Lawrence Livermore National Laboratory (LLNL) on March 14-18, 2016, to evaluate the effectiveness of the transuranic (TRU) waste management and inventory tracking

  8. Livermore Interns Showcase Wares

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Live: DOE Cyber Distinguished Speaker Series Live: DOE Cyber Distinguished Speaker Series Live streaming video by Ustream FEATURED SPEAKER: DR. WINFRIED K. HENSINGER Professor of Quantum Technologies, Ion Quantum Technology Group, Department of Physics and Astronomy, University of Sussex Join us on Friday, August 5 starting at 11 a.m. ET for the DOE Cyber Distinguished Speaker Series featuring a panel of leading cyber researchers and practitioners from some of the region's finest universities.

  9. Lawrence Livermore National Laboratory

    National Nuclear Security Administration (NNSA)

    to bringing the facility on-line smoothly so it will provide the DOE with cost-effective solar power for years to come."

    "We are excited to move to the next phase and bring...

  10. Lawrence Livermore National Laboratory

    National Nuclear Security Administration (NNSA)

    en Sandia California works on nuclear weapon W80-4 Life Extension Program http:www.nnsa.energy.govblogsandia-california-works-nuclear-weapon-w80-4-life-extension-program...

  11. Lawrence Livermore National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Partnerships Supplier Resources News Media Contacts Media Library Publications Lab Report Social Media About Organization Management and Sponsors History Visiting Directions...

  12. Livermore Interpolation Package

    SciTech Connect (OSTI)

    Fritsch, F. N.

    2011-12-01

    LIP is a library of openly published mathematical algorithms used to assist in 1D and 2D interpolation of discrete tabular data. Example usage includes Equation of State analysis, boundary condition inputs for applications, mesh generation, image manipulation, and host of other applications where discrete data needs to be sampled as a continuous function. The distribution contains a facility for building and testing a library, liblip.a, from which applications may access the various functions that make up LIP.

  13. Livermore Interpolation Package

    Energy Science and Technology Software Center (OSTI)

    2011-12-01

    LIP is a library of openly published mathematical algorithms used to assist in 1D and 2D interpolation of discrete tabular data. Example usage includes Equation of State analysis, boundary condition inputs for applications, mesh generation, image manipulation, and host of other applications where discrete data needs to be sampled as a continuous function. The distribution contains a facility for building and testing a library, liblip.a, from which applications may access the various functions that makemore » up LIP.« less

  14. Livermore Metagenomics Analysis Toolkit

    Energy Science and Technology Software Center (OSTI)

    2012-10-01

    LMAT is designed to take as input a collection of raw metagenomic sequencer reads, and search each read against a reference genome database and assign a taxonomic label and confidence value to each read and report a summary of the predicted taxonomic contents of the metagenomic sample.

  15. Human Health and Ecological Risk Assessment for the Operation of the Explosives Waste Treatment Facility at Site 300 of the Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Gallegos, G; Daniels, J; Wegrecki, A

    2007-10-01

    This document contains the human health and ecological risk assessment for the Resource Recovery and Conservation Act (RCRA) permit renewal for the Explosives Waste Treatment Facility (EWTF). Volume 1 is the text of the risk assessment, and Volume 2 (provided on a compact disc) is the supporting modeling data. The EWTF is operated by the Lawrence Livermore National Laboratory (LLNL) at Site 300, which is located in the foothills between the cities of Livermore and Tracy, approximately 17 miles east of Livermore and 8 miles southwest of Tracy. Figure 1 is a map of the San Francisco Bay Area, showing the location of Site 300 and other points of reference. One of the principal activities of Site 300 is to test what are known as 'high explosives' for nuclear weapons. These are the highly energetic materials that provide the force to drive fissionable material to criticality. LLNL scientists develop and test the explosives and the integrated non-nuclear components in support of the United States nuclear stockpile stewardship program as well as in support of conventional weapons and the aircraft, mining, oil exploration, and construction industries. Many Site 300 facilities are used in support of high explosives research. Some facilities are used in the chemical formulation of explosives; others are locations where explosive charges are mechanically pressed; others are locations where the materials are inspected radiographically for such defects as cracks and voids. Finally, some facilities are locations where the machined charges are assembled before they are sent to the onsite test firing facilities, and additional facilities are locations where materials are stored. Wastes generated from high-explosives research are treated by open burning (OB) and open detonation (OD). OB and OD treatments are necessary because they are the safest methods for treating explosives wastes generated at these facilities, and they eliminate the requirement for further handling and

  16. TECHNICAL EVALUATION OF SOIL REMEDIATION ALTERNATIVES AT THE BUILDING 812 OPERABLE UNIT, LAWRENCE LIVERMORE NATIONAL LABORATORY SITE 300

    SciTech Connect (OSTI)

    Eddy-Dilek, C.; Miles, D.; Abitz, R.

    2009-08-14

    The Department of Energy Livermore Site Office requested a technical review of remedial alternatives proposed for the Building 812 Operable Unit, Site 300 at the Lawrence Livermore National Laboratory. The team visited the site and reviewed the alternatives proposed for soil remediation in the draft RI/FS and made the following observations and recommendations. Based on the current information available for the site, the team did not identify a single technology that would be cost effective and/or ecologically sound to remediate DU contamination at Building 812 to current remedial goals. Soil washing is not a viable alternative and should not be considered at the site unless final remediation levels can be negotiated to significantly higher levels. This recommendation is based on the results of soil washing treatability studies at Fernald and Ashtabula that suggest that the technology would only be effective to address final remediation levels higher than 50 pCi/g. The technical review team identified four areas of technical uncertainty that should be resolved before the final selection of a preferred remedial strategy is made. Areas of significant technical uncertainty that should be addressed include: (1) Better delineation of the spatial distribution of surface contamination and the vertical distribution of subsurface contamination in the area of the firing table and associated alluvial deposits; (2) Chemical and physical characterization of residual depleted uranium (DU) at the site; (3) Determination of actual contaminant concentrations in air particulates to support risk modeling; and (4) More realistic estimation of cost for remedial alternatives, including soil washing, that were derived primarily from vendor estimates. Instead of conducting the planned soil washing treatability study, the team recommends that the site consider a new phased approach that combines additional characterization approaches and technologies to address the technical uncertainty in

  17. Lawrence Livermore National Laboratories Perspective on Code Development and High Performance Computing Resources in Support of the National HED/ICF Effort

    SciTech Connect (OSTI)

    Clouse, C. J.; Edwards, M. J.; McCoy, M. G.; Marinak, M. M.; Verdon, C. P.

    2015-07-07

    Through its Advanced Scientific Computing (ASC) and Inertial Confinement Fusion (ICF) code development efforts, Lawrence Livermore National Laboratory (LLNL) provides a world leading numerical simulation capability for the National HED/ICF program in support of the Stockpile Stewardship Program (SSP). In addition the ASC effort provides high performance computing platform capabilities upon which these codes are run. LLNL remains committed to, and will work with, the national HED/ICF program community to help insure numerical simulation needs are met and to make those capabilities available, consistent with programmatic priorities and available resources.

  18. Analysis of natural gases, AL, AR, FL, GA, IL, IN, IA, KY, LA, MD, MI, MS, MO, NJ, NY, NC, OH, PA, TN, VA, and WV; 1951-1991 (for microcomputers). Data file

    SciTech Connect (OSTI)

    Not Available

    1991-01-01

    The U.S. Bureau of Mines diskette contains analysis and related source data for 2,357 natural gas samples collected from miscellaneous states, which include the following states: Alabama, Arkansas (except Arkoma Basin), Florida, Georgia, Illinois, Indiana, Iowa, Kentucky, Louisiana, Maryland, Michigan, Mississippi, Missouri, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, and West Virginia. All samples were obtained and analyzed as part of the Bureau's investigations of occurrences of helium in natural gases of countries with free market economies. The survey has been conducted since 1917. The analysis contained on the diskette contain the full range of component analysis data. Five files are on the diskette: READ.ME, MISC.TXT, MISC.DBF, USHEANAL.DBF, and BASINCDE.TXT.

  19. Environmental assessment for the demonstration of uranium-atomic vapor laser isotope separation (U-AVLIS) at Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Not Available

    1991-05-01

    The U.S. Department of Energy (DOE), Office of Nuclear Energy, proposes to use full-scale lasers and separators to demonstrate uranium enrichment as part of the national Uranium-Atomic Vapor Laser Isotope Separation (U-AVLIS) Program. Demonstration of uranium enrichment is planned to be conducted in Building 490 of the Lawrence Livermore National Laboratory (LLNL), near Livermore, California in 1991 and 1992. The collective goal of the U-AVLIS Program is to develop and demonstrate an integrated technology for low-cost enrichment of uranium for nuclear reactor fuel. Alternatives to the proposed LLNL demonstration activity are no action, use of alternative LLNL facilities, and use of an alternative DOE site. This EA describes the existing LLNL environment and surroundings that could be impacted by the proposed action. Potential impacts to on- site and off-site environments predicted during conduct of the Uranium Demonstration System (UDS) at LLNL and alternative actions are reported in this EA. The analysis covers routine activities and potential accidents. 81 refs., 8 figs., 6 tabs.

  20. Safety Basis Requirements for Nonnuclear Facilities at Lawrence Livermore National Laboratory Site-Specific Work Smart Standard Revision 3 December 2006

    SciTech Connect (OSTI)

    Beach, D; Brereton, S; Failor, R; Hildum, J; Ingram, C; Spagnolo, S; van Warmerdam, C

    2007-06-07

    This standard establishes requirements that, when coupled with Lawrence Livermore National Laboratory's (LLNL's) Integrated Safety Management System (ISMS) methods and other Work Smart Standards for assuring worker safety, assure that the impacts of nonnuclear operations authorized in LLNL facilities are well understood and controlled in a manner that protects the health of workers, the public, and the environment. All LLNL facilities shall be classified based on potential for adverse impact of operations to the health of co-located (i.e., nearby) workers and the public in accordance with this standard, Title 10 Code of Federal Regulations (10 CFR) 830, Subpart B, and Department of Energy Order (DOE O) 420.2A.

  1. Quality assurance plan for the data acquisition and management system for monitoring the fuel oil spill at the Sandia National Laboratories installation in Livermore, California

    SciTech Connect (OSTI)

    Peerenboom, J.P.; Leser, C.C.; Ramsey, G.M.; Widing, M.A.

    1995-04-01

    In February 1975, the accidental puncture of an underground transfer line buried about 4 ft below the ground surface at the SNL installation in Livermore, California, resulted in the release of approximately 225.5 m{sup 3} of No. 2 diesel fuel. This report describes the formal quality assurance plan that will be used for the data acquisition and management system developed to monitor a bioremediation pilot study by Argonne National Laboratory in association with Sandia National Laboratories. The data acquisition and management system will record the site data during the bioremediation effort and assist users in site analysis. The designs of the three major subsystems of this system are described in this report. Quality assurance criteria are defined for the management, performance, and assessment of the system. Finally, the roles and responsibilities for configuration management of this system are defined for the entire life cycle of the project.

  2. Independent Oversight Inspection of Environment, Safety, and Health Management at the Lawrence Livermore National Laboratory, Technical Appendices, Volume II, December 2004

    Office of Energy Efficiency and Renewable Energy (EERE)

    The U.S. Department of Energy (DOE) Office of Independent Oversight and Performance Assurance (OA), within the Office of Security and Safety Performance Assurance (SSA), conducted an inspection of environment, safety, and health (ES&H) at the DOE Lawrence Livermore National Laboratory (LLNL) during October and November 2004. The inspection was performed by the OA Office of Environment, Safety and Health Evaluations. Volume II of this report provides four technical appendices (C through F) containing detailed results of the OA review. Appendix C provides the results of the review of the application of the core functions of ISM for LLNL work activities. Appendix D presents the results of the review of NNSA, LSO, and contractor feedback and continuous improvement processes. Appendix E presents the results of the review of Plutonium Building essential safety system functionality, and Appendix F presents the results of the review of management of the selected focus areas.

  3. Production and isolation of homologs of flerovium and element 115 at the Lawrence Livermore National Laboratory Center for Accelerator Mass Spectrometry

    SciTech Connect (OSTI)

    Despotopulos, John D.; Kmak, Kelly N.; Gharibyan, Narek; Brown, Thomas A.; Grant, Patrick M.; Henderson, Roger A.; Moody, Kent J.; Tumey, Scott J.; Shaughnessy, Dawn A.; Sudowe, Ralf

    2015-10-01

    Here, new procedures have been developed to isolate no-carrier-added (NCA) radionuclides of the homologs and pseudo-homologs of flerovium (Hg, Sn) and element 115 (Sb), produced by 12–15 MeV proton irradiation of foil stacks with the tandem Van-de-Graaff accelerator at the Lawrence Livermore National Laboratory Center for Accelerator Mass Spectrometry (CAMS) facility. The separation of 113Sn from natIn foil was performed with anion-exchange chromatography from hydrochloric and nitric acid matrices. A cation-exchange chromatography method based on hydrochloric and mixed hydrochloric/hydroiodic acids was used to separate 124Sb from natSn foil. A procedure using Eichrom TEVA resin was developed to separate 197Hg from Au foil. These results demonstrate the suitability of using the CAMS facility to produce NCA radioisotopes for studies of transactinide homologs.

  4. Production and isolation of homologs of flerovium and element 115 at the Lawrence Livermore National Laboratory Center for Accelerator Mass Spectrometry

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Despotopulos, John D.; Kmak, Kelly N.; Gharibyan, Narek; Brown, Thomas A.; Grant, Patrick M.; Henderson, Roger A.; Moody, Kent J.; Tumey, Scott J.; Shaughnessy, Dawn A.; Sudowe, Ralf

    2015-10-01

    Here, new procedures have been developed to isolate no-carrier-added (NCA) radionuclides of the homologs and pseudo-homologs of flerovium (Hg, Sn) and element 115 (Sb), produced by 12–15 MeV proton irradiation of foil stacks with the tandem Van-de-Graaff accelerator at the Lawrence Livermore National Laboratory Center for Accelerator Mass Spectrometry (CAMS) facility. The separation of 113Sn from natIn foil was performed with anion-exchange chromatography from hydrochloric and nitric acid matrices. A cation-exchange chromatography method based on hydrochloric and mixed hydrochloric/hydroiodic acids was used to separate 124Sb from natSn foil. A procedure using Eichrom TEVA resin was developed to separate 197Hg frommore » Au foil. These results demonstrate the suitability of using the CAMS facility to produce NCA radioisotopes for studies of transactinide homologs.« less

  5. Submission of Notice of Termination of Coverage Under the National Pollutant Discharge Elimination System General Permit No. CAS000002 for WDID No. 201C349114, Lawrence Livermore National Laboratory Ignition Facility Construction Project

    SciTech Connect (OSTI)

    Brunckhorst, K

    2009-04-21

    This is the completed Notice of Termination of Coverage under the General Permit for Storm Water Discharges Associated with Construction Activity. Construction activities at the National Ignition Facility Construction Project at Lawrence Livermore National Laboratory are now complete. The Notice of Termination includes photographs of the completed construction project and a vicinity map.

  6. Pioneer Prairie II Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    In Service Owner Horizon Wind Energy Developer Horizon Wind Energy Location Northeastern IA IA Coordinates 43.450321, -92.551074 Show Map Loading map... "minzoom":false,"mappi...

  7. Microsoft Word - Map and Directions to UV.doc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Schilletter-University Village (SUV) Iowa State University Ames, IA 50011 Ames Laboratory - Public Affairs 111 TASF Iowa State University Ames, IA 50011-3020 Page 1 515.294.9557 1...

  8. PDSF User Meeting 03-04-14.pptx

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Outages * None Other Topics from PDSF Staff * New login nodes are online - Accessed v ia l oad b alancer a t pdsf.nersc.gov * Individual a ccess i s a vailable v ia p dsf6, p...

  9. Microsoft Word - Map and Directions to FrCt.doc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Frederiksen Court Housing Iowa State University Ames, IA 50011 Ames Laboratory - Public Affairs 111 TASF Iowa State University Ames, IA 50011-3020 Page 1 515.294.9557 1 Enter Ames...

  10. Pioneer Prairie I (3Q08) Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    In Service Owner Horizon Wind Energy Developer Horizon Wind Energy Location Northeastern IA IA Coordinates 43.450321, -92.551074 Show Map Loading map... "minzoom":false,"mappi...

  11. Chapter 17 - Special Contracting Methods | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    June 2008 17.1 - Attachment 2 - OFPP Business Case Guidance 17.1 - Attachment 3A - IA FUNDS OUT Assisted Aquisition Part A 17.1 - Attachment 3A - IA FUNDS OUT Assisted...

  12. Fermilab Today

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    4 percent. The key is a special type of Type Ia supernovae. Type Ia supernovae are thermonuclear explosions of white dwarfs - the very dense remnants of stars that have burned all...

  13. Office Of International Affairs Expert Listing 2/25/14 Organization

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    7162 IA-21 Russian & Eurasian Affairs Iraq Support David Hester 3184 ... IA-22 African & Middle Eastern Affairs Iraq Josh McKearin 3149 Josh.McKearin@hq.doe.gov ...

  14. Workbook Contents

    U.S. Energy Information Administration (EIA) Indexed Site

    Date:","12312015" ,"Next Release Date:","01292016" ,"Excel File Name:","n3050ia3m.xls" ,"Available from Web Page:","http:tonto.eia.govdnavnghistn3050ia3m.htm"...

  15. Workbook Contents

    U.S. Energy Information Administration (EIA) Indexed Site

    File Name:","n3020ia4m.xls" ,"Available from Web Page:","http:tonto.eia.govdnavnghistn3020ia4m.htm" ,"Source:","Energy Information Administration" ,"For Help,...

  16. Workbook Contents

    U.S. Energy Information Administration (EIA) Indexed Site

    File Name:","n3020ia3m.xls" ,"Available from Web Page:","http:tonto.eia.govdnavnghistn3020ia3m.htm" ,"Source:","Energy Information Administration" ,"For Help,...

  17. Final Technical Report: Discovering the Nature of Dark Energy: Towards

    Office of Scientific and Technical Information (OSTI)

    Better Distances from Type Ia Supernovae (Technical Report) | SciTech Connect Final Technical Report: Discovering the Nature of Dark Energy: Towards Better Distances from Type Ia Supernovae Citation Details In-Document Search Title: Final Technical Report: Discovering the Nature of Dark Energy: Towards Better Distances from Type Ia Supernovae The final technical report from the project "Discovering the Nature of Dark Energy: Towards Better Distances from Type Ia Supernovae" led at

  18. Filtering techniques to minimize the effect of long motor leads...

    Office of Scientific and Technical Information (OSTI)

    Resource Type: Conference Resource Relation: Conference: IEEEIndustrial Application ... record of the 1995 IEEE Industry Applications Society, thirtieth IAS annual meeting. ...

  19. Departmental information architecture

    SciTech Connect (OSTI)

    Tiemann, M.

    1997-11-01

    This report contains viewgraphs on the models, principles, publications, future directions, and DOE IA guidance highlights of information architecture software.

  20. Draft Site-wide Environmental Impact Statement for Continued Operation of Lawrence Livermore National Laboratory and Supplemental Stockpile Stewardship and Management Programmatic Environmental Impact Statement

    SciTech Connect (OSTI)

    N /A

    2004-02-27

    This ''Site-wide Environmental Impact Statement for Continued Operation of Lawrence Livermore National Laboratory and Supplemental Stockpile Stewardship and Management Programmatic Environmental Impact Statement'' (LLNL SW/SPEIS) describes the purpose and need for agency action for the continued operation of LLNL and analyzes the environmental impacts of these operations. The primary purpose of continuing operation of LLNL is to provide support for the National Nuclear Security Administration's (NNSA's) nuclear weapons stockpile stewardship missions. LLNL, located about 40 miles east of San Francisco, California, is also needed to support other U.S. Department of Energy (DOE) programs and Federal agencies such as the U.S. Department of Defense, Nuclear Regulatory Commission, U.S. Environmental Protection Agency (EPA), and the newly established U.S. Department of Homeland Security. This LLNL SW/SPEIS analyzes the environmental impacts of reasonable alternatives for ongoing and foreseeable future operations, facilities, and activities at LLNL. The reasonable alternatives include the No Action Alternative, Proposed Action, and the Reduced Operation Alternative. The major decision to be made by DOE/NNSA is to select one of the alternatives for the continued operation of the LLNL. As part of the Proposed Action, DOE/NNSA is considering: using additional materials including plutonium on the National Ignition Facility (NIF); increasing the administrative limit for plutonium in the Superblock, which includes the Plutonium Facility, the Tritium Facility, and the Hardened Engineering Test Building; conducting the Integrated Technology Project, using laser isotope separation to provide material for Stockpile Stewardship experiments, in the Plutonium Facility; increasing the material-at-risk limit for the Plutonium Facility; and increasing the Tritium Facility material-at-risk. A discussion of these issues is presented in Section S.5.2, Proposed Action. The ''National

  1. MANAGEMENT PRE-START REVIEW FINAL REPORT FOR THE BIOSAFETY LEVEL 3 (BSL-3) FACILITY (B368) LAWRENCE LIVERMORE NATIONAL LABORATORY

    SciTech Connect (OSTI)

    Hull, R; O'brien, J; Owens, T; Salvo, V; Sassone, D; Tuholski, S J; Tsan, S

    2006-07-25

    A Lawrence Livermore National Laboratory (LLNL) Management Pre-Start Review (MPR) Team was formed to independently verify the operational readiness of Building 368 (B368) Biosafety Level III (BSL-3) Facility to conduct research with biological pathogens and toxins including those considered Select Agents. Review objectives and criteria were developed from the DOE/NNSA and LLNL requirements. These were provided in the Implementation Plan for the Biosafety Level III (BSL-3) Facility Management Pre-Start Review (BSL-3 MPR) at Lawrence Livermore National Laboratory that was reviewed and approved by DOE/NNSA-LSO. The formal part of the LLNL MPR for the BSL-3 Facility was begun in August of 2005 but work on the MPR was stopped in October of 2005 due to the need for LLNL to reassess organizational and operational controls and respond to Centers for Disease Control and Prevention inquiries related to a shipping incident involving select agents. The MPR was restarted in mid-June of 2006. Preliminary facility tours and familiarization with project documents took place in June of 2005. The Independent Management Review Team consists of seven members led by a Team Leader with expertise in management, operations, and safety basis experience with biosafety laboratories. Other team members have expertise in electrical engineering, security, environmental/waste management/regulatory compliance, biosafety/industrial hygiene/medical, structural engineering, and mechanical engineering. The MPR Team reviewed various documents, including authorization basis, safety, emergency preparedness, and various operations, configuration, and management plans. They also reviewed building plans, equipment repair/maintenance documents, training records, and many standard operating procedures. The MPR resulted in three Pre-Start Findings, one Post-Start/Critical Finding, and four observations which are shown on Tables 1, 2, and 3, respectively. Based upon this review the Team feels that the B368

  2. DOE - Office of Legacy Management -- Ames Laboratory Research Reactor

    Office of Legacy Management (LM)

    Facility - IA 03 Ames Laboratory Research Reactor Facility - IA 03 FUSRAP Considered Sites Site: Ames Laboratory Research Reactor Facility (IA.03) Designated Name: Alternate Name: Location: Evaluation Year: Site Operations: Site Disposition: Radioactive Materials Handled: Primary Radioactive Materials Handled: Radiological Survey(s): Site Status: Also see http://www.ameslab.gov/ Documents Related to Ames Laboratory Research Reactor Facility

  3. Report on the Threatened Valley Elderberry Longhorn Beetle and its Elderberry Food Plant at the Lawrence Livermore National Laboratory--Site 300

    SciTech Connect (OSTI)

    Arnold, Ph.D., R A; Woollett, J

    2004-11-16

    This report describes the results of an entomological survey in 2002 to determine the presence of the federally-listed, threatened Valley Elderberry Longhorn Beetle or ''VELB'' (Desmocerus culifornicus dimorphus: Coleoptera, Cerambycidae) and its elderberry food plant (Sumbucus mexicana: Caprifoliaceae) on the Lawrence Livermore National Laboratory's (LLNL) Experimental Test Site, known as Site 300. In addition, an area located immediately southeast of Site 300, which is owned and managed by the California Department of Fish and Game (CDFG), but secured by LLNL, was also included in this survey. This report will refer to the survey areas as the LLNL-Site 300 and the CDFG site. The 2002 survey included mapping the locations of elderberry plants that were observed using a global positioning system (GPS) to obtain positional coordinates for every elderberry plant at Site 300. In addition, observations of VELB adults and signs of their infestation on elderberry plants were also mapped using GPS technology. LLNL requested information on the VELB and its elderberry food plants to update earlier information that had been collected in 1991 (Arnold 1991) as part of the 1992 EIS/EIR for continued operation of LLNL. No VELB adults were observed as part of this prior survey. The findings of the 2002 survey reported herein will be used by LLNL as it updates the expected 2004 Environmental Impact Statement for ongoing operations at LLNL, including Site 300.

  4. Status report on the geology of the Lawrence Livermore National Laboratory site and adjacent areas. Volume I. Text and appendices A-E

    SciTech Connect (OSTI)

    Carpenter, D.W.; Puchlik, K.P.; Ramirez, A.L.; Wagoner, J.L.; Knauss, K.G.; Kasameyer, P.W.

    1980-10-01

    In April, 1979, geoscience personnel at Lawrence Livermore National Laboratory (LLNL) initiated comprehensive geologic, seismologic, and hydrologic investigations of the LLNL site and nearby areas. These investigations have two objectives: 1. to obtain data for use in preparing a Final Environmental Impact Report for LLNL, pursuant to the National Environmental Policy Act; 2. to obtain data for use in improving the determination of a design basis earthquake for structural analysis of LLNL facilities. The first phases of these investigations have been completed. Work completed to date includes a comprehensive literature review, analyses of three sets of aerial photographs, reconnaissance geophysical surveys, examination of existing LLNL site borehole data, and the logging of seven exploratory trenches, segments of two sewer trenches, a deep building foundation excavation, a road cut, and an enlarged creek bank exposure. One absolute age date has been obtained by the /sup 14/C method and several dates of pedogenic carbonate formation have been obtained by the /sup 230/Th//sup 234/U method. A seismic monitoring network has been established, and planning for a site hydrologic monitoring program and strong motion instrument network has been completed. The seismologic and hydrologic investigations are beyond the scope of this report and will be discussed separately in future documents.

  5. NEW GUN CAPABILITY WITH INTERCHANGABLE BARRELS TO INVESTIGATE LOW VELOCITY IMPACT REGIMES AT THE LAWRENCE LIVERMORE NATIONAL LABORATORY HIGH EXPLOSIVES APPLICATIONS FACILITY

    SciTech Connect (OSTI)

    Vandersall, K S; Behn, A; Gresshoff, M; Jr., L F; Chiao, P I

    2009-09-16

    A new gas gun capability is being activated at Lawrence Livermore National Laboratories located in the High Explosives Applications Facility (HEAF). The single stage light gas (dry air, nitrogen, or helium) gun has interchangeable barrels ranging from 25.4 mm to 76.2 mm in diameter with 1.8 meters in length and is being fabricated by Physics Applications, Inc. Because it is being used for safety studies involving explosives, the gun is planned for operation inside a large enclosed firing tank, with typical velocities planned in the range of 10-300 m/s. Three applications planned for this gun include: low velocity impact of detonator or detonator/booster assemblies with various projectile shapes, the Steven Impact test that involves impact initiation of a cased explosive target, and the Taylor impact test using a cylindrical explosive sample impacted onto a rigid anvil for fracture studies of energetic materials. A highlight of the gun features, outline on work in progress for implementing this capability, and discussion of the planned areas of research will be included.

  6. Lawrence Livermore National Laboratory safeguards and security quarterly progress report to the US Department of Energy: Quarter ending September 30, 1993

    SciTech Connect (OSTI)

    Ruhter, W.D.; Strait, R.S.; Mansur, D.L.; Davis, G.

    1993-10-01

    The Lawrence Livermore National Laboratory (LLNL) carries out safeguards and security activities for the Department of Energy (DOE), Office of Safeguards and Security (OSS), as well as other organizations, both within and outside the DOE. This document summarizes the activities conducted for the OSS during the fourth quarter of Fiscal Year 1993 (July through September, 1993). The nature and scope of the activities carried out for OSS at LLNL require a broad base of technical expertise. To assure projects are staffed and executed effectively, projects are conducted by the organization at LLNL best able to supply the needed technical expertise. These projects are developed and managed by senior program managers. Institutional oversight and coordination is provided through the LLNL Deputy Director`s office. At present, the Laboratory is supporting OSS in five areas: Safeguards Technology, Safeguard System Studies, Computer Security, DOE Automated Physical Security and DOE Automated Visitor Access Control System. The remainder of this report describes the activities in each of these five areas. The information provided includes an introduction which briefly describes the activity, summary of major accomplishments, task descriptions with quarterly progress, summaries of milestones and deliverables and publications published this quarter.

  7. Historical Doses from Tritiated Water and Tritiated Hydrogen Gas Released to the Atmosphere from Lawrence Livermore National Laboratory (LLNL). Part 6. Summary

    SciTech Connect (OSTI)

    Peterson, S

    2007-09-05

    Throughout fifty-three years of operations, an estimated 792,000 Ci (29,300 TBq) of tritium have been released to the atmosphere at the Livermore site of Lawrence Livermore National Laboratory (LLNL); about 75% was tritium gas (HT) primarily from the accidental releases of 1965 and 1970. Routine emissions contributed slightly more than 100,000 Ci (3,700 TBq) HT and about 75,000 Ci (2,800 TBq) tritiated water vapor (HTO) to the total. A Tritium Dose Reconstruction was undertaken to estimate both the annual doses to the public for each year of LLNL operations and the doses from the few accidental releases. Some of the dose calculations were new, and the others could be compared with those calculated by LLNL. Annual doses (means and 95% confidence intervals) to the potentially most exposed member of the public were calculated for all years using the same model and the same assumptions. Predicted tritium concentrations in air were compared with observed mean annual concentrations at one location from 1973 onwards. Doses predicted from annual emissions were compared with those reported in the past by LLNL. The highest annual mean dose predicted from routine emissions was 34 {micro}Sv (3.4 mrem) in 1957; its upper confidence limit, based on very conservative assumptions about the speciation of the release, was 370 {micro}Sv (37 mrem). The upper confidence limits for most annual doses were well below the current regulatory limit of 100 {micro}Sv (10 mrem) for dose to the public from release to the atmosphere; the few doses that exceeded this were well below the regulatory limits of the time. Lacking the hourly meteorological data needed to calculate doses from historical accidental releases, ingestion/inhalation dose ratios were derived from a time-dependent accident consequence model that accounts for the complex behavior of tritium in the environment. Ratios were modified to account for only those foods growing at the time of the releases. The highest dose from an

  8. Chapter 17 - Special Contracting Methods | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    7 - Special Contracting Methods Chapter 17 - Special Contracting Methods 17.1 - Attachment 1 - OFPP Guidance Interagence Acquisitions June 2008 17.1 - Attachment 2 - OFPP Business Case Guidance 17.1 - Attachment 3A - IA FUNDS OUT Assisted Aquisition Part A 17.1 - Attachment 3A - IA FUNDS OUT Assisted Aquisition Part B 17.1 - Attachment 3B - IA FUNDS OUT Interagency Transaction Part A 17.1 - Attachment 3B - IA FUNDS OUT Interagency Transaction Part B 17.1 - Attachment 3C - IA STRIPES Cover form

  9. Inhibiting voltage suppression in lithium/fluorinated carbon batteries

    SciTech Connect (OSTI)

    Shia, G.A.; Nalewajek, D.; Pyszczek, M.F.

    1988-12-13

    This patent describes a lithium/fluorinated carbon battery having a reduced initial voltage suppression which comprises the incorporation in the battery cathode of fluorinated carbon which has been reacted with a compound selected from the group consisting of a Group IA metal-alkyl compound and a Group IA metal-aryl compound, which Group IA metal-aryl compound has at least 10 carbon atoms, until surface fluorine on the fluorinated carbon has been stripped and alkyl or aryl groups from the Group IA metal-alkyl compound or Group IA metal-aryl compound are substituted for surface fluorine atoms.

  10. Why does Livermore need LANSCE?

    SciTech Connect (OSTI)

    Fortner, R.

    1995-10-01

    Five years ago, I was the associate director of the nuclear test program, so I have a really close view of the role of the nuclear testing in the weapons program. My perceptions are strongly driven by the fact that we have lost testing and what that really means. I want to explain to you why I think we really need a science-based stockpile stewardship program and what the issues are interms of having lost nuclear testing.

  11. Lawrence Livermore National Security, LLC

    DOE Patents [OSTI]

    Farmer, Joseph C.; Bandhauer, Todd M.

    2015-12-08

    An energy storage system having a multiple different types of energy storage and conversion devices. Each device is equipped with one or more sensors and RFID tags to communicate sensor information wirelessly to a central electronic management system, which is used to control the operation of each device. Each device can have multiple RFID tags and sensor types. Several energy storage and conversion devices can be combined.

  12. Livermore Valley Open Campus (LVOC)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Models for Integrating EnergyWater Facilities Atmospheric Radiation Measurement Climate ... eliminate the need for rare earth element magnets in wind-turbine generators. ...

  13. Lawrence Livermore National Laboratory (LLNL) Experimental Test Site (Site 300) Salinity Evaluation and Minimization Plan for Cooling Towers and Mechanical Equipment Discharges

    SciTech Connect (OSTI)

    Daily III, W D

    2010-02-24

    This document was created to comply with the Central Valley Regional Water Quality Control Board (CVRWQCB) Waste Discharge Requirement (Order No. 98-148). This order established new requirements to assess the effect of and effort required to reduce salts in process water discharged to the subsurface. This includes the review of technical, operational, and management options available to reduce total dissolved solids (TDS) concentrations in cooling tower and mechanical equipment water discharges at Lawrence Livermore National Laboratory's (LLNL's) Experimental Test Site (Site 300) facility. It was observed that for the six cooling towers currently in operation, the total volume of groundwater used as make up water is about 27 gallons per minute and the discharge to the subsurface via percolation pits is 13 gallons per minute. The extracted groundwater has a TDS concentration of 700 mg/L. The cooling tower discharge concentrations range from 700 to 1,400 mg/L. There is also a small volume of mechanical equipment effluent being discharged to percolation pits, with a TDS range from 400 to 3,300 mg/L. The cooling towers and mechanical equipment are maintained and operated in a satisfactory manner. No major leaks were identified. Currently, there are no re-use options being employed. Several approaches known to reduce the blow down flow rate and/or TDS concentration being discharged to the percolation pits and septic systems were reviewed for technical feasibility and cost efficiency. These options range from efforts as simple as eliminating leaks to implementing advanced and innovative treatment methods. The various options considered, and their anticipated effect on water consumption, discharge volumes, and reduced concentrations are listed and compared in this report. Based on the assessment, it was recommended that there is enough variability in equipment usage, chemistry, flow rate, and discharge configurations that each discharge location at Site 300 should be

  14. Report on Department of Homeland Security Sponsored Research Project at Lawrence Livermore National Laboratory on Preparation for an Improvised Nuclear Device Event

    SciTech Connect (OSTI)

    A., B

    2008-07-31

    Following the events of September 11th, a litany of imaginable horribles was trotted out before an anxious and concerned public. To date, government agencies and academics are still grappling with how to best respond to such catastrophes, and as Senator Lieberman's quote says above, now is the time to plan and prepare for such events. One of the nation's worst fears is that terrorists might detonate an improvised nuclear device (IND) in an American city. With 9/11 serving as the catalyst, the government and many NGOs have invested money into research and development of response capabilities throughout the country. Yet, there is still much to learn about how to best respond to an IND event. My summer 2008 internship at Lawrence Livermore National Laboratory afforded me the opportunity to look in depth at the preparedness process and the research that has been conducted on this issue. While at the laboratory I was tasked to collect, combine, and process research on how cities and the federal government can best prepare for the horrific prospect of an IND event. Specific projects that I was involved with were meeting reports, research reviews, and a full project report. Working directly with Brooke Buddemeier and his support team at the National Atmospheric Release Advisory Center, I was able to witness first hand, preparation for meetings with response planners to inform them of the challenges that an IND event would pose to the affected communities. In addition, I supported the Homeland Security Institute team (HSI), which was looking at IND preparation and preparing a Congressional report. I participated in meetings at which local responders expressed their concerns and contributed valuable information to the response plan. I specialized in the psycho-social aspects of an IND event and served as a technical advisor to some of the research groups. Alongside attending and supporting these meetings, I worked on an independent research project which collected

  15. Welcome to DOE International | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Welcome to DOE International Welcome to DOE International April 18, 2014 - 11:16am Addthis Photo courtesy of Free Images. Photo courtesy of Free Images. Jonathan Elkind Jonathan Elkind Assistant Secretary for International Affairs More about IA Check out our staff bios. Learn more about our initiatives. Welcome to the U.S. Department of Energy's Office of International Affairs (IA). IA has the primary responsibility for coordinating DOE's international cooperation in the areas of energy,

  16. Memo from Robert Myers regarding DOE Benefit Value Desk Manual

    Energy Savers [EERE]

    (NC), and Boston (MA) | Department of Energy Webcasts » Member Case Studies: LED Street Lighting Programs in Algona (IA), Asheville (NC), and Boston (MA) Member Case Studies: LED Street Lighting Programs in Algona (IA), Asheville (NC), and Boston (MA) This May 8, 2013 webcast featured presentations from DOE Municipal Solid-State Street Lighting Consortium member cities about their experiences with LED street lighting. Presenters John Bilsten of Algona (IA) Municipal Utilities, Maggie Ullman

  17. About Us | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Us About Us IA has the primary responsibility for coordinating the efforts of diverse elements in the Department to ensure a unified voice in our international energy policy. IA works closely with Departmental elements, other Federal agencies, national and international organizations and institutions, and the private sector to coordinate and align our international energy activities with our national energy policies. IA coordinates DOE international initiatives on clean energy, climate change,

  18. Study of Buoyancy-Driven Turbulent Nuclear Burning and Validation of Type

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Ia Supernova Models | Argonne Leadership Computing Facility Study of Buoyancy-Driven Turbulent Nuclear Burning and Validation of Type Ia Supernova Models PI Name: Don Lamb PI Email: lamb@oddjob.uchicago.edu Institution: ASC/Alliance Flash Center, University of Chicago Allocation Program: INCITE Allocation Hours at ALCF: 80,000,000 Year: 2011 Research Domain: Physics We will study important aspects of Type Ia supernovae which are among the brightest and most powerful explosions in the

  19. From: Pam Hartwig To: Congestion Study Comments Subject:

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    NOT be an established National Corridor. In other words: DO NOT ESTABLISH ANY NATIONAL INTERST ENERGY TRANSMISSION CORRIDOR Pam Hartwig 1076 Virginia Ave Bennett Ia 52721

  20. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... (SC) (United States) USDOE Office of Worker and Community Transition (WT) (United ...

  1. Top of Iowa III Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Scale Wind Facility Status In Service Owner Madison Gas & Electric Developer Midwest Renewable Energy Projects Energy Purchaser Madison Gas & Electric Location Worth County IA...

  2. Top of Iowa Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Commercial Scale Wind Facility Status In Service Developer Zilkha RenewableMidwest Renewable Energy Purchaser AlliantIES Utilities Location Worth County IA Coordinates...

  3. Member Case Studies: LED Street Lighting Programs in Algona ...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Presenters John Bilsten of Algona (IA) Municipal Utilities, Maggie Ullman of the City of Asheville (NC), and Glenn Cooper of the City of Boston (MA) discussed planning, financing, ...

  4. ,"Iowa Natural Gas Underground Storage Volume (MMcf)"

    U.S. Energy Information Administration (EIA) Indexed Site

    Underground Storage Volume (MMcf)" ,"Click worksheet name or tab at bottom for data" ...dnavnghistn5030ia2m.htm" ,"Source:","Energy Information Administration" ,"For Help, ...

  5. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... financiers, and supply chain participants, to identify barriers and opportunities. ...

  6. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    TX (United States) AmeriFlux Ames Laboratory (AMES), Ames, IA (United States) ... bonding (1) chloramphenicol (1) design (1) dna (1) dna polymerases (1) efficiency (1) ...

  7. Platinum Ethanol LLC | Open Energy Information

    Open Energy Info (EERE)

    Platinum Ethanol LLC Jump to: navigation, search Name: Platinum Ethanol LLC Place: Arthut, Iowa Product: Developed a 110m gallon (416m litre) ethanol plant in Arthur, IA....

  8. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... of the phase transformation behavior responsible for the rich new physical ...

  9. Victory Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Invenergy Energy Purchaser MidAmerican Energy Location Carroll and Crawford Counties IA Coordinates 42.144715, -95.138183 Show Map Loading map... "minzoom":false,"mappings...

  10. Eclipse | Open Energy Information

    Open Energy Info (EERE)

    Clipper Windpower Development Company Energy Purchaser MidAmerican Energy Location Adair IA Coordinates 41.53604897, -94.65567112 Show Map Loading map... "minzoom":false,"mapp...

  11. Clarion-Goldfield School Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    High School Energy Purchaser Clarion-Goldfield High School Location Wright County IA Coordinates 42.737179, -93.718132 Show Map Loading map... "minzoom":false,"mappings...

  12. Contractor Past Performance Information

    Broader source: Energy.gov (indexed) [DOE]

    a. Part A. b. Part B. 2. Interagency agreement format and samples. a. STRIPES IA funds out templates for interagency assisted acquisitions and interagency transactions....

  13. Roeder Farms | Open Energy Information

    Open Energy Info (EERE)

    Developer 5045 Wind Partners Energy Purchaser Alliant Energy Location Des Moines IA Coordinates 43.29729211, -93.28315258 Show Map Loading map... "minzoom":false,"mapp...

  14. Akron-Westfield School District Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Comm. Schools Energy Purchaser AlliantIES Utilities Location Akron-Westfield IA Coordinates 42.7859, -96.5836 Show Map Loading map... "minzoom":false,"mappingservi...

  15. Hardin-Hilltop Wind Project | Open Energy Information

    Open Energy Info (EERE)

    Community wind Developer Community wind Energy Purchaser Alliant Location Greene County IA Coordinates 42.086204, -94.349999 Show Map Loading map... "minzoom":false,"mappings...

  16. Midland Power Coop | Open Energy Information

    Open Energy Info (EERE)

    search Name: Midland Power Coop Address: 1005 E. Lincoln Way Place: Jefferson, IA Zip: 50129 Phone Number: 1-515-386-4111 Facebook: https:www.facebook.commidlandpower...

  17. Laurel | Open Energy Information

    Open Energy Info (EERE)

    RPM Access Wind Development Energy Purchaser MidAmerican Energy Location Haverhill IA Coordinates 41.89096884, -92.97214508 Show Map Loading map... "minzoom":false,"mapp...

  18. Morning Light | Open Energy Information

    Open Energy Info (EERE)

    Clipper Windpower Development Company Energy Purchaser MidAmerican Energy Location Casey IA Coordinates 41.44819506, -94.58280087 Show Map Loading map... "minzoom":false,"mapp...

  19. AL2007-03.doc

    Broader source: Energy.gov (indexed) [DOE]

    from GAO and Inspector General (IG) reports of other federal agencies. Introduction The IA relationship involves two Federal agencies that enter into a relationship for the...

  20. Story County Wind Project II | Open Energy Information

    Open Energy Info (EERE)

    Energy Resources Developer NextEra Energy Resources Location Story & Hardin Counties IA Coordinates 42.301351, -93.45156 Show Map Loading map... "minzoom":false,"mappingse...

  1. Forest City High School Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    High School Energy Purchaser Forest City Community School District Location Forest City IA Coordinates 43.266011, -93.653378 Show Map Loading map... "minzoom":false,"mappings...

  2. Endeavor (3Q07) Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Resources Energy Purchaser AlliantIES Utilities Location Osceola and Dickenson Counties IA Coordinates 43.416841, -95.423477 Show Map Loading map... "minzoom":false,"mappings...

  3. Endeavor (3Q08) Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Resources Developer NextEra Energy Resources Location Osceola and Dickenson Counties IA Coordinates 43.432497, -95.452752 Show Map Loading map... "minzoom":false,"mappings...

  4. Neppel Wind Power Project | Open Energy Information

    Open Energy Info (EERE)

    Developer Alliant Energy Energy Purchaser AlliantIES Utilities Location Armstrong IA Coordinates 43.402001, -94.578989 Show Map Loading map... "minzoom":false,"mappings...

  5. Iowa Distributed Wind Generation Project | Open Energy Information

    Open Energy Info (EERE)

    Energy Purchaser Consortium -- Cedar Falls leads with 23 ownership Location Algona IA Coordinates 43.0691, -94.2255 Show Map Loading map... "minzoom":false,"mappingservi...

  6. Winnebago I Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Iberdrola Renewables Energy Purchaser Dairyland Power Location Winnebago County IA Coordinates 43.317944, -93.761537 Show Map Loading map... "minzoom":false,"mappings...

  7. Bulldog | Open Energy Information

    Open Energy Info (EERE)

    Bulldog LLC Energy Purchaser Farmers' Cooperative of Greenfield Location Greenfield IA Coordinates 41.22708706, -94.43487167 Show Map Loading map... "minzoom":false,"mapp...

  8. Wolverine | Open Energy Information

    Open Energy Info (EERE)

    Wolverine LLC Energy Purchaser Farmers' Cooperative of Greenfield Location Greenfield IA Coordinates 41.39310112, -94.44487095 Show Map Loading map... "minzoom":false,"mapp...

  9. Pocahontas Prairie | Open Energy Information

    Open Energy Info (EERE)

    Owner Algonquin Power Developer Gamesa Energy Purchaser Merchant Location Pomeroy IA Coordinates 42.62183365, -94.6978569 Show Map Loading map... "minzoom":false,"mappi...

  10. Sibley Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Northern Alternative Energy Energy Purchaser AlliantIES Utilities Location Sibley IA Coordinates 43.4037, -95.7417 Show Map Loading map... "minzoom":false,"mappingservi...

  11. Eldora-New Providence Schools Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Schools Energy Purchaser Eldora - New Providence Schools Location Hardin County IA Coordinates 42.3794, -93.2497 Show Map Loading map... "minzoom":false,"mappingservi...

  12. Pioneer Grove | Open Energy Information

    Open Energy Info (EERE)

    Acciona Energy Energy Purchaser Central Iowa Power Cooperative Location Mechanicsville IA Coordinates 41.85086289, -91.23407364 Show Map Loading map... "minzoom":false,"mapp...

  13. Little Cedar | Open Energy Information

    Open Energy Info (EERE)

    Developer Paul Roeder Energy Purchaser Dairyland Power Cooperative Location Little Cedar IA Coordinates 43.3858262, -92.7595209 Show Map Loading map... "minzoom":false,"mappin...

  14. Waverly III Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Developer Waverly Light & Power Energy Purchaser Waverly Light & Power Location Waverly IA Coordinates 42.7241, -92.4786 Show Map Loading map... "minzoom":false,"mappingservi...

  15. Nevada High School Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Minnesota Windpower Energy Purchaser AlliantIES Utilities Location NV - Story County IA Coordinates 42.020791, -93.435997 Show Map Loading map... "minzoom":false,"mappings...

  16. Zachary Ridge/LJ Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Energy Energy Purchaser AlliantIES Utilities Location Osceola County near Sibley IA Coordinates 43.4037, -95.7417 Show Map Loading map... "minzoom":false,"mappingservi...

  17. Wind Walkers | Open Energy Information

    Open Energy Info (EERE)

    Partners Developer 5045 Wind Partners Energy Purchaser Alliant Energy Location Waukon IA Coordinates 43.2655101, -91.4863848 Show Map Loading map... "minzoom":false,"mappin...

  18. Intrepid Expansion Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Energy Energy Purchaser MidAmerican Energy Location Buena Vista & Sac Counties IA Coordinates 42.483311, -95.308807 Show Map Loading map... "minzoom":false,"mappings...

  19. Endeavor (2Q08) Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Resources Energy Purchaser AlliantIES Utilities Location Osceola and Dickenson Counties IA Coordinates 43.427012, -95.414987 Show Map Loading map... "minzoom":false,"mappings...

  20. Clay Central Everly School Dist Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Everly School District Energy Purchaser Clay CentralEverly School District Location IA Coordinates 43.1392, -95.2644 Show Map Loading map... "minzoom":false,"mappingservi...