National Library of Energy BETA

Sample records for beam time user

  1. User 'To Do' List after Beam Time is Assigned | Linac Coherent...

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

    ... LCLS users must complete several safety training courses online BEFORE traveling to SLAC. Complete User Agreements Before user experiments begin, a User Agreement must be ...

  2. User 'To Do' List as Soon as Beam Time is Assigned | Stanford...

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

    ... We will contact you if we need additional information. For SSRL, send emails to Order Gases and Cryogenics Gases and cryogenics can be charged to your user fiinancial account. ...

  3. How to Request & Access Beam Time | Stanford Synchrotron Radiation

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

    Lightsource How to Request & Access Beam Time Step 1: Submit a proposal that summarizes proposed research plans. Step 2: Submit beam time requests. Step 3: Review & accept beam time allocations. Instructions for users allocated beam time on SSRL X-ray/VUV beam lines. Accept Beam Time & Submit Support Request Registration & Assistance User Agreements User Financial Accounts, Supplies, Gases, Domestic & International Shipments User Computer Accounts User Safety Preparing

  4. Apply for Beam Time | Advanced Photon Source

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

    All About Proposals Users Home Apply for Beam Time Deadlines Proposal Types Concepts, Definitions, and Help My APS Portal My APS Portal Apply for Beam Time Next Proposal Deadline...

  5. User Information

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

    User Information User Information Print ALSHub User Portal User Guide A step-by-step guide for users about how to apply and prepare for beam time at the ALS. Experiment Safety Upon receiving beam time, complete an Experiment Safety Sheet Prospective Users Users from Industry Contacts for Users User Policy Data Management Users' Executive Committee (UEC) User Meeting

  6. Beam Stability Complaint Form

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

    For New Users For Current Users For Administrators MX Users APS User Portal APS Data Management Practices Find a Beamline Apply for Beam Time ESAF Contacts Calendars User...

  7. User Services

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

    Proposals for beam time User publications database Guest logistics and parking Loan of laptop, stealth phone and projector Logisitics for the annual users' meeting ALS Experiment...

  8. A real-time intercepting beam-profile monitor for a medical cyclotron

    SciTech Connect (OSTI)

    Hendriks, C.; Uittenbosch, T.; Cameron, D.; Kellogg, S.; Gray, D.; Buckley, K.; Schaffer, P.; Verzilov, V.; Hoehr, C.

    2013-11-15

    There is a lack of real-time continuous beam-diagnostic tools for medical cyclotrons due to high power deposition during proton irradiation. To overcome this limitation, we have developed a profile monitor that is capable of providing continuous feedback about beam shape and current in real time while it is inserted in the beam path. This enables users to optimize the beam profile and observe fluctuations in the beam over time with periodic insertion of the monitor.

  9. User Guide

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

    Upon receiving beam time, complete an Experiment Safety Sheet. 5. Get Access to Work Onsite 6. Complete Online Safety Training 7. Utilize Available Resources 8. Complete the User ...

  10. User Guide

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

    User Guide Print 1. Register with the ALS Create an account on ALSHub-the ALS user portal. 2. Apply for Beam Time 3. Establish a User Agreement 4. Comply with Experiment Safety Requirements Upon receiving beam time, complete an Experiment Safety Sheet. 5. Get Access to Work Onsite 6. Complete Online Safety Training 7. Utilize Available Resources 8. Complete the User Satisfaction Survey 9. Report Publications, Awards, Talks, Acknowledging Work at ALS

  11. User Guide

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

    User Guide Print 1. Register with the ALS Create an account on ALSHub-the ALS user portal. 2. Apply for Beam Time 3. Establish a User Agreement 4. Comply with Experiment Safety Requirements Upon receiving beam time, complete an Experiment Safety Sheet. 5. Get Access to Work Onsite 6. Complete Online Safety Training 7. Utilize Available Resources 8. Complete the User Satisfaction Survey 9. Report Publications, Awards, Talks, Acknowledging Work at ALS

  12. User Guide

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

    Guide User Guide Print 1. Register with the ALS Create an account on ALSHub-the ALS user portal. 2. Apply for Beam Time 3. Establish a User Agreement 4. Comply with Experiment Safety Requirements Upon receiving beam time, complete an Experiment Safety Sheet. 5. Get Access to Work Onsite 6. Complete Online Safety Training 7. Utilize Available Resources 8. Complete the User Satisfaction Survey 9. Report Publications, Awards, Talks, Acknowledging Work at ALS

  13. LANSCE | Users

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

    Rosen Scholar Rosen Prize Users dotline User Information Planning for Arrival: Contact the User Office several weeks before arriving at LANSCE. The LANSCE User Office will assist you in preparing for your visit to LANSCE. Plan to arrive one day prior to your scheduled beam time. User Office Contacts Division Office Ph: 505.667.5051 Lujan Center User Office lujan-uo@lanl.gov WNR User Program Administrator Tanya Herrera Ph: 505.667.6797 User Office Main Desk Email: lansce-user-office@lanl.gov Ph:

  14. Monitoring external beam radiotherapy using real-time beam visualization

    SciTech Connect (OSTI)

    Jenkins, Cesare H.; Naczynski, Dominik J.; Yu, Shu-Jung S.; Xing, Lei

    2015-01-15

    Purpose: To characterize the performance of a novel radiation therapy monitoring technique that utilizes a flexible scintillating film, common optical detectors, and image processing algorithms for real-time beam visualization (RT-BV). Methods: Scintillating films were formed by mixing Gd{sub 2}O{sub 2}S:Tb (GOS) with silicone and casting the mixture at room temperature. The films were placed in the path of therapeutic beams generated by medical linear accelerators (LINAC). The emitted light was subsequently captured using a CMOS digital camera. Image processing algorithms were used to extract the intensity, shape, and location of the radiation field at various beam energies, dose rates, and collimator locations. The measurement results were compared with known collimator settings to validate the performance of the imaging system. Results: The RT-BV system achieved a sufficient contrast-to-noise ratio to enable real-time monitoring of the LINAC beam at 20 fps with normal ambient lighting in the LINAC room. The RT-BV system successfully identified collimator movements with sub-millimeter resolution. Conclusions: The RT-BV system is capable of localizing radiation therapy beams with sub-millimeter precision and tracking beam movement at video-rate exposure.

  15. Time Structure of the LANSCE Beam

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

    The proton beam is delivered to Target-1 after passing through the proton storage ring (PSR). The time it takes an 800 MeV proton to travel one circuit of the PSR is 360 ns. The...

  16. Short rise time intense electron beam generator

    DOE Patents [OSTI]

    Olson, Craig L.

    1987-01-01

    A generator for producing an intense relativistic electron beam having a subnanosecond current rise time includes a conventional generator of intense relativistic electrons feeding into a short electrically conductive drift tube including a cavity containing a working gas at a low enough pressure to prevent the input beam from significantly ionizing the working gas. Ionizing means such as a laser simultaneously ionize the entire volume of working gas in the cavity to generate an output beam having a rise time less than one nanosecond.

  17. Short rise time intense electron beam generator

    DOE Patents [OSTI]

    Olson, C.L.

    1984-03-16

    A generator for producing an intense relativisitc electron beam having a subnanosecond current rise time includes a conventional generator of intense relativistic electrons feeding into a short electrically conductive drift tube including a cavity containing a working gas at a low enough pressure to prevent the input beam from significantly ionizing the working gas. Ionizing means such as a laser simultaneously ionize the entire volume of working gas in the cavity to generate an output beam having a rise time less than one nanosecond.

  18. Prospective Users

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

    the ALS with all the technical, experiment, and administrative support they require for successful and efficient use of beam time. The kinds of access for users, i.e., General...

  19. LANSCE | User Resources

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

    From the initial proposal process to the completion of the experiment, LANSCE provides its users with resources critical to their experiements and their experience. Lujan Resources pRad Resources WNR Resources Submit a proposal for beam time Visit Registration Schedules Experiment Reports User Satisfaction Survey Reviews Submit a proposal for beam time Visit Registration Schedules Experiment Reports User Satisfaction Survey Reviews Submit a proposal for beam time Visit Registration Schedules

  20. Industrial Users

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

    Industrial Users The facility has been used for more than a decade by a virtual Who's Who of the semiconductor industry to simulate the potential failures posed by cosmic-ray-induced neutrons upon miniature electronic devices, such as chips that help control aircraft or complex integrated circuits in automobiles. Industrial User Information The Neutron and Nuclear Science (WNR) Facility welcomes proposals for beam time experiments from industry users. Proprietary and non-proprietary industrial

  1. U-170: Apple QuickTime Multiple Flaws Let Remote Users Execute Arbitrary Code

    Broader source: Energy.gov [DOE]

    Multiple vulnerabilities were reported in Apple QuickTime. A remote user can cause arbitrary code to be executed on the target user's system.

  2. Method and apparatus for timing of laser beams in a multiple laser beam fusion system

    DOE Patents [OSTI]

    Eastman, Jay M.; Miller, Theodore L.

    1981-01-01

    The optical path lengths of a plurality of comparison laser beams directed to impinge upon a common target from different directions are compared to that of a master laser beam by using an optical heterodyne interferometric detection technique. The technique consists of frequency shifting the master laser beam and combining the master beam with a first one of the comparison laser beams to produce a time-varying heterodyne interference pattern which is detected by a photo-detector to produce an AC electrical signal indicative of the difference in the optical path lengths of the two beams which were combined. The optical path length of this first comparison laser beam is adjusted to compensate for the detected difference in the optical path lengths of the two beams. The optical path lengths of all of the comparison laser beams are made equal to the optical path length of the master laser beam by repeating the optical path length adjustment process for each of the comparison laser beams. In this manner, the comparison laser beams are synchronized or timed to arrive at the target within .+-.1.times.10.sup.-12 second of each other.

  3. V-020: Apple QuickTime Multiple Flaws Let Remote Users Execute...

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

    0: Apple QuickTime Multiple Flaws Let Remote Users Execute Arbitrary Code V-020: Apple QuickTime Multiple Flaws Let Remote Users Execute Arbitrary Code November 9, 2012 - 6:00am...

  4. Users

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

    ... offered at CAMD's annual user meeting) or by retaking the online CAMD Radiation Safety Test. If your training has expired your access card will not allow access to the ...

  5. Mining User Dwell Time for Personalized Web Search Re-Ranking

    SciTech Connect (OSTI)

    Xu, Songhua; Jiang, Hao; Lau, Francis

    2011-01-01

    We propose a personalized re-ranking algorithm through mining user dwell times derived from a user's previously online reading or browsing activities. We acquire document level user dwell times via a customized web browser, from which we then infer conceptword level user dwell times in order to understand a user's personal interest. According to the estimated concept word level user dwell times, our algorithm can estimate a user's potential dwell time over a new document, based on which personalized webpage re-ranking can be carried out. We compare the rankings produced by our algorithm with rankings generated by popular commercial search engines and a recently proposed personalized ranking algorithm. The results clearly show the superiority of our method. In this paper, we propose a new personalized webpage ranking algorithmthrough mining dwell times of a user. We introduce a quantitative model to derive concept word level user dwell times from the observed document level user dwell times. Once we have inferred a user's interest over the set of concept words the user has encountered in previous readings, we can then predict the user's potential dwell time over a new document. Such predicted user dwell time allows us to carry out personalized webpage re-ranking. To explore the effectiveness of our algorithm, we measured the performance of our algorithm under two conditions - one with a relatively limited amount of user dwell time data and the other with a doubled amount. Both evaluation cases put our algorithm for generating personalized webpage rankings to satisfy a user's personal preference ahead of those by Google, Yahoo!, and Bing, as well as a recent personalized webpage ranking algorithm.

  6. A picosecond beam-timing system for the OMEGA laser

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

    Donaldson, W. R.; Katz, J.; Huff, R.; Hill, E. M.; Kelly, J. H.; Kwaitkowski, J.; Brannon, R. B.; Boni, R.

    2016-05-27

    Here, a timing system is demonstrated for the OMEGA Laser System that guarantees all 60 beams will arrive on target simultaneously with a root mean square variability of 4 ps. The system relies on placing a scattering sphere at the target position to couple the UV light from each beam into a single photodetector.

  7. Beam Time Request - Radiation Effects Facility / Cyclotron Institute /

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

    Texas A&M University Beam-Time Request Information about scheduling beam-time: HOURLY RATE: Contact Henry Clark, 979-845-1411 or clark@comp.tamu.edu MINIMUM BILLING: There is an eight hour minimum billing, after that you are billed for time used including tuning time. CANCELLATION POLICY: If you schedule cyclotron time and need to cancel at a later date, you must notify Henry Clark two weeks prior to the start date to avoid the cancellation fee. The fee is in the amount of one half of

  8. MyNERSC Gives Users Easier Access to Data, Jobs, Wait Times

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

    MyNERSC Gives NERSC Users Easy Access to Data, Projects MyNERSC Gives Users Easier Access to Data, Jobs, Wait Times April 6, 2015 MyNERSC, a web-based portal that provides NERSC users with real-time information on their jobs, disk usage, allocations and queue wait times, is garnering rave reviews following recent upgrades that have broadened its functionality and streamlined its ease of use. "The new interface at https://my.nersc.gov/ is AWESOME!" said one NERSC user following the

  9. Inverse time-of-flight spectrometer for beam plasma research

    SciTech Connect (OSTI)

    Yushkov, Yu. G., E-mail: yuyushkov@gmail.com; Zolotukhin, D. B.; Tyunkov, A. V. [Tomsk State University of Control Systems and Radioelectronics, 40 Lenin Ave., Tomsk 634050 (Russian Federation); Oks, E. M. [Tomsk State University of Control Systems and Radioelectronics, 40 Lenin Ave., Tomsk 634050 (Russian Federation); Institute of High Current Electronics SB RAS, 2/3, Akademichesky Ave., Tomsk 634055 (Russian Federation); Savkin, K. P. [Institute of High Current Electronics SB RAS, 2/3, Akademichesky Ave., Tomsk 634055 (Russian Federation)

    2014-08-15

    The paper describes the design and principle of operation of an inverse time-of-flight spectrometer for research in the plasma produced by an electron beam in the forevacuum pressure range (520 Pa). In the spectrometer, the deflecting plates as well as the drift tube and the primary ion beam measuring system are at high potential with respect to ground. This provides the possibility to measure the mass-charge constitution of the plasma created by a continuous electron beam with a current of up to 300 mA and electron energy of up to 20 keV at forevacuum pressures in the chamber placed at ground potential. Research results on the mass-charge state of the beam plasma are presented and analyzed.

  10. Radial electron-beam-breakup transit-time oscillator

    DOE Patents [OSTI]

    Kwan, Thomas J. T.; Mostrom, Michael A.

    1998-01-01

    A radial electron-beam-breakup transit-time oscillator (RBTO) provides a compact high power microwave generator. The RBTO includes a coaxial vacuum transmission line having an outer conductor and an inner conductor. The inner conductor defines an annular cavity with dimensions effective to support an electromagnetic field in a TEM.sub.00m mode. A radial field emission cathode is formed on the outer conductor for providing an electron beam directed toward the annular cavity electrode. Microwave energy is then extracted from the annular cavity electrode.

  11. Ultrafast Time-Resolved Electron Diffraction with Megavolt Electron Beams

    SciTech Connect (OSTI)

    Hastings, J.B.; Rudakov, F.M.; Dowell, D.H.; Schmerge, J.F.; Cardoza, J.D.; Castro, J.M.; Gierman, S.M.; Loos, H.; Weber, P.M.; /Brown U.

    2006-10-24

    An rf photocathode electron gun is used as an electron source for ultrafast time-resolved pump-probe electron diffraction. We observed single-shot diffraction patterns from a 160 nm Al foil using the 5.4 MeV electron beam from the Gun Test Facility at the Stanford Linear Accelerator. Excellent agreement with simulations suggests that single-shot diffraction experiments with a time resolution approaching 100 fs are possible.

  12. General User Proposals (GUPs)

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

    General User Proposals (GUPs) General User Proposals (GUPs) Print Tuesday, 01 June 2010 09:36 General Users are granted beam time through a peer review proposal process. They may use beamlines and endstations provided by the ALS or the Participating Research Team (PRT) that operates the beamline. Before Submitting a Proposal Review the ALS Beamlines Directory to learn about the research capabilities of individual beamlines at the ALS. Contact the beamline scientist or the local contact listed in

  13. MyNERSC Gives Users Easier Access to Data, Jobs, Wait Times

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

    MyNERSC Gives Users Easier Access to Data, Jobs, Wait Times April 6, 2015 MyNERSC, a web-b... MyNERSC was originally developed 10 years ago, and in 2014 both the web and mobile ...

  14. As you prepare for your upcoming beam time, please be aware that construction is planned to update SLAC Gate 17 with RFID proximity card access hardware and to change the stairs next to the Security hut to an ADA compliant ramp. Please forward this to your proposal collaborators (and ensure that all users have registered and completed training before they arrive). This construction is scheduled to begin Tuesday 5/28 and be completed by 6/28. During this construction, access to the LCLS and SSRL buildings and experimental facilities will be provided as follows: VEHICLES ONLY THROUGH GATE 17 5/28-6/28 0600-1530 (6 am-3:30 pm) Construction Zone. Only VEHICLE traffic will be allowed access through Gate 17 and flagman will provide traffic control. 1530-1800 (3:30-6:00 pm) Assumes construction will have stopped for the day; both traffic lanes will be open for vehicles. 1800-0600 (6 pm-6 am) As now, Gate 17 will be closed or barricaded overnight. PEDESTRIANS ONLY THROUGH GATE 16 5/28-6/28 The pedestrian turnstile at Gate 16A will not change. The turnstile is available for pedestrian use 24/7 as long as the individual has a valid SLAC ID badge (and there is a guard at Gate 30 to 'buzz' them through). 0700-1600 (6 am-4 pm) Pedestrians who would normally walk through Gate 17 will instead follow the detour to Gate 16 swing gate which will be unlocked and staffed by Security. A valid SLAC ID badge is needed to enter; new users without IDs will be allowed to proceed for check-in and badging after confirmation with the User Research Administration Office (see detour map attached). FYI - After the construction is completed and proximity card readers are fully functional, users and staff will enter Gates 17 and 30 using an activated RFID proximity card. More details to follow.

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

    Automated Proximity Access at Gate 17 and Sector 30 New SLAC ID badges with embedded RFID are used to activate these gates and for off-hours access at the main entrance off Sand Hill Road as well as Alpine Road (gates will be accessible 24/7) . New user badges include this proximity gate activation feature, but older photo IDs need to be updated. Users are advised to register, complete training and contact the User Research Administration (URA) office before arrival for beam time to help

  15. Time-delayed directional beam phased array antenna

    DOE Patents [OSTI]

    Fund, Douglas Eugene; Cable, John William; Cecil, Tony Myron

    2004-10-19

    An antenna comprising a phased array of quadrifilar helix or other multifilar antenna elements and a time-delaying feed network adapted to feed the elements. The feed network can employ a plurality of coaxial cables that physically bridge a microstrip feed circuitry to feed power signals to the elements. The cables provide an incremental time delay which is related to their physical lengths, such that replacing cables having a first set of lengths with cables having a second set of lengths functions to change the time delay and shift or steer the antenna's main beam. Alternatively, the coaxial cables may be replaced with a programmable signal processor unit adapted to introduce the time delay using signal processing techniques applied to the power signals.

  16. Facility for Rare Isotope Beams: The Journey Has Begun on DOE's latest Scientific User Facility

    Broader source: Energy.gov [DOE]

    After many years of planning, ground was officially broken on the Facility for Rare Isotope Beams (FRIB) in a ceremony held at the construction site on Michigan State University’s campus.

  17. Nuclear Physics: Experiment Research - Call for Beam Time Requests

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

    Free-Electron Laser (FEL) Medical Imaging Physics Topics Campaigns Meetings Recent Talks ... Jefferson Lab Users Group From : Nuclear Physics Experiment Scheduling Committee Subject: ...

  18. General User Proposals (GUPs)

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

    General User Proposals (GUPs) Print General Users are granted beam time through a peer review proposal process. They may use beamlines and endstations provided by the ALS or the Participating Research Team (PRT) that operates the beamline. Before Submitting a Proposal Review the ALS Beamlines Directory to learn about the research capabilities of individual beamlines at the ALS. Contact the beamline scientist or the local contact listed in the tables, for additional information about the

  19. LANSCE | User Resources | Schedules

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

    Schedules You will be notified of your experiment schedule at least 3-6 weeks prior to your start date. Two (2) weeks post-review, beam-time will be scheduled by the Instrument Scientist in consultation with the user. Three (3) weeks post review, schedule letters are sent to the Principal Investigator. After scheduling experiments, the LANSCE User Office will contact you to determine and schedule applicable training, assist with travel arrangements, initiate and required foreign national access

  20. New Users - 88-Inch Cyclotron

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

    New Users Welcome! Congratulations on getting your experiment approved and scheduled at the 88-Inch Cyclotron. This section details how to register with LBNL, acquire gate access and parking, and take the required safety courses to run an experiment at the 88-Inch Cyclotron. 6 Weeks Ahead Set up a user agreement between your organization and LBNL, if there is not already one in place. Recharge customers (those who pay for beam time) must have a user agreement, purchase order, and an advance

  1. T-654: Apple QuickTime Multiple Bugs Let Remote Users Execute Arbitrary

    Broader source: Energy.gov [DOE]

    A remote user can create a specially crafted file that, when loaded by the target user, will execute arbitrary code on the target system. The code will run with the privileges of the target user.

  2. 1 billion times brighter than the sun: Will Jeff Lab's beam lead...

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

    billion times brighter than the sun: Will Jeff Lab's beam lead to new discoveries? (Daily Press) External Link: http:articles.dailypress.com2011-01-17news...

  3. Time domain analysis of a gyrotron traveling wave amplifier with misaligned electron beam

    SciTech Connect (OSTI)

    Wang, Qiushi Peng, Shuyuan; Luo, Jirun

    2014-08-15

    This article develops a time-domain theory to study the beam-wave interaction in gyrotron traveling wave amplifier (gyro-TWA) with a misaligned electron beam. The effects of beam misalignment on the TE{sub 01} mode gyro-TWA operating at the fundamental are discussed. Numerical results show that the effect of misalignment is less obvious when the input power is larger, and the influences of misalignment on the stable gain and the stable time are basically opposite.

  4. Method and apparatus for real time imaging and monitoring of radiotherapy beams

    DOE Patents [OSTI]

    Majewski, Stanislaw; Proffitt, James; Macey, Daniel J.; Weisenberger, Andrew G.

    2011-11-01

    A method and apparatus for real time imaging and monitoring of radiation therapy beams is designed to preferentially distinguish and image low energy radiation from high energy secondary radiation emitted from a target as the result of therapeutic beam deposition. A detector having low sensitivity to high energy photons combined with a collimator designed to dynamically image in the region of the therapeutic beam target is used.

  5. Fidelity of a Time-Resolved Imaging Diagnostic for Electron Beam Profiles

    SciTech Connect (OSTI)

    Frayer, Daniel; Ekdahl, Carl A.; Johnson, Douglas

    2014-10-01

    An optical tomographic diagnostic instrument has been fielded at the Dual-Axis Radiographic Hydrodynamic Test Facility at Los Alamos National Laboratory. Four optical lines of sight create projections of an image of an electron beam on a Cerenkov target, which are relayed via optical fiber to streak cameras. From these projections, a reconstruction algorithm creates time histories of the beams cross section. The instrument was fielded during and after facility commissioning, and tomographic reconstructions reported beam parameters. Results from reconstructions and analysis are noted.

  6. Call for General User Proposals - Upcoming Deadline

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

    Call for General User Proposals - Upcoming Deadline Call for General User Proposals - Upcoming Deadline Print The User Office is accepting new General User Proposals (GUPs) from scientists who wish to conduct research at the ALS in the 2016-2 July-Dec cycle. PROPOSAL SUBMISSION DEADLINE: March 2, 2016 Please log in to ALSHub to submit a new GUP or to make a Beam Time Request (BTR) on an existing active proposal. Users are reminded that they need to have an ALSHub account to submit proposals, and

  7. Test beam studies of silicon timing for use in calorimetry

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

    Apresyan, A.; Bolla, G.; Bornheim, A.; Kim, H.; Los, S.; Pena, C.; Ramberg, E.; Ronzhin, A.; Spiropulu, M.; Xie, S.

    2016-04-12

    The high luminosity upgrade of the Large Hadron Collider (HL-LHC) at CERN is expected to provide instantaneous luminosities of 5 X 1034 cm–2 s–1. The high luminosities expected at the HL-LHC will be accompanied by a factor of 5 to 10 more pileup compared with LHC conditions in 2015, causing general confusion for particle identification and event reconstruction. Precision timing allows to extend calorimetric measurements into such a high density environment by subtracting the energy deposits from pileup interactions. Calorimeters employing silicon as the active component have recently become a popular choice for the HL-LHC and future collider experiments whichmore » face very high radiation environments. In this article, we present studies of basic calorimetric and precision timing measurements using a prototype composed of tungsten absorber and silicon sensor as the active medium. Lastly, we show that for the bulk of electromagnetic showers induced by electrons in the range of 20 GeV to 30 GeV, we can achieve time resolutions better than 25 ps per single pad sensor.« less

  8. Time-dependent simulation of prebunched one and two-beam free electron laser

    SciTech Connect (OSTI)

    Mirian, N. S.; Maraghechi, B.

    2014-04-15

    A numerical simulation in one-dimension is conducted to study the slippage effects on prebunched free electron laser. A technique for the simulation of time dependent free electron lasers (FEL) to model the slippage effects is introduced, and the slowly varying envelope approximation in both z and t is used to illustrate the temporal behaviour in the prebunched FEL. Slippage effect on prebunched two-beam FEL is compared with the one-beam modeling. The evaluation of the radiation pulse energy, thermal and phase distribution, and radiation pulse shape in one-beam and two-beam modeling is studied. It was shown that the performance is considerably undermined when the slippage time is comparable to the pulse duration. However, prebunching reduces the slippage. Prebunching also leads to the radiation pulse with a single smooth spike.

  9. U-170: Apple QuickTime Multiple Flaws Let Remote Users Execute...

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

    overflow CVE-2012-0670. A specially crafted '.pict' file can trigger a memory corruption error CVE-2012-0671. Impact: A remote user can create a file that, when loaded by...

  10. 27th Annual SSRL Users' Meeting -- Lytle Award

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

    3rd Annual Farrel W. Lytle Award -- Nominations Due October 2 The SSRL Users' Organization Executive Committee has established this award to promote important technical or scientific accomplishments in synchrotron radiation-based science and to foster collaboration and efficient use of beam time among users and staff at SSRL. All SSRL users and staff are eligible for this award. The Lytle Award consists of a plaque that is displayed in the User Research Administration Office at SSRL and $1000.

  11. Out-of-Time Beam Extinction in the MU2E Experiment

    SciTech Connect (OSTI)

    Prebys, E. J.; Werkema, S.

    2015-06-01

    The Mu2e Experiment at Fermilab will search for the conversion of a muon to an electron in the field of an atomic nucleus with unprecedented sensitivity. The experiment requires a beam consisting of proton bunches 250 ns FW long, separated by 1.7 $\\mu$ sec, with no out-of-time protons at the $10^{10}$ fractional level. Satisfying this "extinction" requirement is very challenging. The formation of the bunches is expected to result in an extinction on the order of $10^5$. The remaining extinction will be accomplished by a system of resonant magnets and collimators, configured such that only in-time beam is delivered to the experiment. Our simulations show that the total extinction achievable by the system is on the order of $10^{12}$, with an efficiency for transmitting in-time beam of 99.6%.

  12. LANSCE | Training Office | User Training

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

    phone: 505.665.1010 mesa header Beam Status Accelerator Ops (Internal) Operating Schedule Long Range Operating Schedule User Resources User Agreements Proposals Visit Registration Schedules Experiment Reports User Satisfaction Survey Reviews Users User Office User Program LANSCE User Group Rosen Scholar Rosen Prize News & Multimedia News Multimedia Events Profiles Highlights Seminars Activity Reports The Pulse User Program Headlines About LANSCE History Leadership LINAC Outreach Affiliations

  13. LANSCE | Users | User Office

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

    User Office LANSCE User Office and Visitor Center The LANSCE User Office is responsible for coordinating the users with LANSCE instrument scientist and the facility. Users contact the User Office weeks before they arrive at the LANSCE Visitor Center at Technical Area 53. Among their many responsibilities, the team issues the call for proposals, coordinates proposal experiment schedules, directs users to the training center, issues badges and dosimeters, helps to arrange tours of the facilities,

  14. 1 billion times brighter than the sun: Will Jeff Lab's beam lead to new

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

    discoveries? (Daily Press) | Jefferson Lab billion times brighter than the sun: Will Jeff Lab's beam lead to new discoveries? (Daily Press) External Link: http://articles.dailypress.com/2011-01-17/news/dp-nws-cp-jlab-laser-20110116_1_s... By jlab_admin on Thu, 2011-01-20 00:00

  15. TH-C-12A-12: Veritas: An Open Source Tool to Facilitate User Interaction with TrueBeam Developer Mode

    SciTech Connect (OSTI)

    Mishra, P; Lewis, J; Etmektzoglou, T; Svatos, M

    2014-06-15

    Purpose: To address the challenges of creating delivery trajectories and imaging sequences with TrueBeam Developer Mode, a new open-source graphical XML builder, Veritas, has been developed, tested and made freely available. Veritas eliminates most of the need to understand the underlying schema and write XML scripts, by providing a graphical menu for each control point specifying the state of 30 mechanical/dose axes. All capabilities of Developer Mode are accessible in Veritas. Methods: Veritas was designed using QT Designer, a ‘what-you-is-what-you-get’ (WYSIWIG) tool for building graphical user interfaces (GUI). Different components of the GUI are integrated using QT's signals and slots mechanism. Functionalities are added using PySide, an open source, cross platform Python binding for the QT framework. The XML code generated is immediately visible, making it an interactive learning tool. A user starts from an anonymized DICOM file or XML example and introduces delivery modifications, or begins their experiment from scratch, then uses the GUI to modify control points as desired. The software automatically generates XML plans following the appropriate schema. Results: Veritas was tested by generating and delivering two XML plans at Brigham and Women's Hospital. The first example was created to irradiate the letter ‘B’ with a narrow MV beam using dynamic couch movements. The second was created to acquire 4D CBCT projections for four minutes. The delivery of the letter ‘B’ was observed using a 2D array of ionization chambers. Both deliveries were generated quickly in Veritas by non-expert Developer Mode users. Conclusion: We introduced a new open source tool Veritas for generating XML plans (delivery trajectories and imaging sequences). Veritas makes Developer Mode more accessible by reducing the learning curve for quick translation of research ideas into XML plans. Veritas is an open source initiative, creating the possibility for future developments

  16. Characterization of beam dynamics in the APS injector rings using time-resolved imaging techniques

    SciTech Connect (OSTI)

    Yang, B.X.; Lumpkin, A.H.; Borland, M.

    1997-06-01

    Images taken with streak cameras and gated intensified cameras with both time (longitudinal) and spatial (transverse) resolution reveal a wealth of information about circular accelerators. The authors illustrate a novel technique by a sequence of dual-sweep streak camera images taken at a high dispersion location in the booster synchrotron, where the horizontal coordinate is strongly correlated with the particle energy and the {open_quotes}top-view{close_quotes} of the beam gives a good approximation to the particle density distribution in the longitudinal phase space. A sequence of top-view images taken fight after injection clearly shows the beam dynamics in the phase space. We report another example from the positron accumulator ring for the characterization of its beam compression bunching with the 12th harmonic rf.

  17. LANSCE | Users | User Program

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

    LANSCE User Program LANSCE's User Program ensures the research it oversees represents the cutting edge of nuclear and materials science and technology. The User Program plays a key role in training the next generation of top scientists, attracting the best graduate students, postdoctoral researchers, and early-career scientists (defined as those less than 40-years old). The User Program typically begins with the first call for proposals and run until the end of the run-cycle. The User-Program

  18. LANSCE | User Resources | Experiment Reports

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

    Experiment Reports For experiment report guidance, examples or a blank form, select one of the following .pdf files: Instructions.pdf Experiment Report Form.pdf Send reports to the LANSCE User Office. Reports are due three months after you receive beam time. If you didn't complete a User Survey during your visit, please do so when you complete your Experiment Report. The responses to the survey are used by LANSCE to identify and address issues and are also reported to the agencies providing

  19. FNAL Users Meeting Morgan Wascko

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

    FNAL Users Meeting Morgan Wascko 3 June, 2004 LSU Slide 1 Quo Vadis, MiniBooNE? Context ν oscillation landscape LSND Implications What if the signal is confirmed? Latest MiniBooNE news Beam and Booster performance Detector performance calibration sources optical modeling of the oil detected neutrino rate vs. time Neutrino data flux, cross section progress Updated Oscillation Sensitivity based on measured neutrino rates during first year of data New physics? Many answers for many questions

  20. Call for General User Proposals - Sept. 7 Deadline

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

    Call for General User Proposals - Sept. 7 Deadline Call for General User Proposals - Sept. 7 Deadline Print The User Office is accepting new General User Proposals (GUPs) from scientists who wish to conduct research at the ALS during the 2017-1 Jan-Jun cycle. PROPOSAL SUBMISSION DEADLINE: September 7, 2016 Please log in to ALSHub to submit a new GUP or to make a beam time request (BTR) on an existing active proposal. Users are reminded that they need to have an ALSHub account to submit proposals

  1. User Services

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

    Home Contact User Services Print The User Services Group is available to aid ALS users before they arrive, while they are here, and after they leave. User Office Experiment...

  2. Using time separation of signals to obtain independent proton and antiproton beam position measurements around the Tevatron

    SciTech Connect (OSTI)

    Webber, R.; /Fermilab

    2005-05-01

    Independent position measurement of the counter-circulating proton and antiproton beams in the Tevatron, never supported by the original Tevatron Beam Position Monitor (BPM) system, presents a challenge to upgrading that system. This paper discusses the possibilities and complications of using time separation of proton and antiproton signals at the numerous BPM locations and for the dynamic Tevatron operating conditions. Results of measurements using one such method are presented.

  3. Call for General User Proposals - Sept. 7 Deadline

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

    Call for General User Proposals - Sept. 7 Deadline Print The User Office is accepting new General User Proposals (GUPs) from scientists who wish to conduct research at the ALS during the 2017-1 Jan-Jun cycle. PROPOSAL SUBMISSION DEADLINE: September 7, 2016 Please log in to ALSHub to submit a new GUP or to make a beam time request (BTR) on an existing active proposal. Users are reminded that they need to have an ALSHub account to submit proposals and that creating an account may take 1-2 business

  4. Time

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

    3 4 5 6 7 8 9 10 Time with respect to the BNB Trigger Time [µs] 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 Fractional Flash Count per 0.15 µs with respect to Cosmic Background Measured Cosmic Rate (Beam-Off) BNB Trigger Data (Beam-On) [4.51E18 POT]

  5. Time

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

    10 15 20 Time with respect to the NuMI Trigger Time [µs] 0.9 1.0 1.1 1.2 1.3 1.4 1.5 Fractional Flash Count per 0.5 µs with respect to Cosmic Background Measured Cosmic Rate (Beam-Off) NuMI Trigger Data (Beam-On) [4.83E18 POT]

  6. Energy spread and time structure of ion beams extracted from the ReA-EBIT rare isotope charge breeder

    SciTech Connect (OSTI)

    Baumann, Thomas M.; Lapierre, Alain; Schwarz, Stefan; Kittimanapun, Kritsada; Bollen, Georg

    2015-01-09

    The ReA re-accelerator of the National Superconducting Cyclotron Laboratory at Michigan State University utilizes an Electron Beam Ion Trap (EBIT) for charge breeding thermalized rare isotope beams. Recent commissioning measurements have been performed to characterize the performance of this EBIT. The energy spread of extracted highly charged ion beams was measured to be about 0.3% of the total beam energy. From this, the temperature of the ion ensemble in the trap is calculated to be kT{sub q}/q?=?31eV for O{sup 7+}, while it is kT{sub q}/q?=?25eV for K{sup 15+}. In addition initial results are presented for two extraction schemes developed to spread highly charged ion pulses in time.

  7. Facile time-of-flight methods for characterizing pulsed superfluid helium droplet beams

    SciTech Connect (OSTI)

    He, Yunteng; Zhang, Jie; Li, Yang; Freund, William M.; Kong, Wei

    2015-08-15

    We present two facile time-of-flight (TOF) methods of detecting superfluid helium droplets and droplets with neutral dopants. Without an electron gun and with only a heated filament and pulsed electrodes, the electron impact ionization TOF mass spectrometer can resolve ionized helium clusters such as He{sub 2}{sup +} and He{sub 4}{sup +}, which are signatures of superfluid helium droplets. Without ionizing any helium atoms, multiphoton non-resonant laser ionization of CCl{sub 4} doped in superfluid helium droplets at 266 nm generates complex cluster ions of dopant fragments with helium atoms, including (He){sub n}C{sup +}, (He){sub n}Cl{sup +}, and (He){sub n}CCl{sup +}. Using both methods, we have characterized our cryogenic pulsed valve—the Even-Lavie valve. We have observed a primary pulse with larger helium droplets traveling at a slower speed and a rebound pulse with smaller droplets at a faster speed. In addition, the pickup efficiency of dopant is higher for the primary pulse when the nozzle temperature is higher than 13 K, and the total time duration of the doped droplet pulse is only on the order of 20 μs. These results stress the importance of fast and easy characterization of the droplet beam for sensitive measurements such as electron diffraction of doped droplets.

  8. User Facilities

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

    User Facilities User Facilities User facility agreements allow Los Alamos partners and other entities to conduct research at our unique facilities. In 2011, LANL hosted more than 1,200 users at CINT, LANSCE, and NHMFL. Users came from across the DOE complex, from international academia, and from industrial companies from 45 states across the U.S. Unique world-class user facilities foster rich research opportunities Through its technology transfer efforts, LANL can implement user facility

  9. Hartmann-Shack wave front measurements for real time determination of laser beam propagation parameters

    SciTech Connect (OSTI)

    Schaefer, B.; Luebbecke, M.; Mann, K.

    2006-05-15

    The suitability of the Hartmann-Shack technique for the determination of the propagation parameters of a laser beam is faced against the well known caustic approach according to the ISO 11146 standard. A He-Ne laser (543 nm) was chosen as test beam, both in its fundamental mode as well as after intentional distortion, introducing a moderate amount of spherical aberration. Results are given for the most important beam parameters M{sup 2}, divergence, and beam widths, indicating an agreement of better than 10% and for adapted beam diameter <5%. Furthermore, the theoretical background, pros and cons, as well as some features of the software implementation for the Hartmann-Shack sensor are briefly reviewed.

  10. General User Proposal Scores

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

    Proposal Scores Print Scoring Proposals are scored on a scale of 1 to 5, with 1 being the best score and 5 the worst. Reviewers are requested to use the following ranking schema: Must do High Priority Medium Priority Low priority Don't do Beam time is assigned based on each proposal's score in relation to all other proposals for a given beamline. For beamlines where beam time requests exceed available beam time, a cutoff score is assigned after which no beam time is allocated. Individual Beam

  11. Time of Decline in Sexual Function After External Beam Radiotherapy for Prostate Cancer

    SciTech Connect (OSTI)

    Siglin, Joshua; Kubicek, Gregory J.; Leiby, Benjamin; Valicenti, Richard K.

    2010-01-15

    Purpose: Erectile dysfunction is one of the most concerning toxicities for patients in the treatment of prostate cancer. The inconsistent evaluation of sexual function (SF) and limited follow-up data have necessitated additional study to clarify the rate and timing of erectile dysfunction after external beam radiotherapy (EBRT) for prostate cancer. Methods and Materials: A total of 143 men completed baseline data on SF before treatment and at the subsequent follow-up visits. A total of 1187 validated SF inventories were analyzed from the study participants. Multiple domains of SF (sex drive, erectile function, ejaculatory function, and overall satisfaction) were analyzed for <=8 years of follow-up. Results: The median follow-up was 4.03 years. The strongest predictor of SF after EBRT was SF before treatment. For all domains of SF, the only statistically significant decrease in function occurred in the first 24 months after EBRT. SF stabilized 2 years after treatment completion, with no statistically significant change in any area of SF >2 years after the end of EBRT. Conclusion: These data suggest that SF does not have a continuous decline after EBRT. Instead, SF decreases maximally within the first 24 months after EBRT, with no significant changes thereafter.

  12. User Services

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

    Section Sue Bailey This e-mail address is being protected from spambots. You need JavaScript enabled to view it User Services Group Leader Prospective users Proprietary users...

  13. ALS User Meeting Archives

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

    Meeting Archives Past User Meeting Programs, Workshops, and Awards Year David A. Shirley (Science) Klaus Halbach (Instrumentation) Tim Renner (Service) 2015 Program Workshops Wanli Yang, "For new concepts optimizing battery materials with the aid of soft x-ray microscopy." Hans Bechtel, Michael Martin, and Markus Raschke, "For the development of Synchrotron Infrared Nano Spectroscopy (SINS)." David Malone. "As the first person all 2400 ALS users contact for their beam

  14. SSRL 32nd Users' Meeting Oct 17 - 19, 2005

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

    8th Annual Farrel W. Lytle Award Farrel W. Lyttle The SSRL Users' Organization solicits nominations for the 2005 Farrel W. Lytle Award. This Award was established by the SSRL Organization Executive Committee to promote important technical or scientific accomplishments in synchrotron radiation-based science and to foster collaboration and efficient use of beam time among users and staff at SSRL. The Lytle Award consists of a certificate and $1000 (awardee names are added to a plaque displayed in

  15. Vacuum Performance and Beam Life Time in the PEP-II Storage Rings...

    Office of Scientific and Technical Information (OSTI)

    Visit OSTI to utilize additional information resources in energy science and technology. A ... had by now over two years of production running at high beam current and seen synchrotron ...

  16. Optical eye tracking system for real-time noninvasive tumor localization in external beam radiotherapy

    SciTech Connect (OSTI)

    Via, Riccardo Fassi, Aurora; Fattori, Giovanni; Fontana, Giulia; Pella, Andrea; Tagaste, Barbara; Ciocca, Mario; Riboldi, Marco; Baroni, Guido; Orecchia, Roberto

    2015-05-15

    Purpose: External beam radiotherapy currently represents an important therapeutic strategy for the treatment of intraocular tumors. Accurate target localization and efficient compensation of involuntary eye movements are crucial to avoid deviations in dose distribution with respect to the treatment plan. This paper describes an eye tracking system (ETS) based on noninvasive infrared video imaging. The system was designed for capturing the tridimensional (3D) ocular motion and provides an on-line estimation of intraocular lesions position based on a priori knowledge coming from volumetric imaging. Methods: Eye tracking is performed by localizing cornea and pupil centers on stereo images captured by two calibrated video cameras, exploiting eye reflections produced by infrared illumination. Additionally, torsional eye movements are detected by template matching in the iris region of eye images. This information allows estimating the 3D position and orientation of the eye by means of an eye local reference system. By combining ETS measurements with volumetric imaging for treatment planning [computed tomography (CT) and magnetic resonance (MR)], one is able to map the position of the lesion to be treated in local eye coordinates, thus enabling real-time tumor referencing during treatment setup and irradiation. Experimental tests on an eye phantom and seven healthy subjects were performed to assess ETS tracking accuracy. Results: Measurements on phantom showed an overall median accuracy within 0.16 mm and 0.40° for translations and rotations, respectively. Torsional movements were affected by 0.28° median uncertainty. On healthy subjects, the gaze direction error ranged between 0.19° and 0.82° at a median working distance of 29 cm. The median processing time of the eye tracking algorithm was 18.60 ms, thus allowing eye monitoring up to 50 Hz. Conclusions: A noninvasive ETS prototype was designed to perform real-time target localization and eye movement monitoring

  17. Registration of clinical volumes to beams-eye-view images for real-time tracking

    SciTech Connect (OSTI)

    Bryant, Jonathan H.; Rottmann, Joerg; Lewis, John H.; Mishra, Pankaj; Berbeco, Ross I.; Keall, Paul J.

    2014-12-15

    Purpose: The authors combine the registration of 2D beam’s eye view (BEV) images and 3D planning computed tomography (CT) images, with relative, markerless tumor tracking to provide automatic absolute tracking of physician defined volumes such as the gross tumor volume (GTV). Methods: During treatment of lung SBRT cases, BEV images were continuously acquired with an electronic portal imaging device (EPID) operating in cine mode. For absolute registration of physician-defined volumes, an intensity based 2D/3D registration to the planning CT was performed using the end-of-exhale (EoE) phase of the four dimensional computed tomography (4DCT). The volume was converted from Hounsfield units into electron density by a calibration curve and digitally reconstructed radiographs (DRRs) were generated for each beam geometry. Using normalized cross correlation between the DRR and an EoE BEV image, the best in-plane rigid transformation was found. The transformation was applied to physician-defined contours in the planning CT, mapping them into the EPID image domain. A robust multiregion method of relative markerless lung tumor tracking quantified deviations from the EoE position. Results: The success of 2D/3D registration was demonstrated at the EoE breathing phase. By registering at this phase and then employing a separate technique for relative tracking, the authors are able to successfully track target volumes in the BEV images throughout the entire treatment delivery. Conclusions: Through the combination of EPID/4DCT registration and relative tracking, a necessary step toward the clinical implementation of BEV tracking has been completed. The knowledge of tumor volumes relative to the treatment field is important for future applications like real-time motion management, adaptive radiotherapy, and delivered dose calculations.

  18. User Facilities

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

    User Facilities User Facilities A new research frontier awaits! Our door is open, and we thrive on mutually beneficial partnerships and collaborations that drive innovations and new technologies. Unique world-class user facilities foster rich research opportunities Through its technology transfer efforts, Los Alamos National Laboratory can implement user facility agreements that allow its partners and other entities to conduct research at many of its unique facilities. While our largest user

  19. BL 11-2 User Support

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

    User Support - header Beam Line Status Optics Configuration Model Compound Library Glitch Curves Instrumentation - header Detectors Data Collecting Software Experimental Design...

  20. User Services

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

    Contacts for Users User Services Print General Inquiries: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Tel: 510-486-7745 (dial last four numbers from on-site phones) Location: Building 6 mezzanine, Room 6-2212 Office hours: Monday-Friday 8am - 5pm (new users should arrive before 4pm) Address: Advanced Light Source, Berkeley Lab, MS 6-2100, Berkeley, CA 94720 Group Leader User Services Sue Bailey Prospective users, Industry users This e-mail address

  1. Probabilistic evaluation of initiation time in RC bridge beams with load-induced cracks exposed to de-icing salts

    SciTech Connect (OSTI)

    Lu Zhaohui; Zhao Yangang; Yu Zhiwu; Ding Faxing

    2011-03-15

    In this study, a reliability-based method for predicting the initiation time of reinforced concrete bridge beams with load-induced cracks exposed to de-icing salts is presented. A practical model for predicting the diffusion coefficient of chloride ingress into load-induced cracked concrete is proposed. Probabilistic information about uncertainties related to the surface chloride content and the threshold chloride concentration has been estimated from a wide review of previous experimental or statistical studies. Probabilistic analysis to estimate the time to corrosion initiation with/without considering the effect of the load-induced cracks on the chloride ingress into concrete has been carried out. Results of the analysis demonstrate the importance of considering the effect of the load-induced cracks for correct prediction of corrosion initiation in RC bridge beams exposed to chlorides.

  2. Time dependence of desorbed ground-state lithium atoms following pulsed-electron-beam irradiation of lithium fluoride

    SciTech Connect (OSTI)

    Green, T.A.; Loubriel, G.M.; Richards, P.M.; Tolk, N.H.; Haglund R.F. Jr.

    1987-01-15

    Recent experiments have shown that during the irradiation of lithium fluoride crystals by a chopped electron beam the signal of desorbed ground-state lithium atoms continues for times up to seconds in the beam-off period. A quantitative model is presented which connects the desorption of lithium atoms with the diffusion of lithium fluoride F centers to the surface. The model thus introduces a new source of time delay (F-center diffusion) in the desorption of ground-state metal atoms from alkali halides. Formerly it has been supposed that the delay occurred entirely during the surface desorption step. The model fits the experimental data very well, and should be applicable to other similar systems. For the cases considered here, F-center diffusion turns out to be the primary source of delay in the Li-atom signal. The model suggests some new directions for investigation.

  3. Time-of-flight energy analyzer for the plasma potential measurements by a heavy ion beam diagnostic

    SciTech Connect (OSTI)

    Nedzelskiy, I.S.; Malaquias, A.; Goncalves, B.; Silva, C.; Varandas, C.A.F.; Cabral, J.A.C.

    2004-10-01

    A time-of-flight (TOF) technique for the plasma potential measurements by a heavy ion beam diagnostic (HIBD) with a multiple cell array detector has been elaborated on tokamak ISTTOK as an alternative to the traditional electrostatic energy analyzer. This article describes the design and operation of a four-channel TOF energy analyzer (TOFEA). First results of plasma potential measurements by TOFEA are presented proving the feasibility of this technique in experiments with HIBD.

  4. User Policy

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

    User Policy Print 1. Guiding Principles The aim of User Policy at the Advanced Light Source (ALS) is to provide a framework for establishing a challenging yet congenial environment where talented scientists from different backgrounds can work together in pursuit of the new scientific opportunities presented by the availability of this innovative facility. User policy must address a variety of user needs and sensitivities. On one hand, the qualified researcher with little financial backing needs

  5. User Policy

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

    User Policy Print 1. Guiding Principles The aim of User Policy at the Advanced Light Source (ALS) is to provide a framework for establishing a challenging yet congenial environment where talented scientists from different backgrounds can work together in pursuit of the new scientific opportunities presented by the availability of this innovative facility. User policy must address a variety of user needs and sensitivities. On one hand, the qualified researcher with little financial backing needs

  6. User Policy

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

    Policy User Policy Print 1. Guiding Principles The aim of User Policy at the Advanced Light Source (ALS) is to provide a framework for establishing a challenging yet congenial environment where talented scientists from different backgrounds can work together in pursuit of the new scientific opportunities presented by the availability of this innovative facility. User policy must address a variety of user needs and sensitivities. On one hand, the qualified researcher with little financial backing

  7. User Packages

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

    User Packages User Packages There is more than one way for users to manage installation of Python packages on their own. Users of the Anaconda distribution may create their own environments as described here. Users of the NERSC-built modules can use virtualenv, pip, or compile and install Python packages directly. Using "pip" on Edison and Cori There is an issue with the pip command on the Cray systems because of an SSL certificate verification problem. One symptom is that you create

  8. User Services

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

    Author Guidelines User Services Print General Inquiries: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Tel: 510-486-7745 (dial last four numbers from on-site phones) Location: Building 6 mezzanine, Room 6-2212 Office hours: Monday-Friday 8am - 5pm (new users should arrive before 4pm) Address: Advanced Light Source, Berkeley Lab, MS 6-2100, Berkeley, CA 94720 Group Leader User Services Sue Bailey Prospective users, Industry users This e-mail address

  9. User Services

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

    User Services General Inquiries: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Tel: 510-486-7745 (dial last four numbers from on-site phones) Location: Building 6 mezzanine, Room 6-2212 Office hours: Monday-Friday 8am - 5pm (new users should arrive before 4pm) Address: Advanced Light Source, Berkeley Lab, MS 6-2100, Berkeley, CA 94720 Group Leader User Services Sue Bailey Prospective users, Industry users This e-mail address is being protected from

  10. User Services

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

    User Services Print General Inquiries: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Tel: 510-486-7745 (dial last four numbers from on-site phones) Location: Building 6 mezzanine, Room 6-2212 Office hours: Monday-Friday 8am - 5pm (new users should arrive before 4pm) Address: Advanced Light Source, Berkeley Lab, MS 6-2100, Berkeley, CA 94720 Group Leader User Services Sue Bailey Prospective users, Industry users This e-mail address is being protected

  11. User Services

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

    User Services Print General Inquiries: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Tel: 510-486-7745 (dial last four numbers from on-site phones) Location: Building 6 mezzanine, Room 6-2212 Office hours: Monday-Friday 8am - 5pm (new users should arrive before 4pm) Address: Advanced Light Source, Berkeley Lab, MS 6-2100, Berkeley, CA 94720 Group Leader User Services Sue Bailey Prospective users, Industry users This e-mail address is being protected

  12. User Services

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

    User Services Print General Inquiries: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Tel: 510-486-7745 (dial last four numbers from on-site phones) Location: Building 6 mezzanine, Room 6-2212 Office hours: Monday-Friday 8am - 5pm (new users should arrive before 4pm) Address: Advanced Light Source, Berkeley Lab, MS 6-2100, Berkeley, CA 94720 Group Leader User Services Sue Bailey Prospective users, Industry users This e-mail address is being protected

  13. PST user`s guide

    SciTech Connect (OSTI)

    Rempe, J.L.; Cebull, M.J.; Gilbert, B.G.

    1996-10-01

    The Parametric Source Term (PST) software allows estimation of radioactivity release fractions for Level 2 Probabilistic Safety Assessments (PSAs). PST was developed at the Idaho National Engineering Laboratory (INEL) for the Nuclear Regulatory Commission`s (NRC`s) Accident Sequence Precursor (ASP) Program. PST contains a framework of equations that model activity transport between volumes in the release pathway from the core, through the vessel, through the containment, and to the environment. PST quickly obtains exact solutions to differential equations for activity transport in each volume for each time interval. PST provides a superior method for source term estimation because it: ensures conservation of activity transported across various volumes in the release pathway; provides limited consideration of the time-dependent behavior of input parameter uncertainty distributions; allows input to be quantified using state-of-the-art severe accident analysis code results; increases modeling flexibility because linkage between volumes is specified by user input; and allows other types of Light Water Reactor (LWR) plant designs to be evaluated with minimal modifications. PST is a microcomputer-based system that allows the analyst more flexibility than a mainframe system. PST has been developed to run with both MS DOS and MS Windows 95/NT operating systems. PST has the capability to load ASP Source Term Vector (STV) information, import pre-specified default input for the 6 Pressurized Water Reactors (PWRs) initially analyzed in the NRC ASP program, allow input value modifications for release fraction sensitivity studies, export user-specified default input for the LWR being modeled, report results of radioactivity release calculations at each time interval, and generate formatted results that can interface with other risk assessment codes. This report describes the PST model and provides guidelines for using PST.

  14. User Policy

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

    Policy Print 1. Guiding Principles The aim of User Policy at the Advanced Light Source (ALS) is to provide a framework for establishing a challenging yet congenial environment where talented scientists from different backgrounds can work together in pursuit of the new scientific opportunities presented by the availability of this innovative facility. User policy must address a variety of user needs and sensitivities. On one hand, the qualified researcher with little financial backing needs

  15. Fiber-optic detector for real time dosimetry of a micro-planar x-ray beam

    SciTech Connect (OSTI)

    Belley, Matthew D.; Stanton, Ian N.; Langloss, Brian W.; Therien, Michael J.; Hadsell, Mike; Ger, Rachel; Lu, Jianping; Zhou, Otto; Chang, Sha X.; Yoshizumi, Terry T.

    2015-04-15

    Purpose: Here, the authors describe a dosimetry measurement technique for microbeam radiation therapy using a nanoparticle-terminated fiber-optic dosimeter (nano-FOD). Methods: The nano-FOD was placed in the center of a 2 cm diameter mouse phantom to measure the deep tissue dose and lateral beam profile of a planar x-ray microbeam. Results: The continuous dose rate at the x-ray microbeam peak measured with the nano-FOD was 1.91 ± 0.06 cGy s{sup −1}, a value 2.7% higher than that determined via radiochromic film measurements (1.86 ± 0.15 cGy s{sup −1}). The nano-FOD-determined lateral beam full-width half max value of 420 μm exceeded that measured using radiochromic film (320 μm). Due to the 8° angle of the collimated microbeam and resulting volumetric effects within the scintillator, the profile measurements reported here are estimated to achieve a resolution of ∼0.1 mm; however, for a beam angle of 0°, the theoretical resolution would approach the thickness of the scintillator (∼0.01 mm). Conclusions: This work provides proof-of-concept data and demonstrates that the novel nano-FOD device can be used to perform real-time dosimetry in microbeam radiation therapy to measure the continuous dose rate at the x-ray microbeam peak as well as the lateral beam shape.

  16. A split-beam probe-pump-probe scheme for femtosecond time resolved protein X-ray crystallography

    SciTech Connect (OSTI)

    van Thor, Jasper J.; Madsen, Anders

    2015-01-01

    In order to exploit the femtosecond pulse duration of X-ray Free-Electron Lasers (XFEL) operating in the hard X-ray regime for ultrafast time-resolved protein crystallography experiments, critical parameters that determine the crystallographic signal-to-noise (I/σI) must be addressed. For single-crystal studies under low absorbed dose conditions, it has been shown that the intrinsic pulse intensity stability as well as mode structure and jitter of this structure, significantly affect the crystallographic signal-to-noise. Here, geometrical parameters are theoretically explored for a three-beam scheme: X-ray probe, optical pump, X-ray probe (or “probe-pump-probe”) which will allow experimental determination of the photo-induced structure factor amplitude differences, ΔF, in a ratiometric manner, thereby internally referencing the intensity noise of the XFEL source. In addition to a non-collinear split-beam geometry which separates un-pumped and pumped diffraction patterns on an area detector, applying an additional convergence angle to both beams by focusing leads to integration over mosaic blocks in the case of well-ordered stationary protein crystals. Ray-tracing X-ray diffraction simulations are performed for an example using photoactive yellow protein crystals in order to explore the geometrical design parameters which would be needed. The specifications for an X-ray split and delay instrument that implements both an offset angle and focused beams are discussed, for implementation of a probe-pump-probe scheme at the European XFEL. We discuss possible extension of single crystal studies to serial femtosecond crystallography, particularly in view of the expected X-ray damage and ablation due to the first probe pulse.

  17. A split-beam probe-pump-probe scheme for femtosecond time resolved protein X-ray crystallography

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

    van Thor, Jasper J.; Madsen, Anders

    2015-01-01

    In order to exploit the femtosecond pulse duration of X-ray Free-Electron Lasers (XFEL) operating in the hard X-ray regime for ultrafast time-resolved protein crystallography experiments, critical parameters that determine the crystallographic signal-to-noise (I/σI) must be addressed. For single-crystal studies under low absorbed dose conditions, it has been shown that the intrinsic pulse intensity stability as well as mode structure and jitter of this structure, significantly affect the crystallographic signal-to-noise. Here, geometrical parameters are theoretically explored for a three-beam scheme: X-ray probe, optical pump, X-ray probe (or “probe-pump-probe”) which will allow experimental determination of the photo-induced structure factor amplitude differences, ΔF,more » in a ratiometric manner, thereby internally referencing the intensity noise of the XFEL source. In addition to a non-collinear split-beam geometry which separates un-pumped and pumped diffraction patterns on an area detector, applying an additional convergence angle to both beams by focusing leads to integration over mosaic blocks in the case of well-ordered stationary protein crystals. Ray-tracing X-ray diffraction simulations are performed for an example using photoactive yellow protein crystals in order to explore the geometrical design parameters which would be needed. The specifications for an X-ray split and delay instrument that implements both an offset angle and focused beams are discussed, for implementation of a probe-pump-probe scheme at the European XFEL. We discuss possible extension of single crystal studies to serial femtosecond crystallography, particularly in view of the expected X-ray damage and ablation due to the first probe pulse.« less

  18. User Services

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

    Services Print General Inquiries: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Tel: 510-486-7745 (dial last four numbers from on-site phones) Location: Building 6 mezzanine, Room 6-2212 Office hours: Monday-Friday 8am - 5pm (new users should arrive before 4pm) Address: Advanced Light Source, Berkeley Lab, MS 6-2100, Berkeley, CA 94720 Group Leader User Services Sue Bailey Prospective users, Industry users This e-mail address is being protected from

  19. User Services

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

    Services Print General Inquiries: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Tel: 510-486-7745 (dial last four numbers from on-site phones) Location: Building 6 mezzanine, Room 6-2212 Office hours: Monday-Friday 8am - 5pm (new users should arrive before 4pm) Address: Advanced Light Source, Berkeley Lab, MS 6-2100, Berkeley, CA 94720 Group Leader User Services Sue Bailey Prospective users, Industry users This e-mail address is being protected from

  20. Industrial Users

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

    Industrial Users - Media Publications and Information The Invisible Neutron Threat Neutron-Induced Failures in Semiconductor Devices Nuclear Science Research at the LANSCE-WNR...

  1. Prospective Users

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

    from universities, government labs, and industry who are interested in performing experiments at the general sciences and structural biology beamlines open to users. An...

  2. NIF Users

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

    users NIF Users Research Opportunities at the National Ignition Facility The National Ignition Facility provides the scientific community with an unprecedented capability for studying materials at extreme pressures, temperatures, and densities. NIF is expected to achieve temperatures and densities almost an order of magnitude greater than those in the sun's core and pressures far in excess of those at the core of Jupiter. The density of neutrons during the tens of picoseconds the NIF target

  3. Beam Status

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

    Beam Status Beam Status Print Loading... You can also view the Operations Group's Beam History archives.

  4. User Program | Prospective Users US

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

    ... Click on the "User Satisfaction Survey" link on the "main menu" page. If you don't have an account you will need to create one. Your login ID (username and email) is the same as ...

  5. User Accounts and Emails

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

    User Accounts and Emails Print User Accounts Once a User Agreement is signed, users may ... and Information System (IRIS) . User Emails Users may sign up for a Berkeley Lab ...

  6. JLF User Program

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

    program JLF User Program The Jupiter Laser Facility User Program is open to all qualified applicants; US and non-US PIs are welcome to submit proposals. A proposal is necessary for shot-time allocated on the Titan, Janus, and COMET laser platforms at JLF. Using technical evaluations from experts, proposals will be reviewed and ranked by the JLF Advisory Committee based on scientific and/or programmatic quality, impact, and feasibility. Typically, all platforms are overrequested by a factor of

  7. GPU accelerated fully space and time resolved numerical simulations of self-focusing laser beams in SBS-active media

    SciTech Connect (OSTI)

    Mauger, Sarah; Colin de Verdière, Guillaume; Bergé, Luc; Skupin, Stefan; Friedrich Schiller University, Institute of Condensed Matter Theory and Optics, 07743 Jena

    2013-02-15

    A computer cluster equipped with Graphics Processing Units (GPUs) is used for simulating nonlinear optical wave packets undergoing Kerr self-focusing and stimulated Brillouin scattering in fused silica. We first recall the model equations in full (3+1) dimensions. These consist of two coupled nonlinear Schrödinger equations for counterpropagating optical beams closed with a source equation for light-induced acoustic waves seeded by thermal noise. Compared with simulations on a conventional cluster of Central Processing Units (CPUs), GPU-based computations allow us to use a significant (16 times) larger number of mesh points within similar computation times. Reciprocally, simulations employing the same number of mesh points are between 3 and 20 times faster on GPUs than on the same number of classical CPUs. Performance speedups close to 45 are reported for isolated functions evaluating, e.g., the optical nonlinearities. Since the field intensities may reach the ionization threshold of silica, the action of a defocusing electron plasma is also addressed.

  8. The Particle Beam Optics Interactive Computer Laboratory (Journal...

    Office of Scientific and Technical Information (OSTI)

    professionals in learning about charged particle beams and particle beam optical systems. ... is a graphic user interface shell that provides for a highly interactive learning session. ...

  9. ALS User Meeting

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

    User Meeting ALS User Meeting web banner ALS User Meeting: October 5-7, 2015 Home Agenda Awards Exhibitors Lodging Posters Registration Transportation Workshops Contact Us User...

  10. User Services

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

    a.m. - 12.00 p.m. and 1.00 p.m. - 4.00 p.m. User Office Staff Deborah Smith adriana reza This e-mail address is being protected from spambots. You need JavaScript enabled to...

  11. Beam tuning

    SciTech Connect (OSTI)

    Pardo, R.C.; Zinkann, G.P.

    1995-08-01

    A program for configuring the linac, based on previously run configurations for any desired beam was used during the past year. This program uses only a small number of empirical tunes to scale resonator fields to properly accelerate a beam with a different charge-to-mass (q/A) ratio from the original tune configuration. The program worked very well for the PII linac section where we can easily match a new beam`s arrival phase and velocity to the tuned value. It was also fairly successful for the Booster and ATLAS sections of the linac, but not as successful as for the PII linac. Most of the problems are associated with setting the beam arrival time correctly for each major linac section. This problem is being addressed with the development of the capacitive pickup beam phase monitor discussed above. During the next year we expect to improve our ability to quickly configure the linac for new beams and reduce the time required for linac tuning. Already the time required for linac tuning as a percentage of research hours has decreased from 22% in FY 1993 to 15% in the first quarter of FY 1995.

  12. TH-C-17A-07: Visualizing and Quantifying Radiation Therapy in Real-Time Using a Novel Beam Imaging Technique

    SciTech Connect (OSTI)

    Jenkins, C; Naczynski, D; Xing, L

    2014-06-15

    Purpose: Radiation therapy uses invisible high energy X-rays to treat an invisible tumor. Proper positioning of the treatment beam relative to the patient's anatomy during dose delivery is critically important to the success of treatment. We develop and characterize a novel radiation therapy beam visualization technique for real-time monitoring of patient treatment. Methods: Custom made flexible scintillator sheets were fabricated from gadolinium oxysulfide (GOS) particles that had been doped with terbium within a silicone elastomer matrix. Sheets of several thicknesses ranging from 0.3 to 1mm were prepared and tested. Sheets were exposed to megavoltage X-ray and electron beams from a Varian linac and the resulting optical signal was collected by multiple CMOS cameras placed in the treatment room. Real-time images were collected for different beam energies and dose rates. Signal intensity and SNR were calculated by processing the acquired images. Results: All signals were detectable in the presence of full room lighting and at an integration time of 45ms. Average signal intensity and SNR increased with both sheet thickness and dose rate and decreased with beam energy and incident light. For a given sheet thickness and beam energy the correlation between dose rate and signal intensity was highly linear. Increased sheet thickness or dose rate results in a linear increase in the detected signal. All results are consistent with analytical approximations. Conclusion: The technique offers a means of accurately visualizing a radiation therapy beam shape and fluence in real time. The effects of salient parameters have been characterized and will enable further optimization of the technique as it is implemented into the clinical workflow. The project described was supported by the National Center for Advancing Translational Sciences of the National Institutes of Health through UL1 TR001085.

  13. Weekly User Schedule

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

    Weekly User Schedule Print Requests for special operations use of the "scrubbing" shift should be sent directly to Warren Byrne (486-7517) by 1:00 p.m. Friday. Any requests for changes in beam energy, bucket fill pattern, scrubbing shifts, or machine setup must be submitted to This e-mail address is being protected from spambots. You need JavaScript enabled to view it by 4:00 pm on Wednesday, the week before the scheduled run, for consideration during Thursday's Physics meeting. These

  14. Weekly User Schedule

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

    Weekly User Schedule Print Requests for special operations use of the "scrubbing" shift should be sent directly to Warren Byrne (486-7517) by 1:00 p.m. Friday. Any requests for changes in beam energy, bucket fill pattern, scrubbing shifts, or machine setup must be submitted to This e-mail address is being protected from spambots. You need JavaScript enabled to view it by 4:00 pm on Wednesday, the week before the scheduled run, for consideration during Thursday's Physics meeting. These

  15. AMBER User's Manual

    SciTech Connect (OSTI)

    Vay, J.L.; Fawley, W.

    2000-11-08

    AMBER is a Particle-In-Cell (PIC) code which models the evolution of a representative slice of a relativistic electron beam in a linear accelerator. The beam is modeled as a steady flow and therefore no electromagnetic waves: all the fields (external and self-fields) are electrostatic and magnetostatic fields (for a complete description, see chapter 5). The possible elements describing the accelerator lattice are solenoids, accelerating gaps, pipes and apertures. Several kinds of beam distribution can be loaded: KV, gaussian, semi-gaussian, etc. Alternatively, the user can reconstruct (or load) a distribution from the output of another codefile, for example, an interface generating the beam distribution from output produced from EGUN or LSP codes is available as an option. This documentation first describes in detail the input files needed to run AMBER and the procedure to start the executable. The possible data files and graphical output are explained in the two following chapters. The last chapter describes the physics model and numerical techniques used. An example of input files and the result obtained with these inputs are also given in the Appendix.

  16. SU-D-BRE-02: Development and Commissioning of A Gated Spot Scanning Proton Beam Therapy System with Real-Time Tumor-Tracking

    SciTech Connect (OSTI)

    Umegaki, K; Matsuura, T.; Takao, S.; Nihongi, H.; Yamada, T.; Miyamoto, N.; Shimizu, S.; Shirato, H.; Matsuda, K.; Nakamura, F.; Umezawa, M.; Hiramoto, K.

    2014-06-01

    Purpose: A novel Proton Beam Therapy system has been developed by integrating Real-Time Tumor-Tracking (RTRT) and discrete spot scanning techniques. The system dedicated for spot scanning delivers significant advantages for both clinical and economical points of view. The system has the ability to control dose distribution with spot scanning beams and to gate the beams from the synchrotron to irradiate moving tumors only when the actual positions of them are within the planned position. Methods: The newly designed system consists of a synchrotron, beam transport systems, a compact and rotating gantry system with robotic couch and two orthogonal sets of X-ray fluoroscopes. The fully compact design of the system has been realized by reducing the maximum energy of the beam to 220MeV, corresponding to 30g/cm2 range and the number of circulating protons per synchrotron operation cycle, due to higher beam utilization efficiency in spot scanning. To improve the irradiation efficiency in the integration of RTRT and spot scanning, a new control system has been developed to enable multiple gated irradiation per operation cycle according to the gating signals. After the completion of the equipment installation, beam tests and commissioning has been successfully performed. Results: The basic performances and beam characteristics through the synchrotron accelerator to iso-center have been confirmed and the performance test of the irradiation nozzle and whole system has been appropriately completed. CBCT image has been checked and sufficient quality was obtained. RTRT system has been demonstrated and realized accurate dose distributions for moving targets. Conclusion: The gated spot scanning Proton Beam Therapy system with Real-Time Tumor-Tracking has been developed, successfully installed and tested. The new system enables us to deliver higher dose to the moving target tumors while sparing surrounding normal tissues and to realize the compact design of the system and facility

  17. User Environment

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

    User Environment Environment on Genepool When you log into the Genepool system you will land in your $HOME directory on NERSC's "global homes" file system. The global homes file system is mounted across all NERSC computation systems with the exception of PDSF. The $HOME directory has quota of 40GB and 1,000,000 inodes. To customize your environment, by setting environment variables or aliases, you will need to modify one of the "dot" files that NERSC has created for you. You

  18. NIF and Jupiter User Group Meeting 2014

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

    workshops / user group 2014 / NIF and Jupiter User Group Meeting 2014 About the NIF and Jupiter User Group Meeting The 192-beam National Ignition Facility (NIF), the most energetic inertial confinement fusion (ICF) facility in the world, is now operational. The NIF laser's unprecedented power, precision, and reproducibility, coupled with over 50 available diagnostics and sophisticated target fabrication capability, enable a wide range of leading edge scientific experiments. Initial experiments

  19. User Financial Account Form

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

    22013 User Financial Account Form Establish a user financial account at SLAC to procure gases, chemicals, supplies or services to support your experiment at SLAC's user ...

  20. User Financial Account Form

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

    102115 User Financial Account Form Establish a user financial account at SLAC to procure gases, chemicals, supplies or services to support your experiment at SLAC's user ...

  1. 2013 ALS User Meeting

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

    3 ALS User Meeting banner Home Agenda Awards Exhibitors Lodging Posters Registration T-Shirt Contest Transportation Workshops Contact Us User Meeting Archives Users' Executive...

  2. 2013 ALS User Meeting

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

    2013 ALS User Meeting Print banner Home Agenda Awards Exhibitors Lodging Posters Registration T-Shirt Contest Transportation Workshops Contact Us User Meeting Archives Users'...

  3. ALS User Meeting

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

    ALS User Meeting Print web banner ALS User Meeting: October 5-7, 2015 Home Agenda Awards Exhibitors Lodging Posters Registration Transportation Workshops Contact Us User Meeting...

  4. Beam Status

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

    Beam Status Print Loading... You can also view the Operations Group's Beam History archives

  5. Blanket Module Boil-Off Times during a Loss-of-Coolant Accident - Case 0: with Beam Shutdown only

    SciTech Connect (OSTI)

    Hamm, L.L.

    1998-10-07

    This report is one of a series of reports that document LBLOCA analyses for the Accelerator Production of Tritium primary blanket Heat Removal system. This report documents the analysis results of a LBLOCA where the accelerator beam is shut off without primary pump trips and neither the RHR nor the cavity flood systems operation.

  6. High bandwidth beam current monitor

    SciTech Connect (OSTI)

    Baltrusaitis, R.M.; Ekdahl, C.A. ); Cooper, R.G. . Santa Barbara Operations); Peterson, E.; Warn, C.E. . Las Vegas Operations)

    1993-01-01

    A stripline directional coupler beam current monitor capable of measuring the time structure of a 30-ps electron beam bunch has been developed. The time response performance of the monitor compares very well with Cherenkov light produced in quartz by the electron beam. The four-pickup monitor is now used on a routine basis for measuring the beam duration, tuning for optimized beam bunching, and centering the bunch in the beam pipe.

  7. High bandwidth beam current monitor

    SciTech Connect (OSTI)

    Baltrusaitis, R.M.; Ekdahl, C.A.; Cooper, R.G.; Peterson, E.; Warn, C.E.

    1993-06-01

    A stripline directional coupler beam current monitor capable of measuring the time structure of a 30-ps electron beam bunch has been developed. The time response performance of the monitor compares very well with Cherenkov light produced in quartz by the electron beam. The four-pickup monitor is now used on a routine basis for measuring the beam duration, tuning for optimized beam bunching, and centering the bunch in the beam pipe.

  8. User Policy

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

    backing needs assurance of adequate access to the facility. On the other hand, qualified groups that make a large commitment of time and resources need some assurance of an...

  9. User Program Performance Monitor

    Energy Science and Technology Software Center (OSTI)

    1983-09-30

    PROGLOOK makes it possible to monitor the execution of virtually any OS/MVT or OS/VS2 Release 1.6 load module. The main reason for using PROGLOOK is to find out which portions of a code use most of the CPU time so that those parts of the program can be rewritten to reduce CPU time. For large production programs, users have typically found it possible to reduce CPU time by 10 to 30 percent without changing themore » program''s function.« less

  10. User Meeting Awards

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

    User Meeting Awards Print web banner ALS User Meeting Awards See the 2013 User Meeting Awards Winners Home Agenda Awards Exhibitors Lodging Posters Registration Transportation Workshops This e-mail address is being protected from spambots. You need JavaScript enabled to view it User Meeting Archives Users' Executive Committee The ALS Users' Executive Committee invites ALS users and staff to submit nominations in recognition of the people who have made significant contributions to the scientific

  11. JLab Users Group

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

    JLab Users Group Please upgrade your browser. This site's design is only visible in a graphical browser that supports web standards, but its content is accessible to any browser. Concerns? JLab Users Group User Liaison Home Users Group Program Advisory Committee User/Researcher Information print version UG Resources Background & Purpose Users Group Wiki By Laws Board of Directors Board of Directors Minutes Directory of Members Events At-A-Glance Member Institutions News Users Group Mailing

  12. Magnetically operated beam dump for dumping high power beams in a neutral beamline

    DOE Patents [OSTI]

    Dagenhart, W.K.

    1984-01-27

    It is an object of this invention to provide a beam dump system for a neutral beam generator which lowers the time-averaged power density of the beam dump impingement surface. Another object of this invention is to provide a beam dump system for a neutral particle beam based on reionization and subsequent magnetic beam position modulation of the beam onto a beam dump surface to lower the time-averaged power density of the beam dump ion impingement surface.

  13. LANSCE | Users | LUG | Topical User Workshop

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

    2 LANSCE Topical User Meeting | January 9-10 2012 LANSCE Topical User Workshop LANSCE will host the 2012 Topical User Workshop, January 9-10, 2012. We hope to see you there! Registration | Accommodations | Agenda (some presentations are included on the agenda) LANL foreign nationals may register at anytime. | Poster Dimensions: 32 in x 40 in This workshop will solicit user input for the scientific opportunities offered by the pulse stacker and superconducting accelerator that LANSCE has proposed

  14. Beam-beam simulations for separated beams

    SciTech Connect (OSTI)

    Furman, Miguel A.

    2000-04-10

    We present beam-beam simulation results from a strong-strong gaussian code for separated beams for the LHC and RHIC. The frequency spectrum produced by the beam-beam collisions is readily obtained and offers a good opportunity for experimental comparisons. Although our results for the emittance blowup are preliminary, we conclude that, for nominal parameter values, there is no significant difference between separated beams and center-on-center collisions.

  15. Users' Executive Committee

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

    Users' Executive Committee Print The ALS Users' Executive Committee (UEC) is responsible for conveying the concerns and interests of users to ALS management. Members are elected annually by ALS users. To contact a member of the UEC, please email This e-mail address is being protected from spambots. You need JavaScript enabled to view it . ALS Users' Executive Committee Web Site ALS Users' Association Charter The current members of the committee (with terms), as of January 1, 2016, are David

  16. Users' Executive Committee

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

    Users' Executive Committee Print The ALS Users' Executive Committee (UEC) is responsible for conveying the concerns and interests of users to ALS management. Members are elected annually by ALS users. To contact a member of the UEC, please email This e-mail address is being protected from spambots. You need JavaScript enabled to view it . ALS Users' Executive Committee Web Site ALS Users' Association Charter The current members of the committee (with terms), as of January 1, 2016, are David

  17. JLF User Group

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

    jlf user group JLF User Group 2015 NIF and JLF User Group Meeting Links: Send request to join the JLF User Group Join the NIF User Group Dr. Carolyn Kuranz - JLF User Group Dr. Carolyn Kuranz received her Ph.D. in Applied Physics from the University of Michigan in 2009. She is currently an Assistant Research Scientist at the Center for Laser Experimental Astrophysical Research and the Center for Radiative Shock Hydrodynamics at the University of Michigan. Her research involves hydrodynamic

  18. User Accounts and Emails

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

    User Accounts and Emails Print User Accounts Once a User Agreement is signed, users may set up an account for miscellaneous supplies and expenses at the ALS. To establish a user account, please contact This e-mail address is being protected from spambots. You need JavaScript enabled to view it , Budget and Planning, (x 6889). Users can keep track of expenses charged to their Berkeley Lab accounts through the Lab's Integrated Reporting and Information System (IRIS) . User Emails Users may sign up

  19. User Accounts and Emails

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

    User Accounts and Emails Print User Accounts Once a User Agreement is signed, users may set up an account for miscellaneous supplies and expenses at the ALS. To establish a user account, please contact This e-mail address is being protected from spambots. You need JavaScript enabled to view it , Budget and Planning, (x 6889). Users can keep track of expenses charged to their Berkeley Lab accounts through the Lab's Integrated Reporting and Information System (IRIS) . User Emails Users may sign up

  20. Establish a User Agreement

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

    is the document that permits the User andor the home organization to retain ownership of intellectual property. Without the user agreement in place, the University of California...

  1. Co: clqrt. Beam

    Office of Legacy Management (LM)

    Co: clqrt. Beam*/:

  2. Time-fractional Gardner equation for ion-acoustic waves in negative-ion-beam plasma with negative ions and nonthermal nonextensive electrons

    SciTech Connect (OSTI)

    Guo, Shimin Mei, Liquan; Zhang, Zhengqiang

    2015-05-15

    Nonlinear propagation of ion-acoustic waves is investigated in a one-dimensional, unmagnetized plasma consisting of positive ions, negative ions, and nonthermal electrons featuring Tsallis distribution that is penetrated by a negative-ion-beam. The classical Gardner equation is derived to describe nonlinear behavior of ion-acoustic waves in the considered plasma system via reductive perturbation technique. We convert the classical Gardner equation into the time-fractional Gardner equation by Agrawal's method, where the time-fractional term is under the sense of Riesz fractional derivative. Employing variational iteration method, we construct solitary wave solutions of the time-fractional Gardner equation with initial condition which depends on the nonlinear and dispersion coefficients. The effect of the plasma parameters on the compressive and rarefactive ion-acoustic solitary waves is also discussed in detail.

  3. Interactive visualization of particle beams for accelerator design

    SciTech Connect (OSTI)

    Wilson, Brett; Ma, Kwan-Liu; Qiang, Ji; Ryne, Robert

    2002-01-15

    We describe a hybrid data-representation and rendering technique for visualizing large-scale particle data generated from numerical modeling of beam dynamics. The basis of the technique is mixing volume rendering and point rendering according to particle density distribution, visibility, and the user's instruction. A hierarchical representation of the data is created on a parallel computer, allowing real-time partitioning into high-density areas for volume rendering, and low-density areas for point rendering. This allows the beam to be interactively visualized while preserving the fine structure usually visible only with slow point based rendering techniques.

  4. Franklin: User Experiences

    SciTech Connect (OSTI)

    National Energy Research Supercomputing Center; He, Yun; Kramer, William T.C.; Carter, Jonathan; Cardo, Nicholas

    2008-05-07

    The newest workhorse of the National Energy Research Scientific Computing Center is a Cray XT4 with 9,736 dual core nodes. This paper summarizes Franklin user experiences from friendly early user period to production period. Selected successful user stories along with top issues affecting user experiences are presented.

  5. Managing Your User Account

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

    Managing Your Account Managing Your User Account Use the NERSC Information Management (NIM) system to customize your user account and keep your personal information up-to-date. See the NIM User's Guide, especially the "Managing Your User Account with NIM" section. Last edited: 2016-04-29 11:35:06

  6. ALS User Meeting

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

    ALS User Meeting October 3-5, 2011 Lawrence Berkeley National Laboratory, California

  7. Time evolution of the luminosity of colliding heavy-ion beams in BNL Relativistic Heavy Ion Collider and CERN Large Hadron Collider

    SciTech Connect (OSTI)

    Bruce, R.; Blaskiewicz, M.; Jowett, J.M.; Fischer, W.

    2010-09-07

    We have studied the time evolution of the heavy ion luminosity and bunch intensities in the Relativistic Heavy Ion Collider (RHIC), at BNL, and in the Large Hadron Collider (LHC), at CERN. First, we present measurements from a large number of RHIC stores (from Run 7), colliding 100 GeV/nucleon {sup 197}Au{sup 79}+ beams without stochastic cooling. These are compared with two different calculation methods. The first is a simulation based on multi-particle tracking taking into account collisions, intrabeam scattering, radiation damping, and synchrotron and betatron motion. In the second, faster, method, a system of ordinary differential equations with terms describing the corresponding effects on emittances and bunch populations is solved numerically. Results of the tracking method agree very well with the RHIC data. With the faster method, significant discrepancies are found since the losses of particles diffusing out of the RF bucket due to intrabeam scattering are not modeled accurately enough. Finally, we use both methods to make predictions of the time evolution of the future {sup 208}Pb+{sup 82+} beams in the LHC at injection and collision energy. For this machine, the two methods agree well.

  8. NIF User Group

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

    group NIF User Group The National Ignition Facility User Group provides an organized framework and independent vehicle for interaction between the scientists who use NIF for "Science Use of NIF" experiments and NIF management. Responsibility for NIF and the research programs carried out at NIF resides with the NIF Director. The NIF User Group advises the NIF Director on matters of concern to users, as well as providing a channel for communication for NIF users with funding agencies and

  9. National User Facilities

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

    National User Facilities Our Vision National User Facilities Research Areas In Focus Global Solutions ⇒ Navigate Section Our Vision National User Facilities Research Areas In Focus Global Solutions Berkeley Lab's User Facilities-Engines of Discovery Berkeley Lab's User Facilities provide state-of-the-art resources for scientists across the nation and around the world. About 10,000 researchers a year use these facilities, representing nearly one third of the total for all Department of Energy

  10. Profiling users in the UNIX os environment

    SciTech Connect (OSTI)

    Dao, V N P; Vemuri, R; Templeton, S J

    2000-09-29

    This paper presents results obtained by using a method of profiling a user based on the login host, the login time, the command set, and the command set execution time of the profiled user. It is assumed that the user is logging onto a UNIX host on a computer network. The paper concentrates on two areas: short-term and long-term profiling. In short-term profiling the focus is on profiling the user at a given session where user characteristics do not change much. In long-term profiling, the duration of observation is over a much longer period of time. The latter is more challenging because of a phenomenon called concept or profile drift. Profile drift occurs when a user logs onto a host for an extended period of time (over several sessions).

  11. Establish a User Agreement

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

    Establish a User Agreement Establish a User Agreement Print Wednesday, 26 August 2009 16:00 User Agreements are Required Before a user group can begin their research at the ALS, a User Agreement between Berkeley Lab and the user's sponsoring organization must be signed. Many organizations already have a signed agreement, however if your organization has not established an agreement, please send an email to This e-mail address is being protected from spambots. You need JavaScript enabled to view

  12. Establish a User Agreement

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

    Establish a User Agreement Print User Agreements are Required Before a user group can begin their research at the ALS, a User Agreement between Berkeley Lab and the user's sponsoring organization must be signed. Many organizations already have a signed agreement, however if your organization has not established an agreement, please send an email to This e-mail address is being protected from spambots. You need JavaScript enabled to view it to set one up. The User Agreement is valid for up to

  13. Gated beam imager for heavy ion beams

    SciTech Connect (OSTI)

    Ahle, Larry; Hopkins, Harvey S.

    1998-12-10

    As part of the work building a small heavy-ion induction accelerator ring, or recirculator, at Lawrence Livermore National Laboratory, a diagnostic device measuring the four-dimensional transverse phase space of the beam in just a single pulse has been developed. This device, the Gated Beam Imager (GBI), consists of a thin plate filled with an array of 100-micron diameter holes and uses a Micro Channel Plate (MCP), a phosphor screen, and a CCD camera to image the beam particles that pass through the holes after they have drifted for a short distance. By time gating the MCP, the time evolution of the beam can also be measured, with each time step requiring a new pulse.

  14. Gated beam imager for heavy ion beams

    SciTech Connect (OSTI)

    Ahle, L.; Hopkins, H.S.

    1998-12-01

    As part of the work building a small heavy-ion induction accelerator ring, or recirculator, at Lawrence Livermore National Laboratory, a diagnostic device measuring the four-dimensional transverse phase space of the beam in just a single pulse has been developed. This device, the Gated Beam Imager (GBI), consists of a thin plate filled with an array of 100-micron diameter holes and uses a Micro Channel Plate (MCP), a phosphor screen, and a CCD camera to image the beam particles that pass through the holes after they have drifted for a short distance. By time gating the MCP, the time evolution of the beam can also be measured, with each time step requiring a new pulse. {copyright} {ital 1998 American Institute of Physics.}

  15. Growth, steady-state, and time-resolved photoluminescence study of CdTe/MgCdTe double heterostructures on InSb substrates using molecular beam epitaxy

    SciTech Connect (OSTI)

    DiNezza, Michael J.; Liu, Shi; Kirk, Alexander P.; Zhang, Yong-Hang; School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona 85287 ; Zhao, Xin-Hao; School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287

    2013-11-04

    CdTe/MgCdTe double heterostructures (DHs) are grown on InSb substrates using molecular beam epitaxy and reveal strong photoluminescence with over double the intensity of a GaAs/AlGaAs DH with an identical layer structure design grown on GaAs. Time-resolved photoluminescence of the CdTe/MgCdTe DH gives a Shockley-Read-Hall recombination lifetime of 86 ns, which is more than one order of magnitude longer than that of typical polycrystalline CdTe films. These findings indicate that monocrystalline CdTe/MgCdTe DHs effectively reduce surface recombination, have limited nonradiative interface recombination, and are promising for solar cells that could reach power conversion efficiencies similar to that of GaAs.

  16. ALS Users' Association Charter

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

    facility. Thorough discussion with users of current projects, as well as plans for the future, will place ALS management in a better position to evaluate the needs of users and...

  17. OSG New User Form

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

    Policies User Surveys NERSC Users Group Help Staff Blogs Request Repository Mailing List Need Help? Out-of-hours Status and Password help Call operations: 1-800-66-NERSC, option 1 ...

  18. The LTS timing analysis program : user%3CU%2B2019%3Es manual and description of the methods of analysis.

    SciTech Connect (OSTI)

    Armstrong, Darrell Jewell; Schwarz, Jens

    2013-08-01

    The LTS Timing Analysis program described in this report uses signals from the Tempest Lasers, Pulse Forming Lines, and Laser Spark Detectors to carry out calculations to quantify and monitor the performance of the the Z-Accelerator's laser triggered SF6 switches. The program analyzes Z-shots beginning with Z2457, when Laser Spark Detector data became available for all lines.

  19. User Financial Account Form

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

    2/20/13 User Financial Account Form Establish a user financial account at SLAC to procure gases, chemicals, supplies or services to support your experiment at SLAC's user facilities and to send samples, dewars, or other equipment between SLAC and your institution. To open or renew your SLAC user financial account, complete and submit this form along with a Purchase Order (PO) from your institution. The PO should be made to SLAC National Accelerator Laboratory for the amount of estimated

  20. 2011 User Meeting Agenda

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

    1 User Meeting Agenda Home Agenda Awards Exhibitors Lodging Posters Registration Photo Contest Transportation Workshops This e-mail address is being protected from spambots. You need JavaScript enabled to view it User Meeting Archives Users' Executive Committee The 2011 ALS User Meeting begins registation begins at 07:30 on Monday, October 3, outside the Building 50 Auditorium. The meeting itself will start at 08:25 inside the Building 50 Auditorium; all plenary sessions will also be held at

  1. LANSCE | Users | LUG | Charter

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

    Charter I. NAME The name of this organization shall be the Los Alamos Neutron Science Center (LANSCE) User Group. II. PURPOSE The purpose of the LANSCE User Group (LUG) is to: * Provide a formal channel for the exchange of information between LANSCE management and the researchers who use the facilities. * Supply a vehicle for users of LANSCE to transmit concerns and recommendations to the LANSCE management about operating policy, facilities, and other matters affecting the user community. *

  2. User Program | Prospective Users Non-US

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

    ... Click on the "User Satisfaction Survey" link on the "main menu" page. If you don't have an account you will need to create one. Your login ID (username and email) is the same as ...

  3. Light beam frequency comb generator

    DOE Patents [OSTI]

    Priatko, G.J.; Kaskey, J.A.

    1992-11-24

    A light beam frequency comb generator uses an acousto-optic modulator to generate a plurality of light beams with frequencies which are uniformly separated and possess common noise and drift characteristics. A well collimated monochromatic input light beam is passed through this modulator to produce a set of both frequency shifted and unshifted optical beams. An optical system directs one or more frequency shifted beams along a path which is parallel to the path of the input light beam such that the frequency shifted beams are made incident on the modulator proximate to but separated from the point of incidence of the input light beam. After the beam is thus returned to and passed through the modulator repeatedly, a plurality of mutually parallel beams are generated which are frequency-shifted different numbers of times and possess common noise and drift characteristics. 2 figs.

  4. Light beam frequency comb generator

    DOE Patents [OSTI]

    Priatko, Gordon J.; Kaskey, Jeffrey A.

    1992-01-01

    A light beam frequency comb generator uses an acousto-optic modulator to generate a plurality of light beams with frequencies which are uniformly separated and possess common noise and drift characteristics. A well collimated monochromatic input light beam is passed through this modulator to produce a set of both frequency shifted and unshifted optical beams. An optical system directs one or more frequency shifted beams along a path which is parallel to the path of the input light beam such that the frequency shifted beams are made incident on the modulator proximate to but separated from the point of incidence of the input light beam. After the beam is thus returned to and passed through the modulator repeatedly, a plurality of mutually parallel beams are generated which are frequency-shifted different numbers of times and possess common noise and drift characteristics.

  5. Time-dependent, x-ray spectral unfolds and brightness temperatures for intense Li{sup +} ion beam-driven hohlraums

    SciTech Connect (OSTI)

    Fehl, D.L.; Chandler, G.A.; Biggs, F.; Dukart, R.J.; Moats, A.R.; Leeper, R.J.

    1997-01-01

    X-ray-producing hohlraums are being studied as indirect drives for inertial confinement fusion targets. In a 1994 target series on the PBFAII accelerator, cylindrical hohlraum targets were heated by an intense Li{sup +} ion beam and viewed by an array of 13 time-resolved, filtered x-ray detectors (XRDs). The unfold operator (UFO) code and its suite of auxiliary functions were used extensively in obtaining time-resolved x-ray spectra and radiation temperatures from this diagnostic. The UFO was also used to obtain fitted response functions from calibration data, to simulate data from blackbody x-ray spectra of interest, to determine the suitability of various unfolding parameters (e.g., energy domain, energy partition, smoothing conditions, and basis functions), to interpolate the XRD signal traces, and to unfold experimental data. The simulation capabilities of the code were useful in understanding an anomalous feature in the unfolded spectra at low photon energies ({le}100 eV). Uncertainties in the differential and energy-integrated unfolded spectra were estimated from uncertainties in the data. The time{endash}history of the radiation temperature agreed well with independent calculations of the wall temperature in the hohlraum. {copyright} {ital 1997 American Institute of Physics.}

  6. Time-dependent, x-ray spectral unfolds and brightness temperatures for intense Li{sup +} ion beam-driven hohlraums

    SciTech Connect (OSTI)

    Fehl, D.L.; Chandler, G.A.; Biggs, F.; Dukart, R.J.; Moats, A.R.; Leeper, R.J.

    1996-07-01

    X-ray-producing hohlraums are being studied as indirect drives for Inertial Confinement Fusion targets. In a 1994 target series on the PBFAII accelerator, cylindrical hohlraum targets were heated by an intense Li{sup +} ion beam and viewed by an array of 13 time-resolved, filtered x-ray detectors (XRDs). The UFO unfold code and its suite of auxiliary functions were used extensively in obtaining time- resolved x-ray spectra and radiation temperatures from this diagnostic. UFO was also used to obtain fitted response functions from calibration data, to simulate data from blackbody x-ray spectra of interest, to determine the suitability of various unfolding parameters (e.g., energy domain, energy partition, smoothing conditions, and basis functions), to interpolate the XRD signal traces, and to unfold experimental data. The simulation capabilities of the code were useful in understanding an anomalous feature in the unfolded spectra at low photon energies ({le} 100 eV). Uncertainties in the differential and energy-integrated unfolded spectra were estimated from uncertainties in the data. The time-history of the radiation temperature agreed well with independent calculations of the wall temperature in the hohlraum.

  7. As you prepare for your upcoming beam time, please be aware that construction is planned to update SLAC Gate 17 with RFID proximity card access hardware and to change the stairs next to the Security hut to an ADA compliant ramp. Please forward this to your proposal collaborators (and ensure that all users have registered and completed training before they arrive). This construction is scheduled to begin Tuesday 5/28 and be completed by 6/28. During this construction, access to the LCLS and SSRL buildings and experimental facilities will be provided as follows: VEHICLES ONLY THROUGH GATE 17 5/28-6/28 0600-1530 (6 am-3:30 pm) Construction Zone. Only VEHICLE traffic will be allowed access through Gate 17 and flagman will provide traffic control. 1530-1800 (3:30-6:00 pm) Assumes construction will have stopped for the day; both traffic lanes will be open for vehicles. 1800-0600 (6 pm-6 am) As now, Gate 17 will be closed or barricaded overnight. PEDESTRIANS ONLY THROUGH GATE 16 5/28-6/28 The pedestrian turnstile at Gate 16A will not change. The turnstile is available for pedestrian use 24/7 as long as the individual has a valid SLAC ID badge (and there is a guard at Gate 30 to 'buzz' them through). 0700-1600 (6 am-4 pm) Pedestrians who would normally walk through Gate 17 will instead follow the detour to Gate 16 swing gate which will be unlocked and staffed by Security. A valid SLAC ID badge is needed to enter; new users without IDs will be allowed to proceed for check-in and badging after confirmation with the User Research Administration Office (see detour map attached). FYI - After the construction is completed and proximity card readers are fully functional, users and staff will enter Gates 17 and 30 using an activated RFID proximity card. More details to follow.

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

    Building 137 Bldg. 270 CONSTRUCTION IMPACTS PEDESTRIAN AND VEHICLE ACCESS THROUGH SLAC SECURITY GATE 17 ~ May 28-June 28, 2013 The stairs next to the Gate 17 Guard House will be replaced with an ADA compliant ramp; the turnstile and fence at SLAC Gate 17 will be updated with RFID proximity card access hardware. During this construction, access beyond the fence, including the SSRL and LCLS buildings and user facilities will be provided as follows: VEHICLES ONLY THROUGH GATE 17 Security will

  8. CombinePlt and CombineThs user manual: Merging multiple, processor-local plot and time-history data bases produced during a parallel calculation. Revision 1

    SciTech Connect (OSTI)

    Procassini, R.J.; DeGroot, A.J.

    1995-09-21

    The CombinePlt and CombineThs post-processing utilities are designed to merge the data in multiple, processor-local plot and time-history data bases produced by the parallel versions of the analysis codes DYNA3D, NIKE3D or PING into a serial database which is compatible with the existing versions of the GRIZ and THUG visualization tools. These utilities make use of the partition assignment file produced by the PartMesh suite for pre-processing utilities to map the data from the processor-local order to global order. These utilities are also capable of translating 64-bit IEEE data bases into 32-bit IEEE data bases which are required for post-processing with GRIZ or THUG on an SGI workstation.

  9. CombinePlt and CombineThs user manual: Merging multiple, processor-local plot and time-history data bases produced during a parallel calculation

    SciTech Connect (OSTI)

    Procassini, R.J.; DeGroot, A.J.

    1995-06-01

    The CombinePlt and CombineThs post-processing utilities are designed to merge the data in multiple, processor-local plot and time-history data bases produced by the parallel versions of the analysis codes DYNA3D, NIKE3D or PING into a serial data base which is compatible with the existing versions of the GRIZ and THUG visualization tools. These utilities make use of the partition assignment file produced by the PartMesh suite of pre-processing utilities to map the data from the processor-local order to global order. These utilities are also capable of translating 64-bit IEEE data bases into 32-bit IEEE data bases which are required for post-processing with GRIZ or THUG on an SGI workstation.

  10. MAESTRO Beamline Set to Open to Users

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

    MAESTRO Beamline Set to Open to Users MAESTRO Beamline Set to Open to Users Print It was 10 years ago that ALS Senior Staff Scientist Eli Rotenberg devised the name Microscopic and Electronic STRucture Observatory, or MAESTRO, for his long-envisioned beamline dedicated to the determination of the electronic structure of materials at the mesoscopic length scale. This September, the beamline, 7.0.2, will accept general user proposals for the first time, offering researchers unparalleled

  11. Early Edison Users Deliver Results

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

    Early Edison Users Deliver Results Early Edison Users Deliver Results January 31, 2014 Contact: Margie Wylie, mwylie@lbl.gov, +1 510 486 7421 Before any supercomputer is accepted at NERSC, scientists are invited to put the system through its paces during an "early science" phase. While the main aim of this period is to test the new system, many scientists are able to use the time to significantly advance their work. (»Related story: "Edison Electrifies Scientific

  12. Monthly PDSF User Meeting Minutes

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

    Software Policies User Surveys NERSC Users Group User Announcements Help Staff Blogs Request Repository Mailing List Operations for: Passwords & Off-Hours Status...

  13. 2012 ALS User Meeting Awards

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

    2012 ALS User Meeting Awards Print Recipients of the 2012 Users' Executive Committee awards and Student Poster Competition were announced Tuesday, October 9, at the ALS User...

  14. 2012 ALS User Meeting Awards

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

    2 ALS User Meeting Awards Recipients of the 2012 Users' Executive Committee awards and Student Poster Competition were announced Tuesday, October 9, at the ALS User Meeting. David...

  15. Protective laser beam viewing device

    DOE Patents [OSTI]

    Neil, George R.; Jordan, Kevin Carl

    2012-12-18

    A protective laser beam viewing system or device including a camera selectively sensitive to laser light wavelengths and a viewing screen receiving images from the laser sensitive camera. According to a preferred embodiment of the invention, the camera is worn on the head of the user or incorporated into a goggle-type viewing display so that it is always aimed at the area of viewing interest to the user and the viewing screen is incorporated into a video display worn as goggles over the eyes of the user.

  16. PIA - Advanced Test Reactor National Scientific User Facility Users Week

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

    2009 | Department of Energy Advanced Test Reactor National Scientific User Facility Users Week 2009 PIA - Advanced Test Reactor National Scientific User Facility Users Week 2009 PIA - Advanced Test Reactor National Scientific User Facility Users Week 2009 PIA - Advanced Test Reactor National Scientific User Facility Users Week 2009 (316.78 KB) More Documents & Publications PIA - INL SECURITY INFORMATION MANAGEMENT SYSTEM BUSINESS ENCLAVE PIA - INL Education Programs Business Enclav

  17. Beam Transport

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

    Beam Transport A simplified drawing of the beam transport system from the linac to Target-1 (Lujan Center), Target-2 (Blue Room) and Target-4 is shown below. In usual operation ...

  18. LANSCE | User Resources | User Satisfaction Survey

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

    User Satisfaction Survey We hope that your research at the Los Alamos Neutron Science Center was productive and successful. Your feedback is important to the Department of Energy and us. Please take a few minutes to respond to the questions on the following page. Your assessment of your experience at LANSCE is used by DOE to evaluate and fund the facility, by the User Group Executive Committee to determine issues and to make recommendations to address them, and by the management and staff of

  19. Beam Time Changes.xls

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

    He 45 55 55 55 55 55 55 55 70 70 70 14 N 40 40 40 40 40 40 40 40 50 50 50 20 Ne 50 40 25* 35 30 30 30 30 45 45 45 40 Ar 50 40 25* 35 30 30 30 30 45 45 45 63 Cu 50 40 35 35 35 35 35...

  20. High resolution low dose transmission electron microscopy real-time imaging and manipulation of nano-scale objects in the electron beam

    DOE Patents [OSTI]

    Brown, Jr., R. Malcolm; Barnes, Zack; Sawatari, Chie; Kondo, Tetsuo

    2008-02-26

    The present invention includes a method, apparatus and system for nanofabrication in which one or more target molecules are identified for manipulation with an electron beam and the one or more target molecules are manipulated with the electron beam to produce new useful materials.

  1. 2015 CAMD Users Meeting

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

    CAMD 2015 Symposium followed by the CAMD Users' Meeting SAXS Workshop Thursday, April 23th, 2015 CAMD, 6980 Jefferson Highway, Baton Rouge, LA 70806 CAMD 2015 Symposium followed by the CAMD Users' Meeting Friday, April 24th, 2015 LTRC Transportation Training and Education Center (Map) The CAMD 2015 Symposium followed by the CAMD Users' Meeting will be held on Friday, April 24th at the LTRC Transportation Training and Education Center, 4099 Gourrier Avenue, Baton Rouge, LA 70808, directly behind

  2. ALS Users' Association Charter

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

    Users' Executive Committee ALS Users' Association Charter Print The purpose of the Advanced Light Source Users' Association (ALSUA) is to provide an organized framework for the interaction between those who use the Advanced Light Source (ALS) at the Lawrence Berkeley Laboratory (LBL) for their research and the ALS management, as well as to provide a channel for communication with other synchrotron radiation laboratories and, on suitable occasions, with federal agencies. The ALSUA, representing

  3. Shifter: User Defined Images

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

    Shifter: User Defined Images Shifter: User Defined Images Shifter: Bringing Linux containers to HPC NERSC is working to increase flexibility and usability of its HPC systems by enabling Docker-like Linux container technology. Linux containers allow an application to be packaged with its entire software stack - including some portions of the base OS files - as well defining needed user environment variables and application "entry point.". Containers may provide an abstract way of

  4. ALS User Meeting Archives

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

    ALS User Meeting Archives Print Past User Meeting Programs, Workshops, and Awards Year David A. Shirley (Science) Klaus Halbach (Instrumentation) Tim Renner (Service) 2015 Program Workshops Wanli Yang, "For new concepts optimizing battery materials with the aid of soft x-ray microscopy." Hans Bechtel, Michael Martin, and Markus Raschke, "For the development of Synchrotron Infrared Nano Spectroscopy (SINS)." David Malone. "As the first person all 2400 ALS users contact

  5. 2011 User Meeting Agenda

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

    Agenda Home Agenda Awards Exhibitors Lodging Posters Registration Photo Contest Transportation Workshops This e-mail address is being protected from spambots. You need JavaScript enabled to view it User Meeting Archives Users' Executive Committee The 2011 ALS User Meeting begins registation begins at 07:30 on Monday, October 3, outside the Building 50 Auditorium. The meeting itself will start at 08:25 inside the Building 50 Auditorium; all plenary sessions will also be held at this location.

  6. 2011 User Meeting Workshops

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

    2011 User Meeting Workshops Home Agenda Awards Exhibitors Lodging Posters Registration Photo Contest Transportation Workshops This e-mail address is being protected from spambots. You need JavaScript enabled to view it User Meeting Archives Users' Executive Committee Workshops will follow the end of the plenary sessions on Tuesday and continue through Wednesday.When registering , you will be asked to select the workshop that you plan to attend; this helps organizers plan room assignments and

  7. 2012 User Meeting Workshops

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

    Workshops 2012 ALS User Meeting Workshops Home Agenda Awards Exhibitors Lodging Posters Registration Transportation Workshops This e-mail address is being protected from spambots. You need JavaScript enabled to view it User Meeting Archives Users' Executive Committee Advanced Characterization of Critical Magnetic Materials Catherine Jenkins, Peter Fischer, Elke Arenholz, and David Shuh (LBNL) 67-3111 (Wed.) Automating Tomographic Data Analysis: Transfer, Storage, Processing, and Simulation Dula

  8. Users from Industry

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

    Users from Industry Users from Industry Print The Advanced Light Source (ALS) welcomes industrial users from large and small companies whose projects advance scientific knowledge, investigate the development of new products and manufacturing methods, and/or provide economic benefits and jobs to the economy. The nature of industrial research can be different from traditional university and government sponsored projects, so the ALS has created unique opportunities for new and existing industrial

  9. 2013 User Meeting Awards

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

    3 User Meeting Awards Recipients of the 2013 Users' Executive Committee awards and the Student Poster Competition awards, were presented Tuesday, October 8, at the ALS User Meeting. David A. Shirley Award for Outstanding Scientific Achievement at the ALS 2013-shirley The David A. Shirley Award for Scientific Achievement went to Harald Ade, North Carolina State University, "For achievements in polymer science and in particular the elucidation of the chemical nano-morphology of complex

  10. Cherenkov Light-based Beam Profiling for Ultrarelativistic Electron Beams

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

    Adli, E.; Gessner, S. J.; Corde, S.; Hogan, M. J.; Bjerke, H. H.

    2015-02-09

    We describe a beam profile monitor design based on Cherenkov light emitted from a charged particle beam in an air gap. The main components of the profile monitor are silicon wafers used to reflect Cherenkov light onto a camera lens system. The design allows for measuring large beam sizes, with large photon yield per beam charge and excellent signal linearity with beam charge. Furthermore, the profile monitor signal is independent of the particle energy for ultrarelativistic particles. Different design and parameter considerations are discussed. A Cherenkov light-based profile monitor has been installed at the FACET User Facility at SLAC. Finally,more » we report on the measured performance of this profile monitor.« less

  11. 2001 User Survey Results

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

    Questions and Changes from Previous Years NERSC Information Management (NIM) System Web and Communications Hardware Resources Software Training User Services Comments about...

  12. User account | Jefferson Lab

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

    Log in(active tab) Logon Help User login Username * JLAB/CUE Username Password * JLAB/CUE Password Log in

  13. User Liaison Office

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

    User Liaison Please upgrade your browser. This site's design is only visible in a graphical browser that supports web standards, but its content is accessible to any browser. ...

  14. CNMS User Newsletter

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

    of Standards and Technology (NIST) and he is working towards developing novel scanning force probes using cavity optomechanics. Research Highlights CNMS User Newsletter Page 7...

  15. About the User Program

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

    . All proposals are reviewed for scientific merit by the Program Advisory Committee (PAC). In the case of proprietary proposals, such as the case for Industry, users pay for...

  16. Users from Industry

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

    industrial users from large and small companies whose projects advance scientific knowledge, investigate the development of new products and manufacturing methods, andor...

  17. 2014 NERSC User Survey

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

    User Survey 2014 NERSC User Survey December 17, 2014 by Francesca Verdier Please take a few minutes to fill out NERSC's annual user survey. Your feedback is important because it allows us to judge the quality of our services, give DOE information on how we are doing, and point us to areas in which we can improve. The survey is on the web at the URL: https://www.nersc.gov/news-publications/publications-reports/user-surveys/2014/ and covers the allocation year 2014. Subscribe via RSS Subscribe

  18. 2004 User Survey Results

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

    13 | Next 2004 User Survey Results Table of Contents Response Summary Respondent Demographics Overall Satisfaction and Importance All Satisfaction, Importance and Usefulness...

  19. 2005 User Survey Results

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

    10 | Next 2005 User Survey Results Table of Contents Response Summary Respondent Demographics All Satisfaction, Importance and Usefulness Ratings Hardware Resources Software...

  20. 2003 User Survey Results

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

    10 | Next 2003 User Survey Results Table of Contents Response Summary Respondent Demographics Overall Satisfaction and Importance All Satisfaction Topics and Changes from...

  1. 2012 User Meeting Workshops

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

    Workshops Print 2012 ALS User Meeting Workshops Home Agenda Awards Exhibitors Lodging Posters Registration Transportation Workshops This e-mail address is being protected from...

  2. 2012 User Meeting Agenda

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

    2 User Meeting Agenda Print Agenda Home Agenda Awards Exhibitors Lodging Posters Registration Transportation Workshops This e-mail address is being protected from spambots. You...

  3. SSRL Users' Organization Ballot

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

    in enzymes involved in sulfate activationassimilation and viral proteins that suppress apoptosis. . His research has required extensive use of SSRL beam lines over the past...

  4. KDYNA user's manual

    SciTech Connect (OSTI)

    Levatin, J.A.L.; Attia, A.V.; Hallquist, J.O.

    1990-09-28

    This report is a complete user's manual for KDYNA, the Earth Sciences version of DYNA2D. Because most features of DYNA2D have been retained in KDYNA much of this manual is identical to the DYNA2D user's manual.

  5. SU-E-T-50: Automatic Validation of Megavoltage Beams Modeled for Clinical Use in Radiation Therapy

    SciTech Connect (OSTI)

    Melchior, M; Salinas Aranda, F; Sciutto, S; Dodat, D; Larragueta, N

    2014-06-01

    Purpose: To automatically validate megavoltage beams modeled in XiO 4.50 (Elekta, Stockholm, Sweden) and Varian Eclipse Treatment Planning Systems (TPS) (Varian Associates, Palo Alto, CA, USA), reducing validation time before beam-on for clinical use. Methods: A software application that can automatically read and analyze DICOM RT Dose and W2CAD files was developed using MatLab integrated development environment.TPS calculated dose distributions, in DICOM RT Dose format, and dose values measured in different Varian Clinac beams, in W2CAD format, were compared. Experimental beam data used were those acquired for beam commissioning, collected on a water phantom with a 2D automatic beam scanning system.Two methods were chosen to evaluate dose distributions fitting: gamma analysis and point tests described in Appendix E of IAEA TECDOC-1583. Depth dose curves and beam profiles were evaluated for both open and wedged beams. Tolerance parameters chosen for gamma analysis are 3% and 3 mm dose and distance, respectively.Absolute dose was measured independently at points proposed in Appendix E of TECDOC-1583 to validate software results. Results: TPS calculated depth dose distributions agree with measured beam data under fixed precision values at all depths analyzed. Measured beam dose profiles match TPS calculated doses with high accuracy in both open and wedged beams. Depth and profile dose distributions fitting analysis show gamma values < 1. Relative errors at points proposed in Appendix E of TECDOC-1583 meet therein recommended tolerances.Independent absolute dose measurements at points proposed in Appendix E of TECDOC-1583 confirm software results. Conclusion: Automatic validation of megavoltage beams modeled for their use in the clinic was accomplished. The software tool developed proved efficient, giving users a convenient and reliable environment to decide whether to accept or not a beam model for clinical use. Validation time before beam-on for clinical use was

  6. The PANTHER User Experience

    SciTech Connect (OSTI)

    Coram, Jamie L.; Morrow, James D.; Perkins, David Nikolaus

    2015-09-01

    This document describes the PANTHER R&D Application, a proof-of-concept user interface application developed under the PANTHER Grand Challenge LDRD. The purpose of the application is to explore interaction models for graph analytics, drive algorithmic improvements from an end-user point of view, and support demonstration of PANTHER technologies to potential customers. The R&D Application implements a graph-centric interaction model that exposes analysts to the algorithms contained within the GeoGraphy graph analytics library. Users define geospatial-temporal semantic graph queries by constructing search templates based on nodes, edges, and the constraints among them. Users then analyze the results of the queries using both geo-spatial and temporal visualizations. Development of this application has made user experience an explicit driver for project and algorithmic level decisions that will affect how analysts one day make use of PANTHER technologies.

  7. AIRMaster+ User Manual | Department of Energy

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

    User Manual AIRMaster+ User Manual This user manual is designed to help users understand the AIRMaster+ compressed air software. AIRMaster+ User Manual (2000) (2.39

  8. Interactive Beam-Dynamics Program

    Energy Science and Technology Software Center (OSTI)

    2001-01-08

    TRACE3D is an interactive program that calculates the envelopes of a bunched beam, including linear space-charge forces, through a user-defined system. The transport system may consist of the following elements: drift, thin lens, quadrupole, permanent magnet quadrupole, solenoid, doublet, triplet, bending magnet, edge angle (for bend), RF gap, radio-frequency-quadrupole cell, RF cavity, coupled-cavity tank, user-desired element, coordinate rotation, and identical element. The beam is represented by a 6X6 matrix defining a hyper-ellipsoid in six-dimensional phasemore » space. The projection of this hyperellipsoid on any two-dimensional plane is an ellipse that defines the boundary of the beam in that plane.« less

  9. Beam imaging diagnostics for heavy ion beam fusion experiments

    SciTech Connect (OSTI)

    Bieniosek, F.M.; Prost, L.; Ghiorso, W.

    2003-05-01

    We are developing techniques for imaging beams in heavy-ion beam fusion experiments in the HIF-VNL in 2 to 4 transverse dimensions. The beams in current experiments range in energy from 50 keV to 2 MeV, with beam current densities from <10 to 200 mA/cm{sup 2}, and pulse lengths of 4 to 20 {micro}s. The beam energy will range up to 10 MeV in near-future beam experiments. The imaging techniques, based on kapton films and optical scintillators, complement and, in some cases, may replace mechanical slit scanners. The kapton film images represent a time-integrated image on the film exposed to the beam. The optical scintillator utilizes glass and ceramic scintillator material imaged by a fast, image-intensified CCD-based camera. We will discuss the techniques, results, and plans for implementation of the diagnostics on the beam experiments.

  10. User`s guide to MIDAS

    SciTech Connect (OSTI)

    Tisue, S.A.; Williams, N.B.; Huber, C.C.; Chun, K.C.

    1995-12-01

    Welcome to the MIDAS User`s Guide. This document describes the goals of the Munitions Items Disposition Action System (MIDAS) program and documents the MIDAS software. The main text first describes the equipment and software you need to run MIDAS and tells how to install and start it. It lists the contents of the database and explains how it is organized. Finally, it tells how to perform various functions, such as locating, entering, viewing, deleting, changing, transferring, and printing both textual and graphical data. Images of the actual computer screens accompany these explanations and guidelines. Appendix A contains a glossary of names for the various abbreviations, codes, and chemicals; Appendix B is a list of modem names; Appendix C provides a database dictionary and rules for entering data; and Appendix D describes procedures for troubleshooting problems associated with connecting to the MIDAS server and using MIDAS.

  11. User Authentication Policy | Argonne Leadership Computing Facility

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

    Users of the Argonne production systems are required to use a CRYPTOCard one time password... are: Something you know (for example, a password); Something you have (for example, an ID ...

  12. BEAM PROPAGATOR

    Energy Science and Technology Software Center (OSTI)

    003691MLTPL00 Beam Propagator for Weather Radars, Modules 1 and 2 http://www.exelisvis.com/ProductsServices/IDL.aspx

  13. Beam History

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

    Beam Status Beam History Print Beamline History Request Form To request a beam current histograph from the ALS storage ring beam histograph database, select the year, month, and day, then click on "Submit Request". Histographs are available as far back as February 2, 1994. Year 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day 01 02 03 04 05 06 07 08 09 10 11 12 13

  14. LANSCE | Users | LUG

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

    LUG-EC 2016 LUG EC Meeting 2015 LUG EC Meeting 2014 LUG EC Summary and Charge 2014 LUG EC Meeting 2013 LUG EC Meeting LUG Charter LUG Election LUG 2015 Meeting LUG 2012 Meeting Rosen Scholar Rosen Prize Users dotline LANSCE User Group (LUG) 2016 LUG Executive Committee Election Election is now closed. Thank you for voting! Results will be announced soon. The Executive Committee of the LANSCE User Group (LUG-EC) is seeking new representatives to serve on the Executive Committee beginning CY 2016.

  15. NERSC Usage and User Demographics

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

    Usage Demographics Users and Projects Through the Years Careers Visitor Info Web Policies Home » About » Usage and User Demographics NERSC Usage and User Demographics Usage Demographics Number of NERSC Users and Projects Through the Years Number of NERSC Users and Projects Through the Years Read More » Last edited: 2015-03-02 16:21:25

  16. User' Software Manual

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

    MM-Group Home MMG Advisory Committees 4-ID-D Home Recent Publications Beamline Info Optics Instrumentation Software User Info FAQs 4-ID-D Beamline Software Manual Introduction...

  17. User Liaison Office

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

    Office Space User space is available in the ARC, reserve space here. arc-thumb.jpg Click to see Virtual Tour 12000 Jefferson Avenue, Newport News, VA 23606 Phone: (757) 269-7255...

  18. User account | Jefferson Lab

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

    Error message Access denied. You must log in to view this page. Log in(active tab) Logon Help User login Username * JLAB/CUE Username Password * JLAB/CUE Password Log in

  19. ARM User Survey Report

    SciTech Connect (OSTI)

    Roeder, LR

    2010-06-22

    The objective of this survey was to obtain user feedback to, among other things, determine how to organize the exponentially growing data within the Atmospheric Radiation Measurement (ARM) Climate Research Facility, and identify users’ preferred data analysis system. The survey findings appear to have met this objective, having received approximately 300 responses that give insight into the type of work users perform, usage of the data, percentage of data analysis users might perform on an ARM-hosted computing resource, downloading volume level where users begin having reservations, opinion about usage if given more powerful computing resources (including ability to manipulate data), types of tools that would be most beneficial to them, preferred programming language and data analysis system, level of importance for certain types of capabilities, and finally, level of interest in participating in a code-sharing community.

  20. CNMS User Newsletter

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

    systems. Access is provided at no cost to users for research that is in the public do- main and intended for publica on in the open literature. The submission deadline is...

  1. User Data Forum Presentations

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

    M08: Databases and Data analytic frameworks at NERSC June 16, 2014 | Author(s): Yushu Yao, NERSC User Services Group | Download File: M08-20140616-NERSC-Data-Forum-DB-SciDB-Talk-v2...

  2. User Data Forum Presentations

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

    Presentations User Data Forum Presentations Sort by: Default | Name | Date (low-high) | ... M02: The Future of Data and Scientific Workflow June 16, 2014 | Author(s): Michael Wilde, ...

  3. General User Proposals (GUPs)

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

    or until the number of shifts recommended by the Proposal Study Panels (PSP) for the life of the proposal have been used. Users may decide whether to submit a new proposal or...

  4. CNMS User Newsletter

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

    at the 4th annual Na onal User Facility Science Expo for the U.S. House of Representa ves in the foyer of the Ray- burn House Office Building, Capitol Hill Washington D.C.....

  5. 2012 User Meeting Agenda

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

    the Amorphous-to-Crystalline Transitions in CaCO3 Biominerals, with 20-nm Resolution Pupa Gilbert, University of Wisconsin 13:55 User Services Update Sue Bailey, LBNL 14:10...

  6. User Accounts (Logins)

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

    A user is given a username (also known as a login name) and associated password that permits them to access NERSC resources. This usernamepassword pair may be used by a single ...

  7. NIM Guide for Users

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

    The NERSC Information Management (NIM) system is a web portal that contains user, login ... Logging In To log into the NIM system, point your web browser to the URL http:...

  8. Programs & User Facilities

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

    Science Programs » Office of Science » Programs & User Facilities Programs & User Facilities Enabling remarkable discoveries, tools that transform our understanding of energy and matter and advance national, economic, and energy security Advanced Scientific Computing Research Applied Mathematics Co-Design Centers Exascale Co-design Center for Materials in Extreme Environments (ExMatEx) Center for Exascale Simulation of Advanced Reactors (CESAR) Center for Exascale Simulation of

  9. VOLTTRON: User Guide

    SciTech Connect (OSTI)

    Lutes, Robert G.; Katipamula, Srinivas; Akyol, Bora A.; Tenney, Nathan D.; Haack, Jereme N.; Monson, Kyle E.; Carpenter, Brandon J.

    2014-04-24

    This document is a user guide for the deployment of the Transactional Network platform and agent/application development within the VOLTTRON. The intent of this user guide is to provide a description of the functionality of the Transactional Network Platform. This document describes how to deploy the platform, including installation, use, guidance, and limitations. It also describes how additional features can be added to enhance its current functionality.

  10. New Users Guide

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

    Storing and Retrieving Data Advanced Usage Examples Charging Storage Statistics Troubleshooting I/O Resources for Scientific Applications at NERSC Optimizing I/O performance on the Lustre file system I/O Formats Science Databases Sharing Data Transferring Data Unix Groups at NERSC Unix File Permissions Application Performance Data & Analytics Job Logs & Statistics Training & Tutorials Software Policies User Surveys NERSC Users Group Help Staff Blogs Request Repository Mailing List

  11. ALS Users' Association Charter

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

    Users' Association Charter Print The purpose of the Advanced Light Source Users' Association (ALSUA) is to provide an organized framework for the interaction between those who use the Advanced Light Source (ALS) at the Lawrence Berkeley Laboratory (LBL) for their research and the ALS management, as well as to provide a channel for communication with other synchrotron radiation laboratories and, on suitable occasions, with federal agencies. The ALSUA, representing the research workers, will be in

  12. ALS Users' Association Charter

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

    Users' Association Charter Print The purpose of the Advanced Light Source Users' Association (ALSUA) is to provide an organized framework for the interaction between those who use the Advanced Light Source (ALS) at the Lawrence Berkeley Laboratory (LBL) for their research and the ALS management, as well as to provide a channel for communication with other synchrotron radiation laboratories and, on suitable occasions, with federal agencies. The ALSUA, representing the research workers, will be in

  13. ALS Users' Association Charter

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

    ALS Users' Association Charter Print The purpose of the Advanced Light Source Users' Association (ALSUA) is to provide an organized framework for the interaction between those who use the Advanced Light Source (ALS) at the Lawrence Berkeley Laboratory (LBL) for their research and the ALS management, as well as to provide a channel for communication with other synchrotron radiation laboratories and, on suitable occasions, with federal agencies. The ALSUA, representing the research workers, will

  14. 2011 User Meeting Workshops

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

    Workshops Home Agenda Awards Exhibitors Lodging Posters Registration Photo Contest Transportation Workshops This e-mail address is being protected from spambots. You need JavaScript enabled to view it User Meeting Archives Users' Executive Committee Workshops will follow the end of the plenary sessions on Tuesday and continue through Wednesday.When registering , you will be asked to select the workshop that you plan to attend; this helps organizers plan room assignments and refreshments.

  15. LANSCE | Users | Rosen Prize

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

    Rosen Prize Current Recipient Past Recipients Call for Nominations Users dotline The Louis Rosen Prize Adam T. Holley Adam T. Holley Named 24th Rosen Prize Recipient The LANSCE User Group Executive Committee is pleased to announce that Adam Holley has been awarded the 2013 Rosen Prize for his doctoral thesis on "Ultracold Neutron Polarimetry in a Measurement of the β Asymmetry". His work demonstrated excellence in a number of facets the selection committee considered, including

  16. LANSCE | Users | LUG | Topical User Meeting Agenda

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

    Agenda (some presentations are included below) Sunday 4:00pm-6:00pm Registration: Best Western Monday 7:30am Registration: LANSCE, Bldg 1 Facility Presentations | LANSCE, Rosen Auditorium 8:15am-8:22am LANSCE User Group Executive Committee Welcome: Steve Conradson 2011 LUG-EC Chair 8:23am-8:30am Worshop Goals/Processes Kurt Schoenberg LANSCE Facility Director 8:30am-9:00am LANSCE Overview and Future Opportunities Kurt Schoenberg LANSCE Facility Director 9:00am-9:30am Nuclear Neutron Science at

  17. Restoration Prioritization Toolset: Documentation and Users Guides 2007

    SciTech Connect (OSTI)

    Judd, Chaeli; Woodruff, Dana L.; Thom, Ronald M.; Anderson, Michael G.; Borde, Amy B.

    2007-10-26

    This users guide provides technical background and details on the Restoration Prioritization Toolset developed for GoMRC as well as instructions for use.

  18. Weekly User Schedule

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

    for special operations use of the "scrubbing" shift should be sent directly to Warren Byrne (486-7517) by 1:00 p.m. Friday. Any requests for changes in beam energy, bucket fill...

  19. User Facility Science Highlights

    Office of Science (SC) Website

    In this experiment, a 5.5-GeV beam of electrons was directed onto a target of liquid hydrogen, which has a single proton in its nucleus. The researchers collected data on...

  20. 2011 NERSC User Survey (Read Only)

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

    2010/2011 User Survey Results Survey Text 2009/2010 User Survey Results 2008/2009 User Survey Results 2007/2008 User Survey Results 2006 User Survey Results 2005 User Survey Results 2004 User Survey Results 2003 User Survey Results 2002 User Survey Results 2001 User Survey Results 2000 User Survey Results 1999 User Survey Results 1998 User Survey Results HPC Requirements for Science HPC Workshop Reports NERSC Staff Publications & Presentations Journal Cover Stories Galleries facebook icon

  1. Proceedings of the seventeenth LAMPF Users Group meeting

    SciTech Connect (OSTI)

    Bradbury, J.N.

    1984-04-01

    The seventeenth annual LAMPF Users Group meeting was held November 7-8, 1983, at the Clinton P. Anderson Meson Physics Facility. The program included a number of invited talks on various aspects of nuclear and particle physics as well as status reports on LAMPF. A panel discussion on the LAMPF II concept provided an exchange of views among an advisory group, Users, and LAMPF staff. The LAMPF working groups met and discussed plans for each of the secondary beam lines.

  2. National Laser User Facilities Program | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration | (NNSA) National Laser User Facilities Program National Laser Users' Facility Grant Program Overview The Laboratory for Laser Energetics (LLE) at the University of Rochester (UR) was established in 1970 to investigate the interaction of high power lasers with matter. It is home of the Omega Laser Facility that includes OMEGA, a 30 kJ UV 60-beam laser system (at a wavelength of 0.35 mm) and OMEGA EP, a four-beam, high-energy, laser system with up to 26 kJ UV. Two of the OMEGA

  3. NERSC User Announcements RSS Feed

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

    Announcements RSS Feed NERSC User Announcements RSS Feed June 30, 2014 by Richard Gerber NERSC's User Announcements (not these "Featured Announcements") are now available as an RSS...

  4. User account | The Ames Laboratory

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

    User account User account Primary tabs Log in Request new password(active tab) Username or e-mail address * E-mail new password

  5. Beam History

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

    Beam History Print Beamline History Request Form To request a beam current histograph from the ALS storage ring beam histograph database, select the year, month, and day, then click on "Submit Request". Histographs are available as far back as February 2, 1994. Year 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17

  6. Beam History

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

    Beam History Print Beamline History Request Form To request a beam current histograph from the ALS storage ring beam histograph database, select the year, month, and day, then click on "Submit Request". Histographs are available as far back as February 2, 1994. Year 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Day 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17

  7. GRSAC Users Manual

    SciTech Connect (OSTI)

    Ball, S.J.; Nypaver, D.J.

    1999-02-01

    An interactive workstation-based simulation code (GRSAC) for studying postulated severe accidents in gas-cooled reactors has been developed to accommodate user-generated input with ''smart front-end'' checking. Code features includes on- and off-line plotting, on-line help and documentation, and an automated sensitivity study option. The code and its predecessors have been validated using comparisons with a variety of experimental data and similar codes. GRSAC model features include a three-dimensional representation of the core thermal hydraulics, and optional ATWS (anticipated transients without scram) capabilities. The user manual includes a detailed description of the code features, and includes four case studies which guide the user through four different examples of the major uses of GRSAC: an accident case; an initial conditions setup and run; a sensitivity study; and the setup of a new reactor model.

  8. 2016 CAMD User Meeting

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

    CAMD 2016 User Meeting Friday, April 29th, 2016 CAMD, 6980 Jefferson Highway, Baton Rouge, LA 70806 The CAMD 2016 User Meeting will be held on Friday, April 29th at CAMD, 6980 Jefferson Highway, Baton Rouge, LA 70806. There will be a "Celebration of MPW" in the morning, coinciding with a poster session in the Experimental Hall starting at 10:30 AM. Beamline scientists will be on hand to explain the new features of the multi-pole wiggler beamlines. Lunch will be provided before the

  9. User Submitted Research Citations

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

    User Submitted Research Citations User Submitted Research Citations Sort by: Default | Name | Date (low-high) | Date (high-low) | Source | Category Picture1 Miro Conjugation-Driven "Reverse Mars-van Krevelen"-Type Radical Mechanism for Low-Temperature C-O Bond Activation June 9, 2016 | Author(s): Alexander V. Mironenko. Dionisios G. Vlachos | Source: Mironenko, Alexander V., and Dionisios G. Vlachos. "Conjugation-driven "Reverse Mars-van Krevelen"-type Radical Mechanism

  10. DOE Designated User Facilities | Department of Energy

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

    Designated User Facilities DOE Designated User Facilities DOE Designated User Facilities Sept 30 2015 More Documents & Publications Microsoft Word - DesignatedUserFacilitiesApri...