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1

Relativistic Heavy Ion Collider  

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

Relativistic Heavy Ion Collider Relativistic Heavy Ion Collider managed for the U.S. Department of Energy by Brookhaven Science Associates, founded by Stony Brook University and Battelle. managed for the U.S. Department of Energy by Brookhaven Science Associates, a company founded by Stony Brook University and Battelle 07/07 Brookhaven National Laboratory Funded by the U.S. Department of Energy, Brookhaven National Laboratory is a multipurpose research institution located on a 5,300-acre site on Long Island, New York. Six Nobel Prize-winning discoveries have been made at Brookhaven Lab. The Laboratory operates large-scale scientific facilities and performs research in physics, chemistry, biology, medicine, applied science, and

2

Jets in heavy ion collisions with ATLAS  

E-Print Network [OSTI]

The energy loss of high-p_T partons provides insight into the transport properties of the medium created in relativistic heavy ion collisions. Evidence for this energy loss was first experimentally established through observation of high-p_T hadron suppression at RHIC. More recently, measurements of fully reconstructed jets have been performed at the LHC. In this summary the latest experimental results from the ATLAS collaboration on jet suppression are presented. In particular the jet suppression in inclusive jet yields, path length dependence of the jet suppression, photon-jet and Z^0-jet correlations, heavy flavor suppression, and jet fragmentation are discussed. These results establish qualitative features of the jet quenching mechanism as experimental fact and provide constraints on models of jet energy loss.

Martin Spousta; for the ATLAS Collaboration

2012-11-14T23:59:59.000Z

3

RHIC | Relativistic Heavy Ion Collider  

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

Relativistic Heavy Ion Collider Relativistic Heavy Ion Collider Photo of LINAC The Relativistic Heavy Ion Collider (RHIC) is a world-class particle accelerator at Brookhaven National Laboratory where physicists are exploring the most fundamental forces and properties of matter and the early universe. RHIC accelerates beams of particles (e.g., the nuclei of heavy atoms such as gold) to nearly the speed of light, and smashes them together to recreate a state of matter thought to have existed immediately after the Big Bang some 13.8 billion years ago. STAR and PHENIX, two large detectors located around the 2.4-mile-circumference accelerator, take "snapshots" of these collisions to reveal a glimpse of the basic constituents of visible matter, quarks and gluons. Understanding matter at

4

RHIC | Relativistic Heavy Ion Collider  

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

Brookhaven National Laboratory Brookhaven National Laboratory search U.S. Department of Energy logo Home RHIC Science News Images Videos For Scientists Björn Schenke 490th Brookhaven Lecture, 12/18 Join Björn Schenke of Brookhaven Lab's Physics Department for the 490th Brookhaven Lecture, titled 'The Shape and Flow of Heavy Ion Collisions,' on Wednesday, Dec. 18, at 4 p.m. in Berkner Hall. droplets Tiny Drops of Hot Quark Soup-How Small Can They Be? New analyses indicate that collisions of small particles with large gold nuclei at the Relativistic Heavy Ion Collider may be serving up miniscule servings of hot quark-gluon plasma. RHIC Physics RHIC is the first machine in the world capable of colliding ions as heavy as gold. The Spin Puzzle RHIC is the world's only machine capable of colliding beams of polarized

5

HEAVY ION PHYSICS WITH THE ATLAS DETECTOR.  

SciTech Connect (OSTI)

Soon after the LHC is commissioned with proton beams the ATLAS experiment will begin studies of Pb-Pb collisions with a center of mass energy of {radical}s{sub NN} = 5.5 TeV. The ATLAS program is a natural extension of measurements at RHIC in a direction that exploits the higher LHC energies and the superb ATLAS calorimeter and tracking coverage. At LHC energies, collisions will be produced with even higher energy density than observed at RHIC. The properties of the resulting hot medium can be studied with higher energy probes, which are more directly interpreted through modification of jet properties emerging from these collisions, for example. Other topics which are enabled by the 30-fold increase in center of mass energy include probing the partonic structure of nuclei with hard photoproduction (in UltraPeripheral collisions) and in p-Pb collisions. Here we report on evaluation of ATLAS capabilities for Heavy Ion Physics.

WHITE, S.

2005-02-05T23:59:59.000Z

6

Heavy Flavour Physics at CMS and ATLAS  

E-Print Network [OSTI]

Prospects for heavy flavour studies with the CMS and ATLAS detectors are presented. Many studies are aimed for early LHC data, taking advantage of the large $b$ production cross-section. Rare decay studies as the $B_s \\to \\mu^+\\mu^-$ decay have also been performed.

L. Wilke; for the CMS; ATLAS Collaborations

2009-05-26T23:59:59.000Z

7

Soft photons from relativistic heavy ion collisions  

Science Journals Connector (OSTI)

Production of soft photons in relativistic heavy ion collisions due to bremsstrahlung processes in quark matter and hadronic matter is studied. The contribution of pion-driven processes is found to dominate the yield. 1996 The American Physical Society.

Pradip Kumar Roy, Dipali Pal, Sourav Sarkar, Dinesh Kumar Srivastava, and Bikash Sinha

1996-05-01T23:59:59.000Z

8

RHIC | Relativistic Heavy Ion Collider  

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

breakthrough accelerator could collide electrons with heavy ions or protons at nearly the speed of light to create "snapshots" of the force binding all visible matter. Accelerator...

9

Jets in relativistic heavy ion collisions  

SciTech Connect (OSTI)

Several aspects of hard and semihard QCD jets in relativistic heavy ion collisions are discussed, including multiproduction of minijets and the interaction of a jet with dense nuclear matter. The reduction of jet quenching effect in deconfined phase of nuclear matter is speculated to provide a signature of the formation of quark gluon plasma. HIJING Monte Carlo program which can simulate events of jets production and quenching in heavy ion collisions is briefly described. 35 refs., 13 figs.

Wang, Xin-Nian; Gyulassy, M.

1990-09-01T23:59:59.000Z

10

RHIC | Physics of the Relativistic Heavy Ion Collider  

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

The Physics of RHIC Physicists from around the world are using the Relativistic Heavy Ion Collider to explore some of Nature's most basic -- and intriguing -- ingredients and...

11

Hadron production in heavy relativistic systems  

E-Print Network [OSTI]

We investigate particle production in heavy-ion collisions at RHIC energies as function of incident energy, and centrality in a three-sources Relativistic Diffusion Model. Pseudorapidity distributions of produced charged hadrons in Au + Au and Cu + Cu collisions at sqrt(s_NN) = 19.6 GeV, 62.4 GeV, 130 GeV and 200 GeV show an almost equilibrated midrapidity source that tends to increase in size towards higher incident energy, and more central collisions. It may indicate quark-gluon plasma formation prior to hadronization.

Rolf Kuiper; Georg Wolschin

2007-03-07T23:59:59.000Z

12

A relativistic cascade for heavy ion collisions  

SciTech Connect (OSTI)

Au on Au collisions at the BNL/AGS (11.6 GeV-A/c) are expected to produce a short-lived state of matter at high baryon density. If the baryons reach sufficiently high density, they may produce a quark-gluon plasma (QGP). The signals from a QGP phase may be difficult to distinguish from those of ordinary hadronic matter. The authors have constructed a relativistic cascade (ARC) for hadrons in an attempt to model the dynamics of ordinary hadronic matter in a heavy ion collision, in the hopes that deviations from the cascade results may indicate new physics. In this contribution the authors discuss the formation of high baryon density matter, and its effect on antiproton production.

Schlagel, T.J.; Pang, Y.; Kahana, S.H.

1994-07-01T23:59:59.000Z

13

Brookhaven National Laboratory The Relativistic Heavy Ion Collider (RHIC)  

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

Relativistic Heavy Ion Collider (RHIC) Relativistic Heavy Ion Collider (RHIC) An Exciting Beginning and a Compelling Future At the Relativistic Heavy Ion Collider (RHIC), a world-class particle accelerator at Brookhaven National Laboratory, physicists are exploring the most fundamental forces and properties of matter and the early universe, with important implications for our understanding of the world around us. Operated with funding from the U.S. Department of Energy's Office of Science, the Relativistic Heavy Ion Collider (RHIC), was designed to recreate a state of matter thought to have existed immediately after the Big Bang some 13 billion years ago, and to investigate how the proton gets its spin and intrinsic magnetism from its quark and gluon constituents. Large detectors located

14

Unitarity and pion production in relativistic heavy-ion collisions  

SciTech Connect (OSTI)

Pion production in relativistic heavy-ion collisions is examined. It is shown that the commonly employed effective-velocity theory is incorrect. A formulation based on the unitarity is presented. 8 refs., 1 figs.

Liu, L.C.

1991-01-01T23:59:59.000Z

15

Ratios of heavy baryons to heavy mesons in relativistic nucleus-nucleus collisions  

E-Print Network [OSTI]

Heavy baryon/meson ratios Lambda(c)/D(0) and Lambda(b)/(B) over bar (0) in relativistic heavy ion collisions are studied in the quark coalescence model. For heavy baryons, we include production from coalescence of heavy quarks with free light quarks...

Oh, Yongseok; Ko, Che Ming; Lee, Su Houng; Yasui, Shigehiro.

2009-01-01T23:59:59.000Z

16

RELATIVISTIC HEAVY-ION PHYSICS WITHOUT NUCLEAR CONTACT  

E-Print Network [OSTI]

RELATIVISTIC HEAVY-ION PHYSICS WITHOUT NUCLEAR CONTACT The large electromagnetic field generated physics research--for example, for investigating nuclear structure, hadronic structure, atomic physics Berkeley Laboratory--it became clear that heavy-ion physics without nuclear contact could be very useful

Bertulani, Carlos A. - Department of Physics and Astronomy, Texas A&M University

17

ATLAS ATLAS ATLAS ATLAS  

E-Print Network [OSTI]

ATLAS ATLAS ATLAS ATLAS Status of Optical Electronics K.K. Gan Ohio State University June 14, 2000 ATLAS Pixel Week June 14, 2000 ATLAS Pixel Week Status of Optical Electronics (page 1) K.K. Gan Ohio State University #12; ATLAS ATLAS ATLAS ATLAS Opto­electronics Team Ohio State University: K.K. Gan

Gan, K. K.

18

ATLAS ATLAS ATLAS ATLAS  

E-Print Network [OSTI]

ATLAS ATLAS ATLAS ATLAS Status of Optical Electronics K.K. Gan Ohio State University February 1, 2000 ATLAS Pixel Week February 1, 2000 ATLAS Pixel Week Status of Optical Electronics (page 1) K.K. Gan Ohio State University #12; ATLAS ATLAS ATLAS ATLAS VCSEL Driver Chip ffl VDC converts LVDS signal

Gan, K. K.

19

ATLAS ATLAS ATLAS ATLAS  

E-Print Network [OSTI]

ATLAS ATLAS ATLAS ATLAS Status of Optical Electronics K.K. Gan Ohio State University September 26, 2000 ATLAS Pixel Week September 26, 2000 ATLAS Pixel Week Status of Optical Electronics (page 1) K.K. Gan Ohio State University #12; ATLAS ATLAS ATLAS ATLAS Opto­electronics Team Ohio State University: K

Gan, K. K.

20

Multiphase transport model for relativistic heavy ion collisions  

E-Print Network [OSTI]

of these results to experimental data, mainly from heavy ion collisions at the BNL Relativistic Heavy Ion Collider, are then made in order to extract information on the properties of the hot dense matter formed in these collisions. DOI: 10.1103/PhysRevC.72... quark and a diquark with weights according to relations from the SU(6) quark model [71], and the diquark is then decomposed into two quarks. The quark and diquark masses are taken to be the same as in the PYTHIA program [59], e.g.,mu = 5.6,md = 9.9...

Lin, ZW; Ko, Che Ming; Li, Ba; Zhang, B.; Pal, S.

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "atlas relativistic heavy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Femtoscopy in Relativistic Heavy Ion Collisions: Two Decades of Progress  

E-Print Network [OSTI]

Analyses of two-particle correlations have provided the chief means for determining spatio-temporal characteristics of relativistic heavy ion collisions. We discuss the theoretical formalism behind these studies and the experimental methods used in carrying them out. Recent results from RHIC are put into context in a systematic review of correlation measurements performed over the past two decades. The current understanding of these results is discussed in terms of model comparisons and overall trends.

Mike Lisa; Scott Pratt; Ron Soltz; Urs Wiedemann

2005-09-06T23:59:59.000Z

22

Production of bound {$?^{+}?^{-}$}-systems in relativistic heavy ion collisions  

E-Print Network [OSTI]

Dimuonium (the bound system of two muons, $\\mu^+\\mu^-$-atom) has not been observed yet. In this paper we discuss the electromagnetic production of dimuonium at RHIC and LHC in relativistic heavy ion collisions. The production of parastates is analyzed in the equivalent photon approximation. For the treatment of orthostates, we develop a three photon formalism. We determine the production rates at RHIC and LHC with an accuracy of a few percent and discuss problems related to the observation of dimuonium.

I. F. Ginzburg; U. D. Jentschura; S. G. Karshenboim; F. Krauss; V. G. Serbo; G. Soff

1998-05-19T23:59:59.000Z

23

Relativistic corrections to heavy quark fragmentation to S-wave heavy mesons  

Science Journals Connector (OSTI)

The relativistic corrections of order v2 to the fragmentation functions for the heavy quark to S-wave heavy quarkonia are calculated in the framework of the nonrelativistic quantum chromodynamics factorization formula. We derive the fragmentation functions by using the Collins-Soper definition in both the Feynman gauge and the axial gauge. We also extract them through the process Z0?Hqq in the limit MZ/m??. We find that all results obtained by these two different methods and in different gauges are the same. We estimate the relative size of the relativistic corrections to the fragmentation functions.

Wen-long Sang, Lan-fei Yang, and Yu-qi Chen

2009-07-23T23:59:59.000Z

24

Modeling and Analysis of Ultra-Relativistic Heavy-Ion Collisions  

SciTech Connect (OSTI)

This document contains the final report for DOE grant DE-FG02-03ER41239: Modeling and Analysis of Ultra-Relativistic Heavy-Ion Collisions

Bass, Steffen A.

2008-06-02T23:59:59.000Z

25

ATLAS ATLAS ATLAS ATLAS  

E-Print Network [OSTI]

for fibres ffl base \\Pi deposit gold traces for wire bonding, VCSEL and PIN placement December 1, 1999 ATLAS ATLAS ATLAS ATLAS Plan ffl use Hybrid Tek to fabricate bases with alumina and deposit thin gold tracesATLAS ATLAS ATLAS ATLAS Status of Alternative Optical Package R&D K.K. Gan Ohio State University

Gan, K. K.

26

Antiflow of kaons in relativistic heavy ion collisions  

E-Print Network [OSTI]

, 034902 ~1999!. @11# G.Q. Li and C.M. Ko, Phys. Rev. C 54, R2159 ~1996!; G. @29# G.E. Brown, C.B. Dover, P.B. Siegel, and W. Weise, Phys. Rev. Lett. 60, 2723 ~1988!. @30# S.A. Voloshin, Phys. Rev. C 55, R1630 ~1997!. @31# A.M. Poskanzer and S....A. Voloshin, Phys. Rev. C 58, 1671 RAPID COMMUNICATIONS ANTIFLOW OF KAONS IN RELATIVISTIC HEAVY ION . . . PHYSICAL REVIEW C 62 061903~R! Song, B.A. Li, and C.M. Ko, Nucl. Phys. A646, 481 ~1999!. @12# J.R. Ritman et al., FOPI Collaboration, Z. Phys. A 352...

Pal, S.; Ko, Che Ming; Lin, ZW; Zhang, B.

2000-01-01T23:59:59.000Z

27

Pion flow and antiflow in relativistic heavy-ion collisions  

E-Print Network [OSTI]

. Pang, T. Schlagel, and S. Wang, Phys. Rev. Lett. 74, 4406 ~1995!. @6# B.A. Li and C.M. Ko, Phys. Rev. C 52, 2037 ~1995!. @7# P. Danielewicz and G. Odyniec, Phys. Lett. 157B, 146 ~1985!. FIG. 4. The transverse momentum dependence of the strength R... are ex- pected to be useful for detailed experimental studies of pion flow and antiflow in relativistic heavy-ion collisions. We would like to thank P. Danielewicz and G.Q. Li for helpful discussions. B.A.L. also acknowledges the kind hos- pitality...

Li, Bao-An; Ko, Che Ming.

1996-01-01T23:59:59.000Z

28

ATLAS ATLAS ATLAS ATLAS  

E-Print Network [OSTI]

\\Pi deposit gold traces for wire bonding, VCSEL and PIN placements June 13, 2000 ATLAS Pixel WeekATLAS ATLAS ATLAS ATLAS Status of Alternative Optical Package R&D K.K. Gan Ohio State University June 13, 2000 ATLAS Pixel Week Outline of Talk ffl Introduction ffl Status ffl Plan June 13, 2000 ATLAS

Gan, K. K.

29

ATLAS ATLAS ATLAS ATLAS  

E-Print Network [OSTI]

traces August 10, 2000 DPF2000 A Novel Optical Package for the ATLAS Pixel Detector (page 8) K.K. GanATLAS ATLAS ATLAS ATLAS A Novel Optical Package for the ATLAS Pixel Detector K.K. Gan The Ohio Summary August 10, 2000 DPF2000 A Novel Optical Package for the ATLAS Pixel Detector (page 1) K.K. Gan

Gan, K. K.

30

ATLAS ATLAS ATLAS ATLAS  

E-Print Network [OSTI]

ATLAS ATLAS ATLAS ATLAS Status of Alternative Optical Package R&D K.K. Gan Ohio State University September 22, 1999 ATLAS Week Outline of Talk ffl SCT optical package ffl Alternative optical package ffl Status ffl Plans September 22, 1999 ATLAS Week Status of Alternative Optical Package R&D (page 1) K

Gan, K. K.

31

ATLAS ATLAS ATLAS ATLAS  

E-Print Network [OSTI]

ATLAS ATLAS ATLAS ATLAS Status of DORIC Test System K.K. Gan Ohio State University November 29, 1999 ATLAS Pixel Week Outline of Talk ffl Introduction ffl Fixed Data Pattern Testing ffl Pseudo­random Data Pattern Testing ffl Quick Look of DORIC­P November 29, 1999 ATLAS Pixel Week Status of DORIC Test

Gan, K. K.

32

ATLAS ATLAS ATLAS ATLAS  

E-Print Network [OSTI]

ATLAS ATLAS ATLAS ATLAS Status of Optical Package Development K.K. Gan Ohio State University December 4, 1999 ATLAS Week Outline of Talk ffl Marconi Package ffl Taiwan Package ffl OSU Package December 4, 1999 ATLAS Week Status of Optical Package Development (page 1) K.K. Gan Ohio State University #12

Gan, K. K.

33

Relativistic Heavy Ion Collider | The Case for Continuing Operations  

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

The Case for Continuing RHIC Operations The Case for Continuing RHIC Operations The Relativistic Heavy Ion Collider (RHIC) - the nation's only remaining particle collider, located at Brookhaven National Laboratory - has made a series of landmark discoveries and continuing breakthroughs in science and technology. One major accomplishment has been RHIC's ability to recreate and study in detail a type of matter that last existed at the beginning of the universe to better understand the strongest force in nature - the force that holds together the fundamental particles that make up 99 percent of visible matter in the universe today, everything from stars to planets to people. In addition to giving us a new way to explore and understand the nature of the early universe and the force that holds together ordinary matter, research at RHIC has revealed stunning

34

Consequences of energy conservation in relativistic heavy-ion collisions  

E-Print Network [OSTI]

Complete characterization of particle production and emission in relativistic heavy-ion collisions is in general not feasible experimentally. This work demonstrates, however, that the availability of essentially complete pseudorapidity distributions for charged particles allows for a reliable estimate of the average transverse momenta and energy of emitted particles by requiring energy conservation in the process. The results of such an analysis for Au+Au collisions at sqrt{s_{NN}}= 130 and 200 GeV are compared with measurements of mean-p_T and mean-E_T in regions where such measurements are available. The mean-p_T dependence on pseudorapidity for Au+Au collisions at 130 and 200 GeV is given for different collision centralities.

B. B. Back

2005-08-15T23:59:59.000Z

35

Strangelet Search at the BNL Relativistic Heavy Ion Collider  

SciTech Connect (OSTI)

We have searched for strangelets in a triggered sample of 61 million central (top 4percent) Au+Au collisions at sqrt sNN = 200 GeV near beam rapidities at the STAR solenoidal tracker detector at the BNL Relativistic Heavy Ion Collider. We have sensitivity to metastable strangelets with lifetimes of order>_0.1 ns, in contrast to limits over ten times longer in BNL Alternating Gradient Synchrotron (AGS) studies and longer still at the CERN Super Proton Synchrotron (SPS). Upper limits of a few 10-6 to 10-7 per central Au+Au collision are set for strangelets with mass>~;;30 GeV/c2.

Ritter, Ha

2005-11-27T23:59:59.000Z

36

Kaon dispersion relation and flow in relativistic heavy-ion collisions  

E-Print Network [OSTI]

Within the framework of a relativistic transport model (ART) for heavy-ion collisions at AGS energies, we examine the effects of a kaon dispersion relation on the transverse flow of kaons and their transverse momentum and azimuthal angle...

Li, Ba; Ko, Che Ming.

1996-01-01T23:59:59.000Z

37

Work distribution of an expanding gas and transverse energy production in relativistic heavy ion collisions  

E-Print Network [OSTI]

The work distribution of an expanding extreme relativistic gas is shown to be a gamma distribution with a different shape parameter as compared with its non-relativistic counterpart. This implies that the shape of the transverse energy distribution in relativistic heavy ion collisions depends on the particle contents during the evolution of the hot and dense matter. Therefore, transverse energy fluctuations provide additional insights into the Quark-Gluon Plasma produced in these collisions.

Bin Zhang; Jay P. Mayfield

2014-01-19T23:59:59.000Z

38

Work distribution of an expanding gas and transverse energy production in relativistic heavy ion collisions  

E-Print Network [OSTI]

The work distribution of an expanding extreme relativistic gas is shown to be a gamma distribution with a different shape parameter as compared with its non-relativistic counterpart. This implies that the shape of the transverse energy distribution in relativistic heavy ion collisions depends on the particle contents during the evolution of the hot and dense matter. Therefore, transverse energy fluctuations provide additional insights into the Quark-Gluon Plasma produced in these collisions.

Zhang, Bin

2013-01-01T23:59:59.000Z

39

ATLAS ATLAS ATLAS ATLAS  

E-Print Network [OSTI]

for fibres ffl base \\Pi deposit gold traces for wire bonding, VCSEL and PIN placement February 4, 2000 ATLASATLAS ATLAS ATLAS ATLAS Status of Alternative Optical Package R&D K.K. Gan Ohio State University February 4, 2000 ATLAS Pixel Week Outline of Talk ffl Introduction ffl Status ffl Plans February 4, 2000

Gan, K. K.

40

Heavy mesons spectra in a semi-analytical quantum relativistic approach  

SciTech Connect (OSTI)

The obtaining of bound states of heavy and light quarks interacting via a static quark potential is revisited here. We present an approach that both approximate the relativistic wave equation and allows the obtaining of analytical solutions and binding energies (and consequently, the heavy mesons spectra) of the system.

Mota, A. L.; Caldas, H.; Da Fonseca, J. E. [Departamento de Ciencias Naturais, Universidade Federal de Sao Joao del Rei C.P. 110, CEP 36.301-160, Sao Joao del Rei (Brazil)

2013-03-25T23:59:59.000Z

Note: This page contains sample records for the topic "atlas relativistic heavy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Energy loss of relativistic heavy ions in matter B.A. Weaver*, A.J. Westphal  

E-Print Network [OSTI]

Energy loss of relativistic heavy ions in matter B.A. Weaver*, A.J. Westphal Space Sciences.50.Bw Keywords: Energy loss; Stopping power; Heavy ions 1. Introduction The theory of energy loss has.: + 1-510-642-9733; fax: + 1- 510-643-7629. E-mail address: weaver@curium.ssl.berkeley.edu (B.A. Weaver

Leung, Pui-Tak "Peter"

42

Recoil momenta of fragments from relativistic nuclear heavy ions  

Science Journals Connector (OSTI)

It is shown that the recoil momenta of isotopes produced by fragmentation of relativistic C12 and O16 projectiles can be understood from kinematics and a two-fragment approximation.NUCLEAR REACTIONS Recoil momenta of fragments from relativistic C12 and O16 projectiles. Kinematics and two-fragment model. Linear dependence on interfragment binding energy and target independence.

Naohiko Masuda and Fumiyo Uchiyama

1977-04-01T23:59:59.000Z

43

Effect of an equilibrium phase transition on multiphase transport in relativistic heavy ion collisions  

Science Journals Connector (OSTI)

The hadronization scheme for parton transport in relativistic heavy ion collisions is considered in detail. It is pointed out that the traditional scheme for particles being freezed out one by one leads to serious problem on unreasonable long lifetime of partons. A collective phase transition following a supercooling is implemented in a simple way. It turns out that the modified model with a sudden phase transition is able to reproduce the experimental longitudinal distributions of final state particles better than the original one does. The encouraging results indicate that equilibrium phase transition should be taken into proper account in parton transport models for relativistic heavy ion collisions.

Yu Meiling; Du Jiaxin; Liu Lianshou

2006-10-30T23:59:59.000Z

44

Physics of Ultra-Relativistic Nuclear Collisions with Heavy Beams at LHC Energy  

E-Print Network [OSTI]

We discuss current plans for experiments with ultra-relativistic nuclear collisions with heavy beams at LHC energy ($\\sqrt{s} = 5.5$ TeV/nucleon pair). Emphasis will be placed on processes which are unique to the LHC program. They include event-by-event interferometry, complete spectroscopy of the $\\Upsilon$ resonances, and open charm and open beauty measurements.

Peter Braun-Munzinger

1999-08-18T23:59:59.000Z

45

Low Energy Nuclear Structure from Ultra-relativistic Heavy-Light Ion collisions  

E-Print Network [OSTI]

The search for specific signals in ultra-relativistic heavy-light ion collisions addressing intrinsic geometric features of nuclei may open a new window to low energy nuclear structure. We discuss specifically the phenomenon of {\\alpha}-clustering in $^{12}$C when colliding with $^{208}$Pb at almost the speed of light.

Arriola, Enrique Ruiz

2014-01-01T23:59:59.000Z

46

Low Energy Nuclear Structure from Ultra-relativistic Heavy-Light Ion collisions  

E-Print Network [OSTI]

The search for specific signals in ultra-relativistic heavy-light ion collisions addressing intrinsic geometric features of nuclei may open a new window to low energy nuclear structure. We discuss specifically the phenomenon of {\\alpha}-clustering in $^{12}$C when colliding with $^{208}$Pb at almost the speed of light.

Enrique Ruiz Arriola; Wojciech Broniowski

2014-11-21T23:59:59.000Z

47

Possibilities for relativistic heavy ion collisions at Brookhaven  

SciTech Connect (OSTI)

Since 1980 there has been considerable interest at Brookhaven in exploiting the existence of the Colliding Beam Accelerator, CBA, earlier referred to as Isabelle, for the generation of heavy ion collisions at very high energies. The only requirement for a heavy ion collider would have been for an energy booster for the Tandem accelerator and a tunnel and magnet transport system to the AGS. For a few million dollars heavy ions up to nearly 200 GeV/amu could be collided with luminosities of 10/sup 27/ to 10/sup 28//cm/sup 2/ sec in experimental halls with ideal facilities for heavy ion physics studies. Although the CBA project has been stopped, it is still true that Brookhaven has in place enormous advantages for constructing a heavy ion collider. This paper describes a design that exploits those advantages. It uses the tunnel and other civil construction, the refrigerator, vacuum equipment, injection line components, and the magnet design for which there is expertise and a production facility in place. The result is a machine that appears quite different than would a machine designed from first principles without access to these resources but one which is of high performance and of very attractive cost.

Barton, M.O.; Hahn, H.

1983-01-01T23:59:59.000Z

48

Perturbative and nonperturbative EM lepton pair production in relativistic heavy-ion collisions  

SciTech Connect (OSTI)

In this talk, the authors focus on electromagnetic dilepton production from the QED-vacuum in relativistic heavy-ion collisions. Heavy ions in relativistic motion generate strong time-dependent EM fields with large Fourier components which give rise to sizable pair production. There are several motivations for this study: Lepton pair production by hadronic (Drell-Yan) processes has been widely discussed as a possible signature of the quark-gluon plasma formation. The dominant background will come from electromagnetic sources and could even mask the signals from the plasma phase. Electromagnetically produced lepton pairs also impose severe constraints on the design of relativistic heavy-ion colliders such as RHIC and LHC. In addition to the free pair production discussed above, pair-production with capture of the negatively charged lepton into a bound state is also possible. This change of the charge state of the ions is the leading mechanism for beam loss of relativistic colliders. Accurate predictions of the cross section for this process are important because the cross section increases with energy.

Oberacker, V.E.; Wells, J.C.; Umar, A.S. [Oak Ridge National Lab., TN (United States)]|[Vanderbilt Univ., Nashville, TN (United States). Dept. of Physics and Astronomy; Strayer, M.R. [Oak Ridge National Lab., TN (United States)

1993-12-31T23:59:59.000Z

49

Resonance Absorption and Regeneration in Relativistic Heavy Ion Collisions  

E-Print Network [OSTI]

The regeneration of hadronic resonances is discussed for heavy ion collisions at SPS and SIS-300 energies. The time evolutions of Delta, rho and phi resonances are investigated. Special emphasize is put on resonance regeneration after chemical freeze-out. The emission time spectra of experimentally detectable resonances are explored.

Sascha Vogel; Marcus Bleicher

2005-05-10T23:59:59.000Z

50

Diffusion or bounce back in relativistic heavy-ion collisions?  

E-Print Network [OSTI]

The time evolution of pseudorapidity distributions of produced charged hadrons in d+Au collisions at sqrt(s_NN) = 200 GeV is investigated. Results of a nonequilibrium-statistical Relativistic Diffusion Model with three sources are compared with a macroscopic "bounce back" model that does not allow for statistical equilibration at large times, but instead leads to motion reversal. When compared to the data, the results of the diffusion approach are more precise, thus emphasizing that the system is observed to be on its way to thermal equilibrium.

Georg Wolschin; Minoru Biyajima; Takuya Mizoguchi

2008-03-12T23:59:59.000Z

51

Relativistic effects in the production of pseudoscalar and vector doubly heavy mesons from e+e- annihilation  

Science Journals Connector (OSTI)

On the basis of the perturbative QCD and the relativistic quark model we investigate the relativistic and bound state effects in the production processes of a pair of S-wave doubly heavy mesons consisting of b and c quarks. Relativistic factors in the production amplitude connected with the relative motion of heavy quarks and the transformation law of the bound state wave function to the reference frame of the moving pseudoscalar P- and vector V-mesons are taken into account. Relativistic corrections of the second order in the heavy quark relative momentum and bound state corrections proportional to the quark binding energies in the doubly heavy mesons are calculated in the production rates. We obtain an increase of the cross section for the reaction e++e-?J/?+?c due to the considered effects by a factor 22.5 in the range of the center-of-mass energy s=612??GeV.

D. Ebert and A. P. Martynenko

2006-09-07T23:59:59.000Z

52

Effect of equilibrium phase transition on multiphase transport in relativistic heavy ion collisions  

E-Print Network [OSTI]

The hadronization scheme for parton transport in relativistic heavy ion collisions is considered in detail. It is pointed out that the traditional scheme for particles being freezed out one by one leads to serious problem on unreasonable long lifetime for partons. A super-cooling of the parton system followed by a collective phase transition is implemented in a simple way. It turns out that the modified model with a global phase transition is able to reproduce the experimental longitudinal distributions of final state particles better than the original one does. The encouraging results indicate that a relevant parton transport model for relativistic heavy ion collision should take equilibrium phase transition into proper account.

Yu Meiling; Du Jiaxin; Liu Lianshou

2006-06-24T23:59:59.000Z

53

Kaon and Lambda productions in relativistic heavy ion collisions  

Science Journals Connector (OSTI)

A microscopic approach has been employed to study the kaon and ? productions in heavy ion collisions. The productions of K + and ? have been studied within the framework of Boltzmann transport equation for various beam energies. We find a non-monotonic horn like structure for K + / p i + and ? / ? when plotted against centre of mass energies ( s N N ) with the assumption of initial partonic phase for s N N shows a monotonic nature when a hadronic initial state is considered for all s N N . Experimental values of K ? / ? ? for different s N N are also reproduced within the ambit of the same formalism.

Jajati K. Nayak; Sarmistha Banik; Jan-e Alam

2011-01-01T23:59:59.000Z

54

Does the nuclear heavy-ion cross section stay constant at ultra-relativistic energies?  

Science Journals Connector (OSTI)

We suggest that the nuclear contribution to the reaction cross section may increase with incident energy for heavy-ion collisions in the ultra-relativistic domain. We argue, using quasi-geometrical models, that this increase in the reaction cross section is directly related to the diffuseness of the nuclear surface. The available experimental data are at least not inconsistent with the existence of this effect.

T. Kodama; C.E. Aguiar; A.N.F. Aleixo; M.F. Barroso; R. Donangelo; S.J.B. Duarte; J.L. Neto

1991-01-01T23:59:59.000Z

55

An overview of relativistic hydrodynamics as applied to heavy ion reactions  

SciTech Connect (OSTI)

The application of relativistic hydrodynamics as applied to heavy ions is reviewed. Constraints on the nuclear equation of state, as well as the form of the hydrodynamic equations imposed by causality are discussed. Successes (flow, side-splash, scaling) and shortcomings of one-fluid hydrodynamics are reviewed. Models for pion production within hydrodynamics and reasons for disagreement with experiment are assessed. Finally, the motivations for and the implementations of multi-fluid models are presented. 74 refs., 11 figs.

Strottman, D.D.

1989-01-01T23:59:59.000Z

56

Rho0 Photoproduction in Ultra-Peripheral Relativistic Heavy Ion Collisions with STAR  

SciTech Connect (OSTI)

Photoproduction reactions occur when the electromagnetic field of a relativistic heavy ion interacts with another heavy ion. The STAR collaboration presents a measurement of {rho}{sup 0} and direct {pi}{sup +}{pi}{sup -} photoproduction in ultra-peripheral relativistic heavy ion collisions at {radical}s{sub NN} = 200 GeV. We observe both exclusive photoproduction and photoproduction accompanied by mutual Coulomb excitation. We find a coherent cross-section of {sigma}(AuAu {yields} Au*Au* {rho}{sup 0}) = 530 {+-} 19 (stat.) {+-} 57 (syst.) mb, in accord with theoretical calculations based on a Glauber approach, but considerably below the predictions of a color dipole model. The {rho}{sup 0} transverse momentum spectrum (p{sub T}{sup 2}) is fit by a double exponential curve including both coherent and incoherent coupling to the target nucleus; we find {sigma}{sub inc}/{sigma}{sub coh} = 0.29 {+-} 0.03 (stat.) {+-} 0.08 (syst.). The ratio of direct {pi}{sup +}{pi}{sup -} production is comparable to that observed in {gamma}p collisions at HERA, and appears to be independent of photon energy. Finally, the measured {rho}{sup 0} spin helicity matrix elements agree within errors with the expected s-channel helicity conservation.

STAR Coll

2007-12-20T23:59:59.000Z

57

Nonperturbative electromagnetic muon-pair production with capture in peripheral relativistic heavy-ion collisions  

SciTech Connect (OSTI)

We discuss preliminary calculations of impact-parameter-dependent probabilities and cross sections for muon-pair production with capture of the negative muon into the K-shell of the target caused by the time-dependent electromagnetic fields generated in peripheral relativistic heavy-ion collisions. Our approach is nonperturbative in that we calculate probabilities by solving the time-dependent Dirac equation on a three-dimensional Cartesian lattice using the basis-spline collocation method. Use of the axial gauge for the electromagnetic potentials produces an interaction easier to implement on the lattice than the Lorentz gauge. 19 refs., 5 figs.

Wells, J.C. (Oak Ridge National Lab., TN (United States) Vanderbilt Univ., Nashville, TN (United States). Dept. of Physics and Astronomy); Oberacker, V.E.; Umar, A.S. (Vanderbilt Univ., Nashville, TN (United States). Dept. of Physics and Astronomy); Bottcher, C.; Strayer, M.R.; Wu, J.S. (Oak Ridge National Lab., TN (United States))

1991-01-01T23:59:59.000Z

58

Ultraviolet energy dependence of particle production sources in relativistic heavy-ion collisions  

E-Print Network [OSTI]

The energy dependence of particle production sources in relativistic heavy-ion collisions is investigated from RHIC to LHC energies. Whereas charged-hadron production in the fragmentation sources follows a ln(s_NN/s_0) law, particle production in the mid-rapidity gluon-gluon source exhibits a much stronger dependence proportional to ln^3(s_NN/s_0), and becomes dominant between RHIC and LHC energies. The production of particles with pseudorapidities beyond the beam rapidity is also discussed.

Wolschin, Georg

2015-01-01T23:59:59.000Z

59

Relativistic Vlasov-Uehling-Uhlenbeck Model for Heavy-Ion Collisions  

E-Print Network [OSTI]

that in the free space. The medium effect on the nucleon-nucleon cross section besides that of the Pauli principle is currently controver- sial. Using the relativistic Brueckner theory, ter Haar and Malfliet have obtained an effective cross section which.... 55, 2786 (1985). 6G. F. Bertsch, H. Kruse, and S. Das Gupta, Phys. Rev. C 29, 673 (1984). 78. ter Haar and R. Malfliet, Phys. Rep. 149, 207 (1987). G. E. Brown, in Proceedings of the Eighth High Energy Heavy ion Study, Berkeley, California, 1987...

Ko, Che Ming; LI, Q.

1988-01-01T23:59:59.000Z

60

Has the QCD Critical Point Been Signaled by Observations at the BNL Relativistic Heavy Ion Collider?  

SciTech Connect (OSTI)

The shear viscosity to entropy ratio ({eta}/s) is estimated for the hot and dense QCD matter created in Au+Au collisions at BNL Relativistic Heavy Ion Collider ({radical}(s{sub NN})=200 GeV). A very low value is found; {eta}/s{approx}0.1, which is close to the conjectured lower bound (1/4{pi}). It is argued that such a low value is indicative of thermodynamic trajectories for the decaying matter which lie close to the QCD critical end point.

Lacey, Roy A.; Ajitanand, N. N.; Alexander, J. M.; Chung, P.; Holzmann, W. G.; Issah, M.; Taranenko, A. [Department of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794-3400 (United States); Danielewicz, P. [National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824-1321 (United States); Stoecker, Horst [Institut fuer Theoretische Physik, Johann Wolfgang Goethe-Universitaet D60438 Frankfurt (Germany)

2007-03-02T23:59:59.000Z

Note: This page contains sample records for the topic "atlas relativistic heavy" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
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to obtain the most current and comprehensive results.


61

Electron cloud observations and cures in the Relativistic Heavy Ion Collider  

Science Journals Connector (OSTI)

Since 2001, the Relativistic Heavy Ion Collider has experienced electron cloud effects, some of which have limited the beam intensity. These include dynamic pressure rises (including pressure instabilities), tune shifts, a reduction of the instability threshold for bunches crossing the transition energy, and possibly incoherent emittance growth. We summarize the main observations in operation and dedicated experiments as well as countermeasures including baking, nonevaporable getter coated warm beam pipes, solenoids, bunch patterns, antigrazing rings, prepumped cold beam pipes, scrubbing, and operation with long bunches.

W. Fischer, M. Blaskiewicz, J. M. Brennan, H. Huang, H.-C. Hseuh, V. Ptitsyn, T. Roser, P. Thieberger, D. Trbojevic, J. Wei, S. Y. Zhang, and U. Iriso

2008-04-18T23:59:59.000Z

62

Phase Transitions in Solids Stimulated by Simultaneous Exposure to High Pressure and Relativistic Heavy Ions  

Science Journals Connector (OSTI)

In many solids, heavy ions of high kinetic energy (MeV-GeV) produce long cylindrical damage trails with diameters of order 10nm. Up to now, no information was available how solids cope with the simultaneous exposure to these energetic projectiles and to high pressure. We report the first experiments where relativistic uranium and gold ions from the SIS heavy-ion synchrotron at GSI were injected through several mm of diamond into solid samples pressurized up to 14GPa in a diamond anvil cell. In synthetic graphite and natural zircon, the combination of pressure and ion beams triggered drastic structural changes not caused by the applied pressure or the ions alone. The modifications comprise long-range amorphization of graphite rather than individual track formation, and in the case of zircon the decomposition into nanocrystals and nucleation of the high-pressure phase reidite.

Ulrich A. Glasmacher; Maik Lang; Hans Keppler; Falko Langenhorst; Reinhard Neumann; Dieter Schardt; Christina Trautmann; Gnther A. Wagner

2006-05-17T23:59:59.000Z

63

Interference of thermal photons from quark and hadronic phases in relativistic collisions of heavy nuclei  

SciTech Connect (OSTI)

We explore intensity correlations for thermal photons having K{sub T}{<=}2 GeV/c for central collisions of heavy nuclei at Relativistic Heavy Ion Collider and Large Hadron Collider energies. These photons get competing contributions from the quark and hadronic phases. This competition gives rise to a unique structure, especially in the outward correlation function, owing to the interference between the photons from the two sources. The temporal separation of the two sources provides the lifetime of the system and their strengths provide the relative contribution of the two phases. The results are found to be quite sensitive to the quark-hadron phase transition temperature and the formation time of the plasma.

Srivastava, Dinesh Kumar; Chatterjee, Rupa [Variable Energy Cyclotron Centre, 1/AF Bidhan Nagar, Kolkata 700 064 (India)

2009-11-15T23:59:59.000Z

64

Dynamical heavy-quark recombination and the nonphotonic single-electron puzzle at energies available at the BNL Relativistic Heavy Ion Collider (RHIC)  

SciTech Connect (OSTI)

We show that the single, nonphotonic electron nuclear modification factor R{sub AA}{sup e} is affected by the thermal enhancement of the heavy-baryon-to-heavy-meson ratio in relativistic heavy-ion collisions with respect to proton-proton collisions. We make use of the dynamical quark recombination model to compute such a ratio and show that this produces a sizable suppression factor for R{sub AA}{sup e} at intermediate transverse momenta. We argue that this suppression factor needs to be considered, in addition to the energy loss contribution, in calculations of R{sub AA}{sup e}.

Ayala, Alejandro [Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Apartado Postal 70-543, Mexico Distrito Federal 04510 (Mexico); Centro Brasileiro de Pesquisas Fisicas, CBPF, Rua Dr. Xavier Sigaud 150, 22290-180 Rio de Janeiro (Brazil); Magnin, J. [Centro Brasileiro de Pesquisas Fisicas, CBPF, Rua Dr. Xavier Sigaud 150, 22290-180 Rio de Janeiro (Brazil); Montano, Luis Manuel [Centro de Investigacion y de Estudios Avanzados del IPN, Apartado Postal 14-740, Mexico Distrito Federal 07000 (Mexico); Sanchez, G. Toledo [Instituto de Fisica, Universidad Nacional Autonoma de Mexico, Apartado Postal 20-364, Mexico Distrito Federal 01000 (Mexico)

2009-12-15T23:59:59.000Z

65

Electroweak probes in heavy-ion collisions at the LHC with ATLAS  

E-Print Network [OSTI]

Measurements of vector boson production in lead-lead collisions provide essential control data for studies of jets and jet quenching in the quark gluon plasma. Because the electroweak bosons do not interact strongly in the plasma, measurements of their production rates can be predicted using standard high-energy event generators. In addition, the vector boson spectra are potentially sensitive to nuclear parton distribution functions. The ATLAS detector has proven to be an excellent apparatus in measurements involving photons, electrons and muons in the high occupancy environment produced in heavy-ion collisions. The experiment has recorded 158 $\\mu$b$^{-1}$ of lead-lead and 29.85 $nb^{-1}$ of proton-lead data, both of which have similar integrated partonic luminosities. In this letter, measurements of $\\gamma$, $Z$ and $W^{\\pm}$ production in lead-lead and proton-lead collisions are shown and compared to predicted rates from JETPHOX (for $\\gamma$) and PYTHIA/POWHEG (for $Z$ and $W^{\\pm}$).

Donadelli, Marisilvia; The ATLAS collaboration

2014-01-01T23:59:59.000Z

66

Quark-gluon plasma in the early Universe and in ultra-relativistic heavy-ion collisions  

SciTech Connect (OSTI)

We briefly give an elementary introduction to the expansion of the Early Universe till when the phase transition of the quark-gluon plasma to a hadronic matter takes place. Then we describe some main element of the study of QGP by mean of ultra-relativistic heavy-ion collisions (uRHIC's)

Greco, V. [Department of Physics and Astronomy, University of Catania, Catania, Italy and INFN - Laboratori Nazionali del Sud, Catania (Italy)

2014-05-09T23:59:59.000Z

67

Single Photons from Relativistic Heavy Ion Collisions and Quark-Hadron Phase Transition  

E-Print Network [OSTI]

The present status of theoretical expectations of studies of single photons from relativistic heavy ion collisions is discussed. It is argued that the upper limit of single photon radiation from S+Au collisions at CERN SPS obtained by the WA80 collaboration perhaps rules out any reasonable description of the collision process which does not involve a phase transition to quark gluon plasma. Predictions for single photons from the quark-matter likely to be created in collision of two lead nuclei at RHIC and LHC energies are given with a proper accounting of chemical equilibration and transverse expansion. Finally, it is pointed out that, contrary to the popular belief of a quadrilateral dependence of electromagnetic radiations ($N_\\gamma$) from such collisions on the number of charged particles ($N_{ch})$, we may only have $N_\\gamma \\propto N_{ch}^{1.2}$.

Dinesh Kumar Srivastava

1997-05-29T23:59:59.000Z

68

Recombinant Science: The Birth of the Relativistic Heavy Ion Collider (431st Brookhaven Lecture)  

SciTech Connect (OSTI)

As part of the celebration of Brookhaven Lab's 60th anniversary, Robert P. Crease, the Chair of the Philosophy Department at Stony Brook University and BNL's historian, will present the second of two talks on the Lab's history. In "Recombinant Science: The Birth of the Relativistic Heavy Ion Collider," Dr. Crease will focus on the creation of the world's most powerful colliding accelerator for nuclear physics. Known as RHIC, the collider, as Dr. Crease will recount, was formally proposed in 1984, received initial construction funding from the U.S. Department of Energy in 1991, and started operating in 2000. In 2005, the discovery at RHIC of the world's most perfect liquid, a state of matter that last existed just moments after the Big Bang, was announced, and, since then, this perfect liquid of quarks and gluons has been the subject of intense study.

Crease, Robert P. (Ph.D, Department of Philosophy, Stony Brook University) [Ph.D, Department of Philosophy, Stony Brook University

2007-12-12T23:59:59.000Z

69

J/psi production from charm coalescence in relativistic heavy ion collisions  

E-Print Network [OSTI]

J/psi production and collective flow is studied with a coalescence model based on phase space distribution of charm quarks from a multi-phase transport model simulation of relativistic heavy ion collisions. Both the yield and the flow of J/psi particles are sensitive to charm quark final state interactions. As the charm quark rescattering cross section increases from 3 mb to 10 mb, J/psi elliptic flow increases faster than corresponding light hadron elliptic flows. The v_2(p_t) of J/psi crosses that of D mesons to reach a value that is about the peak value of the D meson flow but at a higher p_t. As J/psi elliptic flow has only contributions from charm quarks, it complements D meson elliptic flow in reflecting charm properties in the Quark-Gluon Plasma.

Bin Zhang

2006-06-21T23:59:59.000Z

70

Initialization of hydrodynamics in relativistic heavy ion collisions with an energy-momentum transport model  

E-Print Network [OSTI]

A key ingredient of hydrodynamical modeling of relativistic heavy ion collisions is thermal initial conditions, an input that is the consequence of a pre-thermal dynamics which is not completely understood yet. In the paper we employ a recently developed energy-momentum transport model of the pre-thermal stage to study influence of the alternative initial states in nucleus-nucleus collisions on flow and energy density distributions of the matter at the starting time of hydrodynamics. In particular, the dependence of the results on isotropic and anisotropic initial states is analyzed. It is found that at the thermalization time the transverse flow is larger and the maximal energy density is higher for the longitudinally squeezed initial momentum distributions. The results are also sensitive to the relaxation time parameter, equation of state at the thermalization time, and transverse profile of initial energy density distribution: Gaussian approximation, Glauber Monte Carlo profiles, etc. Also, test results ensure that the numerical code based on the energy-momentum transport model is capable of providing both averaged and fluctuating initial conditions for the hydrodynamic simulations of relativistic nuclear collisions.

V. Yu. Naboka; S. V. Akkelin; Iu. A. Karpenko; Yu. M. Sinyukov

2015-01-14T23:59:59.000Z

71

Alternative Scenarios of Relativistic Heavy-Ion Collisions: III. Transverse Momentum Spectra  

E-Print Network [OSTI]

Transverse-mass spectra, their inverse slopes and mean transverse masses in relativistic collisions of heavy nuclei are analyzed in a wide range of incident energies 2.7 GeV $\\le \\sqrt{s_{NN}}\\le$ 39 GeV. The analysis is performed within the three-fluid model employing three different equations of state (EoS's): a purely hadronic EoS, an EoS with the first-order phase transition and that with a smooth crossover transition into deconfined state. Calculations show that inverse slopes and mean transverse masses of all the species (with the exception of antibaryons within the hadronic scenario) exhibit a step-like behavior similar to that observed for mesons and protons in available experimental data. This step-like behavior takes place for all considered EoS's and results from the freeze-out dynamics rather than is a signal of the deconfinement transition. A good reproduction of experimental inverse slopes and mean transverse masses for light species (up to proton) is achieved within all the considered scenarios...

Ivanov, Yu B

2014-01-01T23:59:59.000Z

72

Heavy sterile neutrinos, entropy and relativistic energy production, and the relic neutrino background  

E-Print Network [OSTI]

We explore the implications of the existence of heavy neutral fermions (i.e., sterile neutrinos) for the thermal history of the early universe. In particular, we consider sterile neutrinos with rest masses in the 100 MeV to 500 MeV range, with couplings to ordinary active neutrinos large enough to guarantee thermal and chemical equilibrium at epochs in the early universe with temperatures T > 1 GeV, but in a range to give decay lifetimes from seconds to minutes. Such neutrinos would decouple early, with relic densities comparable to those of photons, but decay out of equilibrium, with consequent prodigious entropy generation prior to, or during, Big Bang Nucleosynthesis (BBN). Most of the ranges of sterile neutrino rest mass and lifetime considered are at odds with Cosmic Microwave Background (CMB) limits on the relativistic particle contribution to energy density (e.g., as parameterized by N_eff). However, some sterile neutrino parameters can lead to an acceptable N_eff. These parameter ranges are accompanie...

Fuller, George M; Kusenko, Alexander

2011-01-01T23:59:59.000Z

73

Intensity interferometry of thermal photons from relativistic heavy-ion collisions  

SciTech Connect (OSTI)

Intensity interferometry of thermal photons having transverse momenta k{sub T}{approx_equal}0.1-2.0 GeV produced in relativistic collision of heavy nuclei is studied. It is seen to provide an accurate information about the temporal and spatial structure of the interacting system. The source dimensions, and their k{sub T} dependence revealed by the photon interferometry, display a richness not seen in pion interferometry. We attribute this to the difference in the source functions, the fact that photons come out from every stage of the collision and from every point in the system, and the fact that the rate of production of photons is different for the quark-gluon plasma, which dominates the early hot stage and the hadronic matter that populates the last phase of the collision dynamics. The usefulness of this procedure is demonstrated by an application to collision of lead nuclei at the CERN SPS. Prediction for the transverse momentum dependence of the sizes for SPS, RHIC, and LHC energies are given.

Srivastava, Dinesh Kumar [Variable Energy Cyclotron Centre, 1/AF Bidhan Nagar, Kolkata 700 064 (India)

2005-03-01T23:59:59.000Z

74

PREVENTING POLLUTION USING ISO 14001 AT A PARTICLE ACCELERATOR THE RELATIVISTIC HEAVY ION COLLIDER PROJECT.  

SciTech Connect (OSTI)

In early 1997 Brookhaven National Laboratory (BNL) discovered that the spent fuel pool of their High Flux Beam Reactor was leaking tritium into the groundwater. Community members, activist groups, politicians and regulators were outraged with the poor environmental management practices at BNL. The reactor was shut down and the Department of Energy (DOE) terminated the contract with the existing Management Company. At this same time, a major new scientific facility, the Relativistic Heavy Ion Collider (RHIC), was nearing the end of construction and readying for commissioning. Although environmental considerations had been incorporated into the design of the facility; some interested parties were skeptical that this new facility would not cause significant environmental impacts. RHIC management recognized that the future of its operation was dependent on preventing pollution and allaying concerns of its stakeholders. Although never done at a DOE National Laboratory before Brookhaven Science Associates, the new management firm, committed to implementing an Environmental Management System (EMS) and RHIC managers volunteered to deploy it within their facility on an extremely aggressive schedule. Several of these IS0 requirements contribute directly to preventing pollution, an area where particular emphasis was placed. This paper describes how Brookhaven used the following key IS0 14001 elements to institutionalize Pollution Prevention concepts: Environmental Policy, Aspects, Objectives and Targets, Environmental Management Program, Structure and Responsibility, Operational Controls, Training, and Management Review. In addition, examples of implementation at the RHIC Project illustrate how BNL's premiere facility was able to demonstrate to interested parties that care had been taken to implement technological and administrative controls to minimize environmental impacts, while at the same time reduce the applicability of regulatory requirements to their operations.

BRIGGS,S.L.K.; MUSOLINO,S.V.

2001-06-01T23:59:59.000Z

75

Heavy sterile neutrinos, entropy and relativistic energy production, and the relic neutrino background  

E-Print Network [OSTI]

We explore the implications of the existence of heavy neutral fermions (i.e., sterile neutrinos) for the thermal history of the early universe. In particular, we consider sterile neutrinos with rest masses in the 100 MeV to 500 MeV range, with couplings to ordinary active neutrinos large enough to guarantee thermal and chemical equilibrium at epochs in the early universe with temperatures T > 1 GeV, but in a range to give decay lifetimes from seconds to minutes. Such neutrinos would decouple early, with relic densities comparable to those of photons, but decay out of equilibrium, with consequent prodigious entropy generation prior to, or during, Big Bang Nucleosynthesis (BBN). Most of the ranges of sterile neutrino rest mass and lifetime considered are at odds with Cosmic Microwave Background (CMB) limits on the relativistic particle contribution to energy density (e.g., as parameterized by N_eff). However, some sterile neutrino parameters can lead to an acceptable N_eff. These parameter ranges are accompanied by considerable dilution of the ordinary background relic neutrinos, possibly an adverse effect on BBN, but sometimes fall in a range which can explain measured neutrino masses in some particle physics models. A robust signature of these sterile neutrinos would be a measured N_eff not equal to 3 coupled with no cosmological signal for neutrino rest mass when the detection thresholds for these probes are below laboratory-established neutrino mass values, either as established by the atmospheric neutrino oscillation scale or direct measurements with, e.g., KATRIN or neutrino-less double beta decay experiments.

George M. Fuller; Chad T. Kishimoto; Alexander Kusenko

2011-10-28T23:59:59.000Z

76

Semileptonic and nonleptonic decays of Bc mesons to orbitally excited heavy mesons in the relativistic quark model  

Science Journals Connector (OSTI)

The form factors of weak decays of the Bc meson to orbitally excited charmonium, D, Bs, and B mesons are calculated in the framework of the QCD-motivated relativistic quark model based on the quasipotential approach. Relativistic effects are systematically taken into account. The form factor dependence on the momentum transfer is reliably determined in the whole kinematical range. The form factors are expressed through the overlap integrals of the meson wave functions, which are known from the previous mass spectra calculations within the same model. On this basis, semileptonic and nonleptonic Bc decay rates to orbitally excited heavy mesons are calculated. Predictions for the Bc decays to the orbitally and radially excited 2P and 3S charmonium states are given, which could be used for clarifying the nature of the recently observed charmoniumlike states above the open charm production threshold.

D. Ebert, R. N. Faustov, and V. O. Galkin

2010-08-16T23:59:59.000Z

77

Pion Transverse Momentum Spectrum, Elliptic Flow and Interferometry in the Granular Source Model in Ultra-Relativistic Heavy Ion Collisions  

E-Print Network [OSTI]

We systematically investigate the pion transverse momentum spectrum, elliptic flow, and Hanbury-Brown-Twiss (HBT) interferometry in the granular source model of quark-gluon plasma droplets in ultra-relativistic heavy ion collisions. The granular source model can well reproduce the experimental results of the Au-Au collisions at $\\sqrt{s_{NN}}=$ 200 GeV and the Pb-Pb collisions at $\\sqrt{s_{NN}} =$ 2.76 TeV with different centralities. We examine the parameters of the granular source models with an uniform and Woods-Saxon initial energy distributions in a droplet. The parameters exhibit certain regularities for collision centrality and energy.

Yang, Jing; Zhang, Wei-Ning

2015-01-01T23:59:59.000Z

78

Measurements of phi meson production in relativistic heavy-ion collisions at RHIC  

SciTech Connect (OSTI)

We present results for the measurement of {phi} meson production via its charged kaon decay channel {phi} {yields} K{sup +}K{sup -} in Au + Au collisions at {radical}s{sub NN} = 62.4, 130, and 200 GeV, and in p + p and d + Au collisions at {radical}s{sub NN} = 200 GeV from the STAR experiment at the BNL Relativistic Heavy Ion Collider (RHIC). The midrapidity (|y| < 0.5) {phi} meson transverse momentum (p{sub T}) spectra in central Au + Au collisions are found to be well described by a single exponential distribution. On the other hand, the p{sub T} spectra from p + p, d + Au and peripheral Au + Au collisions show power-law tails at intermediate and high p{sub T} and are described better by Levy distributions. The constant {phi}/K{sup -} yield ratio vs beam species, collision centrality and colliding energy is in contradiction with expectations from models having kaon coalescence as the dominant mechanism for {phi} production at RHIC. The {Omega}/{phi} yield ratio as a function of p{sub T} is consistent with a model based on the recombination of thermal s quarks up to p{sub T} {approx} 4 GeV/c, but disagrees at higher transverse momenta. The measured nuclear modification factor, R{sub dAu}, for the {phi} meson increases above unity at intermediate p{sub T}, similar to that for pions and protons, while R{sub AA} is suppressed due to the energy loss effect in central Au + Au collisions. Number of constituent quark scaling of both R{sub cp} and v{sub 2} for the {phi} meson with respect to other hadrons in Au + Au collisions at {radical}s{sub NN} = 200 GeV at intermediate p{sub T} is observed. These observations support quark coalescence as being the dominant mechanism of hadronization in the intermediate p{sub T} region at RHIC.

STAR Coll

2009-06-16T23:59:59.000Z

79

Hadronic resonance production in d+Au collisions at root S(NN) = 200 GeV measured at the BNL Relativistic Heavy Ion Collider  

E-Print Network [OSTI]

tracker at the BNL Relativistic Heavy Ion Collider). The masses and widths of these resonances are studied as a function of transverse momentum p(T). We observe that the resonance spectra follow a generalized scaling law with the transverse mass m...

Abelev, B. I.; Aggarwal, M. M.; Ahammed, Z.; Anderson, B. D.; Arkhipkin, D.; Averichev, G. S.; Bai, Y.; Balewski, J.; Barannikova, O.; Barnby, L. S.; Baudot, J.; Baumgart, S.; Beavis, D. R.; Bellwied, R.; Benedosso, F.; Betts, R. R.; Bhardwaj, S.; Bhasin, A.; Bhati, A. K.; Bichsel, H.; Bielcik, J.; Bielcikova, J.; Biritz, B.; Bland, L. C.; Bombara, M.; Bonner, B. E.; Botje, M.; Bouchet, J.; Braidot, E.; Brandin, A. V.; Bruna; Bueltmann, S.; Burton, T. P.; Bystersky, M.; Cai, X. Z.; Caines, H.; Sanchez, M. Calderon de la Barca; Callner, J.; Catu, O.; Cebra, D.; Cendejas, R.; Cervantes, M. C.; Chajecki, Z.; Chaloupka, P.; Chattopdhyay, S.; Chen, H. F.; Chen, J. H.; Chen, J. Y.; Cheng, J.; Cherney, M.; Chikanian, A.; Choi, K. E.; Christie, W.; Chung, S. U.; Clarke, R. F.; Codrington, M. J. M.; Coffin, J. P.; Cormier, T. M.; Cosentino, M. R.; Cramer, J. G.; Crawford, H. J.; Das, D.; Dash, S.; Daugherity, M.; De Silva, C.; Dedovich, T. G.; DePhillips, M.; Derevschikov, A. A.; de Souza, R. Derradi; Didenko, L.; Djawotho, P.; Dogra, S. M.; Dong, X.; Drachenberg, J. L.; Draper, J. E.; Du, F.; Dunlop, J. C.; Mazumdar, M. R. Dutta; Edwards, W. R.; Efimov, L. G.; Elhalhuli, E.; Elnimr, M.; Emelianov, V.; Engelage, J.; Eppley, G.; Erazmus, B.; Estienne, M.; Eun, L.; Fachini, P.; Fatemi, R.; Fedorisin, J.; Feng, A.; Filip, P.; Finch, E.; Fine, V.; Fisyak, Y.; Gagliardi, Carl A.; Gaillard, L.; Gangaharan, D. R.; Ganti, M. S.; Garcia-Solis, E.; Ghazikhanian, V.; Ghosh, P.; Gorbunov, Y. N.; Gordon, A.; Grebenyuk, O.; Grosnick, D.; Grube, B.; Guertin, S. M.; Guimaraes, K. S. F. F.; Gupta, A.; Gupta, N.; Guryn, W.; Haag, B.; Hallman, T. J.; Hamed, A.; Harris, J. W.; He, W.; Heinz, M.; Hepplemann, S.; Hippolyte, B.; Hirsch, A.; Hoffman, A. M.; Hoffmann, G. W.; Hofman, D. J.; Hollis, R. S.; Huang, H. Z.; Humanic, T. J.; Igo, G.; Iordanova, A.; Jacobs, P.; Jacobs, W. W.; Jakl, P.; Jin, F.; Jones, P. G.; Joseph, J.; Judd, E. G.; Kabana, S.; Kajimoto, K.; Kang, K.; Kapitan, J.; Kaplan, M.; Keane, D.; Kechechyan, A.; Kettler, D.; Khodyrev, V. Yu; Kiryluk, J.; Kisiel, A.; Klein, S. R.; Knospe, A. G.; Kocoloski, A.; Koetke, D. D.; Kopytine, M.; Kotchenda, L.; Kouchpil, V.; Kravtsov, P.; Kravtsov, V. I.; Krueger, K.; Krus, M.; Kuhn, C.; Kumar, L.; Kurnadi, P.; Lamont, M. A. C.; Landgraf, J. M.; LaPointe, S.; Lauret, J.; Lebedev, A.; Lednicky, R.; Lee, C. -H; LeVine, M. J.; Li, C.; Li, Y.; Lin, G.; Lin, X.; Lindenbaum, S. J.; Lisa, M. A.; Liu, F.; Liu, H.; Liu, J.; Liu, L.; Ljubicic, T.; Llope, W. J.; Longacre, R. S.; Love, W. A.; Lu, Y.; Ludlam, T.; Lynn, D.; Ma, G. L.; Ma, Y. G.; Mahapatra, D. P.; Majka, R.; Mall, M. I.; Mangotra, L. K.; Manweiler, R.; Margetis, S.; Markert, C.; Matis, H. S.; Matulenko, Yu A.; McShane, T. S.; Meschanin, A.; Millane, J.; Miller, M. L.; Minaev, N. G.; Mioduszewski, Saskia; Mischke, A.; Mishra, D. K.; Mitchell, J.; Mohanty, B.; Morozov, D. A.; Munhoz, M. G.; Nandi, B. K.; Nattrass, C.; Nayak, T. K.; Nelson, J. M.; Nepali, C.; Netrakanti, P. K.; Ng, M. J.; Nogach, L. V.; Nurushev, S. B.; Odyniec, G.; Ogawa, A.; Okada, H.; Okorokov, V.; Olson, D.; Pachr, M.; Page, B. S.; Pal, S. K.; Pandit, Y.; Panebratsev, Y.; Pawlak, T.; Peitzmann, T.; Perevoztchikov, V.; Perkins, C.; Peryt, W.; Phatak, S. C.; Planinic, M.; Pluta, J.; Poljak, N.; Poskanzer, A. M.; Potukuchi, B. V. K. S.; Prindle, D.; Pruneau, C.; Pruthi, N. K.; Putschke, J.; Raniwala, R.; Raniwala, S.; Ray, R. L.; Reed, R.; Ridiger, A.; Ritter, H. G.; Roberts, J. B.; Rogachevskiy, O. V.; Romero, J. L.; Rose, A.; Roy, C.; Ruan, L.; Russcher, M. J.; Rykov, V.; Sahoo, R.; Sakrejda, I.; Sakuma, T.; Salur, S.; Sandweiss, J.; Sarsour, M.; Schambach, J.; Scharenberg, R. P.; Schmitz, N.; Seger, J.; Selyuzhenkov, I.; Seyboth, P.; Shabetai, A.; Shahaliev, E.; Shao, M.; Sharma, M.; Shi, S. S.; Shi, X-H; Sichtermann, E. P.; Simon, F.; Singaraju, R. N.; Skoby, M. J.; Smirnov, N.; Snellings, R.; Sorensen, P.; Sowinski, J.; Spinka, H. M.; Srivastava, B.; Stadnik, A.; Stanislaus, T. D. S.; Staszak, D.; Strikhanov, M.; Stringfellow, B.; Suaide, A. A. P.; Suarez, M. C.; Subba, N. L.; Sumbera, M.; Sun, X. M.; Sun, Y.; Sun, Z.; Surrow, B.; Symons, T. J. M.; deToledo, A. Szanto; Takahashi, J.; Tang, A. H.; Tang, Z.; Tarnowsky, T.; Thein, D.; Thomas, J. H.; Tian, J.; Timmins, A. R.; Timoshenko, S.; Tlusty; Tokarev, M.; Trainor, T. A.; Tram, V. N.; Trattner, A. L.; Trentalange, S.; Tribble, Robert E.; Tsai, O. D.; Ulery, J.; Ullrich, T.; Underwood, D. G.; Van Buren, G.; van Leeuwen, M.; Molen, A. M. Vander; Vanfossen, J. A., Jr.; Varma, R.; Vasconcelos, G. M. S.; Vasilevski, I. M.; Vasiliev, A. N.; Videbaek, F.; Vigdor, S. E.; Viyogi, Y. P.; Vokal, S.; Voloshin, S. A.; Wada, M.; Waggoner, W. T.; Wang, F.; Wang, G.; Wang, J. S.; Wang, Q.; Wang, X.

2008-01-01T23:59:59.000Z

80

Argonne Physics Division - ATLAS  

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

[Argonne Logo] [DOE Logo] [Argonne Logo] [DOE Logo] Physics Division Home News Division Information Contact Organization Chart Directory ES&H Scientific Staff Publications Awards & Honors Pictures & Videos New Faces PHY Webmail Meeting Rooms Research Low Energy Medium Energy Theory Accelerator R&D Research Highlights Seminars & Events Colloquium Division Seminar MEP Seminar Theory Seminar Heavy Ion Discussion Student Lunch Talk ATLAS arrowdn Facility Schedules User Info Proposals Targetlab CARIBU FMA Gammasphere GRETINA HELIOS AGFA Search Argonne ... Search ATLAS Facility User Info Proposals Beam Schedule Safety Gammasphere GRETINA FMA CARIBU HELIOS AGFA Targetlab Workshop 2009 25 Years of ATLAS Gretina Workshop ATLAS Gus Savard Guy Savard, Scientific Director of ATLAS Welcome to ATLAS, the Argonne Tandem Linac Accelerator System. ATLAS is the

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81

Nuclear matter equation of state from relativistic heavy ions to supernovae  

SciTech Connect (OSTI)

In this presentation the relationship between relativistic nucleus-nucleus collisions and the nuclear equation of state is discussed. The connection between observables measured in the experiments and thermodynamic variables used to describe the system is made. Through this connection a semi-empirical nuclear equation of state is extracted from the data. The resulting equation of state is discussed in terms of nuclear matter calculations, neutron star stability and supernova collapse. 22 refs., 7 figs.

Harris, J.W.

1986-06-01T23:59:59.000Z

82

Relativistic viscous hydrodynamics for heavy-ion collisions with ECHO-QGP  

E-Print Network [OSTI]

We present ECHO-QGP, a numerical code for $(3+1)$-dimensional relativistic viscous hydrodynamics designed for the modeling of the space-time evolution of the matter created in high energy nuclear collisions. The code has been built on top of the \\emph{Eulerian Conservative High-Order} astrophysical code for general relativistic magneto-hydrodynamics [\\emph{Del Zanna et al., Astron. Astrophys. 473, 11, 2007}] and here it has been upgraded to handle the physics of the Quark-Gluon Plasma. ECHO-QGP features second-order treatment of causal relativistic viscosity effects in both Minkowskian or Bjorken coordinates; partial or complete chemical equilibrium of hadronic species before kinetic freeze-out; initial conditions based on the optical Glauber model, including a Monte-Carlo routine for event-by-event fluctuating initial conditions; a freeze-out procedure based on the Cooper-Frye prescription. The code is extensively validated against several test problems and results always appear accurate, as guaranteed by th...

Del Zanna, L; Inghirami, G; Rolando, V; Beraudo, A; De Pace, A; Pagliara, G; Drago, A; Becattini, F

2013-01-01T23:59:59.000Z

83

Relativistic viscous hydrodynamics for heavy-ion collisions with ECHO-QGP  

E-Print Network [OSTI]

We present ECHO-QGP, a numerical code for $(3+1)$-dimensional relativistic viscous hydrodynamics designed for the modeling of the space-time evolution of the matter created in high energy nuclear collisions. The code has been built on top of the \\emph{Eulerian Conservative High-Order} astrophysical code for general relativistic magneto-hydrodynamics [\\emph{Del Zanna et al., Astron. Astrophys. 473, 11, 2007}] and here it has been upgraded to handle the physics of the Quark-Gluon Plasma. ECHO-QGP features second-order treatment of causal relativistic viscosity effects in both Minkowskian or Bjorken coordinates; partial or complete chemical equilibrium of hadronic species before kinetic freeze-out; initial conditions based on the optical Glauber model, including a Monte-Carlo routine for event-by-event fluctuating initial conditions; a freeze-out procedure based on the Cooper-Frye prescription. The code is extensively validated against several test problems and results always appear accurate, as guaranteed by the combination of the conservative (shock-capturing) approach and the high-order methods employed. ECHO-QGP can be extended to include evolution of the electromagnetic fields coupled to the plasma.

L. Del Zanna; V. Chandra; G. Inghirami; V. Rolando; A. Beraudo; A. De Pace; G. Pagliara; A. Drago; F. Becattini

2013-05-30T23:59:59.000Z

84

Mean-field approach in the multi-component gas of interacting particles applied to relativistic heavy-ion collisions  

E-Print Network [OSTI]

Generalized mean-field approach for thermodynamic description of relativistic single- and multi-component gas in the grand canonical ensemble is formulated. In the framework of the proposed approach different phenomenological excluded-volume procedures are presented and compared to the existing ones. The mean-field approach is then used to effectively include hard-core repulsion in hadron-resonance gas model for description of chemical freeze-out in heavy-ion collisions. We calculate the collision energy dependence of several quantities for different values of hard-core hadron radius and for different excluded-volume procedures such as van der Waals and Carnahan-Starling models. It is shown that a choice of the excluded-volume model becomes important for large particle densities, and for large enough values of hadron radii ($r\\gtrsim0.9$ fm) there can be a sizable difference between different excluded-volume procedures used to describe the chemical freeze-out in heavy-ion collisions. For the smaller and more commonly used values of hard-core hadron radii ($r\\lesssim0.5$ fm) the van der Waals excluded-volume procedure is shown to be sufficient.

D. Anchishkin; V. Vovchenko

2015-01-23T23:59:59.000Z

85

Atlas Shelving Atlas Shelving  

E-Print Network [OSTI]

Atlas Shelving Atlas Shelving S35 S34 S33 S32 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B14 B15 B photos (oversize) Microfilm Collection and Reader Geological Atlas of the U.S. (1894 - 1925) On 2 atlas

O'Laughlin, Jay

86

J/psi production and elliptic flow in relativistic heavy-ion collisions  

E-Print Network [OSTI]

+ p collision, which is 63.7 ?b per unit rapidity near midrapidity at ? s = 200 GeV in pQCD [21]. The factor R in Eq. (7) takes into account the nonequilibrium effect of charm quarks in QGP and is evaluated according to R = 1? exp { ? ? ?QGP... PHYSICAL REVIEW C 83, 014914 (2011) then be obtained from its value at ith time step by adding the effect of acceleration relativistically, i.e., vi+1 = vi + v 1+ vi v , (14) where v = aiT t . For the thermal quantities in Eq. (11), we use...

Song, Taesoo; Ko, Che Ming; Lee, Su Houng; Xu, Jun.

2011-01-01T23:59:59.000Z

87

Behavior of secondary ? particles produced from relativistic heavy-ion collisions  

Science Journals Connector (OSTI)

The interaction mean free paths of ? particles in fragments emitted from two heavy-ion beams of Ar40 and Fe56, at an energy of ?2A GeV have been measured and were found to be the same, within statistical errors, at all distances from their production points.NUCLEAR REACTIONS Ar(or Fe )+Em??+X and mean free path of ?.

P. L. Jain; M. M. Aggarwal; G. Das; K. B. Bhalla

1982-06-01T23:59:59.000Z

88

Phase-Space Description of Momentum Spectra in Relativistic Heavy-Ion Collisions  

E-Print Network [OSTI]

We consider a phase-space model for particle production in nuclear collisions. Once the multiplicities of the individual particle species are known, single-inclusive momentum spectra can be computed after making simplifying assumptions for the matrix element for multiparticle production. Comparison of the calculated spectra with data for pions and kaons from central Pb+Pb collisions at E_{Lab}=158 AGeV reveals a residual longitudinal phase-space dominance in the final state of the reaction. We account for this by modifying the isotropic, relativistic invariant phase space in a way which retains boost invariance in beam direction but suppresses large transverse momenta. Adjusting a single parameter, we obtain a reasonably good description of transverse momentum and rapidity spectra for both pions and kaons.

Deinet, W; Deinet, Werner; Rischke, Dirk H.

2006-01-01T23:59:59.000Z

89

Argonne Physics Division - ATLAS  

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

Facility Facility User Info Proposals Beam Schedule Safety Gammasphere GRETINA FMA CARIBU HELIOS AGFA Targetlab Workshop 2009 25 Years of ATLAS Gretina Workshop ATLAS Gus Savard Guy Savard, Scientific Director of ATLAS Welcome to ATLAS, the Argonne Tandem Linac Accelerator System. ATLAS is the world's first superconducting linear accelerator for heavy ions at energies in the vicinity of the Coulomb barrier. This is the energy domain best suited to study the properties of the nucleus, the core of matter, the fuel of stars. ATLAS can provide beams of essentially all stable isotopes from proton to uranium, and a variety of light radioactive beams through our in-flight production program and heavier neutron-rich isotopes from the newly commissioned CARIBU upgrade. A one page brochure (pdf format)

90

Proceedings of the third workshop on experiments and detectors for a relativistic heavy ion collider (RHIC)  

SciTech Connect (OSTI)

This report contains papers on the following topics: the RHIC Project; summary of the working group on calorimetry; J//Psi/ measurements in heavy ion collisions at CERN; QCD jets at RHIC; tracking and particle identification; a 4..pi.. tracking spectrometer for RHIC; Bose-Einstein measurements at RHIC in light of new data; summary of working group on read-out electronics; data acquisition for RHIC; summary of the working group on detector simulation; B-physics at RHIC; and CP violation revisited at BNL, B-physics at RHIC.

Shivakumar, B.; Vincent, P.

1988-01-01T23:59:59.000Z

91

Recent results from HADES on electron pair production in relativistic heavy-ion collisions  

E-Print Network [OSTI]

Systematic investigations of dilepton production are performed at the SIS accelerator of GSI with the HADES spectrometer. The goal of this program is a detailed understanding of di-electron emission from hadronic systems at moderate temperatures and densities. New results obtained in HADES experiments focussing on electron pair production in elementary collisions are reported here. They pave the way to a better understanding of the origin of the so-called excess pairs earlier on observed in heavy-ion collisions by the DLS collaboration and lately confirmed in two measurements of the HADES collaboration using C+C and Ar+KCl collisions. Results of these studies are discussed.

The HADES Collaboration; T. Galatyuk; G. Agakishiev; A. Balanda; D. Belver; A. V. Belyaev; A. Blanco; M. Bhmer; J. L. Boyard; P. Braun-Munzinger; P. Cabanelas; E. Castro; S. Chernenko; T. Christ; M. Destefanis; J. Daz; F. Dohrmann; A. Dybczak; L. Fabbietti; O. V. Fateev; P. Finocchiaro; P. Fonte; J. Friese; I. Frhlich; J. A. Garzn; R. Gernhuser; A. Gil; C. Gilardi; M. Golubeva; D. Gonzlez-Daz; F. Guber; T. Hennino; R. Holzmann; I. Iori; A. Ivashkin; M. Jurkovic; B. Kmpfer; T. Karavicheva; D. Kirschner; I. Koenig; W. Koenig; B. W. Kolb; R. Kotte; F. Krizek; R. Krcken; W. Khn; A. Kugler; A. Kurepin; S. Lang; J. S. Lange; K. Lapidus; T. Liu; L. Lopes; M. Lorenz; L. Maier; A. Mangiarotti; J. Markert; V. Metag; B. Michalska; J. Michel; E. Morinire; J. Mousa; C. Mntz; L. Naumann; J. Otwinowski; Y. C. Pachmayer; M. Palka; Y. Parpottas; V. Pechenov; O. Pechenova; J. Pietraszko; W. Przygoda; B. Ramstein; A. Reshetin; A. Rustamov; A. Sadovsky; P. Salabura; A. Schmah; E. Schwab; Yu. G. Sobolev; S. Spataro; B. Spruck; H. Strbele; J. Stroth; C. Sturm; M. Sudol; A. Tarantola; K. Teilab; P. Tlusty; M. Traxler; R. Trebacz; H. Tsertos; V. Wagner; M. Weber; M. Wisniowski; T. Wojcik; J. Wstenfeld; S. Yurevich; Y. V. Zanevsky; P. Zhou

2009-11-12T23:59:59.000Z

92

Recent results from HADES on electron pair production in relativistic heavy-ion collisions  

E-Print Network [OSTI]

Systematic investigations of dilepton production are performed at the SIS accelerator of GSI with the HADES spectrometer. The goal of this program is a detailed understanding of di-electron emission from hadronic systems at moderate temperatures and densities. New results obtained in HADES experiments focussing on electron pair production in elementary collisions are reported here. They pave the way to a better understanding of the origin of the so-called excess pairs earlier on observed in heavy-ion collisions by the DLS collaboration and lately confirmed in two measurements of the HADES collaboration using C+C and Ar+KCl collisions. Results of these studies are discussed.

Galatyuk, T; Balanda, A; Belver, D; Belyaev, A V; Blanco, A; Bhmer, M; Boyard, J L; Braun-Munzinger, P; Cabanelas, P; Castro, E; Chernenko, S; Christ, T; Destefanis, M; Daz, J; Dohrmann, F; Dybczak, A; Fabbietti, L; Fateev, O V; Finocchiaro, P; Fonte, P; Friese, J; Frhlich, I; Garzn, J A; Gernhuser, R; Gil, A; Gilardi, C; Golubeva, M; Gonzlez-Daz, D; Guber, F; Hennino, T; Holzmann, R; Iori, I; Ivashkin, A; Jurkovic, M; Kmpfer, B; Karavicheva, T; Kirschner, D; Koenig, I; Koenig, W; Kolb, B W; Kotte, R; Krizek, F; Krcken, R; Khn, W; Kugler, A; Kurepin, A; Lang, S; Lange, J S; Lapidus, K; Liu, T; Lopes, L; Lorenz, M; Maier, L; Mangiarotti, A; Markert, J; Metag, V; Michalska, B; Michel, J; Morinire, E; Mousa, J; Mntz, C; Naumann, L; Otwinowski, J; Pachmayer, Y C; Palka, M; Parpottas, Y; Pechenov, V; Pechenova, O; Pietraszko, J; Przygoda, W; Ramstein, B; Reshetin, A; Rustamov, A; Sadovsky, A; Salabura, P; Schmah, A; Schwab, E; Sobolev, Yu G; Spataro, S; Spruck, B; Strbele, H; Stroth, J; Sturm, C; Sudol, M; Tarantola, A; Teilab, K; Tlusty, P; Traxler, M; Trebacz, R; Tsertos, H; Wagner, V; Weber, M; Wisniowski, M; Wojcik, T; Wstenfeld, J; Yurevich, S; Zanevsky, Y V; Zhou, P

2009-01-01T23:59:59.000Z

93

PHENIX Conceptual Design Report. An experiment to be performed at the Brookhaven National Laboratory Relativistic Heavy Ion Collider  

SciTech Connect (OSTI)

The PHENIX Conceptual Design Report (CDR) describes the detector design of the PHENIX experiment for Day-1 operation at the Relativistic Heavy Ion Collider (RHIC). The CDR presents the physics capabilities, technical details, cost estimate, construction schedule, funding profile, management structure, and possible upgrade paths of the PHENIX experiment. The primary goals of the PHENIX experiment are to detect the quark-gluon plasma (QGP) and to measure its properties. Many of the potential signatures for the QGP are measured as a function of a well-defined common variable to see if any or all of these signatures show a simultaneous anomaly due to the formation of the QGP. In addition, basic quantum chromodynamics phenomena, collision dynamics, and thermodynamic features of the initial states of the collision are studied. To achieve these goals, the PHENIX experiment measures lepton pairs (dielectrons and dimuons) to study various properties of vector mesons, such as the mass, the width, and the degree of yield suppression due to the formation of the QGP. The effect of thermal radiation on the continuum is studied in different regions of rapidity and mass. The e{mu} coincidence is measured to study charm production, and aids in understanding the shape of the continuum dilepton spectrum. Photons are measured to study direct emission of single photons and to study {pi}{sup 0} and {eta} production. Charged hadrons are identified to study the spectrum shape, production of antinuclei, the {phi} meson (via K{sup +}K{sup {minus}} decay), jets, and two-boson correlations. The measurements are made down to small cross sections to allow the study of high p{sub T} spectra, and J/{psi} and {Upsilon} production. The PHENIX collaboration consists of over 300 scientists, engineers, and graduate students from 43 institutions in 10 countries. This large international collaboration is supported by US resources and significant foreign resources.

Not Available

1993-01-29T23:59:59.000Z

94

phi and Omega production in relativistic heavy-ion collisions in a dynamical quark coalescence model RID A-2398-2009  

E-Print Network [OSTI]

of ? mesons and #2; baryons are related to those of strange and antistrange quarks is then examined. The dependence of these results on ? and #2; radii as well as on the strange quark mass is also studied. DOI: 10.1103/PhysRevC.73.044903 PACS number(s): 12...PHYSICAL REVIEW C 73, 044903 (2006) ? and #2; production in relativistic heavy-ion collisions in a dynamical quark coalescence model Lie-Wen Chen1,2 and Che Ming Ko3 1Institute of Theoretical Physics, Shanghai Jiao Tong University, Shanghai...

Chen, LW; Ko, Che Ming.

2006-01-01T23:59:59.000Z

95

Critical Scattering at the Chiral Phase Transition and low-p_t enhancement of mesons in ultra-relativistic heavy-ion collisions  

E-Print Network [OSTI]

The enhancement of pions and kaons observed at small transverse momenta in ultra-relativistic heavy-ion collisions may at least partly reflect critical scattering expected to occur in the neighborhood of a second order phase transition. Kinetic equations in the relaxation time approximation are proposed for the time evolution of the quark distribution function into that of the pions. Relaxation times for thermalization and hadronization processes are functions of momenta and approach zero in the limit p->0, a consequence of criticality at the phase transition. Data can be reproduced for suitably chosen parameters.

Jiri Dolejsi; Wojciech Florkowski; Joerg Huefner

1994-11-21T23:59:59.000Z

96

Heavy-quark probes of the quark-gluon plasma and interpretation of recent data taken at the BNL Relativistic Heavy Ion Collider  

E-Print Network [OSTI]

Thermalization and collective flow of charm (c) and bottom (b) quarks in ultrarelativistic heavy-ion collisions are evaluated based on elastic parton rescattering in an expanding quark-gluon plasma (QGP). We show that resonant interactions in a...

van Hees, H.; Greco, V.; Rapp, Ralf.

2006-01-01T23:59:59.000Z

97

The Relativistic Heavy Ion Collider (RHIC) cryogenic system at Brookhaven National Laboratory: Review of the modifications and upgrades since 2002 and planned improvements.  

SciTech Connect (OSTI)

Brookhaven National Laboratory continues its multi-year program to improve the operational efficiency, reliability, and stability of the cryogenic system, which also resulted in an improved beam availability of the Relativistic Heavy Ion Collider (RHIC). This paper summarizes the work and changes made after each phase over the past four years to the present, as well as proposed future improvements. Power usage dropped from an initial 9.4 MW to the present 5.1 MW and is expected to drop below 5 MW after the completion of the remaining proposed improvements. The work proceeded in phases, balancing the Collider's schedule of operation, time required for the modifications and budget constraints. The main changes include process control, compressor oil removal and management, elimination of the use of cold compressors and two liquid-helium storage tanks, insulation of the third liquid-helium storage tank, compressor-bypass flow reduction and the addition of a load turbine (Joule-Thomson ex

Than, R.; Tuozzolo, Joseph; Sidi-Yekhlef, Ahmed; Ganni, Venkatarao; Knudsen, Peter; Arenius, Dana

2008-03-01T23:59:59.000Z

98

A new scheme of causal viscous hydrodynamics for relativistic heavy-ion collisions: A Riemann solver for quarkgluon plasma  

SciTech Connect (OSTI)

In this article, we present a state-of-the-art algorithm for solving the relativistic viscous hydrodynamics equation with the QCD equation of state. The numerical method is based on the second-order Godunov method and has less numerical dissipation, which is crucial in describing of quarkgluon plasma in high-energy heavy-ion collisions. We apply the algorithm to several numerical test problems such as sound wave propagation, shock tube and blast wave problems. In sound wave propagation, the intrinsic numerical viscosity is measured and its explicit expression is shown, which is the second-order of spatial resolution both in the presence and absence of physical viscosity. The expression of the numerical viscosity can be used to determine the maximum cell size in order to accurately measure the effect of physical viscosity in the numerical simulation.

Akamatsu, Yukinao, E-mail: akamatsu@kmi.nagoya-u.ac.jp [KobayashiMaskawa Institute for the Origin of Particles and the Universe (KMI), Nagoya University, Nagoya 464-8602 (Japan)] [KobayashiMaskawa Institute for the Origin of Particles and the Universe (KMI), Nagoya University, Nagoya 464-8602 (Japan); Inutsuka, Shu-ichiro [Department of Physics, Nagoya University, Nagoya 464-8602 (Japan)] [Department of Physics, Nagoya University, Nagoya 464-8602 (Japan); Nonaka, Chiho [KobayashiMaskawa Institute for the Origin of Particles and the Universe (KMI), Nagoya University, Nagoya 464-8602 (Japan) [KobayashiMaskawa Institute for the Origin of Particles and the Universe (KMI), Nagoya University, Nagoya 464-8602 (Japan); Department of Physics, Nagoya University, Nagoya 464-8602 (Japan); Takamoto, Makoto [Department of Physics, Nagoya University, Nagoya 464-8602 (Japan) [Department of Physics, Nagoya University, Nagoya 464-8602 (Japan); Max-Planck-Institut fr Kernphysik, Postfach 103980, 69029 Heidelberg (Germany)

2014-01-01T23:59:59.000Z

99

Strangeness signals in heavy ion collisions  

SciTech Connect (OSTI)

The experimental data on strange meson and strange baryon production in relativistic heavy ion collisions are reviewed.

Remsberg, L.P.

1992-11-01T23:59:59.000Z

100

Strangeness signals in heavy ion collisions  

SciTech Connect (OSTI)

The experimental data on strange meson and strange baryon production in relativistic heavy ion collisions are reviewed.

Remsberg, L.P.

1992-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "atlas relativistic heavy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Net-baryon-, net-proton-, and net-charge kurtosis in heavy-ion collisions within a relativistic transport approach  

E-Print Network [OSTI]

We explore the potential of net-baryon, net-proton and net-charge kurtosis measurements to investigate the properties of hot and dense matter created in relativistic heavy-ion collisions. Contrary to calculations in a grand canonical ensemble we explicitly take into account exact electric and baryon charge conservation on an event-by-event basis. This drastically limits the width of baryon fluctuations. A simple model to account for this is to assume a grand-canonical distribution with a sharp cut-off at the tails. We present baseline predictions of the energy dependence of the net-baryon, net-proton and net-charge kurtosis for central ($b\\leq 2.75$ fm) Pb+Pb/Au+Au collisions from $E_{lab}=2A$ GeV to $\\sqrt{s_{NN}}=200$ GeV from the UrQMD model. While the net-charge kurtosis is compatible with values around zero, the net-baryon number decreases to large negative values with decreasing beam energy. The net-proton kurtosis becomes only slightly negative for low $\\sqrt{s_{NN}}$.

Marlene Nahrgang; Tim Schuster; Michael Mitrovski; Reinhard Stock; Marcus Bleicher

2012-09-03T23:59:59.000Z

102

The Relativistic Heavy Ion Collider (RHIC) Refrigerator System at Brookhaven National Laboratory: Phase III of the System Performance and Operations Upgrades for 2006  

Science Journals Connector (OSTI)

An ongoing program at Brookhaven National Laboratory (BNL) consists of improving the efficiency of the Relativistic Heavy Ion Collider (RHIC) cryogenic system and reducing its power consumption. Phase I and II of the program addressed plant operational improvements and modifications that resulted in substantial operational cost reduction and improved system reliability and stability and a compressor input power reduction of 2 MW has been demonstrated. Phase III now under way consists of plans for further increasing the efficiency of the plant by adding a load wet turbo?expander and its associated heat exchangers at the low temperature end of the plant. This additional stage of cooling at the coldest level will further reduce the required compressor flow and therefore compressor power input. This paper presents the results of the plant characterization as it is operating presently as well as the results of the plant simulations of the various planned upgrades for the plant. The immediate upgrade includes the changes associated with the load expander. The subsequent upgrade will involve the resizing of expander 5 and 6 to increase their efficiencies. The paper summarizes the expected improvement in the plant efficiency and the overall reduction in the compressor power.

A. Sidi?Yekhlef; R. Than; J. Tuozzolo; V. Ganni; P. Knudsen; D. Arenius

2006-01-01T23:59:59.000Z

103

Bulk Viscosity driven clusterization of quark-gluon plasma and early freeze-out in relativistic heavy-ion collisions  

E-Print Network [OSTI]

We introduce a new scenario for heavy ion collisions that could solve the lingering problems associated with the so-called HBT puzzle. We postulate that the system starts expansion as the perfect quark-gluon fluid but close to freeze-out it splits into clusters, due to a sharp rise of bulk viscosity in the vicinity of the hadronization transition. We then argue that the characteristic cluster size is determined by the viscosity coefficient and the expansion rate. Typically it is much smaller and independent of the total system volume. These clusters maintain the pre-existing outward-going flow, as a spray of droplets, but develop no flow of their own, and hadronize by evaporation. We provide an ansatz for converting the hydrodynamic output into clusters.

Giorgio Torrieri; Boris Tomasik; Igor Mishustin

2008-02-26T23:59:59.000Z

104

Bulk Viscosity driven clusterization of quark-gluon plasma and early freeze-out in relativistic heavy-ion collisions  

E-Print Network [OSTI]

We introduce a new scenario for heavy ion collisions that could solve the lingering problems associated with the so-called HBT puzzle. We postulate that the system starts expansion as the perfect quark-gluon fluid but close to freeze-out it splits into clusters, due to a sharp rise of bulk viscosity in the vicinity of the hadronization transition. We then argue that the characteristic cluster size is determined by the viscosity coefficient and the expansion rate. Typically it is much smaller and independent of the total system volume. These clusters maintain the pre-existing outward-going flow, as a spray of droplets, but develop no flow of their own, and hadronize by evaporation. We provide an ansatz for converting the hydrodynamic output into clusters.

Torrieri, G; Mishustin, I

2007-01-01T23:59:59.000Z

105

Entropy Production in Collisions of Relativistic Heavy Ions -- a signal for Quark-Gluon Plasma phase transition?  

E-Print Network [OSTI]

Entropy production in the compression stage of heavy ion collisions is discussed within three distinct macroscopic models (i.e. generalized RHTA, geometrical overlap model and three-fluid hydrodynamics). We find that within these models \\sim 80% or more of the experimentally observed final-state entropy is created in the early stage. It is thus likely followed by a nearly isentropic expansion. We employ an equation of state with a first-order phase transition. For low net baryon density, the entropy density exhibits a jump at the phase boundary. However, the excitation function of the specific entropy per net baryon, S/A, does not reflect this jump. This is due to the fact that for final states (of the compression) in the mixed phase, the baryon density \\rho_B increases with \\sqrt{s}, but not the temperature T. Calculations within the three-fluid model show that a large fraction of the entropy is produced by nuclear shockwaves in the projectile and target. With increasing beam energy, this fraction of S/A decreases. At \\sqrt{s}=20 AGeV it is on the order of the entropy of the newly produced particles around midrapidity. Hadron ratios are calculated for the entropy values produced initially at beam energies from 2 to 200 AGeV.

M. Reiter; A. Dumitru; J. Brachmann; J. A. Maruhn; H. Stcker; W. Greiner

1998-06-03T23:59:59.000Z

106

Core - Corona Model analysis of the Low Energy Beam Scan at RHIC (Relativistic Heavy Ion Collider) in Brookhaven (USA)  

E-Print Network [OSTI]

The centrality dependence of spectra of identified particles in collisions between ultrarelativistic heavy ions with a center of mass energy ($\\sqrt{s}$) of 39 and 11.5 $AGeV$ is analyzed in the core - corona model. We show that at these energies the spectra can be well understood assuming that they are composed of two components whose relative fraction depends on the centrality of the interaction: The core component which describes an equilibrated quark gluon plasma and the corona component which is caused by nucleons close to the surface of the interaction zone which scatter only once and which is identical to that observed in proton-proton collisions. The success of this approach at 39 and 11.5 $AGeV$ shows that the physics does not change between this energy and $\\sqrt{s}=200~ AGeV$ for which this model has been developed (Aichelin 2008). This presents circumstantial evidence that a quark gluon plasma is also created at center of mass energies as low as 11.5 $AGeV$.

M. Gemard; J. Aichelin

2014-02-02T23:59:59.000Z

107

ATLAS & Particle Detection The ATLAS Experiment  

E-Print Network [OSTI]

SCIPP ATLAS & Particle Detection The ATLAS Experiment and Particle Detection A.A. Grillo SCIPP - UCSC 1 #12;SCIPP ATLAS & Particle Detection A.A. Grillo What's Happening in this Bucolic Place? 2 Arial View of CERN and the Geneva Countryside #12;SCIPP ATLAS & Particle Detection A

California at Santa Cruz, University of

108

Argonne Physics Division - ATLAS  

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

The ATLAS Program Advisory Committee (PAC) Since ATLAS is a National User Facility and available for experiments to anyone in the world, all experiments to be performed at ATLAS...

109

ATLAS Metadata Task Force  

E-Print Network [OSTI]

ATLAS Metadata Task Force D. Costanzo, J. Cranshaw, S.provided and approved by the ATLAS TDAQ and DCS Connectinformation, go to http://atlas-connect-forum.web.cern.ch/

Costanzo, D.; ATLAS Collaboration

2009-01-01T23:59:59.000Z

110

Argonne Physics Division - ATLAS  

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

certain training requirements before they are allowed to have unescorted access to the ATLAS facility. These requirements are: Argonne Radiation Worker I Training ATLAS Site...

111

Argonne Physics Division - ATLAS  

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

initiatives that will enhance the scientific reach and efficient utilization of the ATLAS facility. These initiatives include the upgrade of ATLAS to provide multi-user...

112

Argonne Physics Division - ATLAS  

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

Registration Form Registered Participants ATLAS Upgrade Equipment Initiatives Stable Beams Radioactive Beams CARIBU Beams Workshop Reports ATLAS Strategic Plan (2009) CARIBU...

113

Search for a heavy Standard Model Higgs boson in the channel H?ZZ??[superscript +]?[superscript ?]q[bar over q] using the ATLAS detector  

E-Print Network [OSTI]

A search for a heavy Standard Model Higgs boson decaying via View the H?ZZ??[superscript +]?[superscript ?]q[bar over q], where ?=e,? is presented. The search is performed using a data set of pp collisions at ?s = 7 TeV, ...

Taylor, Frank E.

114

Argonne cranks up new heavy-ion accelerator  

Science Journals Connector (OSTI)

Argonne cranks up new heavy-ion accelerator ... Dedication ceremonies at Argonne National Laboratory last week celebrated completion of the Argonne Tandem Linear Accelerator System (ATLAS), the world's first superconducting accelerator for heavy ions. ... "We expect ATLAS to permit scientists to study certain aspects of nuclear structure and interactions more closely than ever before," says Argonne nuclear physicist Lowell M. Bollinger, manager of the ATLAS project. ...

1985-06-10T23:59:59.000Z

115

NOAA Atlas NESDIS 54 WORLD OCEAN ATLAS 2001  

E-Print Network [OSTI]

NOAA Atlas NESDIS 54 WORLD OCEAN ATLAS 2001 VOLUME 6: Chlorophyll Margarita E. Conkright Todd D. O.I. Antonov , 2002: World Ocean Atlas 2001, Volume 6: Chlorophyll. Ed. S. Levitus, NOAA Atlas NESDIS 54, U

116

NOAA Atlas NESDIS 49 WORLD OCEAN ATLAS 2001  

E-Print Network [OSTI]

NOAA Atlas NESDIS 49 WORLD OCEAN ATLAS 2001 VOLUME 1: Temperature Cathy Stephens John I. Antonov.E. Garcia, 2002: World Ocean Atlas 2001, Volume 1: Temperature. S. Levitus, Ed., NOAA Atlas NESDIS 49, U

117

NOAA Atlas NESDIS 50 WORLD OCEAN ATLAS 2001  

E-Print Network [OSTI]

NOAA Atlas NESDIS 50 WORLD OCEAN ATLAS 2001 VOLUME 2: Salinity Timothy P. Boyer Cathy Stephens John.E. Garcia, 2002: World Ocean Atlas 2001, Volume 1: Salinity. S. Levitus, Ed., NOAA Atlas NESDIS 50, U

118

NOAA Atlas NESDIS 53 WORLD OCEAN ATLAS 2001  

E-Print Network [OSTI]

NOAA Atlas NESDIS 53 WORLD OCEAN ATLAS 2001 VOLUME 5: Plankton Todd D. O'Brien Margarita E.E. Garcia, 2002: World Ocean Atlas 2001, Volume 5: Plankton. S. Levitus, Ed., NOAA Atlas NESDIS 53, U

119

NOAA Atlas NESDIS 52 WORLD OCEAN ATLAS 2001  

E-Print Network [OSTI]

NOAA Atlas NESDIS 52 WORLD OCEAN ATLAS 2001 VOLUME 4: Nutrients Margarita E. Conkright Hernan E.I. Antonov , 2002: World Ocean Atlas 2001, Volume 4: Nutrients. Ed. S. Levitus, NOAA Atlas NESDIS 52, U

120

NOAA Atlas NESDIS 51 WORLD OCEAN ATLAS 2001  

E-Print Network [OSTI]

NOAA Atlas NESDIS 51 WORLD OCEAN ATLAS 2001 VOLUME 3: Oxygen Ricardo A. Locarnini Todd D. O. Stephens, 2002: World Ocean Atlas 2001, Volume 3: Oxygen. S. Levitus, Ed., NOAA Atlas NESDIS 51, U

Note: This page contains sample records for the topic "atlas relativistic heavy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

NOAA Atlas NESDIS 69 WORLD OCEAN ATLAS 2009  

E-Print Network [OSTI]

NOAA Atlas NESDIS 69 WORLD OCEAN ATLAS 2009 Volume 2: Salinity Silver Spring, MD March 2010 U Atlas 2009 Volume 2: Salinity. S. Levitus Ed. NOAA Atlas NESDIS 69, U.S. Gov. Printing Office.html. National Oceanographic Data Center #12;NOAA Atlas NESDIS 69 WORLD OCEAN ATLAS 2009 Volume 2: Salinity John

122

NOAA Atlas NESDIS 68 WORLD OCEAN ATLAS 2009  

E-Print Network [OSTI]

NOAA Atlas NESDIS 68 WORLD OCEAN ATLAS 2009 Volume 1: Temperature Silver Spring, MD March 2010 U. Johnson, 2010. World Ocean Atlas 2009, Volume 1: Temperature. S. Levitus, Ed., NOAA Atlas NESDIS 68, U URL: http://www.nodc.noaa.gov/ #12;NOAA Atlas NESDIS 68 WORLD OCEAN ATLAS 2009 Volume 1: Temperature

123

ATLAS-Experiment Abbildung 50: Aufbau des ATLAS Detektors.  

E-Print Network [OSTI]

ATLAS-Experiment Abbildung 50: Aufbau des ATLAS Detektors. 98 #12;ATLAS-Experiment ATLAS, LHC, zu unterst¨utzen. Die DESY Gruppe wurde formal im Juli 2006 in die ATLAS Kollaboration aufgenom Beteiligung an ATLAS erfolgt in enger Koope- ration mit einer Gruppe der Humboldt Universit¨at zu Berlin und

124

ATLAS APPROVED EXPERIMENTS  

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

8MAY98 8MAY98 Exp # Spokesperson Experiment Title Days 433-9 Miller Ion Irradiations of Anisotropic High-Tc Superconductors: Probing Dynamics of Magnetic Vortices 2 651-2 Paul Accelerator-Mass-Spectrometry Measurements of Natural 236U Concentrations with the ECR-ATLAS System 4 667-2 Janssens Unsafe Coulex of the 238,239Pu Nuclei 4 669-2 Carpenter Excited States Associated with Different Shapes in 178Hg and Neighboring Odd-A Nuclei 4 673-2 Lister A Study of Radiative Decay from High Lying States in 24Mg 5 689-2 Freeman Spectroscopy of Odd Tin Isotopes Approaching 100Sn 5 693-2 Reiter Structure and Formation Mechanism of Heavy Elements - Request for additional beam time for Experiment 693 - 6 706 Kwok Heavy-Ion Lithography on High Temperature Superconductors 2 708 Yu In-Beam Spectroscopy Study of the Proton Emitter 109I with Recoil-Decay Tagging Technique

125

Production of Neutron-rich Heavy Residues and the Freeze-out Temperature in the Fragmentation of Relativistic 238U Projectiles Determined by the Isospin Thermometer  

E-Print Network [OSTI]

Isotope yields of heavy residues produced in collisions of 238U with lead at 1AGeV show indications for a simultaneous break-up process. From the average N-over-Z ratio of the final residues up to Z = 70, the average limiting temperature of the break-up configuration at freeze out was determined to T approximately 5 MeV using the isospin-thermometer method. Consequences for the understanding of other phenomena in highly excited nuclear systems are discussed.

K. -H. Schmidt; M. V. Ricciardi; A. Botvina; T. Enqvist

2002-07-24T23:59:59.000Z

126

Argonne Physics Division - ATLAS  

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

Beam Schedule Beam Schedule CARIBU Schedule ATLAS Future CARIBU Future Scheduling Considerations ATLAS Archive CARIBU Archive ATLAS Schedules Beamtime at ATLAS is normally scheduled in two-month blocks. We make every effort to produce an accurate schedule at least two weeks prior to its approval in a scheduling meeting. The scheduling process is continuously ongoing with communication between ATLAS personnel and the Principal Investigator (PI) of each experiment approved by the PAC. Follow the link at the left to learn more about the considerations that go into producing an ATLAS schedule. If you have any comments or concerns regarding this situation, please contact the ATLAS User Liaison Physicist (Shaofei Zhu, zhu@anl.gov), the Scientific Director of ATLAS (Guy Savard, savard@phy.anl.gov), or members

127

Argonne Physics Division - ATLAS  

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

the 25th anniversary of the dedication of ATLAS which took place on June 25, 1985. ATLAS was the world's first superconducting linac for ions. Since its dedication as a...

128

Argonne Physics Division - ATLAS  

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

The ATLAS User Program As the Nation's leading low-energy, stable beam accelerator facility, ATLAS has a diverse and vigorous user program. In a typical year, between 100...

129

Argonne Physics Division - ATLAS  

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

25th Anniversary Celebration R. Pardo Reminiscences 3: The Argonne-Notre Dame Gamma-ray Facility U. Garg Reminiscences 4: Atom Trap at ATLAS Z. T. Lu The Impact of ATLAS on SRF...

130

Electroweak Physics with ATLAS  

E-Print Network [OSTI]

The precision measurements of electroweak parameters of the Standard Model with the ATLAS detector at LHC are reviewed. An emphasis is put on the bridge connecting the ATLAS measurements with the SM analysis at LEP/SLC and the Tevatron.

Arif Akhundov

2008-08-13T23:59:59.000Z

131

Significant in-medium {eta}{sup '} mass reduction in {radical}(s{sub NN}) = 200 GeV Au+Au collisions at the BNL Relativistic Heavy Ion Collider  

SciTech Connect (OSTI)

In high-energy heavy ion collisions a hot and dense medium is formed, where the U{sub A}(1) or chiral symmetry may temporarily be restored. As a consequence, the mass of the {eta}{sup '}(958) mesons may be reduced to its quark model value, and the abundance of {eta}{sup '} mesons at low p{sub T} may be enhanced by more than a factor of 10. The intercept parameter {lambda}{sub *} of the charged pion Bose Einstein correlations provides a sensitive observable of the possibly enhanced {eta}{sup '} abundance. We have analyzed {lambda}{sub *}(m{sub T}) data from {radical}(s{sub N{sub N}})=200 GeV central Au+Au reactions measured at the BNL Relativistic Heavy Ion Collider (RHIC), using extensive Monte Carlo simulations based on six popular models for hadronic multiplicities. Based on the combined STAR and PHENIX data set, and on various systematic investigations of resonance multiplicities and model parameters, we conclude that in {radical}(s{sub N{sub N}})=200 GeV central Au+Au reactions the mass of the {eta}{sup '} meson is reduced by {Delta}m{sub {eta}}{sup '*}>200 MeV, at the 99.9% confidence level in the considered model class. Such a significant {eta}{sup '} mass modification may indicate the restoration of the U{sub A}(1) symmetry in a hot and dense hadronic matter and the return of the ninth ''prodigal'' Goldstone boson. A similar analysis of NA44 S+Pb data at top CERN Super Proton Synchroton (SPS) energies showed no significant in-medium {eta}{sup '} mass modification.

Vertesi, R.; Sziklai, J. [MTA KFKI RMKI, H-1515 Budapest 114, P.O. Box 49 (Hungary); Csoergo, T. [Department of Physics, Harvard University, 17 Oxford St, Cambridge, Massachusetts 02138 (United States); MTA KFKI RMKI, H-1515 Budapest 114, P.O. Box 49 (Hungary)

2011-05-15T23:59:59.000Z

132

Characterizing Heavy Ion  

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

Heavy Ion Heavy Ion Reactions in the 1980's Is there Treasure at the end of the Rainbow? & What happens and how do different modes compete? John Schiffer One of the three research areas for ATLAS, as stated in a 1984 document to Congress: Are there some new marvelous symmetries, hidden in resonances in heavier nuclei, beyond 12 C+ 12 C and its immediate vicinity? (s.c. linac work, pre-ATLAS) Other attempts to chase the rainbow 180 o elastic scattering of 12 C on 40 Ca shows structure Fusion of 16 O on 40 Ca does not. In the end, it seemed that these structures were sometimes present in alpha-particle nuclei, but almost never in others. Some optimists, continued the pursuit. We also looked at the total fusion cross section in systems that showed resonances in scattering.

133

The B->pi l nu and Bs->K l nu form factors and |Vub| from 2+1-flavor lattice QCD with domain-wall light quarks and relativistic heavy quarks  

E-Print Network [OSTI]

We calculate the form factors for B->pi l nu & Bs->K l nu decay in lattice QCD. We use the (2+1)-flavor RBC-UKQCD gauge field-ensembles generated with the domain-wall fermion and Iwasaki gauge actions. For the b quarks we use the anisotropic clover action with the relativistic heavy-quark interpretation. We analyze data at 2 lattice spacings a~0.11, 0.086 fm with pion masses as light as M_pi~290 MeV. We extrapolate our numerical results to the physical light-quark masses and to the continuum and interpolate in the pion/kaon energy using SU(2) "hard-pion" chiral perturbation theory. We provide complete systematic error budgets for the vector & scalar form factors f+(q^2) & f0(q2) for B->pi l nu & Bs ->K l nu at 3 momenta that span the q^2 range accessible in our numerical simulations. Next we extrapolate these results to q^2 = 0 using a model-independent z-parameterization based on analyticity & unitarity. We present our final results for f+(q^2) & f0(q^2) as the z coefficients and matr...

Flynn, J M; Kawanai, T; Lehner, C; Soni, A; Van de Water, R S; Witzel, O

2015-01-01T23:59:59.000Z

134

Relativistic Thermodynamics  

Science Journals Connector (OSTI)

It is shown that a generalized formulation of statistical mechanics provides a unified logical basis for the construction of a manifestly covariant theory of relativistic thermodynamics in contrast to heuristic approaches, such as the original theory by Planck and Einstein, and more recent ones by Ott and Mller. The generalized formalism is applied to discuss the relativistic thermodynamics of blackbody radiation, including such processes as the absorption and reflection of a light beam as well as the adiabatic cooling of cosmic blackbody radiation in Milne's model of the universe. The measurement of the temperature of a light beam is also discussed.

VICTOR H. HAMITY

1969-11-25T23:59:59.000Z

135

Atlas Finding Aid Contents/Index  

E-Print Network [OSTI]

Atlas Finding Aid Contents/Index A (1) City & State Atlas A (2) Astronomy Atlas A (3) U.S. Atlas A (4) Water Atlas A (5) South America & Central America A (6) Africa, Asia, &, Antarctica A (7) Mexico A (8) Geologic Atlases A (9) Environment / Forest & Desert A (10) Historic Atlases A (11) World Atlases

Ward, Karen

136

Report to users of ATLAS  

SciTech Connect (OSTI)

This report contains discussing in the following areas: Status of the Atlas accelerator; highlights of recent research at Atlas; concept for an advanced exotic beam facility based on Atlas; program advisory committee; Atlas executive committee; and Atlas and ANL physics division on the world wide web.

Ahmad, I.; Glagola, B. [eds.

1995-05-01T23:59:59.000Z

137

Measurements of hard probes of the quark-gluon plasma with the ATLAS experiment at the LHC  

E-Print Network [OSTI]

ATLAS results on the production of high-transverse momentum probes in Pb+Pb and p+Pb collisions at the LHC are presented. The focus is on the jet measurements, which provide a useful tool to study the hot, dense and coloured matter created in ultra-relativistic heavy ion collisions. The ATLAS experiment has measured inclusive jet yields in pp and Pb+Pb collisions at sqrt(s_NN) = 2.76 TeV and in p+Pb collisions at sqrt(s_NN) = 5.02 TeV. The jet nuclear modification factor, RAA, is shown as a function of jet pT, rapidity and collision centrality. The RAA weakly increases with pT, shows no dependence on rapidity and smoothly decreases with the collision centrality. In 10% of the most central collisions, jet production is suppressed by a factor of two relative to pp yields scaled by the number of binary nucleonnucleon collisions. Charged-particle fragmentation functions of jets are also measured and ratios of fragmentation functions between di erent centrality intervals show a centrality-dependent modification. T...

Wosiek, B; The ATLAS collaboration

2014-01-01T23:59:59.000Z

138

COADS Climate Atlas Atlantic Ocean  

E-Print Network [OSTI]

climate atlas follows with regard to structure and volume the Bunker Climate Atlas of the North Atlantic to the ship observations. Compared to the Bunker Atlas we expanded the considered sea area and included also

Lindau, Ralf

139

Argonne Physics Division - ATLAS  

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

Electrical Safety Considerations at ATLAS For onsite emergencies, call 911 on the internal phones (or 252-1911 on cell phones) Electricity will probably present the greatest hazard...

140

Argonne Physics Division - ATLAS  

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

improve and increase the capabilities it offers to its Users. ATLAS currently provides beams of essentially all stable isotopes at energies in the vicinity of the Coulomb barrier....

Note: This page contains sample records for the topic "atlas relativistic heavy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Argonne Physics Division - ATLAS  

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

Stable Beams Available from ATLAS Updated August, 2009 Beam currents listed in the table were obtained with naturally occurring material for the given isotope. The maximum energy...

142

ATLAS2000 Atlases of the Future in Internet M. Friedrich  

E-Print Network [OSTI]

ATLAS2000 ­ Atlases of the Future in Internet M. Friedrich (mafri@ipg.uni-freiburg.de) M. Melle the ecological system earth. Until recently the traditional atlas has been the pri- mary tool for collection and dissemination of geographical knowledge about the earth. To advance to concepts of the atlas it is necessary

Reiterer, Harald

143

NOAA Atlas NESDIS 75 WORLD OCEAN ATLAS 2013  

E-Print Network [OSTI]

NOAA Atlas NESDIS 75 WORLD OCEAN ATLAS 2013 Volume 3: Dissolved Oxygen, Apparent Oxygen Utilization. Antonov, A. V. Mishonov, O. K. Baranova, M. M. Zweng, J. R. Reagan, D. R. Johnson, 2013. World Ocean Atlas. Mishonov, Technical Ed. NOAA Atlas NESDIS 75, 27 pp. This document is available on-line at http

144

NOAA Atlas NESDIS 73 WORLD OCEAN ATLAS 2013  

E-Print Network [OSTI]

NOAA Atlas NESDIS 73 WORLD OCEAN ATLAS 2013 Volume 1: Temperature Silver Spring, MD September 2013. M. Zweng, C. R. Paver, J. R. Reagan, D. R. Johnson, M. Hamilton, D. Seidov, 2013. World Ocean Atlas 2013, Volume 1: Temperature. S. Levitus, Ed.; A. Mishonov, Technical Ed.; NOAA Atlas NESDIS 73, 40 pp

145

NOAA Atlas NESDIS 71 WORLD OCEAN ATLAS 2009  

E-Print Network [OSTI]

NOAA Atlas NESDIS 71 WORLD OCEAN ATLAS 2009 Volume 4: Nutrients (phosphate, nitrate, silicate. Baranova, and D. R. Johnson, 2010. World Ocean Atlas 2009, Volume 4: Nutrients (phosphate, nitrate, and silicate). S. Levitus, Ed., NOAA Atlas NESDIS 71, U.S. Government Printing Office, Washington, D.C., 398 pp

146

NOAA Atlas NESDIS 76 WORLD OCEAN ATLAS 2013  

E-Print Network [OSTI]

NOAA Atlas NESDIS 76 WORLD OCEAN ATLAS 2013 Volume 4: Dissolved Inorganic Nutrients (phosphate. Antonov, O. K. Baranova, M. M. Zweng, J.R. Reagan, D. R. Johnson, 2013. World Ocean Atlas 2013. Vol. 4. NOAA Atlas NESDIS 76, 25 pp. This document is available on-line at http://www.nodc.noaa.gov/OC5/indprod

147

NOAA Atlas NESDIS 70 WORLD OCEAN ATLAS 2009  

E-Print Network [OSTI]

NOAA Atlas NESDIS 70 WORLD OCEAN ATLAS 2009 Volume 3: Dissolved Oxygen, Apparent Oxygen Utilization. Antonov, O. K. Baranova, M. M. Zweng, and D. R. Johnson, 2010. World Ocean Atlas 2009 Volume 3: Dissolved Oxygen, Apparent Oxygen Utilization, and Oxygen Saturation. S. Levitus, Ed., NOAA Atlas NESDIS 70, U

148

NOAA Atlas NESDIS 74 WORLD OCEAN ATLAS 2013  

E-Print Network [OSTI]

NOAA Atlas NESDIS 74 WORLD OCEAN ATLAS 2013 Volume 2: Salinity Silver Spring, MD September 2013 U.K. Baranova, D.R. Johnson, D. Seidov, M.M. Biddle, 2013. World Ocean Atlas 2013, Volume 2: Salinity. S. Levitus, Ed.; A. Mishonov, Technical Ed.; NOAA Atlas NESDIS 74, 39 pp. This document is available on line

149

Relativistic Anelasticity  

E-Print Network [OSTI]

A formulation of Continuum Mechanics within the context of General Relativity is presented that allows for the incorporation of certain types of anelastic material behaviour, such as viscoelasticity and plasticity. The approach is based on the concept of a four-dimensional body-time complex structured as a principal bundle. The anelastic response is regarded as the result of a continuous distribution of inhomogeneities, whose evolution is dictated by a suggested relativistic version of the Eshelby tensor. The role played by various groups is emphasized throughout the presentation and illustrated by means of the example of an anelastic fluid.

M. Epstein; D. A. Burton; R. W. Tucker

2005-10-26T23:59:59.000Z

150

Atlas of Chiefdoms and Early States  

E-Print Network [OSTI]

file published with the Atlas has variable names and valuein subsequent editions of this Atlas the simple dichotomythe title suggests, this is an atlas of chiefdoms and early

Wright, Henry T.

2006-01-01T23:59:59.000Z

151

Argonne Physics Division - ATLAS  

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

Facility Facility Stable Beams Radioactive Beams CARIBU Beams Floorplan Phone Map Experimental Equipment Control System (internal) The ATLAS Facility ATLAS Operations Group The ATLAS Operations Group. ATLAS (the Argonne Tandem Linac Accelerator System) is the world's first superconducting accelerator for projectiles heavier than the electron. This unique system is a DOE National Collaborative Research Facility open to scientists from all over the world. ATLAS consists of a sequence of machines where each accelerates charged atoms and then feeds the beam into the next section for additional energy gain. The beams are provided by one of two 'injector' accelerators, either a 9 million volt (MV) electrostatic tandem Van de Graff, or a new 12-MV low-velocity linac and electron

152

NOAA Atlas NESDIS 56 RUSSIAN MARINE EXPEDITIONARY  

E-Print Network [OSTI]

NOAA Atlas NESDIS 56 RUSSIAN MARINE EXPEDITIONARY INVESTIGATIONS OF THE WORLD OCEAN Silver Spring International Ocean Atlas and Information Series, Volume 5 NOAA Atlas NESDIS 56 #12;World Data Center for Oceanography, Silver Spring International Ocean Atlas and Information Series

153

Relativistic Heavy Ion Collider Funding Agencies  

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

Funding Agencies Funding Agencies In addition to the operations funding received from the Office of Nuclear Physics within the U.S. Department of Energy's Office of Science, RHIC experiments receive funding from a variety of sources PHENIX U.S. National Science Foundation Ministry of Education, Culture, Sports, Science and Technology of Japan Japan Society for the Promotion of Science National Council for Scientific and Technological Development, Brazil Research Supporting Foundation of the State of Sao Paulo, Brazil National Natural Science Foundation of China National Institute of Nuclear Physics and Particle Physics of the National Center for Scientific Research of France Atomic Energy Commission of France ARMINES (France) Federal Ministry of Education and Research of Germany

154

Partonic coalescence in relativistic heavy ion collisions  

E-Print Network [OSTI]

significantly the spectr Elliptic flows of phi mesons and baryons such as protons evaluated from partons with elliptic flows extracted fro predicted proton and lambda elliptic flows are consisten DOI: 10.1103/PhysRevC.68.034904 I. INTRODUCTION Recently...d M e? r parton a th e transvers e ffec a PHYSICAL REVIEW C 68, 034904 ~2003! yields and their ratios, these new studies were more con- cerned with observables related to collective dynamics and production of hadrons with relatively...

Greco, V.; Ko, Che Ming; Levai, P.

2003-01-01T23:59:59.000Z

155

Meson interferometry in relativistic heavy ion collisions  

SciTech Connect (OSTI)

This report contains discussions on the following topics: Recent HBT results form CERN experiment NA44; interferometry results from E802/E859/E866; recent results on two particle correlations from E814; source sizes from CERN data; intermittency and interferometry; Bose-Einstein correlations in 200A GeV S+Au collisions; HBT correlations at STAR; HBT interferometry with PHENIX; HBT calculations from ARC; three pion correlations; and pion correlations in proton-induced reactions.

Not Available

1993-05-01T23:59:59.000Z

156

Top Physics at ATLAS  

E-Print Network [OSTI]

The Large Hadron Collider LHC is a top quark factory: due to its high design luminosity, LHC will produce about 200 millions of top quarks per year of operation. The large amount of data will allow to study with great precision the properties of the top quark, most notably cross-section, mass and spin. The Top Physics Working Group has been set up at the ATLAS experiment, to evaluate the precision reach of physics measurements in the top sector, and to study the systematic effects of the ATLAS detector on such measurements. This reports give an overview of the main activities of the ATLAS Top Physics Working Group in 2004.

Marcello Barisonzi

2005-08-02T23:59:59.000Z

157

Energy levels of a heavy ion moving in dense plasmas  

SciTech Connect (OSTI)

In this paper, the potential of a slowly moving test particle moving in collisional dense plasmas is studied. It is composed of the Debye-shielding potential, wake potential, and collision term. The Ritz variational-perturbational method is developed for calculating relativistic binding energy levels of a heavy ion moving in dense plasmas. Binding energy levels of a heavy ion moving in plasmas are calculated. The results show that both non-relativistic energy levels and relativistic energy levels become more negative as the temperature becomes high. They also become more negative as the number density decreasing. Relativistic correction is important for calculating binding energy levels. Both relativistic energy levels and non-relativistic energy levels vary minutely as the speed of heavy ion varies.

Hu, Hongwei; Chen, Wencong [Department of Physics, Shangqiu Normal University, Shangqiu 476000 (China)] [Department of Physics, Shangqiu Normal University, Shangqiu 476000 (China); Zhao, Yongtao [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China)] [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China); Li, Fuli [Department of Applied Physics, Xian Jiao-Tong University, Xian 710049 (China)] [Department of Applied Physics, Xian Jiao-Tong University, Xian 710049 (China); Dong, Chenzhong [College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070 (China)] [College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070 (China)

2013-12-15T23:59:59.000Z

158

ATLAS Forward Detectors and Physics  

E-Print Network [OSTI]

In this communication I describe the ATLAS forward physics program and the detectors, LUCID, ZDC and ALFA that have been designed to meet this experimental challenge. In addition to their primary role in the determination of ATLAS luminosity these detectors - in conjunction with the main ATLAS detector - will be used to study soft QCD and diffractive physics in the initial low luminosity phase of ATLAS running. Finally, I will briefly describe the ATLAS Forward Proton (AFP) project that currently represents the future of the ATLAS forward physics program.

N. Soni

2010-06-28T23:59:59.000Z

159

Atlas | OpenEI  

Open Energy Info (EERE)

Atlas Atlas Dataset Summary Description (Abstract): The Brazilian Atlas of Solar Energy is divided into five distinct sections. The first section describes the methodology used to obtain the solar radiation data and to produce the solar maps. The second section contains information on the confidence levels of the methodology employed, obtained by comparing solar estimates provided by BRASIL- SR model with estimates provided by other models and ground data. The third section presents the maps of various solar radiation components (global, direct, diffuse, tilted plane, and PAR). Source INPE - National Institute for Space Research Date Released December 31st, 2006 (8 years ago) Date Updated November 08th, 2007 (7 years ago) Keywords América Latina Atlas

160

Argonne Physics Division - ATLAS  

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

HP): 2-5722 (4-5722 pager) John Vacca (Alternate HP): 2-6180 (4-1978 pager, 630-327-9266 cell phone) ATLAS requires that a thermolescent dosimeter (TLD) badge be worn at all times...

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While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Argonne Physics Division - ATLAS  

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

following the end of their measurement. After 3 years, the data may be removed from the ATLAS computers and data-storage systems. However, every effort will be made to contact...

162

Argonne Physics Division - ATLAS  

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

Laboratory on AUGUST 8 and 9, 2009. As you are aware, major changes are in store for the ATLAS facility. First, the Energy Upgrade and the CARIBU (CAlifornium Rare Ion Breeder...

163

Argonne Physics Division - ATLAS  

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

Radioactive Beams Delivered by ATLAS Updated July, 2009 a Beams produced using the "In-flight" method (Rev. Sci. Instrum. 71, 380 (2008)) (see below). b Beams produced using the...

164

Argonne Physics Division - ATLAS  

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

Radioactive Beams Delivered by ATLAS Updated July, 2009 a Beams produced using the "In-flight" method (see below). b Beams produced using the "Two-accelerator" or "Batch" method...

165

Down Type Isosinglet Quarks in ATLAS  

E-Print Network [OSTI]

We evaluate the discovery reach of the ATLAS experiment for down type isosinglet quarks, $D$, using both their neutral and charged decay channels, namely the process $pp\\to D\\bar{D}+X$ with subsequent decays resulting in $2\\ell+2j+E^{miss}_{T}$, $3\\ell+2j+E^{miss}_{T}$ and $2\\ell+4j$ final states. The integrated luminosity required for observation of a heavy quark is estimated for a mass range between 600 and 1000 GeV using the combination of results from different search channels.

R. Mehdiyev; A. Siodmok; S. Sultansoy; G. Unel

2007-11-07T23:59:59.000Z

166

Open heavy flavor production at RHIC  

E-Print Network [OSTI]

The study of heavy flavor production in relativistic heavy ion collisions is an extreme experimental challenge but provides important information on the properties of the Quark-Gluon Plasma (QGP) created in Au+Au collisions at RHIC. Heavy-quarks are believed to be produced in the initial stages of the collision, and are essential on the understanding of parton energy loss in the dense medium created in such environment. Moreover, heavy-quarks can help to investigate fundamental properties of QCD in elementary p+p collisions. In this work we review recent results on heavy flavor production and their interaction with the hot and dense medium at RHIC.

A. A. P. Suaide

2007-02-16T23:59:59.000Z

167

ATLAS Enhanced Capabilities and Questions  

Broader source: Energy.gov [DOE]

ATLAS provides an enterprise wide solution for managing DOEs transportation activities. ATLAS combined and enhanced the existing tools in a reliable, efficient, user friendly and secure cloud platform.

168

BioFuels Atlas Presentation  

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

BioFuels Atlas Kristi Moriarty NREL May 12, 2011 NATIONAL RENEWABLE ENERGY LABORATORY Introduction * BioFuels Atlas is a first-pass visualization tool that allows users to explore...

169

ATLAS jet and missing ET reconstruction, calibration, and performance  

E-Print Network [OSTI]

ATLAS has achieved a very high precision on jet and missing transverse energy performance by the use of advanced calorimeter-based topological clustering and local cluster calibration, event-by-event pile-up subtraction methods, and in situ techniques to correct for the residual jet energy response difference between data and simulation. Tracking information is being combined with calorimeter to further improve the jet and missing ET performance. ATLAS has also commissioned several new powerful tools for for the analysis and interpretation of hadronic final states at the LHC such as jet substructure, jet mass, quark-gluon discrimination, and jet tagging tools for the identification of boosted heavy particles. An overview of the reconstruction, calibration and performance of jets, missing ET, and jet substructure and tagging at ATLAS is presented.

Crispin Ortuzar, M; The ATLAS collaboration

2014-01-01T23:59:59.000Z

170

ATLAS jet and missing-ET reconstruction, calibration, and performance  

E-Print Network [OSTI]

The ATLAS experiment has achieved a very high precision on jet and missing transverse energy performance by the use of advanced calorimeter-based topological clustering and local cluster calibration, event-by-event pile-up subtraction methods, and in situ techniques to correct for the residual jet energy response difference between data and simulation. Tracking information is being combined with calorimeter to further improve the jet and missing transverse energy performance. ATLAS has also commissioned several new powerful tools for the analysis and interpretation of hadronic final states at the LHC such as jet substructure, jet mass, quark-gluon discrimination, and jet tagging tools for the identification of boosted heavy particles. An overview of the reconstruction, calibration, and performance of jets, missing transverse energy, jet substructure, and jet tagging at ATLAS is presented.

Berta, P; The ATLAS collaboration

2014-01-01T23:59:59.000Z

171

Real-time flavor tagging selection in ATLAS  

E-Print Network [OSTI]

In high-energy physics experiments, online selection is crucial to reject most uninteresting collisions; in particular, b-jet selections, part of the ATLAS trigger strategy, are meant to select final states with heavy-flavor content. This is the only option to select fully hadronic final states containing b-jets, and is important to reject QCD light jets and maintain affordable trigger rates without raising jet energy thresholds. ATLAS operated b-jet triggers in both 2011 and 2012 data-taking campaigns and is now working to improve the performance of tagging algorithms for Run2. An overview of the ATLAS b-jet trigger strategy and its performance on real data is presented in this contribution, along with future prospects. Data-driven techniques to extract the online b-tagging performance, a key ingredient for all analyses relying on such triggers, are also discussed and results presented.

Sahinsoy, M; The ATLAS collaboration

2014-01-01T23:59:59.000Z

172

Real-time flavor tagging selection in ATLAS  

E-Print Network [OSTI]

In high-energy physics experiments the online selection is crucial to reject the overwhelming uninteresting collisions. In particular the ATLAS experiment includes b-jet selections in its trigger, in order to select final states with significant heavy-flavor content. Dedicated selections are developed to timely identifying fully hadronic final states containing b-jets and maintaining affordable trigger rates. ATLAS successfully operated b-jet trigger selections during both 2011 and 2012 Large Hadron Collider data-taking campaigns. Work is on-going now to improve the performance of online tagging algorithms to be deployed in Run 2 in 2015. An overview of the Run 1 ATLAS b-jet trigger strategy along with future prospects is presented in this paper. Data-driven techniques to extract the online b-tagging performance, a key ingredient for all analysis relying on such triggers, are also discussed and preliminary results presented.

Madaffari, D; The ATLAS collaboration

2014-01-01T23:59:59.000Z

173

DMBC: Introductions ATLAS Building Facilities  

E-Print Network [OSTI]

DMBC: Introductions ATLAS Building Facilities 3rd Floor - Film Editing Bays (South Hallway://tam.colorado.edu/checkout.php · ATLAS Building: Main Office (Room 223) · Checkout times: M-F, 1:00pm - 4:00pm Redwood Server Access it running. o Once connected, you may log into the Redwood server from off campus. File Management ATLAS

Stowell, Michael

174

An Atlas of Stellar Spectra  

E-Print Network [OSTI]

An Atlas of Stellar Spectra with an Outline of Spectral Classification ? W. W. Morgan Philip C University of California of the University of Chicago #12; An Atlas of Stellar Spectra with an Outline New York The Cambridge University Press London #12; AN ATLAS OF STELLAR SPECTRA With an Outline

Dworetsky, Mike

175

Atlas Project Members Jeffrey Adams  

E-Print Network [OSTI]

#12;#12;Atlas Project Members Jeffrey Adams Dan Barbasch Birne Binegar Bill Casselman Dan Ciubotaru It is not clear that it can be implemented on a computer Atlas of Lie Groups and Representations: #12;Overview this algorithm can be made explicit It is not clear that it can be implemented on a computer Atlas of Lie Groups

Adams, Jeffrey

176

Professional Paper 13 Climatological Atlas  

E-Print Network [OSTI]

NOAA Professional Paper 13 Climatological Atlas of the World Ocean Rockvilie, Ud. December 1982 U .l #12;ERRATA SHEET for: "Climatological Atlas of the World Ocean" NOAA Professional Paper No. 13 1. .. .. .. 3) Throughout the atlas the quantity Brunt-Vaisala frequency i s specified as having units of cycles

177

Argonne Physics Division - ATLAS  

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

REGISTRATION FORM REGISTRATION FORM Name: First Middle Last Organization: Department: Business Address: Street City State Zip Country Business Phone: Fax: E-mail: Citizenship: Additional information is needed for on-site access for non-US citizens who are not ATLAS Users. To download the form as a word document or pdf file, please go to the ATLAS user website (http://www.phy.anl.gov/atlas/users/visitor_info.html). Please return information to Barbara Weller by July 10, 2009. REGISTRATION Fees (If paying by check, please make check payable to: Argonne National Laboratory) Registration fee of $25 will be mailed? Pay at time of registration? Please state if you have special dietary needs. LODGING: Below are several area lodging facilities with rates and telephone numbers. Please make your reservation directly with the hotel. If you stay at the

178

Atlas-Building for Pediatric Airway Analysis  

E-Print Network [OSTI]

Atlas-Building for Pediatric Airway Analysis Young children with upper airway problems are at risk to form a "normal airway atlas." This atlas allows scoring of airways with respect to what is considered a normal control atlas. This atlas captures a representative average airway and its expected variation

Jeffay, Kevin

179

E-Print Network 3.0 - atlas pixel detektors Sample Search Results  

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

Search Powered by Explorit Topic List Advanced Search Sample search results for: atlas pixel detektors Page: << < 1 2 3 4 5 > >> 1 ATLAS ATLAS ATLAS ATLAS Summary: , 2000...

180

Relativistic nuclear structure. I. Nuclear matter  

Science Journals Connector (OSTI)

The formalism for the Dirac-Brueckner approach to the nuclear many-body problem is described including its basis in relativistic two-nucleon scattering. A family of relativistic meson-exchange potentials is constructed which (apart from the usual coupling terms for heavy mesons) apply the pseudovector (gradient) coupling for the interaction of pseudoscalar mesons (?,?) with nucleons. These potentials describe low-energy two-nucleon scattering and the deuteron data accurately. Using these potentials, the properties of nuclear matter are calculated in the Dirac-Brueckner-Hartree-Fock approximation, in which the empirical nuclear matter saturation is explained quantitatively. The effective two-body interaction in the nuclear matter medium (G matrix) is calculated directly in the nuclear matter rest frame. Thus, cumbersome transformations between the two-nucleon center-of-mass frame and the nuclear matter rest frame are avoided. Size and nature of relativistic effects included in the present approach are examined in detail. The formalism, the potentials, and the results of this paper may also serve as a basis and a realistic starting point for systematic relativistic nuclear structure studies as well as for the investigation of further relativistic many-body corrections and of contributions of higher order.

R. Brockmann and R. Machleidt

1990-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "atlas relativistic heavy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

ATLAS Inner Detector Event Data Model  

E-Print Network [OSTI]

offline/? cvsroot=atlas : InnerDetector/InDetRawEvent/ATLAS Inner Detector Event Data Model F. Akesson 1 , M.J.the Inner Detector of the ATLAS experiment is presented. Di?

Costa, M.J.; ATLAS

2009-01-01T23:59:59.000Z

182

ATLAS Offline Data Quality System Upgrade  

E-Print Network [OSTI]

teams. References The ATLAS Collaboration 2008 Journal ofConf. Ser. 219 042018 The ATLAS Collaboration 1996 Liquid10.1088/1742-6596/396/5/052032 ATLAS Offline Data Quality

Farrell, Steve

2012-01-01T23:59:59.000Z

183

Atlas Brasileiro de Energia Solar (Brazilian Atlas of Solar Energy) |  

Open Energy Info (EERE)

Atlas Brasileiro de Energia Solar (Brazilian Atlas of Solar Energy) Atlas Brasileiro de Energia Solar (Brazilian Atlas of Solar Energy) Dataset Summary Description (Abstract): The Brazilian Atlas of Solar Energy is divided into five distinct sections. The first section describes the methodology used to obtain the solar radiation data and to produce the solar maps. The second section contains information on the confidence levels of the methodology employed, obtained by comparing solar estimates provided by BRASIL- SR model with estimates provided by other models and ground data. The third section presents the maps of various solar radiation components (global, direct, diffuse, tilted plane, and PAR). The fourth section analyzes the temporal and spatial variations and trends of solar energy resources and, (Purpose): The Brazilian Atlas of Solar Energy is designed to supply for a portion of the demand for information

184

E-Print Network 3.0 - atlas test beam Sample Search Results  

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

test beam Search Powered by Explorit Topic List Advanced Search Sample search results for: atlas test beam Page: << < 1 2 3 4 5 > >> 1 ATLAS ATLAS ATLAS ATLAS Summary: ATLAS ATLAS...

185

Template:AtlasTabs | Open Energy Information  

Open Energy Info (EERE)

AtlasTabs Jump to: navigation, search Retrieved from "http:en.openei.orgwindex.php?titleTemplate:AtlasTabs&oldid686795...

186

ATLAS_Strategic_Plan_14_August _9  

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

ATLAS Accelerator Facility Physics Division Argonne National Laboratory Argonne, IL June 2014 2 Introduction This strategic plan is developed jointly by the ATLAS user community...

187

Transmission/Permitting Atlas | Open Energy Information  

Open Energy Info (EERE)

mittingAtlasHeader.png Roadmap Compare States General Transmission Dashboard Permitting Atlas Compare States Arizona California Colorado Idaho Montana Nevada New Mexico Oregon Utah...

188

Relativistic Nuclear Energy Density Functionals  

Science Journals Connector (OSTI)

......research-article Articles Relativistic Nuclear Energy Density Functionals Dario Vretenar...196, 2012 137 Relativistic Nuclear Energy Density Functionals Dario Vretenar...and P. Ring 2. Relativistic nuclear energy density functionals Even though......

Dario Vretenar; Tamara Niksic; Peter Ring

2012-10-01T23:59:59.000Z

189

Carbon Sequestration Atlas IV Video  

SciTech Connect (OSTI)

The Carbon Sequestration Atlas is a collection of all the storage sites of CO2 such as, petroleum, natural gas, coal, and oil shale.

Rodosta, Traci

2013-04-19T23:59:59.000Z

190

Argonne Physics Division - ATLAS  

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

April 22-23, 2011 April 22-23, 2011 ATLAS PAC Meeting Please note: Because of the pressure on ATLAS beam time, the PAC ranked the approved experiments in two categories. Priority I experiments are those that must be run at all costs. Priority II experiments are those that should be granted beam time (indicated in parenthesis) if at all possible. Priority I experiments are approved for the present cycle of experiments, but can be run during the next PAC cycle as well if scheduling conflicts occur. Priority II experiments that cannot be scheduled during the present cycle will have to be resubmitted at the next PAC meeting. It is our intention to try as hard as possible to schedule a full experimental program and to accommodate as many, if not all, of the priority II experiments.

191

Argonne Physics Division - ATLAS  

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

Safety Safety General Radiation Electrical Experiment Safety at ATLAS The Management and Staff at ATLAS and Argonne National Laboratory are fully dedicated to integrating safety into all aspects of work at our facilities. We believe that it is completely possible, and absolutely essenital, to carry out effective research programs without compromising safety. Indeed, the process of incorporating safety into accelerator operations and experimental research begins at the earliest stages. All experiments, equipment, and procedures are reviewed extensively for safety issues prior to their approval. For onsite emergencies, call 911 on the internal phones (or 252-1911 on cell phones) Safety Tom Mullen, Physics Division Safety Engineer. Please Note: If you have any comments or concerns regarding safety at

192

Relativistic hydrodynamics with quantum hadrodynamics equation of state  

Science Journals Connector (OSTI)

We derive the equation of state of the quantum hydrodynamics Lagrangian in a classical approach. The obtained equation of state is then used as input in a relativistic hydrodynamical numerical routine. Rapidity and transverse momentum distributions are calculated and compared with experimental data on heavy ion collisions obtained at the Brookhaven National Laboratory Alternating Gradient Synchrotron and the CERN Super Proton Synchrotron.

D. P. Menezes; F. S. Navarra; M. Nielsen; U. Ornik

1993-06-01T23:59:59.000Z

193

Stress tensor and bulk viscosity in relativistic nuclear collisions  

E-Print Network [OSTI]

We discuss the influence of different initial conditions for the stress tensor and the effect of bulk viscosity on the expansion and cooling of the fireball created in relativistic heavy ion collisions. In particular, we explore the evolution...however, it does not significantly increase the entropy produced....

Fries, Rainer J.; Mueller, Berndt; Schaefer, Andreas.

2008-01-01T23:59:59.000Z

194

Relativistic scattering coherence  

Science Journals Connector (OSTI)

Wave propagation through inhomogeneous, turbulent media is investigated for the case where the signal and inhomogeneities move relativistically. Although in classical treatments the mean-square angular deviations grow as the path length, this is found not to be true relativistically. Special attention is given to the problem of light propagating through a cosmological background of gravitational waves.

Eric V. Linder

1986-09-15T23:59:59.000Z

195

Atlas de la Biodiversit Marine du Gabon Marine Biodiversity Atlas for Gabon  

E-Print Network [OSTI]

Atlas de la Biodiversité Marine du Gabon Marine Biodiversity Atlas for Gabon Version 1: Avril 2012, Matthew J Witt #12;Atlas de la Biodiversité Marine du Gabon Marine Biodiversity Atlas for Gabon 1 Introduction Bienvenue à l'atlas Darwin de la Biodiversité Marine du Gabon (version 1; avril 2012). La mission

Exeter, University of

196

K.K. Gan ATLAS Tracker Upgrade Workshop 1 Progress Report on Joint ATLAS/CMS  

E-Print Network [OSTI]

K.K. Gan ATLAS Tracker Upgrade Workshop 1 Progress Report on Joint ATLAS/CMS SLHC Opto ATLAS Tracker Upgrade Workshop 2 Outline Introduction Subgroups activities Summary #12;K.K. Gan ATLAS System #12;K.K. Gan ATLAS Tracker Upgrade Workshop 4 Group A: Lesson Learned and to be Learned from LHC

Gan, K. K.

197

NOAA Atlas NESDIS 59 CLIMATIC ATLAS OF THE SEA OF AZOV 2006  

E-Print Network [OSTI]

NOAA Atlas NESDIS 59 CLIMATIC ATLAS OF THE SEA OF AZOV 2006 Silver Spring, MD July 2006 U, I. Smolyar 2006. Climatic Atlas of the Sea of Azov 2006. G. Matishov, S. Levitus, Eds., NOAA Atlas-2004 Number of stations: 14,289 , , CD , . The Atlas and associated data are being

198

Fast Shower Simulation in the ATLAS Calorimeter  

SciTech Connect (OSTI)

The time to simulate pp collisions in the ATLAS detector is largely dominated by the showering of electromagnetic particles in the heavy parts of the detector, especially the electromagnetic barrel and endcap calorimeters. Two procedures have been developed to accelerate the processing time of electromagnetic particles in these regions: (1) a fast shower parameterisation and (2) a frozen shower library. Both work by generating the response of the calorimeter to electrons and positrons with Geant 4, and then reintroduce the response into the simulation at runtime. In the fast shower parameterisation technique, a parameterization is tuned to single electrons and used later by simulation. In the frozen shower technique, actual showers from low-energy particles are used in the simulation. Full Geant 4 simulation is used to develop showers down to {approx} 1 GeV, at which point the shower is terminated by substituting a frozen shower. Judicious use of both techniques over the entire electromagnetic portion of the ATLAS calorimeter produces an important improvement of CPU time. We discuss the algorithms and their performance in this paper.

Barberio, E.; /Melbourne U.; Boudreau, J.; /Pittsburgh U.; Butler, B.; /SLAC; Cheung, S.L.; /Toronto U.; Dell'Acqua, A.; /CERN; Di Simone, A.; /CERN; Ehrenfeld, W.; /Hamburg U. /DESY; Gallas, M.V.; /CERN; Glazov, A.; /DESY; Marshall, Z.; /Caltech /Nevis Labs, Columbia U.; Mueller, J.; /Pittsburgh U.; Placakyte, R.; /DESY; Rimoldi, A.; /Pavia U. /INFN, Pavia; Savard, P.; /Toronto U.; Tsulaia, V.; /Pittsburgh U.; Waugh, A.; /Sydney U.; Young, C.C.; /SLAC

2011-11-08T23:59:59.000Z

199

January 11, 2007 Chicago ATLAS Group  

E-Print Network [OSTI]

for sLHC US ATLAS Tier 2 / 3 computing facility Joint with Indiana University Remote monitoringJ. Pilcher January 11, 2007 Chicago ATLAS Group #12;January 11, 2008 J. Pilcher2 Introduction Very exciting time for the LHC program and ATLAS First collisions later this year ATLAS will be ready Chicago

200

ATLAS INDETNO085 25 January 1995  

E-Print Network [OSTI]

ATLAS INDET­NO­085 25 January 1995 ATLAS SCT Technical Proposal Backup Document for the SemiConductor Tracker (SCT) for the ATLAS Detector at the Large Hadron Collider at CERN [Working Document ­ Version 1 : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 23 5 Electronics 32 5.1 Requirements of the ATLAS SCT electronics

Note: This page contains sample records for the topic "atlas relativistic heavy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Atlas Sodium Automated Batch Synthesis System  

E-Print Network [OSTI]

Atlas Sodium Automated Batch Synthesis System (Syrris) June 2013 #12;Introduction to the system · The Atlas Sodium system consists of an Atlas base equipped with a 400ºC hotplate, a stacking dry bath systemL) for automated addition and/or removal of solution. · The system is computer controlled by the Atlas software

Subramanian, Venkat

202

Canadian Atlas Map Bundle Data Creator /  

E-Print Network [OSTI]

Title: Canadian Atlas Map Bundle Data Creator / Copyright Owner: DMTI Spatial Inc. Publisher: DMTI Coverage Date(s): N/A Updates: N/A Abstract: The Canadian Atlas Map Bundle consists of the National Atlas Resources Canada (NRCan) for the National Atlas of Canada publication. Also included are DMTI's Populated

203

ATLAS Upgrade for sLHC Motivation  

E-Print Network [OSTI]

ATLAS Upgrade for sLHC · Motivation · LHC Upgrades · ATLAS Upgrade/schedule · R&D Variety · Russian Institutes involvement · Conclusions A.Cheplakov JINR, Dubna (on behalf of the ATLAS Collaboration) Many thanks to ATLAS colleagues for the useful information - N.Hessey, A.Loginov, A.Romaniouk, P

204

The ATLAS Forward Physics Program  

E-Print Network [OSTI]

We describe the ATLAS Forward Physics Program at low luminosity using the rapidity gap method and a dedicated detector called ALFA to tag the protons. We also describe the physics topics of the ATLAS Forward Physics Project at high instantaneous luminosity.

Christophe Royon

2010-08-19T23:59:59.000Z

205

Pion production in relativistic collisions of nuclear drops  

SciTech Connect (OSTI)

In a continuation of the long-standing effort of the nuclear physics community to model atomic nuclei as droplets of a specialized nuclear fluid, we have developed a hydrodynamic model for simulating the collisions of heavy nuclei at relativistic speeds. Our model couples ideal relativistic hydrodynamics with a new Monte Carlo treatment of dynamic pion production and tracking. The collective flow for low-energy (200 MeV/N) collisions predicted by this model compares favorably with results from earlier hydrodynamic calculations which used quite different numerical techniques. Our pion predictions at these lower energies appear to differ, however, from the experimental data on pion multiplicities. In this case of ultra-relativistic (200 GeV/N) collisions, our hydrodynamic model has produced baryonic matter distributions which are in reasonable agreement with recent experimental data. These results may shed some light on the sensitivity of relativistic collision data to the nuclear equation of state. 20 refs., 12 figs.

Alonso, C.T.; Wilson, J.R.; McAbee, T.L.; Zingman, J.A.

1988-09-01T23:59:59.000Z

206

Relativistic Nuclear Collisions  

E-Print Network [OSTI]

A comprehensive introduction is given to the field of relativistic nuclear collisions, and the phase diagram of strongly interacting matter. The content of this complex of reviews is shown.

Reinhard Stock

2009-07-29T23:59:59.000Z

207

Relativistic Atomic Structure Calculations  

Science Journals Connector (OSTI)

This review surveys methods for computing the electronic structures of atoms based on the use of relativistic quantum mechanics. The main mathematical formulas are presented with some account of the underlying...

Ian P. Grant

1988-01-01T23:59:59.000Z

208

TheK-shell ionization induced by protons: Projectile scattering angle and electronic relativistic effects in the SCA calculations  

Science Journals Connector (OSTI)

The behaviour ofK-shell ionization probabilities for heavy charged projectiles scattered at large angles is investigated in the SCA with hyperbolic trajectories and both relativistic and nonrelativistic functions...

O. Aashamar; L. Kocbach

1976-01-01T23:59:59.000Z

209

Residential appliances technology atlas  

SciTech Connect (OSTI)

Residential appliance technology and efficiency opportunities for refrigerators and freezers, cooking appliances, clothes washers and dryers, dishwashers, and some often-ignored household devices such as spas, pool pumps, waterbed heaters, televisions, and home computers are thoroughly covered in this Atlas. The US appliance market, fuel shares, efficiency standards, labeling, and advances in home automation, design for recycling, and CFC issues are also discussed. The resource section contains lists of appliance manufacturers and distributors, and trade, professional, and governmental organizations, a summary of key resources for further information, and an index.

NONE

1994-12-31T23:59:59.000Z

210

E-Print Network 3.0 - atlas pixel chip Sample Search Results  

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

chip Search Powered by Explorit Topic List Advanced Search Sample search results for: atlas pixel chip Page: << < 1 2 3 4 5 > >> 1 ATLAS ATLAS ATLAS ATLAS Summary: , 2000 ATLAS...

211

Relativistic viscoelastic fluid mechanics  

SciTech Connect (OSTI)

A detailed study is carried out for the relativistic theory of viscoelasticity which was recently constructed on the basis of Onsager's linear nonequilibrium thermodynamics. After rederiving the theory using a local argument with the entropy current, we show that this theory universally reduces to the standard relativistic Navier-Stokes fluid mechanics in the long time limit. Since effects of elasticity are taken into account, the dynamics at short time scales is modified from that given by the Navier-Stokes equations, so that acausal problems intrinsic to relativistic Navier-Stokes fluids are significantly remedied. We in particular show that the wave equations for the propagation of disturbance around a hydrostatic equilibrium in Minkowski space-time become symmetric hyperbolic for some range of parameters, so that the model is free of acausality problems. This observation suggests that the relativistic viscoelastic model with such parameters can be regarded as a causal completion of relativistic Navier-Stokes fluid mechanics. By adjusting parameters to various values, this theory can treat a wide variety of materials including elastic materials, Maxwell materials, Kelvin-Voigt materials, and (a nonlinearly generalized version of) simplified Israel-Stewart fluids, and thus we expect the theory to be the most universal description of single-component relativistic continuum materials. We also show that the presence of strains and the corresponding change in temperature are naturally unified through the Tolman law in a generally covariant description of continuum mechanics.

Fukuma, Masafumi; Sakatani, Yuho [Department of Physics, Kyoto University, Kyoto 606-8502 (Japan)

2011-08-15T23:59:59.000Z

212

PoS(2008LHC)053 First physics with ATLAS  

E-Print Network [OSTI]

PoS(2008LHC)053 First physics with ATLAS Dirk ZERWAS, on behalf of the ATLAS collaboration LAL, Orsay E-mail: zerwas@lal.in2p3.fr The expected performance of ATLAS for first physics is summarized with ATLAS Dirk ZERWAS, on behalf of the ATLAS collaboration 1. Introduction The ATLAS experiment is one

Paris-Sud XI, Université de

213

Search for Supersymmetry in Trilepton Final States with the ATLAS Detector and the Alignment of the ATLAS Silicon Tracker  

E-Print Network [OSTI]

One of the main goals of the ATLAS detector at the LHC of CERN, a proton-proton collider with a nominal centre-of-mass energy of 14 TeV, is to search for New Physics beyond the Standard Model (BSM). A widely favoured BSM candidate is Supersymmetry (SUSY), which postulates a superpartner for each Standard Model particle. The first part of this thesis describes a strategy for an early discovery of SUSY using the trilepton signature, with a focus on gravity-mediated SUSY breaking, mSUGRA. The discovery potential for SUSY for the case where strongly interacting supersymmetric particles are very massive is critically investigated. A possible choice of triggers for L = 10-31cm-2s-1 is suggested by optimising the event yield at intermediate and final selection stages. A novel method to measure the rate of leptons from heavy flavour decays passing isolation requirements by isolating tt events in data is outlined. The task of the ATLAS silicon tracker is to track particles produced in proton-proton collisions in its centre, measuring their momenta and production vertices. The precise knowledge of the silicon tracker module positions and their orientation in space (alignment) down to some microns and fractions of a miliradian in the critical coordinates is of vital importance for large parts of the ambitious ATLAS physics program. In the second part of the thesis, the alignment of the ATLAS silicon tracker using the Robust Alignment algorithm and particle tracks is described. The algorithm is applied to align end-cap A of the pixel detector using cosmic ray particle tracks recorded during its on-surface commissioning in 2006. Finally, about 2M cosmic ray tracks collected by ATLAS in situ in autumn 2008 are utilised to provide a coherent alignment of the entire silicon tracker with the Robust Alignment algorithm.

Oleg Brandt

2010-01-08T23:59:59.000Z

214

Time evolution of relativistic d + Au and Au + Au collisions  

E-Print Network [OSTI]

The evolution of charged-particle production in collisions of heavy ions at relativistic energies is investigated as function of centrality in a nonequilibrium-statistical framework. Precise agreement with recent d + Au and Au + Au data at sqrt(s_NN) = 200 GeV is found in a Relativistic Diffusion Model with three sources for particle production. Only the midrapidity source comes very close to local equilibrium, whereas the analyses of the overall pseudorapidity distributions show that the systems remain far from statistical equilibrium.

Georg Wolschin; Minoru Biyajima; Takuya Mizoguchi; Naomichi Suzuki

2006-02-17T23:59:59.000Z

215

E-Print Network 3.0 - atlas combined beam Sample Search Results  

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

Charged-particle multiplicities ... Source: Titov, Anatoly - Laboratory of Molecular Beams, Petersburg Nuclear Physics Institute Collection: Physics 2 ATLAS ATLAS ATLAS ATLAS...

216

BioFuels Atlas (Presentation)  

SciTech Connect (OSTI)

Presentation for biennial merit review of Biofuels Atlas, a first-pass visualization tool that allows users to explore the potential of biomass-to-biofuels conversions at various locations and scales.

Moriarty, K.

2011-02-01T23:59:59.000Z

217

NOAA Atlas NESDIS 58 CLIMATIC ATLAS OF THE ARCTIC SEAS 2004  

E-Print Network [OSTI]

NOAA Atlas NESDIS 58 CLIMATIC ATLAS OF THE ARCTIC SEAS 2004: Part I. Database of the Barents, Kara and Information Series, Volume 9 NOAA Atlas NESDIS 58 CLIMATIC ATLAS OF THE ARCTIC SEAS 2004: Part I. Database. INTRODUCTION................................................................................. 33 2. HISTORY

218

Atlas SCT/Pixel Grounding and Shielding ATLAS SCT/Pixel Grounding and Shielding Note  

E-Print Network [OSTI]

Atlas SCT/Pixel Grounding and Shielding 1 ATLAS SCT/Pixel Grounding and Shielding Note November 22 mostly connects existing mechanical electrical conductive #12; Atlas SCT/Pixel Grounding and Shielding 2 that equivalent. The barrel outer heat shield (150 aluminum) main element shield. #12; Atlas SCT/Pixel Grounding

California at Santa Cruz, University of

219

NOAA Atlas NESDIS 58 CLIMATIC ATLAS OF THE ARCTIC SEAS 2004  

E-Print Network [OSTI]

NOAA Atlas NESDIS 58 CLIMATIC ATLAS OF THE ARCTIC SEAS 2004: Part I. Database of the Barents, Kara, and Information Service #12;World Data Center for Oceanography, Silver Spring International Ocean Atlas and Information Series, Volume 9 NOAA Atlas NESDIS 58 2004: I

220

J. Astrophys. Astr. (0000) 00, 000000 ATLAS, and Wide-Angle Tail Galaxies in ATLAS  

E-Print Network [OSTI]

J. Astrophys. Astr. (0000) 00, 000­000 ATLAS, and Wide-Angle Tail Galaxies in ATLAS Minnie Y. Mao1 Telescope Compact Array (ATCA), ATLAS (Australia Telescope Large Area Survey) is imaging two fields large extent of 12 Mpc, with a velocity range of 4500 km s-1. Here we present the WATs in ATLAS

Norris, Ray

Note: This page contains sample records for the topic "atlas relativistic heavy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

NOAA Atlas NESDIS 67 CLIMATIC ATLAS OF THE NORTH PACIFIC SEAS 2009  

E-Print Network [OSTI]

NOAA Atlas NESDIS 67 CLIMATIC ATLAS OF THE NORTH PACIFIC SEAS 2009: Bering Sea, Sea of Okhotsk Administration National Environmental Satellite, Data, and Information Service #12;International Ocean Atlas and Information Series, Volume 12 Climatic Atlas of North Pacific Seas 2009 Additional copies

222

Muon Identification in the ATLAS Calorimeters  

E-Print Network [OSTI]

Muon Identification in the ATLAS Calorimeters #12;#12;Muon Identification in the ATLAS Calorimeters . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 2.2.3 Muon spectrometer . . . . . . . . . . . . . . . . . . . . . . . . . . 28 2.2.4 The forward . . . . . . . . . . . . . . . . . . . . . . . . . . 30 2.2.6 The trigger system . . . . . . . . . . . . . . . . . . . . . . . . . . 31 3 Muon

van Suijlekom, Walter

223

Studies of high transverse momentum phenomena in heavy ion collisions using the PHOBOS detector  

E-Print Network [OSTI]

The use of high-pT particles as calibrated probes has proven to be an effective tool for understanding the properties of the system produced in relativistic heavy ion collisions. In this thesis, two such measurements are ...

Wenger, Edward (Edward Allen)

2008-01-01T23:59:59.000Z

224

Testing Dirac-Brueckner models in collective flow of heavy-ion collisions  

Science Journals Connector (OSTI)

We investigate differential in-plane and out-of-plane flow observables in heavy-ion reactions at intermediate energies from 0.2-2 AGeV within the framework of relativistic BUU transport calculations. The mean fie...

T. Gaitanos; C. Fuchs; H.H. Wolter

2001-12-01T23:59:59.000Z

225

Aspects of heavy-ion collisions at the LHC  

SciTech Connect (OSTI)

Three aspects of relativistic heavy-ion collisions are considered in this article: (1) Stopping and baryon transport in a QCD-based approach, (2) charged-hadron production in a nonequilibrium-statistical relativistic diffusion model (RDM), and (3) quarkonia suppression and in particular, ? suppression in PbPb at the current LHC energy of ?(s{sub NN})?=?2.76TeV.

Wolschin, G. [Institut fr Theoretische Physik der Universitt Heidelberg, Philosophenweg 16, D-69120 Heidelberg (Germany)

2014-01-14T23:59:59.000Z

226

Real-time flavor tagging selection in ATLAS  

E-Print Network [OSTI]

In high-energy physics experiments on hadron colliders, online selection is crucial to reject most uninteresting collisions. In particular, the ATLAS experiment includes b-jet selections in its trigger strategy, in order to select final states with heavy-flavor content and enlarge its physics potentials. Dedicated selections are developed to quickly identify fully hadronic final states containing b-jets, while rejecting light QCD jets, and maintain affordable trigger rates without raising jet energy thresholds. ATLAS successfully operated b-jet trigger selections during both 2011 and 2012 data-taking campaigns and hard work is on-going now to improve the performance of tagging algorithms for coming Run2 in 2015. An overview of the ATLAS b-jet trigger strategy and its performance on real data is presented in this contribution, along with future prospects. Data-driven techniques to extract the online b-tagging performance, a key ingredient for all analyses relying on such triggers, are also discussed and result...

Madaffari, D; The ATLAS collaboration

2014-01-01T23:59:59.000Z

227

Barrington Atlas of the Greek and  

E-Print Network [OSTI]

Barrington Atlas of the Greek and Roman World Edited by Richard J. A. Talbert Since the 1870s, all of the Barrington Atlas in 2000.With ninety- nine full-color maps spread over 175 pages, and weighing nearly ten pounds, the Atlas re-created the world of the Greeks and Romans from the British Isles to the Indian

Landweber, Laura

228

Atlas of Quasicrystalline Tilings Clifford A. Reiter  

E-Print Network [OSTI]

Atlas of Quasicrystalline Tilings Clifford A. Reiter (preprint) Department of Mathematics-dimensions. The atlas gives many new intriguing quasicrystalline tilings in a systematic way. AMS classification scheme a mathematical curiosity. Our goal is to provide an atlas of tilings resulting from canonical projection

Reiter, Clifford A.

229

The ATLAS METADATA INTERFACE Solveig Albrand1  

E-Print Network [OSTI]

The ATLAS METADATA INTERFACE Solveig Albrand1 , Thomas Doherty2 , Jerome Fulachier1 and Fabian was chosen as the ATLAS dataset selection interface in July 2006. It is the main interface for searching for ATLAS data using physics metadata criteria. AMI has been implemented as a generic database management

Paris-Sud XI, Université de

230

ATLAS Upgrade Week 1 November 11, 2009  

E-Print Network [OSTI]

ATLAS Upgrade Week 1 November 11, 2009 Proposal to Develop On-Detector Array-based Optical Link A. Maettig Universität Wuppertal K.K. Gan A. Pellegrino, T. Sluijk NIKHEF (LHCb) #12;ATLAS Upgrade Week 2;ATLAS Upgrade Week 3 Introduction VCSEL and PIN are available in three forms: single channel or 4

Gan, K. K.

231

ATLAS Installation Guide R. Clint Whaley  

E-Print Network [OSTI]

ATLAS Installation Guide R. Clint Whaley November 2, 2007 Abstract This note provides a brief overview of ATLAS, and describes how to install it. It includes extensive discussion of common configure to configure and build the ATLAS package, this note also describes how an installer can confirm

Whaley, R. Clint

232

Atlas of the Columbia River Basin  

E-Print Network [OSTI]

#12;Atlas of the Columbia River Basin Oregon State University Computer-Assisted Cartography Course & GEOVISUALIZATION GROUP UNIVERSITY #12;2013 Oregon State University Atlas of the Columbia River Basin FOREWORDAtlas, Montana, Nevada, Wyoming, and Utah. 2013 Oregon State University Atlas of the Columbia River Basin

Jenny, Bernhard

233

Ian Hinchliffe News from ATLAS at LHC  

E-Print Network [OSTI]

1 Ian Hinchliffe News from ATLAS at LHC #12;2 Outline · LHC and ATLAS performance · Comments of features · JINST 3, (2008) S08003 #12;5 Superb LHC and ATLAS performance · This talk would not be possible · Now look at physics for which LHC was designed #12;13 Reminder of Higgs production · #12;14 Reminder

California at Santa Cruz, University of

234

Heavy Ion Physics at the LHC  

E-Print Network [OSTI]

The first Pb-Pb collisions at the LHC are little more than a year away. This paper discusses some of the exciting measurements which the experiments will be able to perform in the very first run, even with modest luminosity, and gives a very short overview of some of the most interesting ones attainable with more extended runs. The dedicated Heavy-Ion experiment ALICE, but also ATLAS and CMS, experiments optimized for p-p collisions, are ready and eager to make best use of the nuclear beams in the LHC as soon as they will be available. The main specificities of the three detectors for Heavy-Ion collisions will also be briefly addressed in this paper. I will try to show that already the first results obtainable with Heavy-Ion beams at the LHC will qualify it as a discovery machine, capable to provide fundamental new insight to our knowledge of high-density QCD matter.

P. Giubellino

2008-09-05T23:59:59.000Z

235

Neutron radii and the neutron equation of state in relativistic models  

Science Journals Connector (OSTI)

The root-mean-square radii for neutrons in nuclei and their relationship to the neutron equation of state are investigated in the relativistic Hartree model. A correlation between the neutron skin in heavy nuclei and the derivative of the neutron equation of state is found which provides a linear continuation of results obtained from nonrelativistic Hartree-Fock models. The relativistic models tend to give larger neutron radii and an associated stiffer neutron equation of state compared with the nonrelativistic models.

S. Typel and B. Alex Brown

2001-06-29T23:59:59.000Z

236

Characterization of Relativistic MHD Turbulence  

E-Print Network [OSTI]

The objective of this work is to understand if and how the characteristics of relativistic MHD turbulence may differ from those of nonrelativistic MHD turbulence. We accomplish this by studying the invariants in the relativistic case and comparing them to what we know of nonrelativistic turbulence. Although much work has been done to understand the dynamics of nonrelativistic systems (mostly for ideal incompressible fluids), there is minimal literature explicitly describing the dynamics of relativistic MHD turbulence. Many authors simply assume that relativistic turbulence has the same invariants and obeys the same inverse energy cascade as non-relativistic systems.

Garrison, David

2015-01-01T23:59:59.000Z

237

RE Atlas | Open Energy Information  

Open Energy Info (EERE)

RE Atlas RE Atlas Jump to: navigation, search Tool Summary LAUNCH TOOL Name: RE Atlas Agency/Company /Organization: National Renewable Energy Laboratory Sector: Energy Focus Area: Renewable Energy, Biomass, Geothermal, Solar, Water Power, Wind Resource Type: Maps, Software/modeling tools User Interface: Website Complexity/Ease of Use: Simple Website: maps.nrel.gov/re_atlas Country: United States Web Application Link: maps.nrel.gov/re_atlas Cost: Free OpenEI Keyword(s): Featured UN Region: Northern America Coordinates: 39.7412019515°, -105.172290802° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.7412019515,"lon":-105.172290802,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

238

ATLAS Cloud R&D  

E-Print Network [OSTI]

The computing model of the ATLAS experiment was designed around the concept of grid computing and, since the start of data taking, this model has proven very successful. However, new cloud computing technologies bring attractive features to improve the operations and elasticity of scientific distributed computing. ATLAS sees grid and cloud computing as complementary technologies that will coexist at different levels of resource abstraction, and two years ago created an R&D working group to investigate the different integration scenarios. The ATLAS Cloud Computing R&D has been able to demonstrate the feasibility of offloading work from grid to cloud sites and, as of today, is able to integrate transparently various cloud resources into the PanDA workload management system. The ATLAS Cloud Computing R&D is operating various PanDA queues on private and public resources and has provided several hundred thousand CPU days to the experiment. As a result, the ATLAS Cloud Computing R&D group has gained...

Panitkin, S; The ATLAS collaboration; Caballero Bejar, J; Benjamin, D; DiGirolamo, A; Gable, I; Hendrix, V; Hover, J; Kucharczuk, K; Medrano LLamas, R; Love, P; Ohman, H; Paterson, M; Sobie, R; Taylor, R; Walker, R; Zaytsev, A

2013-01-01T23:59:59.000Z

239

Anisotropic Flow and Jet Quenching in Relativistic Nuclear Collisions  

E-Print Network [OSTI]

The exploration of the strong-interaction matter under extreme conditions is one of the main goals of relativistic heavy-ion collisions. We provide some of the main results on the novel properties of quark-gluon plasma, with particular focus given to the strong collectivity and the color opaqueness exhibited by such hot and dense matter produced in high-energy nuclear collisions at RHIC and the LHC.

Qin, Guang-You

2015-01-01T23:59:59.000Z

240

ATLAS Equipment 1 June09  

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

Initiatives at ATLAS Initiatives at ATLAS Birger B. Back June 10, 2009. HELIOS Description: The Helical Orbit Spectrometer (HELIOS) is a novel spectrometer that will enable us to carry out detailed nuclear structure studies via inverse kinematics reactions using re-accelerated, neutron-rich beams from the new CARIBU injector as well as radioactive beams produced by the in-flight method at ATLAS. The spectrometer design has several advantages over conventional techniques using large-area Si detectors. These are: 1) avoidance of kinematical compression of states, 2) simple particle identification without ∆E measurements and the associated detection thresholds, 3) large acceptance achieved with relatively few Si detector channels. The superior performance of HELIOS

Note: This page contains sample records for the topic "atlas relativistic heavy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

ATLAS Nightly Build System Upgrade  

E-Print Network [OSTI]

The ATLAS Nightly Build System is a facility for automatic production of software releases. Being the major component of ATLAS software infrastructure, it supports more than 50 multi-platform branches of nightly releases and provides ample opportunities for testing new packages, for verifying patches to existing software, and for migrating to new platforms and compilers. The Nightly System testing framework runs several hundred integration tests of different granularity and purpose. The nightly releases are distributed and validated, and some are transformed into stable releases used for data processing worldwide. The first LHC long shutdown (2013-2015) activities will elicit increased load on the Nightly System as additional releases and builds are needed to exploit new programming techniques, languages, and profiling tools. This paper describes the plan of the ATLAS Nightly Build System Long Shutdown upgrade. It brings modern database and web technologies into the Nightly System, improves monitoring of nigh...

Dimitrov, G; The ATLAS collaboration; Simmons, B; Undrus, A

2013-01-01T23:59:59.000Z

242

Top quark properties at ATLAS  

E-Print Network [OSTI]

The ATLAS potential for the study of the top quark properties and physics beyond the Standard Model in the top quark sector, is described. The measurements of the top quark charge, the spin and spin correlations, the Standard Model decay (t-> bW), rare top quark decays associated to flavour changing neutral currents (t-> qX with X = gluon, Z, photon) and ttbar resonances are discussed. The sensitivity of the ATLAS experiment is estimated for an expected luminosity of 1fb-1 at the LHC. The full simulation of the ATLAS detector is used. For the Standard Model measurements the expected precision is presented. For the tests of physics beyond the Standard Model, the 5 sigma discovery potential (in the presence of a signal) and the 95% Confidence Level (CL) limit (in the absence of a signal) are given.

Dilip Jana; for the ATLAS Collaboration

2008-10-20T23:59:59.000Z

243

AN ATLAS OF LEGENDRIAN KNOTS WUTICHAI CHONGCHITMATE AND LENHARD NG  

E-Print Network [OSTI]

AN ATLAS OF LEGENDRIAN KNOTS WUTICHAI CHONGCHITMATE AND LENHARD NG Abstract. We present an atlas knots as well. The atlas incorporates a number of new, small examples of phenomena such as transverse at the back end of this paper in the form of a "Legendrian knot atlas". A corresponding atlas of transverse

Ng, Lenny

244

ATLAS STUDENT HANDBOOK 2014 -2015 Version: 26 August 2014  

E-Print Network [OSTI]

ATLAS STUDENT HANDBOOK 2014 - 2015 Version: 26 August 2014 Dear ATLAS student, This is the ATLAS student handbook, a short document with all relevant information for you as an ATLAS student at the University of Twente. In the following chapters you will find information on the university college ATLAS

Boucherie, Richard J.

245

ATLAS-Experiment Abbildung 64: Blick in die ATLAS Kaverne im Dezember 2007. Der Endkappen-Magnet  

E-Print Network [OSTI]

ATLAS-Experiment Abbildung 64: Blick in die ATLAS Kaverne im Dezember 2007. Der Endkappen-Magnet vor der endg¨ultigen Positionierung. 100 #12;ATLAS-Experiment ATLAS-Experiment Gruppenleiter: K. M¨onig, DESY DESY war 2007 im zweiten Jahr an dem Experi- ment ATLAS am Large Hadron Collider am CERN beteiligt

246

Extensivity and Relativistic Thermodynamics  

E-Print Network [OSTI]

The mathematical properties associated with the widely accepted concept of the extensivity of many of the common thermodynamic variables are examined and some of their consequences considered. The possible conflict between some of these and currently accepted results of special relativistic thermodynamics is highlighted. Although several questions are raised, answers are not advanced as this seems an area demanding calm, widespread reflection which could conceivably lead to radical revision of part, or parts, of theoretical physics.

J. Dunning-Davies

2007-06-27T23:59:59.000Z

247

ATLAS Tracking Event Data Model -- 12.0.0  

E-Print Network [OSTI]

viewcvs-all.cgi/offline/? cvsroot=atlas : Tracking/TrkEvent/all.cgi/ offline/? cvsroot=atlas : Tracking/TrkEvent/all.cgi/offline/? cvsroot=atlas : Tracking/TrkDetDescr/

Akesson, F.; ATLAS

2009-01-01T23:59:59.000Z

248

MHK Atlas | Open Energy Information  

Open Energy Info (EERE)

MHK Atlas MHK Atlas Jump to: navigation, search Tool Summary LAUNCH TOOL Name: MHK Atlas Agency/Company /Organization: NREL Sector: Energy Focus Area: Water Power Topics: Resource assessment, Technology characterizations Resource Type: Dataset, Maps, Software/modeling tools User Interface: Website Website: maps.nrel.gov/node/65 Web Application Link: maps.nrel.gov/mhk_atlas Cost: Free OpenEI Keyword(s): Featured Coordinates: 39.7412019515°, -105.172290802° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.7412019515,"lon":-105.172290802,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

249

Elliptic flow phenomenon at ATLAS  

E-Print Network [OSTI]

We summarize measurements of elliptic flow and higher order flow harmonics performed by the ATLAS experiment at the LHC. Results on event-averaged flow measurements and event-plane correlations in Pb+Pb collisions are discussed along with the event-by-event flow measurements. Further, we summarize results on flow in p+Pb collisions.

Martin Spousta

2014-06-20T23:59:59.000Z

250

Two particle correlation effects and Differential HBT for rotation in heavy ion collisions  

E-Print Network [OSTI]

Peripheral heavy ion reactions at ultra relativistic energies have large angular momentum that can be studied via two particle correlations using the Differential Hanbury Brown and Twiss method. We analyze the possibilities and sensitivity of the method in a rotating system. We also study an expanding solution of the fluid dynamical model of heavy ion reactions.

Csernai, L P; Wang, D J

2015-01-01T23:59:59.000Z

251

Formation of Superdense Hadronic Matter in High-Energy Heavy-Ion Collisions  

E-Print Network [OSTI]

We present the detail of a newly developed relativistic transport model (ART 1.0) for high energy heavy-ion collisions. Using this model, we first study the general collision dynamics between heavy ions at the AGS energies. We then show...

Li, Ba0-An; Ko, Che Ming.

1995-01-01T23:59:59.000Z

252

Nonlinear waves in strongly interacting relativistic fluids  

E-Print Network [OSTI]

During the past decades the study of strongly interacting fluids experienced a tremendous progress. In the relativistic heavy ion accelerators, specially the RHIC and LHC colliders, it became possible to study not only fluids made of hadronic matter but also fluids of quarks and gluons. Part of the physics program of these machines is the observation of waves in this strongly interacting medium. From the theoretical point of view, these waves are often treated with li-nearized hydrodynamics. In this text we review the attempts to go beyond linearization. We show how to use the Reductive Perturbation Method to expand the equations of (ideal and viscous) relativistic hydrodynamics to obtain nonlinear wave equations. These nonlinear wave equations govern the evolution of energy density perturbations (in hot quark gluon plasma) or baryon density perturbations (in cold quark gluon plasma and nuclear matter). Different nonlinear wave equations, such as the breaking wave, Korteweg-de Vries and Burgers equations, are obtained from different equations of state (EOS). In nuclear matter, the Walecka EOS may lead to a KdV equation. We explore equations of state such as those extracted from the MIT Bag Model and from QCD in the mean field theory approach. Some of these equations are integrable and have analytical solitonic solutions. We derive these equations also in spherical and cylindrical coordinates. We extend the analysis to two and three dimensions to obtain the Kadomtsev-Petviashvili (KP) equation, which is the generalization of the KdV. The KP is also integrable and presents analytical solitonic solutions. In viscous relativistic hydrodynamics we have second order patial derivatives which physically represent dissipation terms. We present numerical solutions and their corresponding algorithms for the cases where the equations are not integrable.

D. A. Fogaa; F. S. Navarra; L. G. Ferreira Filho

2012-12-31T23:59:59.000Z

253

UKERC Research Atlas: Tutorial on "Search the Atlas" Last Updated: 21/06/11 Guide on using the Integrated Search of the Research Atlas  

E-Print Network [OSTI]

UKERC Research Atlas: Tutorial on "Search the Atlas" Last Updated: 21/06/11 - 1 - Guide on using the Integrated Search of the Research Atlas This document describes how to use the search of the whole Research Atlas by guiding you through a series of searches, indicating what you should see and explaining what

254

Event by event fluctuations in heavy ion collisions  

SciTech Connect (OSTI)

The authors discuss the physics underlying event-by-event fluctuations in relativistic heavy ion collisions. We will argue that the fluctuations of the ratio of positively over negatively charged particles may serve as a unique signature for the Quark Gluon Plasma.

Koch, Volker

2001-01-01T23:59:59.000Z

255

Relativistic Gravity and Non-Relativistic Effective Field Theories  

E-Print Network [OSTI]

There has been great interest recently in formulating non-relativistic effective field theories in a general coordinate invariant way. We show that relativistic gravity theories can offer such a framework. We focus on the parity violating case in 2+1 dimensions which is particularly appropriate for the study on quantum Hall effects and chiral superfluids. We discuss how the non-relativistic spacetime structure emerges from relativistic gravity. We present covariant maps and constraints that relate the field contents in the two theories, which also serve as holographic dictionary in context of gauge/gravity duality. A low energy effective action for fractional quantum Hall states is constructed and captures universal geometric properties and generates non-universal corrections systematically. We give another holographic example with dyonic black brane background to calculate thermodynamic and transport properties of strongly coupled non-relativistic fluids in magnetic field. Our formalism has a good projection...

Wu, Chaolun

2014-01-01T23:59:59.000Z

256

Vibration by relativistic effects  

E-Print Network [OSTI]

Relativity, time reversal invariance in mechanics and principle of causality can be in the bases of a type of vibration of the extensive objects. It is because, the detailed analysis of the relativistic movement of an extensive body entail that all the objects must have inherent a vibratory movement to their own size. Such effect does not happen when it works with point particles thus is not stranger who happens unnoticed in the traditional studies. Also we can find relation between the form of vibration of the extensive objects and the energy that calculates by quantum considerations.

Enrique Oradaz Romay

2005-12-23T23:59:59.000Z

257

IRENA Global Atlas | Open Energy Information  

Open Energy Info (EERE)

policy development and energy planning, and can support investors in entering renewable energy markets. Why develop a Global Atlas of renewable energy potential? What share of a...

258

Structured Storage in ATLAS Distributed Data Management  

E-Print Network [OSTI]

CHEP'12 Talk Structured Storage - Concepts - Technologies ATLAS DDM Use Cases - Storage facility - Data intensive analytics Operational Experiences - Software - Hardware Conclusions

Lassnig, M; The ATLAS collaboration; Molfetas, A; Beermann, T; Dimitrov, G; Canali, L; Zang, D

2012-01-01T23:59:59.000Z

259

Direct photons in ATLAS@LHC  

Science Journals Connector (OSTI)

The ATLAS detector at the LHC is capable of efficiently separating photons and...?, ? and E T , either in addition to or instead of isolation cuts. This provides...

Mark D. Baker; Jiangyong Jia; Peter Steinberg

2010-12-01T23:59:59.000Z

260

The Relativistic Heavy Ion Collider (RHIC) - the nation's only remaining  

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

Collider (RHIC) - the nation's only remaining Collider (RHIC) - the nation's only remaining particle collider, located at Brookhaven National Laboratory - has made a series of landmark discoveries and continuing breakthroughs in science and technology. One major accomplishment has been RHIC's ability to recreate and study in detail a type of matter that last existed at the beginning of the universe to better understand the strongest force in nature - the force that holds together the fundamental particles that make up 99 percent of visible matter in the universe today, everything from stars to planets to people. In addition to giving us a new way to explore and understand the nature of the early universe and the force that holds together ordinary matter, research at RHIC has revealed stunning

Note: This page contains sample records for the topic "atlas relativistic heavy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Velocity of sound in relativistic heavy-ion collisions  

Science Journals Connector (OSTI)

We have studied the rapidity distribution of secondary hadrons produced in nucleus-nucleus collisions at ultrarelativistic energies within the ambit of the Landaus hydrodynamical model. A reasonable description of the data can also be obtained by using the Bjorkens hydrodynamical model if the boost invariance is restricted to a finite rapidity range. The sensitivity of the hadronic spectra on the equation of state vis--vis the velocity of sound has been discussed. The correlation between the velocity of sound and the freeze-out temperature has been indicated. The effects of the nonzero widths of various mesonic and baryonic degrees of freedom up to the mass value ?2.5GeV are seen to be small.

Bedangadas Mohanty and Jan-e Alam

2003-12-11T23:59:59.000Z

262

K+ Production in Relativistic Heavy-Ion Collisions  

E-Print Network [OSTI]

experimental data on K+ production at 2.1 GeV/nucleon are not explained by either the cascade model or the fireball model. Here we introduce a hybrid model in which the total kaon yield is given by individual nucleon- nucleon collisions but its momentum.... Various suggestions have been proposed for un- derstanding the experimental data. Schnetzer et pl. 4 suggest that high energy pions (with energy above =700 MeV) produced in the collision may collide with nucleons to produce K' with large mo- mentum...

Ko, Che Ming.

1981-01-01T23:59:59.000Z

263

BRAHMS Collaboration results for Relativistic Heavy Ion Collisions 1  

E-Print Network [OSTI]

arm magnetic spectrometer with very good momentum resolution and particle identification capabilities;identification. BRAHMS setup also includes a set of global detectors used for multiplicity mesurements and for triggering purposes. 3 Bulk properties of the hot and dense nuclear matter One of the first questions which

264

Kaon differential flow in relativistic heavy-ion collisions  

E-Print Network [OSTI]

flow is caused by a repulsive in-medium kaon 3 @21# M. Pollack, Ph.D. thesis, SUNY at Stony Brook, 1997. @22# S. A. Voloshin for the E877 Collaboration, Nucl. Phys. A638, 455c ~1998!. @23# C. David, C. Hartnack, and J. Aichelin, Nucl. Phys. A ~to...!. @28# S. A. Voloshin, Phys. Rev. C 55, R1630 ~1997!. @29# A. M. Poskanzer and S. A. Voloshin, Phys. Rev. C 58, 1671 ~1998!. BAO-AN LI, BIN ZHANG, ANDREW T. SUSTICH, AND C. M. KO PHYSICAL REVIEW C 60 034902 034902-4 ...

Li, Ba; Zhang, B.; Sustich, AT; Ko, Che Ming.

1999-01-01T23:59:59.000Z

265

Hydrodynamics and fluctuations in relativistic heavy-ion collisions  

E-Print Network [OSTI]

: centrality dependence Data > hydro Small discrepancy between STAR and PHENIX data Au-Au collision per nucleon is in the details! A small effect: Average value 0.3%, maximum value 3% Should we care? #12;A primer is independent of pT, as predicted by hydro. But... the value is significantly larger than 0.5 #12;More data

266

Elliptic flow of deuterons in relativistic heavy-ion collisions  

E-Print Network [OSTI]

, 663 (1997). [4] P. Danielewicz, R. A. Lacey, P. B. Gossiaux, C. Pinkenburg, P. Chung, J. M. Alexander, and R. L. McGrath, Phys. Rev. Lett. 81, 2438 (1998). [5] R. A. Lacey, Nucl. Phys. A774, 199 (2006). [6] STAR Collaboration, J. Adams et al..., 809 (2003). [27] T. Z. Yan et al., Phys. Lett. B638, 50 (2006). [28] L. P. Csernai and J. I. Kapusta, Phys. Rep. 131, 223 (1986). [29] P. Danielewicz and G. F. Bertsch, Nucl. Phys. A533, 712 (1991). [30] A. Deloff and T. Siemiarczuk, Nucl. Phys...

Oh, Yongseok; Ko, Che Ming.

2007-01-01T23:59:59.000Z

267

Search for Heavy Resonances at the LHC  

E-Print Network [OSTI]

Numerous models beyond the Standard Model theory predict new heavy particles or high energy phenomena that would appear as heavy resonances in collider data. Such a signature was thus actively searched for by the ATLAS and CMS collaborations using the LHC 8 TeV proton-proton collisions. The most recent analyses using the full dataset (~ 20 fb-1) and probing a large variety of final states are reported in this article. No sign of new physics was discovered and the results are thus interpreted as exclusion limits in a model independent way or on various models based on the presence of extra-dimensions, a new strong sector or large symmetry groups.

Crp-Renaudin, Sabine; The ATLAS collaboration

2015-01-01T23:59:59.000Z

268

High energy heavy ions: techniques and applications  

SciTech Connect (OSTI)

Pioneering work at the Bevalac has given significant insight into the field of relativistic heavy ions, both in the development of techniques for acceleration and delivery of these beams as well as in many novel areas of applications. This paper will outline our experiences at the Bevalac; ion sources, low velocity acceleration, matching to the synchrotron booster, and beam delivery. Applications discussed will include the observation of new effects in central nuclear collisions, production of beams of exotic short-lived (down to 1 ..mu..sec) isotopes through peripheral nuclear collisions, atomic physics with hydrogen-like uranium ions, effects of heavy ''cosmic rays'' on satellite equipment, and an ongoing cancer radiotherapy program with heavy ions. 39 refs., 6 figs., 1 tab.

Alonso, J.R.

1985-04-01T23:59:59.000Z

269

Higgs Boson Searches with ATLAS  

Science Journals Connector (OSTI)

Strategies of searches for the Higgs boson with the ATLAS detector at the LHC are discussed using data from 2010 and 2011. A summary of the sensitivity of ATLAS to discover a Standard Model (SM) Higgs boson is shown for the following decay channels: H ? ? ? , H ? W W ? l + ? l ? ? , H ? W W ? l ? q q , H ? Z Z ( ? ) ? l + l ? l + l ? , H ? Z Z ( ? ) ? l + l ? q q . Some prospects for the Minimal Supersymmetric extension of the Standard Model (MSSM) Higgs searches in the H ? ? + ? ? channel are also included with as well as search for a generic scalar at low mass in the vicinity of the ? resonance, decaying to a pair of muons. Limits are given at the 95% confidence level (CL) on the production cross section relative to the Standard Model and to the MSSM predictions.

Julia A. Hoffman

2011-01-01T23:59:59.000Z

270

SUSY Parameters Determination with ATLAS  

E-Print Network [OSTI]

The plan for mass and spin measurement of SUSY particles with the ATLAS detector is presented. The measurements of kinematical distributions, such as edges in the invariant mass of leptons and jets, could be used to constrain the model of SUSY that may be discovered at the LHC. Examples from a few points in the mSUGRA scenario are provided with an emphasis on measurements that can be conducted within the first few years of data taking.

N. Ozturk; for the ATLAS Collaboration

2007-10-25T23:59:59.000Z

271

Measurements of phi meson production in relativistic heavy-ion collisions at the BNL Relativistic Heavy Ion Collider (RHIC)  

E-Print Network [OSTI]

. Vasilevski,13 A. N. Vasiliev,32 F. Videbaek,3 S. E. Vigdor,16 Y. P. Viyogi,14 S. Vokal,12 S. A. Voloshin,49 M. Wada,42 W. T. Waggoner,10 F. Wang,33 G. Wang,6 J. S. Wang,21 Q. Wang,33 X. Wang,43 X. L. Wang,38 Y. Wang,43 J. C. Webb,45 G. D. Westfall,25 C...

Abelev, B. I.; Aggarwal, M. M.; Ahammed, Z.; Anderson, B. D.; Arkhipkin, D.; Averichev, G. S.; Bai, Y.; Balewski, J.; Barannikova, O.; Barnby, L. S.; Baudot, J.; Baumgart, S.; Beavis, D. R.; Bellwied, R.; Benedosso, F.; Betts, R. R.; Bhardwaj, S.; Bhasin, A.; Bhati, A. K.; Bichsel, H.; Bielcik, J.; Bielcikova, J.; Biritz, B.; Bland, L. C.; Blyth, S. -L; Bombara, M.; Bonner, B. E.; Botje, M.; Bouchet, J.; Braidot, E.; Brandin, A. V.; Bruna, E.; Bueltmann, S.; Burton, T. P.; Bystersky, M.; Cai, X. Z.; Caines, H.; Sanchez, M. Calderon de la Barca; Callner, J.; Catu, O.; Cebra, D.; Cendejas, R.; Cervantes, M. C.; Chajecki, Z.; Chaloupka, P.; Chattopadhyay, S.; Chen, H. F.; Chen, J. H.; Chen, J. Y.; Cheng, J.; Cherney, M.; Chikanian, A.; Choi, K. E.; Christie, W.; Chung, S. U.; Clarke, R. F.; Codrington, M. J. M.; Coffin, J. P.; Cormier, T. M.; Cosentino, M. R.; Cramer, J. G.; Crawford, H. J.; Das, D.; Dash, S.; Daugherity, M.; De Silva, C.; Dedovich, T. G.; DePhillips, M.; Derevschikov, A. A.; de Souza, R. Derradi; Didenko, L.; Djawotho, P.; Dogra, S. M.; Dong, X.; Drachenberg, J. L.; Draper, J. E.; Du, F.; Dunlop, J. C.; Mazumdar, M. R. Dutta; Edwards, W. R.; Efimov, L. G.; Elhalhuli, E.; Elnimr, M.; Emelianov, V.; Engelage, J.; Eppley, G.; Erazmus, B.; Estienne, M.; Eun, L.; Fachini, P.; Fatemi, R.; Fedorisin, J.; Feng, A.; Filip, P.; Finch, E.; Fine, V.; Fisyak, Y.; Gagliardi, Carl A.; Gaillard, L.; Gangadharan, D. R.; Ganti, M. S.; Garcia-Solis, E.; Ghazikhanian, V.; Ghosh, P.; Gorbunov, Y. N.; Gordon, A.; Grebenyuk, O.; Grosnick, D.; Grube, B.; Guertin, S. M.; Guimaraes, K. S. F. F.; Gupta, A.; Gupta, N.; Guryn, W.; Haag, B.; Hallman, T. J.; Hamed, A.; Harris, J. W.; He, W.; Heinz, M.; Heppelmann, S.; Hippolyte, B.; Hirsch, A.; Hoffman, A. M.; Hoffmann, G. W.; Hofman, D. J.; Hollis, R. S.; Huang, H. Z.; Humanic, T. J.; Igo, G.; Iordanova, A.; Jacobs, P.; Jacobs, W. W.; Jakl, P.; Jin, F.; Jones, P. G.; Joseph, J.; Judd, E. G.; Kabana, S.; Kajimoto, K.; Kang, K.; Kapitan, J.; Kaplan, M.; Keane, D.; Kechechyan, A.; Kettler, D.; Khodyrev, V. Yu; Kiryluk, J.; Kisiel, A.; Klein, S. R.; Knospe, A. G.; Kocoloski, A.; Koetke, D. D.; Kopytine, M.; Kotchenda, L.; Kouchpil, V.; Kravtsov, P.; Kravtsov, V. I.; Krueger, K.; Krus, M.; Kuhn, C.; Kumar, L.; Kurnadi, P.; Lamont, M. A. C.; Landgraf, J. M.; LaPointe, S.; Lauret, J.; Lebedev, A.; Lednicky, R.; Lee, C. -H; LeVine, M. J.; Li, C.; Li, Y.; Lin, G.; Lin, X.; Lindenbaum, S. J.; Lisa, M. A.; Liu, F.; Liu, H.; Liu, J.; Liu, L.; Ljubicic, T.; Llope, W. J.; Longacre, R. S.; Love, W. A.; Lu, Y.; Ludlam, T.; Lynn, D.; Ma, G. L.; Ma, J. G.; Ma, Y. G.; Mahapatra, D. P.; Majka, R.; Mall, M. I.; Mangotra, L. K.; Manweiler, R.; Margetis, S.; Markert, C.; Matis, H. S.; Matulenko, Yu A.; McShane, T. S.; Meschanin, A.; Millane, J.; Miller, M. L.; Minaev, N. G.; Mioduszewski, Saskia; Mischke, A.; Mitchell, J.; Mohanty, B.; Morozov, D. A.; Munhoz, M. G.; Nandi, B. K.; Nattrass, C.; Nayak, T. K.; Nelson, J. M.; Nepali, C.; Netrakanti, P. K.; Ng, M. J.; Nogach, L. V.; Nurushev, S. B.; Odyniec, G.; Ogawa, A.; Okada, H.; Okorokov, V.; Olson, D.; Pachr, M.; Page, B. S.; Pal, S. K.; Pandit, Y.; Panebratsev, Y.; Pawlak, T.; Peitzmann, T.; Perevoztchikov, V.; Perkins, C.; Peryt, W.; Phatak, S. C.; Planinic, M.; Pluta, J.; Poljak, N.; Poskanzer, A. M.; Potukuchi, B. V. K. S.; Prindle, D.; Pruneau, C.; Pruthi, N. K.; Putschke, J.; Raniwala, R.; Raniwala, S.; Ray, R. L.; Reed, R.; Ridiger, A.; Ritter, H. G.; Roberts, J. B.; Rogachevskiy, O. V.; Romero, J. L.; Rose, A.; Roy, C.; Ruan, L.; Russcher, M. J.; Rykov, V.; Sahoo, R.; Sakrejda, I.; Sakuma, T.; Salur, S.; Sandweiss, J.; Sarsour, M.; Schambach, J.; Scharenberg, R. P.; Schmitz, N.; Seger, J.; Selyuzhenkov, I.; Seyboth, P.; Shabetai, A.; Shahaliev, E.; Shao, M.; Sharma, M.; Shi, S. S.; Shi, X. -H; Sichtermann, E. P.; Simon, F.; Singaraju, R. N.; Skoby, M. J.; Smirnov, N.; Snellings, R.; Sorensen, P.; Sowinski, J.; Spinka, H. M.; Srivastava, B.; Stadnik, A.; Stanislaus, T. D. S.; Staszak, D.; Strikhanov, M.; Stringfellow, B.; Suaide, A. A. P.; Suarez, M. C.; Subba, N. L.; Sumbera, M.; Sun, X. M.; Sun, Y.; Sun, Z.; Surrow, B.; Symons, T. J. M.; de Toledo, A. Szanto; Takahashi, J.; Tang, A. H.; Tang, Z.; Tarnowsky, T.; Thein, D.; Thomas, J. H.; Tian, J.; Timmins, A. R.; Timoshenko, S.; Tlusty; Tokarev, M.; Trainor, T. A.; Tram, V. N.; Trattner, A. L.; Trentalange, S.; Tribble, Robert E.; Tsai, O. D.; Ulery, J.; Ullrich, T.; Underwood, D. G.; Van Buren, G.; van Leeuwen, M.; Vander Molen, A. M.; Vanfossen, J. A.; Varma, R., Jr.; Vasconcelos, G. M. S.; Vasilevski, I. M.; Vasiliev, A. N.; Videbaek, F.; Vigdor, S. E.; Viyogi, Y. P.; Vokal, S.; Voloshin, S. A.; Wada, M.; Waggoner, W. T.; Wang, F.; Wang, G.; Wang, J. S.; Wang, Q.

2009-01-01T23:59:59.000Z

272

Search for new phenomena in the WW??????? final state in pp collisions at ?s = 7 TeV with the ATLAS detector  

E-Print Network [OSTI]

This Letter reports a search for a heavy particle that decays to WW using events produced in pp collisions at ?s = 7 TeV. The data were recorded in 2011 by the ATLAS detector and correspond to an integrated luminosity of ...

Taylor, Frank E.

273

E-Print Network 3.0 - atlas semi conductor Sample Search Results  

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

Search Powered by Explorit Topic List Advanced Search Sample search results for: atlas semi conductor Page: << < 1 2 3 4 5 > >> 1 ATLAS & Particle Detection The ATLAS...

274

E-Print Network 3.0 - atlas point-1 system Sample Search Results  

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

Atlas: Tutorial on "Search the Atlas" Last Updated: 210611 - 1 - Guide on using... the Integrated Search of the Research Atlas This document describes how to use ... Source:...

275

Atlas-Based Hippocampus Segmentation In Alzheimer's Disease and Mild  

E-Print Network [OSTI]

Atlas-Based Hippocampus Segmentation In Alzheimer's Disease and Mild Cognitive Impairment Owen T of Chen to align the images to the Harvard atlas, MNI atlas, and randomly-selected, manually state, registration method, choice of atlas, and man- ual tracing protocol on the agreement between

276

Atlas-Based Prostate Segmentation Using an Hybrid Registration  

E-Print Network [OSTI]

Atlas-Based Prostate Segmentation Using an Hybrid Registration S´ebastien Martin (1) Vincent Daanen on the registration of an anatomical atlas computed from a population of 18 MRI exams onto a patient im- age-matching algorithm is used for both atlas building and atlas registration. Results: The method has been validated

Boyer, Edmond

277

ATLAS Upgrade Week 1 November 10, 2010  

E-Print Network [OSTI]

VCSEL/PIN Irradiation Study radiation hardness of VCSEL/PIN arrays since 2006: vendors: AOC arrays (2010): see next slides AOC 10 Gb/s VCSEL (2010): see next slides #12;K.K. Gan ATLAS Upgrade/cm2: 76% consistent with NIEL hypothesis #12;K.K. Gan ATLAS Upgrade Week 9 Irradiation of AOC

Gan, K. K.

278

NREL North American Solar Radiation Atlas (Presentation)  

SciTech Connect (OSTI)

This presentation is about NREL's North American Solar Radiation Atlas, which currently includes 48 states (Alaska and Hawaii to be added in the future). It discusses the goals of the Atlas which are to: deliver basic solar performance estimates to general users, deliver a wide variety of additional information to more advanced users, be easy to use, full featured, and extensible.

George, R; Gray-Hann, P.

2001-04-01T23:59:59.000Z

279

What is "Relativistic Canonical Quantization"?  

E-Print Network [OSTI]

The purpose of this review is to give the most popular description of the scheme of quantization of relativistic fields that was named relativistic canonical quantization (RCQ). I do not give here the full exact account of this scheme. But with the help of this review any physicist, even not a specialist in the relativistic quantum theory, will be able to get a general view of the content of RCQ, of its connection with other known approaches, of its novelty and of its fruitfulness.

D. A. Arbatsky

2005-03-11T23:59:59.000Z

280

Some problems in relativistic thermodynamics  

SciTech Connect (OSTI)

The relativistic equations of state for ideal and real gases, as well as for various interface regions, have been derived. These dependences help to eliminate some controversies in the relativistic thermodynamics based on the special theory of relativity. It is shown, in particular, that the temperature of system whose velocity tends to the velocity of light in vacuum varies in accordance with the Ott law T = T{sub 0}/{radical}1 - v{sup 2}/c{sup 2}. Relativistic dependences for heat and mass transfer, for Ohm's law, and for a viscous flow of a liquid have also been derived.

Veitsman, E. V. [Research and Production Enterprise Tekhnolazer (Russian Federation)], E-mail: ev-veitsman@mail.ru

2007-11-15T23:59:59.000Z

Note: This page contains sample records for the topic "atlas relativistic heavy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Revisiting spherically symmetric relativistic hydrodynamics  

E-Print Network [OSTI]

In this paper we revise two classical examples of Relativistic Hydrodynamics in order to illustrate in detail the numerical methods commonly used in fluid dynamics, specifically those designed to deal with shocks, which are based on a finite volume approximation. The two cases we consider are the relativistic blast wave problem and the evolution of a Tolman-Oppenheimer-Volkoff star model, in spherical symmetry. In the first case we illustrate the implementation of relativistic Euler's equations on a fixed background space-time, whereas in the second case we also show how to couple the evolution of the fluid to the evolution of the space-time.

F. S. Guzman; F. D. Lora-Clavijo; M. D. Morales

2012-12-06T23:59:59.000Z

282

European Wind Atlas: Offshore | Open Energy Information  

Open Energy Info (EERE)

European Wind Atlas: Offshore European Wind Atlas: Offshore Jump to: navigation, search Tool Summary LAUNCH TOOL Name: European Wind Atlas: Offshore Focus Area: Renewable Energy Topics: Potentials & Scenarios Website: www.windatlas.dk/Europe/oceanmap.html Equivalent URI: cleanenergysolutions.org/content/european-wind-atlas-offshore,http://c Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance This is a European offshore wind resources over open sea map developed by Riso National Laboratory in 1989. The map shows the so-called generalised wind climate over Europe, also sometimes referred to as the regional wind climate or simply the wind atlas. In such a map, the influences of local topography have been removed and only the variations on the large scale are

283

European Wind Atlas: Onshore | Open Energy Information  

Open Energy Info (EERE)

European Wind Atlas: Onshore European Wind Atlas: Onshore Jump to: navigation, search Tool Summary LAUNCH TOOL Name: European Wind Atlas: Onshore Focus Area: Renewable Energy Topics: Potentials & Scenarios Website: www.windatlas.dk/Europe/landmap.html Equivalent URI: cleanenergysolutions.org/content/european-wind-atlas-onshore,http://cl Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance This is a European on-shore wind resources at 50 meters of altitude map, developed by Riso National Laboratory in 1989. The map shows the so-called generalised wind climate over Europe, also sometimes referred to as the regional wind climate or simply the wind atlas. In such a map, the influences of local topography have been removed and only the variations on

284

Biofuels Atlas (United States) | Open Energy Information  

Open Energy Info (EERE)

Biofuels Atlas (United States) Biofuels Atlas (United States) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Biofuels Atlas (United States) Focus Area: Clean Transportation Topics: Potentials & Scenarios Website: maps.nrel.gov/biomass Equivalent URI: cleanenergysolutions.org/content/biofuels-atlas-united-states,http://c Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance Biofuels Atlas is an interactive map that allows users to compare biomass feedstocks and biofuels by location. Users may select from and apply biomass data layers to a map as well as query and download biofuels and feedstock data. The state zoom function summarizes state energy use and infrastructure for traditional and bioenergy power, fuels, and resources. The tool also calculates the biofuels potential for a given area.

285

TransAtlas | Open Energy Information  

Open Energy Info (EERE)

TransAtlas TransAtlas Jump to: navigation, search Tool Summary Name: TransAtlas Agency/Company /Organization: National Renewable Energy Laboratory Sector: Energy Focus Area: Fuels & Efficiency, Transportation Phase: Determine Baseline, Evaluate Options, Develop Goals, Prepare a Plan, Evaluate Effectiveness and Revise as Needed Topics: Analysis Tools Resource Type: Dataset, Maps User Interface: Website Website: maps.nrel.gov/transatlas Cost: Free OpenEI Keyword(s): Energy Efficiency and Renewable Energy (EERE) Tools References: National Renewable Energy Laboratory Advanced Vehicles and Fuels Research: Data and Resources[1] Logo: TransAtlas TransAtlas is an interactive map with data sets related to transportation and alternative fuels in the United States How to Use This Tool

286

Renewable Energy Atlas of the United States  

SciTech Connect (OSTI)

The Renewable Energy Atlas (Atlas) of the United States is a compilation of geospatial data focused on renewable energy resources, federal land ownership, and base map reference information. This report explains how to add the Atlas to your computer and install the associated software. The report also includes: ? A description of each of the components of the Atlas; ? Lists of the Geographic Information System (GIS) database content and sources; and ? A brief introduction to the major renewable energy technologies. The Atlas includes the following: ? A GIS database organized as a set of Environmental Systems Research Institute (ESRI) ArcGIS Personal GeoDatabases, and ? ESRI ArcReader and ArcGIS project files providing an interactive map visualization and analysis interface.

Kuiper, J. [Environmental Science Division] [Environmental Science Division; Hlava, K. [Environmental Science Division] [Environmental Science Division; Greenwood, H. [Environmentall Science Division] [Environmentall Science Division; Carr, A. [Environmental Science Division] [Environmental Science Division

2013-12-13T23:59:59.000Z

287

ATLAS SCT L1 Trigger Latency Budget Specification V1.00 15-Oct-1999 ATLAS Specification  

E-Print Network [OSTI]

Page 1 ATLAS SCT L1 Trigger Latency Budget Specification V1.00 15-Oct-1999 ATLAS Specification Name: ATLAS SCT L1 Trigger Latency Budget Version: 1.00 Revision History Revision Change Description, Pages-Oct-1999 #12;Page 2 ATLAS SCT L1 Trigger Latency Budget Specification V1.00 15-Oct-1999 Table

California at Santa Cruz, University of

288

Atlas SCT/Pixel Grounding and Shielding Note 1 ATLAS SCT/Pixel Grounding and Shielding Note  

E-Print Network [OSTI]

Atlas SCT/Pixel Grounding and Shielding Note 1 ATLAS SCT/Pixel Grounding and Shielding Note for SCT. This proposal mostly connects existing mechanical and electrical conductive #12;Atlas SCT. The barrel outer heat shield (150 µm aluminum) is the main element of the shield. #12;Atlas SCT

California at Santa Cruz, University of

289

Desulfurization of heavy oil  

Science Journals Connector (OSTI)

Strategies for heavy oil desulfurization were evaluated by reviewing desulfurization literature and critically assessing the viability of the various methods for heavy oil. The desulfurization methods includin...

Rashad Javadli; Arno de Klerk

2012-03-01T23:59:59.000Z

290

Bulk viscosity in heavy ion collision  

E-Print Network [OSTI]

The effect of a temperature dependent bulk viscosity to entropy density ratio~($\\zeta/s$) along with a constant shear viscosity to entropy density ratio~($\\eta/s$) on the space time evolution of the fluid produced in high energy heavy ion collisions have been studied in a relativistic viscous hydrodynamics model. The boost invariant Israel-Stewart theory of causal relativistic viscous hydrodynamics is used to simulate the evolution of the fluid in 2 spatial and 1 temporal dimension. The dissipative correction to the freezeout distribution for bulk viscosity is calculated using Grad's fourteen moment method. From our simulation we show that the method is applicable only for $\\zeta/s<0.004$.

Victor Roy; A. K. Chaudhuri

2012-01-20T23:59:59.000Z

291

Different convection models in ATLAS  

E-Print Network [OSTI]

Convection is an important phenomenon in the atmospheres of A-type and cooler stars. A description of convection in ATLAS models is presented, together with details of how it is specified in model calculations. The effects of changing the treatment of convection on model structures and how this affects observable quantities are discussed. The role of microturbulence is examined, and its link to velocity fields within the atmosphere. Far from being free parameters, mixing-length and microturbulence should be constrained in model calculations.

Barry Smalley

2005-09-19T23:59:59.000Z

292

Sarma phase in relativistic and non-relativistic systems  

E-Print Network [OSTI]

We investigate the stability of the Sarma phase in two-component fermion systems in three spatial dimensions. For this purpose we compare strongly-correlated systems with either relativistic or non-relativistic dispersion relation: relativistic quarks and mesons at finite isospin density and spin-imbalanced ultracold Fermi gases. Using a Functional Renormalization Group approach, we resolve fluctuation effects onto the corresponding phase diagrams beyond the mean-field approximation. We find that fluctuations induce a second order phase transition at zero temperature, and thus a Sarma phase, in the relativistic setup for large isospin chemical potential. This motivates the investigation of the cold atoms setup with comparable mean-field phase structure, where the Sarma phase could then be realized in experiment. However, for the non-relativistic system we find the stability region of the Sarma phase to be smaller than the one predicted from mean-field theory. It is limited to the BEC side of the phase diagram, and the unitary Fermi gas does not support a Sarma phase at zero temperature. Finally, we propose an ultracold quantum gas with four fermion species that has a good chance to realize a zero-temperature Sarma phase.

I. Boettcher; T. K. Herbst; J. M. Pawlowski; N. Strodthoff; L. von Smekal; C. Wetterich

2015-01-23T23:59:59.000Z

293

Heavy quark production from jet conversions in a quark-gluon plasma  

SciTech Connect (OSTI)

Recently, it has been demonstrated that the chemical composition of jets in heavy ion collisions is significantly altered compared to the jets in the vacuum. This signal can be used to probe the medium formed in nuclear collisions. In this study we investigate the possibility that fast light quarks and gluons can convert to heavy quarks when passing through a quark-gluon plasma. We study the rate of light to heavy jet conversions in a consistent Fokker-Planck framework and investigate their impact on the production of high-p{sub T} charm and bottom quarks at the Relativistic Heavy Ion Collider and the Large Hadron Collider.

Liu, W. [Cyclotron Institute and Physics Department, Texas A and M University, College Station, Texas 77843-3366 (United States); Fries, R. J. [Cyclotron Institute and Physics Department, Texas A and M University, College Station, Texas 77843-3366 (United States); RIKEN/BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973 (United States)

2008-09-15T23:59:59.000Z

294

Non abelian hydrodynamics and heavy ion collisions  

SciTech Connect (OSTI)

The goal of the relativistic heavy ion collisions (RHIC) program is to create a state of matter where color degrees of freedom are deconfined. The dynamics of matter in this state, in spite of the complexities of quantum chromodynamics, is largely determined by the conservation laws of energy momentum and color currents. Therefore it is possible to describe its main features in hydrodynamic terms, the very short color neutralization time notwithstanding. In this lecture we shall give a simple derivation of the hydrodynamics of a color charged fluid, by generalizing the usual derivation of hydrodynamics from kinetic theory to the non abelian case.

Calzetta, E. [Departamento de Fsica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and IFIBA, CONICET, Ciudad Universitaria, Buenos Aires 1428 (Argentina)

2014-01-14T23:59:59.000Z

295

Heavy metal biosensor  

DOE Patents [OSTI]

Compositions and methods are provided for detection of certain heavy metals using bacterial whole cell biosensors.

Hillson, Nathan J; Shapiro, Lucille; Hu, Ping; Andersen, Gary L

2014-04-15T23:59:59.000Z

296

European Wind Atlas: France | Open Energy Information  

Open Energy Info (EERE)

European Wind Atlas: France European Wind Atlas: France Jump to: navigation, search Tool Summary LAUNCH TOOL Name: European Wind Atlas: France Focus Area: Renewable Energy Topics: Potentials & Scenarios Website: 130.226.17.201/extra/web_docs/windmaps/france.jpg Equivalent URI: cleanenergysolutions.org/content/european-wind-atlas-france,http://cle Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance This wind resource map shows resources at 50 meters above ground level for four different topographic conditions, including sheltered terrain, open plain, coastal and hills and ridges. The greatest resources appear to be near the Mediterranean Sea coast, and the second greatest resources are near the English Channel and northern Atlantic coast.

297

Atlas Material Testing Solutions | Open Energy Information  

Open Energy Info (EERE)

Atlas Material Testing Solutions Atlas Material Testing Solutions Jump to: navigation, search Name Atlas Material Testing Solutions Place Chicago, IL Zip 60613 Website http://atlas-mts.com/ Coordinates 41.9529209°, -87.6605791° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.9529209,"lon":-87.6605791,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

298

ATLAS upgrade June09_v3  

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

ATLAS efficiency and intensity upgrade ATLAS efficiency and intensity upgrade Guy Savard and Robert V. F. Janssens June 12, 2009 The ATLAS facility is on a constant quest to improve and increase the capabilities it offers to its Users. ATLAS currently provides beams of essentially all stable isotopes at energies in the vicinity of the Coulomb barrier. These can be used in conjunction with a suite of state-of-the-art instruments such as Gammasphere, the Fragment Mass Analyzer (FMA), the Canadian Penning Trap mass spectrometer (CPT), the split-pole spectrograph, an in-flight radioactive beam line, and the recently commissioned HELIOS spectrometer. At present, these capabilities are being augmented by (1) the addition of the CARIBU upgrade, which will provide low-intensity, neutron-rich radioactive beams from Californium fission fragments in both low-energy and re-

299

Brookhaven and ATLAS | Brookhaven and the LHC  

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

Brookhaven and ATLAS Brookhaven and ATLAS BNL scientists install cathode strip chambers BNL scientists install cathode strip chambers - designed and built at the Laboratory - and monitored drift tubes into the ATLAS small wheel. Image credit: CERN. Brookhaven physicists and engineers are participating in one of the most ambitious scientific projects in the world - constructing, operating, doing physics analysis of the data, and upgrading a machine the size of a seven-story building that will open up new frontiers in the human pursuit of knowledge about elementary particles and their interactions. The machine, dubbed ATLAS, is one of four facilities located at the LHC near Geneva, in Switzerland. The LHC consists of two circular vacuum pipes in which protons travel in opposite directions and collide at nearly the

300

ATLAS Calorimeter | Brookhaven and the LHC  

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

ATLAS Calorimeter ATLAS Calorimeter liquid argon calorimeter Brookhaven physicist Denis Damazio controls the front end crate of the barrel liquid argon calorimeter in ATLAS with his laptop. The ATLAS calorimeter measures the energies of charged and neutral particles. It consists of metal plates (absorbers) and sensing elements. Interactions in the absorbers transform the energy into a "shower" of particles that are detected by the sensing elements. In the inner sections of the calorimeter, the sensing element is liquid argon. This piece of the detector, called the liquid argon calorimeter, consists of radial layers of accordion-shaped lead plates separated by thin layers of liquid argon and electrodes. The accordion geometry has the advantage of reducing the time needed for the signals to reach the

Note: This page contains sample records for the topic "atlas relativistic heavy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Exploiting Virtualization and Cloud Computing in ATLAS  

E-Print Network [OSTI]

The ATLAS Computing Model was designed around the concept of grid computing; since the start of data-taking, this model has proven very successful in the federated operation of more than one hundred Worldwide LHC Computing Grid (WLCG) sites for offline data distribution, storage, processing and analysis. However, new paradigms in computing, namely virtualization and cloud computing, present improved strategies for managing and provisioning IT resources that could allow ATLAS to more flexibly adapt and scale its storage and processing workloads on varied underlying resources. In particular, ATLAS is developing a "grid-of-clouds" infrastructure in order to utilize WLCG sites that make resources available via a cloud API. This work will present the current status of the Virtualization and Cloud Computing R&D project in ATLAS Distributed Computing. First, strategies for deploying PanDA queues on cloud sites will be discussed, including the introduction of a "cloud factory" for managing cloud VM instances. Nex...

Barreiro Megino, FH; The ATLAS collaboration; De, K; Gable, I; Hendrix, V; Panitkin, S; Paterson, M; De Silva, A; van der Ster, D; Taylor, R; Vitillo, RA; Walker, R

2012-01-01T23:59:59.000Z

302

ATLAS_Strategic_Plan_09_v5  

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

in light of existing budget constraints. Strategic Plan Mission: The mission for the ATLAS facility at Argonne is to enable research of the highest quality by its users and...

303

Top quark production at ATLAS and CMS  

E-Print Network [OSTI]

A review of the main recent results on top quark production from the ATLAS and CMS experiments is presented. Results on both electroweak single top quark production and strong top pair production are presented.

Luca Lista; on behalf of the ATLAS; CMS collaborations

2014-05-20T23:59:59.000Z

304

Study of electromagnetic dissociation of heavy nuclei at the relativistic heavy ion collider  

E-Print Network [OSTI]

. Finally the ZDCs should be able to withstand a radiation dose of 10s rad. , which is the expected exposure during several years of RHIC operation. Polymethyl-methacrylate (PMMA) is not a particularly radiation tolerant plastic. It is known to lose... material (PMMA plastic). In order to rnaxinuze effectiveness of light collection by fibers whole sandwich-like con- struction is tilted at 45 angle. The ZDCs are segmented longitudmally into the three modules, each 2 nuclear lengths thick...

Makeev, Andrei

2001-01-01T23:59:59.000Z

305

Early B-physics at ATLAS  

E-Print Network [OSTI]

The B-physics program at the ATLAS experiment, which covers the mid-rapidity region, complements that at the dedicated LHCb experiment, which covers the forward rapidity region. At the early stage of the LHC operation, the program concentrated on understanding of detector performance and measurements of quarkonia and D mesons. This article presents recent results of the B-physics program at ATLAS.

S. Oda; on behalf of the ATLAS Collaboration

2010-10-18T23:59:59.000Z

306

Heavy-Quarkonia in the Star Experiment  

E-Print Network [OSTI]

Heavy Quarkonium states modifications in relativistic heavy ion collisions have been of great interest since the proposal by Matsui and Satz of J/psi suppression as a signature of Quark-Gluon Plasma (QGP) formation. Recent studies suggest that the excited states chi_c, psi(2S) and Upsilon(3S) melt sequentially[1,2] and the amount of observed suppression depends on the state and medium conditions. Therefore, this suppression pattern may be used as a probe of the medium temperature. In this work we present preliminary results on the charmonium and bottomnium measurements performed by the STAR experiment at RHIC for p+p and Cu+Cu collisions at sqrt(s_{NN})=200GeV

Mauro R. Cosentino

2007-06-27T23:59:59.000Z

307

Non-Relativistic Superstring Theories  

SciTech Connect (OSTI)

We construct a supersymmetric version of the 'critical' non-relativistic bosonic string theory [1] with its manifest global symmetry. We introduce the anticommuting bc CFT which is the super partner of the {beta}{gamma} CFT. The conformal weights of the b and c fields are both 1/2. The action of the fermionic sector can be transformed into that of the relativistic superstring theory. We explicitly quantize the theory with manifest SO(8) symmetry and find that the spectrum is similar to that of Type IIB superstring theory. There is one notable difference: the fermions are non-chiral. We further consider 'noncritical' generalizations of the supersymmetric theory using the superspace formulation. There is an infinite range of possible string theories similar to the supercritical string theories. We comment on the connection between the critical non-relativistic string theory and the lightlike Linear Dilaton theory.

Kim, Bom Soo

2007-12-14T23:59:59.000Z

308

Lattice Boltzmann equation for relativistic quantum mechanics  

Science Journals Connector (OSTI)

...V. Coveney and S. Succi Lattice Boltzmann equation for relativistic quantum...Relativistic versions of the quantum lattice Boltzmann equation are discussed. It...by a multicomponent complex lattice Boltzmann equation. Lattice Boltzmann...

2002-01-01T23:59:59.000Z

309

Relativistic mass and modern physics  

E-Print Network [OSTI]

At first sight, arguments for and against the notion of relativistic mass look like a notorious intra-Lilliputian quarrel between Big-Endians (those who broke their eggs at the larger end) and Little-Endians. However, upon closer inspection we discover that the relativistic mass notion is alien to the spirit of modern physics to a much greater extent than it seems. To demonstrate an abyss between the modern approach and archaic notions, in this paper we explore how the concept of mass is introduced in modern physics. This modern approach reveals a deep cohomological origin of mass.

Z. K. Silagadze

2014-12-15T23:59:59.000Z

310

Landau Damping in Relativistic Plasmas  

E-Print Network [OSTI]

We examine the phenomenon of Landau Damping in relativistic plasmas via a study of the relativistic Vlasov-Poisson system (rVP) on the torus for initial data sufficiently close to a spatially uniform steady state. We find that if the steady state is regular enough (essentially in a Gevrey class of degree in a specified range) and that the deviation of the initial data from this steady state is small enough in a certain norm, the evolution of the system is such that its spatial density approaches a uniform constant value sub-exponentially fast (i.e. like $\\exp(-C|t|^{\\overline{\

Brent Young

2014-10-10T23:59:59.000Z

311

Magnetic moment of relativistic fermions  

E-Print Network [OSTI]

In the paper a new class of exact localized solutions of Dirac's equation in the field of a circularly polarized electromagnetic wave and a constant magnetic field is presented. These solutions possess unusual properties and are applicable only to relativistic fermions. The problem of the magnetic resonance is considered in the framework of the classical theory of fields. It is shown that interpretation of the magnetic resonance for relativistic fermions must be changed. Numerical examples of parameters of the electromagnetic wave, constant magnetic field and the localization length scale for real measurements are presented.

Boris V. Gisin

2011-05-19T23:59:59.000Z

312

Relativistic tunneling and accelerated transmission  

E-Print Network [OSTI]

We obtain the solutions for the tunneling zone of a one-dimensional electrostatic potential in the relativistic (Dirac to Klein-Gordon) wave equation regime when the incoming wave packet exhibits the possibility of being almost totally transmitted through the potential barrier. The conditions for the occurrence of accelerated and, eventually, superluminal tunneling transmission probabilities are all quantified and the problematic superluminal interpretation originated from the study based on non-relativistic dynamics of tunneling is overcome. The treatment of the problem suggests revealing insights into condensed-matter experiments using electrostatic barriers in single- and bi-layer graphene, for which the accelerated tunneling effect deserves a more careful investigation.

Alex E. Bernardini

2007-06-26T23:59:59.000Z

313

K/pi Fluctuations at Relativistic Energies  

SciTech Connect (OSTI)

We report results for K/{pi} fluctuations from Au+Au collisions at {radical}sNN = 19.6, 62.4, 130, and 200 GeV using the STAR detector at the Relativistic Heavy Ion Collider. Our results for K/{pi} fluctuations in central collisions show little dependence on the incident energies studied and are on the same order as results observed by NA49 at the Super Proton Synchrotron in central Pb+Pb collisions at {radical}sNN = 12.3 and 17.3 GeV. We also report results for the collision centrality dependence of K/{pi} fluctuations as well as results for K{sup +}/{pi}{sup +}, K{sup -}/{pi}{sup -}, K{sup +}/{pi}{sup -}, and K{sup -}/{pi}{sup +} fluctuations. We observe that the K/{pi} fluctuations scale with the multiplicity density, dN/d{eta}, rather than the number of participating nucleons.

STAR Collaboration; Abelev, B.I.

2009-08-24T23:59:59.000Z

314

Report on CLAS12 Software Workshop Broad view of the state-of-the-art in  

E-Print Network [OSTI]

, RHIC and Atlas Computing Facility Relativistic Heavy-Ion Collider (RHIC). Formation of quark Ernst, Director, RHIC and Atlas Computing Facility Data Formats CLAS Collaboration Meeting, June 17 Michael Ernst, Director, RHIC and Atlas Computing Facility Parallel processing. Done with athenaMP. Single

Gilfoyle, Jerry

315

A Positive-Energy Relativistic Wave Equation  

Science Journals Connector (OSTI)

...research-article A Positive-Energy Relativistic Wave Equation P. A. M...positive and negative energies. A new relativistic wave equation for particles...positive values for the energy. There is great formal...usual relativistic wave equation for the electron...

1971-01-01T23:59:59.000Z

316

NOAA Atlas NESDIS 72 WORLD OCEAN DATABASE 2013  

E-Print Network [OSTI]

NOAA Atlas NESDIS 72 WORLD OCEAN DATABASE 2013 Timothy P. Boyer, John I. Antonov, Olga K. Baranova, World Ocean Database 2013. Sydney Levitus, Ed.; Alexey Mishonov, Technical Ed.; NOAA Atlas NESDIS 72........................................................................................................... 14 1.1.1. History

317

(ATLAS Muon TDC version 1 & 2) User's Manual  

E-Print Network [OSTI]

1 AMT-1 & 2 (ATLAS Muon TDC version 1 & 2) User's Manual Yasuo Arai KEK, National High Energy Accelerator Research Organization 1-1 Oho, Tsukuba, Ibaraki 305, Japan yasuo.arai@kek.jp, http://atlas

van Suijlekom, Walter

318

Top quark pair cross section prospects in ATLAS  

E-Print Network [OSTI]

The observation of the top quark will be an important milestone in ATLAS. This talk reviews methods that ATLAS plans to use to observe the top quark pair production process and measure its cross section.

Andrei Gaponenko; for the ATLAS Collaboration

2009-10-20T23:59:59.000Z

319

LHC Results on Charmonium in Heavy Ions  

E-Print Network [OSTI]

In heavy-ion collisions at high energies, the quantum chromodynamics (QCD) predicts the production of the deconfined quark-gluon plasma (QGP) state. Quarkonia ($c\\bar{c}$ or $b\\bar{b}$ bound states) are a useful means to probe QGP and to investigate the behavior of QCD under the high parton-density environment. Up to now, the large hadron collider (LHC) at CERN provided two runs for PbPb collisions at $\\sqrt{s_{NN}}$ = 2.76 TeV in the years 2010 and 2011. The ALICE, ATLAS, and CMS experiments at LHC have analyzed the yields and spectra of the $J/\\psi$ and $\\Upsilon$ families. In this article, we review particularly the recent charmonium results in PbPb collisions at LHC from the 2010 run.

Byungsik Hong; on behalf of the ALICE; ATLAS; CMS collaborations

2012-08-08T23:59:59.000Z

320

Fully relativistic description of magnetic Compton profiles with an application to UFe2  

Science Journals Connector (OSTI)

The magnetic Compton profile of UFe2 has been calculated using the spin-polarized relativistic Korringa-Kohn-Rostoker band-structure method. For this purpose a corresponding fully relativistic scheme to determine the magnetic Compton profile has been developed. This approach accounts for magnetism as well as all relativistic effects on the same footing, as it is indispensable when dealing with the electronic structure of magnetic compounds containing heavy elements. Results obtained for the magnetic Compton profile of UFe2 are found in good agreement with experimental data of Lawsonet al. An analysis of the component-resolved contributions to the magnetic Compton profile shows that there is no strict one-to-one relation to the corresponding spin moments. In addition an appreciable site-site interference contribution is found.

D. Benea, S. Mankovsky, and H. Ebert

2006-03-14T23:59:59.000Z

Note: This page contains sample records for the topic "atlas relativistic heavy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Prospects for BSM searches at the high-luminosity LHC with the ATLAS detector  

E-Print Network [OSTI]

Discovering new physics beyond the Standard Model is a primary goal of research at the LHC. Recent searches by ATLAS and CMS, using data taken at a centre-of-mass energy of 8 TeV, have already probed a considerable fraction of the parameter space for a wide variety of models. The discovery reach is expected to be considerably extended at higher energy. The high-luminosity phase of upgraded LHC will provide datasets with a total integrated luminosity of about 3 ab-1, allowing ATLAS to probe new physics well beyond the reach of the first 0.3 ab-1 of 14 TeV running. In this talk, the prospects of ATLAS searches for new heavy bosons, dark matter candidates, inclusive strong production of squarks and gluinos, direct production of 3rd generation squarks and weak production of electro-weakinos at the 14 TeV LHC are presented. The results make use of parametrisations of the expected performance of the LHC for the first 0.3 ab-1 of 14 TeV running and for the high-luminosity phase.

Ruehr, F; The ATLAS collaboration

2014-01-01T23:59:59.000Z

322

Heavy-ion collisions at the LHC  

Science Journals Connector (OSTI)

Abstract A new era in the study of high-energy nuclear collisions began when the CERN Large Hadron Collider (LHC) provided the first collisions of lead nuclei in late 2010. In the first three years of operation the ALICE, ATLAS and CMS experiments each collected PbPbdata samples of more than 50 ? b ? 1 at s NN = 2.76 TeV , exceeding the previously studied collision energies by more than an order of magnitude. These data have provided new insights into the properties of QCD matter under extreme conditions, with extensive measurements of soft particle production and newly accessible hard probes of the hot and dense medium. In this review, we provide a comprehensive overview of the results obtained in heavy-ion collisions at the LHC so far, with particular emphasis on the complementary nature of the observations by the three experiments. In particular, the combination of ALICEs strengths at hadron identification, the strengths of ATLAS and CMS to make precise measurements of high p T probes, and the resourceful measurements of collective flow by all of the experiments have provided a rich and diverse dataset in only a few years. While the basic paradigm established at RHIC that of a hot, dense medium that flows with a viscosity to shear-entropy ratio near the predicted lower bound, and which degrades the energy of probes, such as jets, heavy-flavours and J / ? is confirmed at the LHC, the new data suggest many new avenues for extracting its properties in detail.

G. Roland; K. afa?k; P. Steinberg

2014-01-01T23:59:59.000Z

323

A relativistic constituent quark model  

SciTech Connect (OSTI)

We investigate the predictive power of a relativistic quark model formulated on the light-front. The nucleon electromagnetic form factors, the semileptonic weak decays of the hyperons and the magnetic moments of both baryon octet and decuplet are calculated and found to be in excellent agreement with experiment.

Schlumpf, F.

1993-08-01T23:59:59.000Z

324

Kinetic equilibrium and relativistic thermodynamics  

E-Print Network [OSTI]

Relativistic thermodynamics is treated from the point of view of kinetic theory. It is shown that the generalized J\\"uttner distribution suggested in [1] is compatible with kinetic equilibrium. The requirement of compatibility of kinetic and thermodynamic equilibrium reveals several generalizations of the Gibbs relation where the velocity field is an independent thermodynamic variable.

P. Vn

2011-02-01T23:59:59.000Z

325

ATLAS ATLAS ATLAS ATLAS  

E-Print Network [OSTI]

Silicon lid v­groove for fibre alignment 45 0 cut for light reflection passive alignment features ffl Silicon carrier cut outs for silicon tiles passive alignment features ffl Silicon tiles alignment marks encouragement, modifications ffl produce a few working packages in­house in the next few weeks ffl investigate

Gan, K. K.

326

Atlas Muon MDT Readout 06 December 2000 Thei Wijnen 1  

E-Print Network [OSTI]

Atlas Muon MDT Readout 06 December 2000 Thei Wijnen 1 "Slow controls" of MROD · System overview/Strobe Separator S 1 18 CSM 18 x TDC #18 #12;Atlas Muon MDT Readout 06 December 2000 Thei Wijnen 2 06 December 2000-bus" Network #12;Atlas Muon MDT Readout 06 December 2000 Thei Wijnen 3 06 December 2000 T. Wijnen 5 Memory

van Suijlekom, Walter

327

Towards Describing Crouzon Syndrome via a Craniofacial Atlas  

E-Print Network [OSTI]

Towards Describing Crouzon Syndrome via a Craniofacial Atlas Hildur ´Olafsd´ottir1 , Tron Darvann1) mouse atlas. Secondly, the estimation of deformation fields from the atlas to all subjects using imaging facility at the University of Utah. Images of the skull were obtained at approximately 46µm ? 46µm

328

ATLAS: A NOVEL KINEMATIC ARCHITECTURE FOR SIX DOF MOTION PLATFORMS  

E-Print Network [OSTI]

ATLAS: A NOVEL KINEMATIC ARCHITECTURE FOR SIX DOF MOTION PLATFORMS M.J.D. HAYES Mechanical simulation required in many applications. This paper presents an overview of the Atlas platform: a novel six orienting device, called the Atlas sphere, on a gantry with three linear axes. The key to the design

Hayes, John

329

ATLAS Muon TGC Trigger Electronics TTC signal distribution Extended URD  

E-Print Network [OSTI]

ATLAS Muon TGC Trigger Electronics TTC signal distribution Extended URD Version 0 June 2000 1 a TTCrx chip which receives signals distributed by the ATLAS central TTC system. The SPP then extracts to the LVDS level, and #12;ATLAS Muon TGC Trigger Electronics TTC signal distribution Extended URD Version 0

Fukunaga, Chikara

330

Atlas: A Novel Kinematic Architecture for Six DOF Motion Platforms  

E-Print Network [OSTI]

Atlas: A Novel Kinematic Architecture for Six DOF Motion Platforms M.J.D. HAYES, R.G. LANGLOIS. This paper presents an overview of the Atlas platform: a novel six DOF motion platform architecture of the mechanism. The decoupling is accomplished by fixing a three DOF spherical orienting device, called the Atlas

Hayes, John

331

ATLAS Muon TGC Trigger Electronics Slave Board ASIC Extended URD  

E-Print Network [OSTI]

ATLAS Muon TGC Trigger Electronics Slave Board ASIC Extended URD Version 0 June 2000 1 Slave Board position of a MATRIX while one from the pivot plane specifies one of the raw. Thus the #12;ATLAS Muon TGC at the highest r is selected from each section giving three hits per an SB chip for the wire triplet. #12;ATLAS

Fukunaga, Chikara

332

Fast Lattice Boltzmann Solver for Relativistic Hydrodynamics  

SciTech Connect (OSTI)

A lattice Boltzmann formulation for relativistic fluids is presented and numerically validated through quantitative comparison with recent hydrodynamic simulations of relativistic fluids. In order to illustrate its capability to handle complex geometries, the scheme is also applied to the case of a three-dimensional relativistic shock wave, generated by a supernova explosion, impacting on a massive interstellar cloud. This formulation opens up the possibility of exporting the proven advantages of lattice Boltzmann methods, namely, computational efficiency and easy handling of complex geometries, to the context of (mildly) relativistic fluid dynamics at large, from quark-gluon plasmas up to supernovae with relativistic outflows.

Mendoza, M.; Herrmann, H. J. [ETH Zuerich, Computational Physics for Engineering Materials, Institute for Building Materials, Schafmattstrasse 6, HIF, CH-8093 Zuerich (Switzerland); Boghosian, B. M. [Department of Mathematics, Tufts University, Bromfield-Pearson, Medford, Massachusetts 02155 (United States); Succi, S. [Istituto per le Applicazioni del Calcolo C.N.R., Via dei Taurini, 19 00185, Rome (Italy) and Freiburg Institute for Advanced Studies, Albertstrasse, 19, D-79104, Freiburg (Germany)

2010-07-02T23:59:59.000Z

333

Decomposition of Harmonic and Jet Contributions to Particle-pair Correlations at Ultra-relativistic Energies  

E-Print Network [OSTI]

Methodology is presented for analysis of two-particle azimuthal angle correlation functions obtained in collisions at ultra-relativistic energies. We show that harmonic and di-jet contributions to these correlation functions can be reliably decomposed by two techniques to give an accurate measurement of the jet-pair distribution. Results from detailed Monte Carlo simulations are used to demonstrate the efficacy of these techniques in the study of possible modifications to jet topologies in heavy ion reactions.

N. N. Ajitanand; J. M. Alexander; P. Chung; W. G. Holzmann; M. Issah; Roy A. Lacey; A. Shevel; A. Taranenko; P. Danielewicz

2005-01-25T23:59:59.000Z

334

River Hydrokinetic Resource Atlas | Open Energy Information  

Open Energy Info (EERE)

River Hydrokinetic Resource Atlas River Hydrokinetic Resource Atlas Jump to: navigation, search Tool Summary LAUNCH TOOL Name: River Hydrokinetic Resource Atlas Agency/Company /Organization: National Renewable Energy Laboratory Sector: Energy Focus Area: Water Power Resource Type: Maps, Software/modeling tools User Interface: Website Website: maps.nrel.gov/river_atlas Country: United States Web Application Link: maps.nrel.gov/river_atlas Cost: Free UN Region: Northern America Coordinates: 39.7412019515°, -105.172290802° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.7412019515,"lon":-105.172290802,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

335

ATLAS Cloud Computing R&D project  

E-Print Network [OSTI]

The computing model of the ATLAS experiment was designed around the concept of grid computing and, since the start of data taking, this model has proven very successful. However, new cloud computing technologies bring attractive features to improve the operations and elasticity of scientific distributed computing. ATLAS sees grid and cloud computing as complementary technologies that will coexist at different levels of resource abstraction, and two years ago created an R&D working group to investigate the different integration scenarios. The ATLAS Cloud Computing R&D has been able to demonstrate the feasibility of offloading work from grid to cloud sites and, as of today, is able to integrate transparently various cloud resources into the PanDA workload management system. The ATLAS Cloud Computing R&D is operating various PanDA queues on private and public resources and has provided several hundred thousand CPU days to the experiment. As a result, the ATLAS Cloud Computing R&D group has gained...

Panitkin, S; The ATLAS collaboration; Caballero Bejar, J; Benjamin, D; DiGirolamo, A; Gable, I; Hendrix, V; Hover, J; Kucharczuk, K; Medrano LLamas, R; Ohman, H; Paterson, M; Sobie, R; Taylor, R; Walker, R; Zaytsev, A

2013-01-01T23:59:59.000Z

336

Renewable energy atlas of the United States.  

SciTech Connect (OSTI)

The Renewable Energy Atlas (Atlas) of the United States is a compilation of geospatial data focused on renewable energy resources, federal land ownership, and base map reference information. It is designed for the U.S. Department of Agriculture Forest Service (USFS) and other federal land management agencies to evaluate existing and proposed renewable energy projects. Much of the content of the Atlas was compiled at Argonne National Laboratory (Argonne) to support recent and current energy-related Environmental Impact Statements and studies, including the following projects: (1) West-wide Energy Corridor Programmatic Environmental Impact Statement (PEIS) (BLM 2008); (2) Draft PEIS for Solar Energy Development in Six Southwestern States (DOE/BLM 2010); (3) Supplement to the Draft PEIS for Solar Energy Development in Six Southwestern States (DOE/BLM 2011); (4) Upper Great Plains Wind Energy PEIS (WAPA/USFWS 2012, in progress); and (5) Energy Transport Corridors: The Potential Role of Federal Lands in States Identified by the Energy Policy Act of 2005, Section 368(b) (in progress). This report explains how to add the Atlas to your computer and install the associated software; describes each of the components of the Atlas; lists the Geographic Information System (GIS) database content and sources; and provides a brief introduction to the major renewable energy technologies.

Kuiper, J.A.; Hlava, K.Greenwood, H.; Carr, A. (Environmental Science Division)

2012-05-01T23:59:59.000Z

337

Exploiting heavy oil reserves  

E-Print Network [OSTI]

North Sea investment potential Exploiting heavy oil reserves Beneath the waves in 3D Aberdeen the potential of heavy oil 8/9 Taking the legal lessons learned in the north Sea to a global audience 10 potential Exploiting heavy oil reserves Aberdeen: A community of science AT WORK FOR THE ENERGY SECTOR ISSUE

Levi, Ran

338

Atlas Solar Innovations | Open Energy Information  

Open Energy Info (EERE)

Solar Innovations Solar Innovations Jump to: navigation, search Logo: Atlas Solar Innovations Name Atlas Solar Innovations Address 2640 NW 15th Court Place Pompano Beach, Florida Zip 33069 Sector Solar Product Solar Photovoltaics Year founded 1984 Phone number 1-877-299-SOLAR Website http://www.atlas-solar.com/ Coordinates 26.24691°, -80.158567° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":26.24691,"lon":-80.158567,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

339

Highlights from SUSY searches with ATLAS  

E-Print Network [OSTI]

Supersymmetry (SUSY) is one of the most relevant scenarios of new physics searched by the ATLAS experiment at the CERN Large Hadron Collider. In this writeup the principal search strategies employed by ATLAS are outlined and the most recent results for analyses targeting SUSY discovery are discussed. A wide range of signatures is covered motivated by various theoretical scenarios and topologies: strong production, third-generation fermions, long-lived particles and R-parity violation, among others. The results are based on up to ~5 fb-1 of data recorded during 2010-2011 at sqrt(s) = 7 TeV centre-of-mass energy by the ATLAS experiment at the LHC.

Vasiliki A. Mitsou; for the ATLAS Collaboration

2012-10-05T23:59:59.000Z

340

ATLAS 2000 -Neue Wege zum Verstndnis klimatologischer Prozesse mit Hilfe digitaler Atlanten im Internet  

E-Print Network [OSTI]

ATLAS 2000 - Neue Wege zum Verständnis klimatologischer Prozesse mit Hilfe digitaler Atlanten im. Das ATLAS 2000 - Konzept ATLAS 2000 ist eine Pilotstudie, in der Daten, Verfahren zur Simulation von Fragestellungen in ATLAS 2000 dienen. Mit dieser Studie werden vier Hauptziele verfolgt: · ATLAS 2000 ist wie ein

Reiterer, Harald

Note: This page contains sample records for the topic "atlas relativistic heavy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

ATLAS II: Optimizing a 10Gbps SingleChip ATM Switch Dionisios Pnevmatikatos and George Kornaros  

E-Print Network [OSTI]

ATLAS II: Optimizing a 10Gbps Single­Chip ATM Switch Dionisios Pnevmatikatos and George Kornaros, Heraklio, Crete, GR­711­10 GREECE fpnevmati,kornarosg@ics.forth.gr Abstract We describe ATLAS II, an optimized version of the ATLAS I ATM switch. While in ATLAS I we concentrated on cor­ rectness, in ATLAS II

Markatos, Evangelos P.

342

Alternative Size and Lifetime Measurements for High-Energy Heavy-Ion Collisions  

E-Print Network [OSTI]

Two-Particle correlations based on the interference of identical particles has provided the chief means for determining the shape and lifetime of sources in relativistic heavy ion collisions. Here, Strong and Coulomb induced correlations are shown to provide equivalent information.

Scott Pratt; Silvio Petriconi

2003-06-16T23:59:59.000Z

343

Fully relativistic lattice Boltzmann algorithm  

SciTech Connect (OSTI)

Starting from the Maxwell-Juettner equilibrium distribution, we develop a relativistic lattice Boltzmann (LB) algorithm capable of handling ultrarelativistic systems with flat, but expanding, spacetimes. The algorithm is validated through simulations of a quark-gluon plasma, yielding excellent agreement with hydrodynamic simulations. The present scheme opens the possibility of transferring the recognized computational advantages of lattice kinetic theory to the context of both weakly and ultrarelativistic systems.

Romatschke, P. [Frankfurt Institute for Advanced Studies, D-60438 Frankfurt (Germany); Mendoza, M. [ETH Zuerich, Computational Physics for Engineering Materials, Institute for Building Materials, Schafmattstrasse 6, HIF, CH-8093 Zuerich (Switzerland); Succi, S. [Istituto per le Applicazioni del Calcolo C.N.R., Via dei Taurini, 19 I-00185, Rome (Italy); Freiburg Institute for Advanced Studies, Albertstrasse, 19, D-79104, Freiburg (Germany)

2011-09-15T23:59:59.000Z

344

Relativistic tunneling through opaque barriers  

Science Journals Connector (OSTI)

We propose an analytical study of relativistic tunneling through opaque barriers. We obtain a closed formula for the phase time. This formula is in excellent agreement with the numerical simulations and corrects the standard formula obtained by the stationary phase method. An important result is found when the upper limit of the incoming energy distribution coincides with the upper limit of the tunneling zone. In this case, the phase time is proportional to the barrier width.

Stefano De Leo and Vincius Leonardi

2011-02-28T23:59:59.000Z

345

ATLAS Tile Calorimeter Electronics and Future Upgrade  

E-Print Network [OSTI]

The Tile Calorimeter (TileCal) of the ATLAS experiment is the hadronic calorimeter designed for energy reconstruction of hadrons, jets, tau-particles and missing transverse energy. An overview of the on-detector and off-detector TileCal electronics used for ATLAS data taking is given. Upgrade plans for TileCal electronics for the High Luminosity LHC programme in 2024 are discussed, together with R&D activities at different laboratories that target different parts of the TileCal electronics. In particular, a demonstrator prototype for TileCal electronics to be installed during the long shutdown in 2014 is described.

Usai, G; The ATLAS collaboration

2014-01-01T23:59:59.000Z

346

The ATLAS level 2 trigger supervisor.  

SciTech Connect (OSTI)

This paper presents an overview of the hardware and software proposed for the ATLAS level 2 Trigger ROI Builder/Supervisor. The essential requirements of this system are that it operate at the design Level 1 Trigger rate of 100kHz and that it support the technical requirements of the architectures suggested for the ATLAS Level 2 Trigger. Commercial equipment and software support are used to the maximum extent possible, with support from dedicated hardware. Timing requirements and latencies are discussed and simulation results are presented.

Abolins, M.; Blair, R. E.; Dawson, J. W.; Owen, D.; Pope, B. G.; Schlereth, J. L.; Weber dos Santos, R.

1997-04-03T23:59:59.000Z

347

Wind Energy Resource Atlas of Armenia  

SciTech Connect (OSTI)

This wind energy resource atlas identifies the wind characteristics and distribution of the wind resource in the country of Armenia. The detailed wind resource maps and other information contained in the atlas facilitate the identification of prospective areas for use of wind energy technologies for utility-scale power generation and off-grid wind energy applications. The maps portray the wind resource with high-resolution (1-km2) grids of wind power density at 50-m above ground. The wind maps were created at the National Renewable Energy Laboratory (NREL) using a computerized wind mapping system that uses Geographic Information System (GIS) software.

Elliott, D.; Schwartz, M.; Scott, G.; Haymes, S.; Heimiller, D.; George, R.

2003-07-01T23:59:59.000Z

348

Dynamical Evolution, Hadronization and Angular De-correlation of Heavy Flavor in a Hot and Dense QCD Medium  

E-Print Network [OSTI]

We study heavy flavor evolution and hadronization in relativistic heavy-ion collisions. The in-medium evolution of heavy quarks is described using our modified Langevin framework that incorporates both collisional and radiative energy loss mechanisms. The subsequent hadronization process for heavy quarks is calculated with a fragmentation plus recombination model. We find significant contribution from gluon radiation to heavy quark energy loss at high $p_T$; the recombination mechanism can greatly enhance D meson production at medium $p_T$. Our calculation provides a good description of D meson nuclear modification at the LHC. In addition, we explore the angular correlation functions of heavy flavor pairs which may provide us a potential candidate for distinguishing different energy loss mechanisms of heavy quarks inside QGP.

Shanshan Cao; Guang-You Qin; Steffen A Bass

2014-04-03T23:59:59.000Z

349

BioPower Atlas and BioFuels Atlas | Open Energy Information  

Open Energy Info (EERE)

BioPower Atlas and BioFuels Atlas BioPower Atlas and BioFuels Atlas Jump to: navigation, search Tool Summary LAUNCH TOOL Name: BioPower Atlas and BioFuels Atlas Agency/Company /Organization: National Renewable Energy Laboratory Sector: Energy Focus Area: Biomass Topics: Resource assessment Resource Type: Dataset, Maps, Software/modeling tools User Interface: Website Website: maps.nrel.gov/bioenergyatlas Country: United States Web Application Link: maps.nrel.gov/biomass Cost: Free UN Region: Northern America Coordinates: 37.09024°, -95.712891° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.09024,"lon":-95.712891,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

350

Simple Cosmological Model with Relativistic Gas  

E-Print Network [OSTI]

We construct simple and useful approximation for the relativistic gas of massive particles. The equation of state is given by an elementary function and admits analytic solution of the Friedmann equation, including more complex cases when the relativistic gas of massive particles is considered together with radiation or with dominating cosmological constant. The model of relativistic gas may be interesting for the description of primordial Universe, especially as a candidate for the role of a Dark Matter.

Guilherme de Berredo-Peixoto; Ilya L. Shapiro; Flavia Sobreira

2005-06-16T23:59:59.000Z

351

Entropy Production in Relativistic Jet Boundary Layers  

E-Print Network [OSTI]

Hot relativistic jets, passing through a background medium with a pressure gradient p \\propto r^{-\\eta} where 2 gamma-ray bursts from ...

Kohler, Susanna

2014-01-01T23:59:59.000Z

352

Dissipation in relativistic pair-plasma reconnection  

SciTech Connect (OSTI)

An investigation into the relativistic dissipation in magnetic reconnection is presented. The investigated system consists of an electron-positron plasma. A relativistic generalization of Ohm's law is derived. A set of numerical simulations is analyzed, composed of runs with and without guide magnetic field, and of runs with different species temperatures. The calculations indicate that the thermal inertia-based dissipation process survives in relativistic plasmas. For antiparallel reconnection, it is found that the pressure tensor divergence remains the sole contributor to the reconnection electric field, whereas relativistic guide field reconnection exhibits a similarly important role of the bulk inertia terms.

Hesse, Michael; Zenitani, Seiji [NASA Goddard Space Flight Center, Greenbelt, Maryland 20771 (United States)

2007-11-15T23:59:59.000Z

353

The Education and Outreach Project of ATLAS - A New Participant in Physics Education  

E-Print Network [OSTI]

cameras situated in the ATLAS cavern show the status of theunderground to the ATLAS cavern to see the status of thethe entrance to the ATLAS cavern. Participation of teachers

Barnett, R. Michael; Johansson, K. Erik

2008-01-01T23:59:59.000Z

354

E-Print Network 3.0 - atlas combined testbeam Sample Search Results  

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

35 ATLAS Internal Note INDETNo123 Summary: These measurements were made at the ATLAS test-beam facility located in the H8 area at the CERN SPS, and were part... 1 ATLAS...

355

A relativistic mean field study of multi-strange system  

E-Print Network [OSTI]

We study the binding energies, radii, single-particle energies, spin-orbit potential and density profile for multi-strange hypernuclei in the range of light mass to superheavy region within the relativistic mean field (RMF) theory. The stability of multi-strange hypernuclei as a function of introduced hyperons ($\\Lambda$ and $\\Sigma$) is investigated. The neutron, lambda and sigma mean potentials are presented for light to superheavy hypernuclei. The inclusion of hyperons affects the nucleon, lambda and sigma spin-orbit potentials significantly. The bubble structure of nuclei and corresponding hypernuclei is studied. The nucleon and lambda halo structure are also investigated. A large class of bound multi-strange systems formed from the combination of nucleons and hyperons (n, p, $\\Lambda$, $\\Sigma^+$ and n, p, $\\Lambda$, $\\Sigma^-$) is suggested in the region of superheavy hypernuclei which might be stable against the strong decay. These multi-strange systems might be produced in heavy-ion reactions.

Ikram, M; Usmani, A A; Patra, S K

2014-01-01T23:59:59.000Z

356

A relativistic mean field study of multi-strange system  

E-Print Network [OSTI]

We study the binding energies, radii, single-particle energies, spin-orbit potential and density profile for multi-strange hypernuclei in the range of light mass to superheavy region within the relativistic mean field (RMF) theory. The stability of multi-strange hypernuclei as a function of introduced hyperons ($\\Lambda$ and $\\Sigma$) is investigated. The neutron, lambda and sigma mean potentials are presented for light to superheavy hypernuclei. The inclusion of hyperons affects the nucleon, lambda and sigma spin-orbit potentials significantly. The bubble structure of nuclei and corresponding hypernuclei is studied. The nucleon and lambda halo structure are also investigated. A large class of bound multi-strange systems formed from the combination of nucleons and hyperons (n, p, $\\Lambda$, $\\Sigma^+$ and n, p, $\\Lambda$, $\\Sigma^-$) is suggested in the region of superheavy hypernuclei which might be stable against the strong decay. These multi-strange systems might be produced in heavy-ion reactions.

M. Ikram; S. K. Singh; A. A. Usmani; S. K. Patra

2014-06-18T23:59:59.000Z

357

Particle production and nonlinear diffusion in relativistic systems  

E-Print Network [OSTI]

The short parton production phase in high-energy heavy-ion collisions is treated analytically as a nonlinear diffusion process. The initial buildup of the rapidity density distributions of produced charged hadrons within tau_p = 0.25 fm/c occurs in three sources during the colored partonic phase. In a two-step approach, the subsequent diffusion in pseudorapidity space during the interaction time of tau_int = 7-10 fm/c (mean duration of the collision) is essentially linear as expressed in the Relativistic Diffusion Model (RDM) which yields excellent agreement with the data at RHIC energies, and allows for predictions at LHC energies. Results for d+Au are discussed in detail.

Georg Wolschin

2008-09-06T23:59:59.000Z

358

The ATLAS level-1 trigger timing setup  

Science Journals Connector (OSTI)

The ATLAS detector at CERN's LHC will be exposed to proton-proton collisions at a bunch-crossing rate of 40 MHz. In order to reduce the data rate, a three-level trigger system selects potentially interesting physics processes. The first trigger level ...

P. Borrego Amaral; N. Ellis; P. Farthouat; P. Gallno; J. Haller; A. Krasznahorkay; T. Maeno; T. Pauly; H. Pessoa Lima, Jr.; I. Resurreccion Arcas; G. Schuler; J. M. De Seixas; R. Spiwoks; R. Torga Teixeira; T. Wengler

2005-06-01T23:59:59.000Z

359

A Tool for creating online Anatomical Atlases  

E-Print Network [OSTI]

on one particular data set, which limits the application domain. "The Whole Brain Atlas Navigator" [1 computed tomography (CT) and magnetic resonance imaging (MRI). This allows for a lot flexibility and a wide Wuensche #12;2 Abstract: Many researchers in medical and biological sciences produce 3D data sets

Goodman, James R.

360

HEAVY-DUTYDIEGRINDERS EXTRAROBUSTERECTIFIEUSESPOURMATRICES  

E-Print Network [OSTI]

HEAVY-DUTYDIEGRINDERS EXTRAROBUSTERECTIFIEUSESPOURMATRICES HEAVYDUTYRECTIFICADORDEMATRICES OPERATOR tool. Keep cord away from heat, oil, sharp edges, or moving parts. Damaged or entangled cords increase

Kleinfeld, David

Note: This page contains sample records for the topic "atlas relativistic heavy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Bioconversion of Heavy oil.  

E-Print Network [OSTI]

??70 % of world?s oil reservoirs consist of heavy oil, and as the supply of conventional oil decreases, researchers are searching for new technologies to (more)

Steinbakk, Sandra

2011-01-01T23:59:59.000Z

362

Relativistic approach to electromagnetic imaging  

E-Print Network [OSTI]

A novel imaging principle based on the interaction of electromagnetic waves with a beam of relativistic electrons is proposed. Wave-particle interaction is assumed to take place in a small spatial domain, so that each electron is only briefly accelerated by the incident field. In the one-dimensional case the spatial distribution of the source density can be directly observed in the temporal spectrum of the scattered field. Whereas, in the two-dimensional case the relation between the source and the spectrum is shown to be approximately the Radon transform.

Budko, N

2004-01-01T23:59:59.000Z

363

Relativistic approach to electromagnetic imaging  

E-Print Network [OSTI]

A novel imaging principle based on the interaction of electromagnetic waves with a beam of relativistic electrons is proposed. Wave-particle interaction is assumed to take place in a small spatial domain, so that each electron is only briefly accelerated by the incident field. In the one-dimensional case the spatial distribution of the source density can be directly observed in the temporal spectrum of the scattered field. Whereas, in the two-dimensional case the relation between the source and the spectrum is shown to be approximately the Radon transform.

Neil Budko

2004-03-11T23:59:59.000Z

364

Relativistic atomic beam spectroscopy II  

SciTech Connect (OSTI)

The negative ion of H is one of the simplest 3-body atomic systems. The techniques we have developed for experimental study of atoms moving near speed of light have been productive. This proposal request continuing support for experimental studies of the H{sup -} system, principally at the 800 MeV linear accelerator (LAMPF) at Los Alamos. Four experiments are currently planned: photodetachment of H{sup -} near threshold in electric field, interaction of relativistic H{sup -} ions with matter, high excitations and double charge escape in H{sup -}, and multiphoton detachment of electrons from H{sup -}.

NONE

1989-12-31T23:59:59.000Z

365

E-Print Network 3.0 - atlas construction site Sample Search Results  

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

institutt, Universitetet i Oslo Collection: Biology and Medicine 14 WIND ATLAS FOR EGYPT: MEASUREMENTS, MICRO-AND MESOSCALE MODELLING Summary: WIND ATLAS FOR EGYPT:...

366

E-Print Network 3.0 - atlas tile calorimeter Sample Search Results  

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

Experimental High Energy Physics Collection: Plasma Physics and Fusion ; Physics 11 LASER Monitoring system for the ATLAS Tile Calorimeter , for the LPC ATLAS group Summary:...

367

E-Print Network 3.0 - atlas trigger design Sample Search Results  

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

First Result of Global Commissioning of the ATALS Endcap Muon Trigger System in ATLAS Cavern Summary: commissioning. REFERENCES 1 ATLAS First Level Trigger Technical Design Re-...

368

E-Print Network 3.0 - atlas level1 endcap Sample Search Results  

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

First Result of Global Commissioning of the ATALS Endcap Muon Trigger System in ATLAS Cavern Summary: . INTRODUCTION In the ATLAS detector system, Thin Gap Chamber (TGC) is used...

369

E-Print Network 3.0 - atlas endcap calorimeters Sample Search...  

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

Particle Beam Test Results Summary: with the move of the barrel cryostat to the ATLAS cavern. Since then, integration of the endcap calorimeters... The ATLAS Liquid Argon...

370

E-Print Network 3.0 - atlas high-level muon Sample Search Results  

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

Pontecorvo, Installation and Commissioning of the ATLAS MUON... recorded in the ATLAS cavern with two muon ... Source: Ecole Polytechnique, Centre de mathmatiques Collection:...

371

E-Print Network 3.0 - atlas level-1 muctpi Sample Search Results  

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

First Result of Global Commissioning of the ATALS Endcap Muon Trigger System in ATLAS Cavern Summary: . INTRODUCTION In the ATLAS detector system, Thin Gap Chamber (TGC) is used...

372

E-Print Network 3.0 - atlas control room Sample Search Results  

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

Experience of Enhancing the Space Sensing of Networked Robots Using Atlas Service... -oriented architecture provided by University of Florida's Atlas Platform. Based on our...

373

E-Print Network 3.0 - atlas level-1 muon Sample Search Results  

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

ATLAS... of the Third Level Muon Trigger of the ATLAS Experiment at LHC S. Armstrong, K. A. Assamagan, J. T. M. Baines... - ground environment ... Source: Ecole...

374

E-Print Network 3.0 - atlas offline software Sample Search Results  

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

Environment in ATLAS: From the Level-2 Trigger to the Offline Reconstruction S. Armstrong, J. T... in the ATLAS offline reconstruction framework. While this approach provides...

375

E-Print Network 3.0 - atlas identifies distinct Sample Search...  

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

(ATLAS) is the widest deep radio... galactic nu- clei (AGN) and star-formation (SF) in ATLAS, with the goal of comparing discriminants Source: Norris, Ray - Australia Telescope...

376

E-Print Network 3.0 - atlas semiconductor tracker Sample Search...  

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

Search Powered by Explorit Topic List Advanced Search Sample search results for: atlas semiconductor tracker Page: << < 1 2 3 4 5 > >> 1 ATLAS Tracker Upgrade: Silicon Strip...

377

E-Print Network 3.0 - atlas electromagnetic calorimeter Sample...  

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

Search Powered by Explorit Topic List Advanced Search Sample search results for: atlas electromagnetic calorimeter Page: << < 1 2 3 4 5 > >> 1 The ATLAS Liquid Argon...

378

E-Print Network 3.0 - atlas ddm integration Sample Search Results  

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

Astronomy, Particle Physics Experimental Group Collection: Physics 6 The ATLAS METADATA INTERFACE Solveig Albrand1 Summary: to allow ATLAS members to register datasets both in...

379

E-Print Network 3.0 - atlas fuer klinik Sample Search Results  

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

National Atlas as access to the geodata... infrastructure Problem Accessability of the GDI Existance of the National Atlas Solution: combination Alternative Source: Kraak,...

380

FOREWORD ATLAS THE UNITED S T A T E S  

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

FOREWORD FOREWORD ATLAS THE UNITED S T A T E S 2012 CARBON UTILIZATION AND STORAGE Foreword The U.S. Department of Energy's (DOE) National Energy Technology Laboratory (NETL) is proud to release the fourth edition of the United States Carbon Utilization and Storage Atlas (Atlas IV). Production of Atlas IV is the result of collaboration among carbon storage experts from local, State, and Federal agencies, as well as industry and academia. Atlas IV provides a coordinated update of carbon capture, utilization, and storage (CCUS) potential across the United States and other portions of North America. The primary purpose of Atlas IV is to update the carbon dioxide (CO 2 ) storage potential for the United States and to provide updated information on the Regional Carbon Sequestration Partnerships' (RCSPs) field

Note: This page contains sample records for the topic "atlas relativistic heavy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Wind Resource Atlas of Oaxaca | Open Energy Information  

Open Energy Info (EERE)

Resource Atlas of Oaxaca Resource Atlas of Oaxaca Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Wind Resource Atlas of Oaxaca Focus Area: Renewable Energy Topics: Potentials & Scenarios Website: www.nrel.gov/wind/pdfs/34519.pdf Equivalent URI: cleanenergysolutions.org/content/wind-resource-atlas-oaxaca,http://cle Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance This wind resource atlas identifies wind characteristics and distribution of wind resources in Oaxaca, Mexico, at a wind power density of 50 meters above ground. The detailed wind resource maps contained in the atlas facilitate the identification of prospective areas for use of wind energy technologies for utility-scale power generation, village power, and off-grid wind energy applications. The wind maps were created using a

382

ATLAS DE LAS AVES EN INVIERNO Servicio de Vida Silvestre  

E-Print Network [OSTI]

ATLAS DE LAS AVES EN INVIERNO EN ESPA?A Servicio de Vida Silvestre Subdirección General de Medio? INTRODUCCI?N Gracias a los elevados niveles de organización y calidad técnica alcanzados, los atlas dos atlas editados por Purroy (1997) y Martí y Del Moral (2003), que durante la última década se han

Carrascal, Luis M.

383

Relativistic Boltzmann transport approach with Bose-Einstein statistics and the onset of gluon condensation  

E-Print Network [OSTI]

We study the evolution of a gluon system under conditions of density and temperature similar to those explored in the early stage of ultra-relativistic heavy-ion collisions. We first describe the implementation of Relativistic Boltzmann-Nordheim (RBN) transport approach that includes in the collision integral the quantum effects of Bose-Einstein Statistics. Then, we describe the evolution of a spatially uniform gluon system in a box under elastic collisions solving the RBN for various initial conditions. We discuss the critical phase-space density that leads to the onset of a Bose-Einstein condensate (BEC) and the time scale for this process to occur. In particular, thanks to the fact that RBN allows to relax the small angle approximation, we study the effect at both small and large screening mass $ m_{D} $. For small $ m_{D}\\ll T $ we see that our solution of RBN is in agreement with the recent extensive studies within a Fokker-Planck scheme in small angle approximation. For the same total cross section but with large $ m_{D}\\simeq 2\\, T $ (large angle scatterings), we see a significant time speed-up of the onset of BEC respect to small $m_{D}\\ll T$. This further strengthen the possibility that at least a transient BEC is formed in the early stage of ultra-relativistic heavy-ion collisions.

F. Scardina; D. Perricone; S. Plumari; M. Ruggieri; V. Greco

2014-08-06T23:59:59.000Z

384

Ontario Renewable Energy Atlas (Canada) | Open Energy Information  

Open Energy Info (EERE)

Page Page Edit with form History Facebook icon Twitter icon » Ontario Renewable Energy Atlas (Canada) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Ontario Renewable Energy Atlas (Canada) Focus Area: Renewable Energy Topics: Potentials & Scenarios Website: www.lio.ontario.ca/imf-ows/imf.jsp?site=renew_en Equivalent URI: cleanenergysolutions.org/content/ontario-renewable-energy-atlas-canada Language: English Policies: Deployment Programs DeploymentPrograms: Demonstration & Implementation The Renewable Energy Atlas is an interactive tool designed for everyone interested in renewable energy, including government policy makers, decision makers in the renewable energy industry, and educational and community institutions who wish to learn more about renewable energy in the

385

Top quark charge asymmetry measurements with ATLAS detector  

E-Print Network [OSTI]

The top quark charge asymmetry measurements performed with ATLAS detector at a centre-of-mass energy of 7 TeV are presented.

U. De Sanctis; for the ATLAS Collaboration

2014-11-13T23:59:59.000Z

386

Top quark charge asymmetry measurements with ATLAS detector  

E-Print Network [OSTI]

The top quark charge asymmetry measurements performed with ATLAS detector at a centre-of-mass energy of 7 TeV are presented.

De Sanctis, Umberto; The ATLAS collaboration

2014-01-01T23:59:59.000Z

387

Relativistic Nuclear Energy Density Functionals: adjusting parameters to binding energies  

E-Print Network [OSTI]

We study a particular class of relativistic nuclear energy density functionals in which only nucleon degrees of freedom are explicitly used in the construction of effective interaction terms. Short-distance (high-momentum) correlations, as well as intermediate and long-range dynamics, are encoded in the medium (nucleon density) dependence of the strength functionals of an effective interaction Lagrangian. Guided by the density dependence of microscopic nucleon self-energies in nuclear matter, a phenomenological ansatz for the density-dependent coupling functionals is accurately determined in self-consistent mean-field calculations of binding energies of a large set of axially deformed nuclei. The relationship between the nuclear matter volume, surface and symmetry energies, and the corresponding predictions for nuclear masses is analyzed in detail. The resulting best-fit parametrization of the nuclear energy density functional is further tested in calculations of properties of spherical and deformed medium-heavy and heavy nuclei, including binding energies, charge radii, deformation parameters, neutron skin thickness, and excitation energies of giant multipole resonances.

T. Niksic; D. Vretenar; P. Ring

2008-09-08T23:59:59.000Z

388

Wind Energy Resource Atlas of Armenia  

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

Elliott, M. Schwartz, G. Scott, S. Haymes, D. Heimiller, R. George Elliott, M. Schwartz, G. Scott, S. Haymes, D. Heimiller, R. George National Renewable Energy Laboratory Wind Energy Resource Atlas of Armenia July 2003 * NREL/TP-500-33544 Wind Energy Resource Atlas of Armenia D. Elliott M. Schwartz G. Scott S. Haymes, D. Heimiller R. George Prepared under Task No. WF7C0202 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial

389

CONSTRUCTING A WISE HIGH RESOLUTION GALAXY ATLAS  

SciTech Connect (OSTI)

After eight months of continuous observations, the Wide-field Infrared Survey Explorer (WISE) mapped the entire sky at 3.4 {mu}m, 4.6 {mu}m, 12 {mu}m, and 22 {mu}m. We have begun a dedicated WISE High Resolution Galaxy Atlas project to fully characterize large, nearby galaxies and produce a legacy image atlas and source catalog. Here we summarize the deconvolution techniques used to significantly improve the spatial resolution of WISE imaging, specifically designed to study the internal anatomy of nearby galaxies. As a case study, we present results for the galaxy NGC 1566, comparing the WISE enhanced-resolution image processing to that of Spitzer, Galaxy Evolution Explorer, and ground-based imaging. This is the first paper in a two-part series; results for a larger sample of nearby galaxies are presented in the second paper.

Jarrett, T. H.; Masci, F.; Tsai, C. W.; Fowler, J. [Infrared Processing and Analysis Center (IPAC), California Institute of Technology, Pasadena, CA 91125 (United States); Petty, S.; Lake, S.; Wright, E. [Physics and Astronomy Department, University of California, Los Angeles, CA 90095 (United States); Cluver, M. [Australian Astronomical Observatory, P.O. Box 296, Epping, NSW 1710 (Australia); Assef, Roberto J.; Eisenhardt, P. [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Mail Stop 169-221, Pasadena, CA 91109 (United States); Benford, D. [NASA Goddard Space Flight Center, Code 665, Greenbelt, MD 20771 (United States); Blain, A. [Department of Physics and Astronomy, University of Leicester, LE1 7RH Leicester (United Kingdom); Bridge, C.; Neill, James D. [Department of Astronomy, California Institute of Technology, Pasadena, CA 91125 (United States); Donoso, E. [Spitzer Science Center, IPAC, California Institute of Technology, Pasadena, CA 91125 (United States); Koribalski, B. [CSIRO Astronomy and Space Science, Australia Telescope National Facility (ATNF), P.O. Box 76, Epping, NSW 1710 (Australia); Seibert, M. [Observatories of the Carnegie Insititution for Science, 813 Santa Barbara Street, Pasadena, CA 91101 (United States); Sheth, K. [NASA Postdoctoral Program Fellow. (United States); Stanford, S., E-mail: jarrett@ipac.caltech.edu [Department of Physics, University of California, One Shields Avenue, Davis, CA 95616 (United States)

2012-08-15T23:59:59.000Z

390

Muon Identification at ATLAS and CMS  

E-Print Network [OSTI]

Muonic final states will provide clean signatures formany physics processes at the LHC. The two LHC experiments ATLAS and CMS will be able to identify muons with a high reconstruction efficiency above 96% and a high transverse momentum resolution better than 2% for transverse momenta below 400 GeV/c and about 10% at 1 TeV/c. The two experiments follow complentary concepts of muon detection. ATLAS has an instrumented air-toroid mangetic system serving as a stand-alone muon spectrometer. CMS relies on high bending power and momentum resolution in the inner detector, and uses an iron yoke to increase its magnetic field. The iron yoke is instrumented with chambers used for muon identification. Therefore, muon momenta can only be reconstructed with high precision by combining inner-detector information with the data from the muon chambers.

Oliver Kortner

2007-07-06T23:59:59.000Z

391

Wind Energy Resource Atlas of Southeast China  

SciTech Connect (OSTI)

This wind energy resource atlas identifies the wind characteristics and distribution of the wind resource in two regions of southeast China. The first region is the coastal area stretching from northern Fujian south to eastern Guangdong and extending approximately 100 km inland. The second region is centered on the Poyang Lake area in northern Jiangxi. This region also includes parts of two other provinces-Anhui and Hubei-and extends from near Anqing in Anhui south to near Nanchang in Jiangxi. The detailed wind resource maps and other information contained in the atlas facilitate the identification of prospective areas for use of wind energy technologies, both for utility-scale power generation and off-grid wind energy applications. We created the high-resolution (1-km2) maps in 1998 using a computerized wind resource mapping system developed at the National Renewable Energy Laboratory (NREL). The mapping system uses software known as a Geographical Information System (GIS).

Elliott, D.; Schwartz, M.; Scott, G.; Haymes, S.; Heimiller, D.; George, R.

2002-11-01T23:59:59.000Z

392

Optical Link of the Atlas Pixel Detector  

E-Print Network [OSTI]

The on-detector optical link of the ATLAS pixel detector contains radiation-hard receiver chips to decode bi-phase marked signals received on PIN arrays and data transmitter chips to drive VCSEL arrays. The components are mounted on hybrid boards (opto-boards). We present results from the irradiation studies with 24 GeV protons up to 32 Mrad (1.2 x 10^15 p/cm^2) and the experience from the production.

K. K. Gan

2007-12-06T23:59:59.000Z

393

Searches for third generation SUSY in ATLAS  

E-Print Network [OSTI]

Recent results on searches for third generation supersymmetry carried out by the ATLAS collaboration with 2.05 fb-1 of sqrt(s) = 7 TeV pp collisions recorded with the LHC in 2011 are reported. These analyses focus on search for gluino- and squark-mediated stau production, direct scalar bottom pair production and gluino-mediated sbottom and stop pair production.

Antoine Marzin; on behalf of the ATLAS Collaboration

2012-05-17T23:59:59.000Z

394

Early Standard Model measurements with ATLAS  

E-Print Network [OSTI]

The measurement of Standard Model processes will be an important first step towards exploiting the discovery potential of the Large Hadron Collider, the highest energy accelerator ever built that will begin operation in the fall 2009. This paper presents a summary of the early physics analyses for understanding the performance of the detector as well as the Standard Model at the ATLAS experiment at 14 TeV centre of mass energy.

T. Ince; for the ATLAS collaboration

2009-05-28T23:59:59.000Z

395

Recent Higgs results from the ATLAS experiment  

SciTech Connect (OSTI)

This paper presents recent results on the Higgs boson from the ATLAS experiment at the Large Hadron Collider. The Collaboration reports on measurements of the signal strength, couplings, and spin of the Higgs in several decay channels. We find all measurements to be consistent with Standard Model predictions. The Higgs branching fraction to invisible particles is constrained and no evidence of physics beyond the Standard Model is found.

Brendlinger, Kurt [University of Pennsylvania, Department of Physics and Astronomy, 209 South 33rd Street, Philadelphia, PA 19104 (United States); Collaboration: ATLAS Collaboration

2014-06-24T23:59:59.000Z

396

Quarkonia and heavy flavors at the LHC  

E-Print Network [OSTI]

Perspectives for quarkonia and heavy flavors measurements in heavy ion collisions at LHC are reviewed

P. Crochet

2005-03-14T23:59:59.000Z

397

FleetAtlas | Open Energy Information  

Open Energy Info (EERE)

FleetAtlas FleetAtlas Jump to: navigation, search Tool Summary LAUNCH TOOL Name: FleetAtlas Agency/Company /Organization: National Renewable Energy Laboratory Sector: Energy Focus Area: Transportation Resource Type: Software/modeling tools User Interface: Website Website: maps.nrel.gov/fleetatlas Country: United States Web Application Link: maps.nrel.gov/fleetatlas Cost: Free OpenEI Keyword(s): Energy Efficiency and Renewable Energy (EERE) Tools UN Region: Northern America Coordinates: 39.7405574°, -105.1719904° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.7405574,"lon":-105.1719904,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

398

ATLAS Upgrade Instrumentation in the US  

E-Print Network [OSTI]

Planned upgrades of the LHC over the next decade should allow the machine to operate at a center of mass energy of 14 TeV with instantaneous luminosities in the range 5--7e34 cm^-2 s^-1. With these parameters, ATLAS could collect 3,000 fb^-1 of data in approximately 10 years. However, the conditions under which this data would be acquired are much harsher than those currently encountered at the LHC. For example, the number of proton-proton interactions per bunch crossing will rise from the level of 20--30 per 50 ns crossing observed in 2012 to 140--200 every 25 ns. In order to deepen our understanding of the newly discovered Higgs boson and to extend our searches for physics beyond that new particle, the ATLAS detector, trigger, and readout will have to undergo significant upgrades. In this whitepaper we describe R&D necessary for ATLAS to continue to run effectively at the highest luminosities foreseen from the LHC. Emphasis is placed on those R&D efforts in which US institutions are playing a leading role.

Gustaaf Brooijmans; Hal Evans; Abe Seiden

2013-07-22T23:59:59.000Z

399

ATLAS Upgrade Instrumentation in the US  

E-Print Network [OSTI]

Planned upgrades of the LHC over the next decade should allow the machine to operate at a center of mass energy of 14 TeV with instantaneous luminosities in the range 5--7e34 cm^-2 s^-1. With these parameters, ATLAS could collect 3,000 fb^-1 of data in approximately 10 years. However, the conditions under which this data would be acquired are much harsher than those currently encountered at the LHC. For example, the number of proton-proton interactions per bunch crossing will rise from the level of 20--30 per 50 ns crossing observed in 2012 to 140--200 every 25 ns. In order to deepen our understanding of the newly discovered Higgs boson and to extend our searches for physics beyond that new particle, the ATLAS detector, trigger, and readout will have to undergo significant upgrades. In this whitepaper we describe R&D necessary for ATLAS to continue to run effectively at the highest luminosities foreseen from the LHC. Emphasis is placed on those R&D efforts in which US institutions are playing a leadin...

Brooijmans, Gustaaf; Seiden, Abe

2013-01-01T23:59:59.000Z

400

Detonation waves in relativistic hydrodynamics  

Science Journals Connector (OSTI)

This paper is concerned with an algebraic study of the equations of detonation waves in relativistic hydrodynamics taking into account the pressure and the energy of thermal radiation. A new approach to shock and detonation wavefronts is outlined. The fluid under consideration is assumed to be perfect (nonviscous and nonconducting) and to obey the following equation of state: p=(?-1)? where p, ?, and ? are the pressure, the total energy density, and the adiabatic index, respectively. The solutions of the equations of detonation waves are reduced to the problem of finding physically acceptable roots of a quadratic polynomial ?(X) where X is the ratio ?/?0 of dynamical volumes behind and ahead of the detonation wave. The existence and the locations of zeros of this polynomial allow it to be shown that if the equation of state of the burnt fluid is known then the variables characterizing the unburnt fluid obey well-defined physical relations.

Mahdy Cissoko

1992-02-15T23:59:59.000Z

Note: This page contains sample records for the topic "atlas relativistic heavy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Atlas-based analysis of cardiac shape and function: correction of regional shape bias due to imaging protocol for population studies  

E-Print Network [OSTI]

Unbiased diffeomorphic atlas construction for computationalaverage age-appropriate atlases for pediatric studies.MI, Van Zijl P, Albert M. Atlas-based whole brain white

2013-01-01T23:59:59.000Z

402

Thermodynamic Laws and Equipartition Theorem in Relativistic Brownian Motion  

E-Print Network [OSTI]

We extend the stochastic energetics to a relativistic system. The thermodynamic laws and equipartition theorem are discussed for a relativistic Brownian particle and the first and the second law of thermodynamics in this formalism are derived. The relation between the relativistic equipartition relation and the rate of heat transfer is discussed in the relativistic case together with the nature of the noise term.

T. Koide; T. Kodama

2011-02-16T23:59:59.000Z

403

Non-relativistic Josephson Junction from Holography  

E-Print Network [OSTI]

We construct a Josephson junction in non-relativistic case with a Lifshitz geometry as the dual gravity. We investigate the effect of the Lifshitz scaling in comparison with its relativistic counterpart. The standard sinusoidal relation between the current and the phase difference is found for various Lifshitz scalings characterised by the dynamical critical exponent. We also find the exponential decreasing relation between the condensate of the scalar operator within the barrier at zero current and the width of the weak link, as well as the relation between the critical current and the width. Nevertheless, the coherence lengths obtained from two exponential decreasing relations generically have discrepancies for non-relativistic dual.

Huai-Fan Li; Li Li; Yong-Qiang Wang; Hai-Qing Zhang

2014-12-09T23:59:59.000Z

404

Non-relativistic Josephson Junction from Holography  

E-Print Network [OSTI]

We construct a Josephson junction in non-relativistic case with a Lifshitz geometry as the dual gravity. We investigate the effect of the Lifshitz scaling in comparison with its relativistic counterpart. The standard sinusoidal relation between the current and the phase difference is found for various Lifshitz scalings characterised by the dynamical critical exponent. We also find the exponential decreasing relation between the condensate of the scalar operator within the barrier at zero current and the width of the weak link, as well as the relation between the critical current and the width. Nevertheless, the coherence lengths obtained from two exponential decreasing relations generically have discrepancies for non-relativistic dual.

Li, Huai-Fan; Wang, Yong-Qiang; Zhang, Hai-Qing

2014-01-01T23:59:59.000Z

405

E-Print Network 3.0 - atlas muon chambers Sample Search Results  

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

chambers Search Powered by Explorit Topic List Advanced Search Sample search results for: atlas muon chambers...

406

E-Print Network 3.0 - atlas muon chamber Sample Search Results  

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

chamber Search Powered by Explorit Topic List Advanced Search Sample search results for: atlas muon chamber...

407

Joint ATLAS/CMS SLHC Opto WG 1 K.K. Gan Lesson Learned from  

E-Print Network [OSTI]

Joint ATLAS/CMS SLHC Opto WG 1 K.K. Gan Lesson Learned from ATLAS Pixel Optical Link #12;Joint ATLAS/CMS SLHC Opto WG 2 Outline Introduction VCSEL/PIN monitoring Analysis of opto-board/VCSEL/PIN failures Summary K.K. Gan #12;K.K. Gan Joint ATLAS/CMS SLHC Opto WG 3 Introduction Architecture

Gan, K. K.

408

ATLAS Binary Readout IC (ABC) Specification V5.01 21Jul1999 Project Specification  

E-Print Network [OSTI]

ATLAS Binary Readout IC (ABC) Specification V5.01 21­Jul­1999 Project Specification Project Name: ATLAS ATLAS Binary Readout IC (ABC) Specification V5.01 21­Jul­1999 Table of Contents 1. SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.1. ATLAS BINARY FRONT END READOUT ARCHITECTURE

California at Santa Cruz, University of

409

ATLAS Post-doctoral Research Associate Position in Experimental High Energy Physics  

E-Print Network [OSTI]

ATLAS Post-doctoral Research Associate Position in Experimental High Energy Physics York University to work on the ATLAS experiment at the CERN Large Hadron Collider. The York ATLAS group is collaborating electronics for the ATLAS silicon detector upgrade. The successful candidate will be expected to take

410

ATLAS Muon TGC Trigger Electronics High-pT ASIC Specification  

E-Print Network [OSTI]

ATLAS Muon TGC Trigger Electronics High-pT ASIC Specification Version 1.02 August, 2002 1 High-pT Trigger ASIC for ATLAS TGC1 Contents High-pT ASIC Technical Document 1. Introduction 2. Overview.comp.metro-u.ac.jp/~fukunaga/public_html/atlas/HipTASIC.pdf #12;ATLAS Muon TGC Trigger Electronics High

Fukunaga, Chikara

411

FIES ThAr atlas orders 157 79  

E-Print Network [OSTI]

FIES ThAr atlas orders 157 ­ 79 wavelength 3620 ­ 7260 °A Dec 2007 medium resolution file: FIql020001.fits John Telting Nordic Optical Telescope, La Palma, Spain #12;This ThAr atlas was made in Dec file used is FIql020001.fits. A halogen exposure (FIql020002.fits) was used to trace the orders

412

Atlas of Japan (East) Sea hydrographic properties in summer, 1999  

E-Print Network [OSTI]

Atlas of Japan (East) Sea hydrographic properties in summer, 1999 Lynne D. Talley a,*, Pavel properties from CTD and discrete bottle sample profiles covering the Japan (East) Sea in summer, 1999: Japan sea; Ocean chemistry; Ocean atlas; Marginal seas; Water masses 1. Introduction The Japan or East

Talley, Lynne D.

413

Process for removing heavy metal compounds from heavy crude oil  

DOE Patents [OSTI]

A process is provided for removing heavy metal compounds from heavy crude oil by mixing the heavy crude oil with tar sand; preheating the mixture to a temperature of about 650.degree. F.; heating said mixture to up to 800.degree. F.; and separating tar sand from the light oils formed during said heating. The heavy metals removed from the heavy oils can be recovered from the spent sand for other uses.

Cha, Chang Y. (Golden, CO); Boysen, John E. (Laramie, WY); Branthaver, Jan F. (Laramie, WY)

1991-01-01T23:59:59.000Z

414

Fragment Formation and Phase Transitions in Heavy Ion Collisions  

E-Print Network [OSTI]

We investigate the thermodynamical properties of nuclear matter in heavy ion collisions, in particular with respect to questions of thermodynamical instability, phase transitions and fragmentation. For this we analyze results of relativistic transport calculations of Au+Au collisons at intermediate energies, separately for spectator and participant matter. On one hand, we determine local thermodynamical variables from the analysis of the local momentum distribution; on the other, we analyze fragment energy spectra in a blast model scenario. We find that the spectator represents an instable, equilibrized fragmenting source, while in the participant no such common source can be identified. Our results compare well with experimental determinations of temperatures and flow velocities.

T. Gaitanos; H. H. Wolter; C. Fuchs

2000-03-20T23:59:59.000Z

415

Heavy Hybrid mesons Masses  

E-Print Network [OSTI]

We estimate the ground state masses of the heavy hybrid mesons using a phenomenological QCD-type potential. 0^{- -},1^{- -},0^{- +},1^{- +} and 0^{+ -} J^{PC} states are considered.

F. Iddir; L. Semlala

2006-11-13T23:59:59.000Z

416

HEAVY ION INERTIAL FUSION  

E-Print Network [OSTI]

Accelerators as Drivers for Inertially Confined Fusion, W.B.LBL-9332/SLAC-22l (1979) Fusion Driven by Heavy Ion Beams,OF CALIFORNIA f Accelerator & Fusion Research Division

Keefe, D.

2008-01-01T23:59:59.000Z

417

Canadian Wind Energy Atlas Potential Website | Open Energy Information  

Open Energy Info (EERE)

Canadian Wind Energy Atlas Potential Website Canadian Wind Energy Atlas Potential Website Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Canadian Wind Energy Atlas Potential Website Focus Area: Renewable Energy Topics: Opportunity Assessment & Screening Website: www.windatlas.ca/en/index.php Equivalent URI: cleanenergysolutions.org/content/canadian-wind-energy-atlas-potential- Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance Environment Canada's Wind Energy Atlas website aims at developing new meteorological tools to be used by Canada's wind energy industry. It offers the possibility to browse through the results of the numerical simulations that were run on all of Canada in order to determine its wind energy potential. Consultants and the general public will find valuable data about

418

Wind Energy Atlas of Brazil | Open Energy Information  

Open Energy Info (EERE)

Energy Atlas of Brazil Energy Atlas of Brazil Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Wind Energy Atlas of Brazil Focus Area: Renewable Energy Topics: Potentials & Scenarios Website: 130.226.17.201/extra/web_docs/windmaps/Brazil_wind_map.pdf Equivalent URI: cleanenergysolutions.org/content/wind-energy-atlas-brazil,http://clean Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance The maps provided in this resource result from a surface wind modelling tool called MesoMap that estimates the wind potential over the Brazilian territory by simulating the atmosphere dynamics of the wind regime and the related meteorological variables from validated atmosphere pressure-data samples. References Retrieved from "http://en.openei.org/w/index.php?title=Wind_Energy_Atlas_of_Brazil&oldid=514616

419

Microsoft PowerPoint - ATLAS_upgrade_physics_program  

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

Guy Savard Guy Savard Argonne National Laboratory and University of Chicago Science with the ATLAS Efficiency and Intensity Upgrade ATLAS Users Meeting August 8-9 2009 2 G. Savard 2009 ATLAS S&T Review May 18-19, 2009 Outline Evolving landscape for low-energy nuclear physics Self-assessment of ATLAS present and near future program Process followed to evaluate near and longer term physics program needs and role in community Option proposed - Physics - Machine - Instrumentation 3 G. Savard 2009 ATLAS S&T Review May 18-19, 2009 The new landscape: what is coming to a town near us ---- FRIB ---- At full power - Fast beams - Reaccelerated beams at a few % of that Starts operating ~ 2017-18

420

Transmission/Permitting Atlas/State Data | Open Energy Information  

Open Energy Info (EERE)

Transmission/Permitting Atlas/State Data Transmission/Permitting Atlas/State Data < Transmission‎ | Permitting Atlas Jump to: navigation, search PermittingAtlasHeader.png Roadmap Compare States General Transmission Dashboard Permitting Atlas Compare States Arizona California Colorado Idaho Montana Nevada New Mexico Oregon Utah Washington Wyoming Resource Library NEPA Database State State Siting Act State Preemptive Authority Siting/Permitting Entities Permit Processing Timeframe Arizona None If TLSC finds compliance with local land use unreasonable or unfeasible, then the TLSC may grant a certificate Arizona Corporation Commission (ACC); Transmission Line Siting Committee (TLSC) 210-240 Days California Public Utilities Code Section 1001 Local jurisdictions are preempted from regulating electric power line projects California Public Utilities Commission (CPUC) 18 months

Note: This page contains sample records for the topic "atlas relativistic heavy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Carbon Storage Atlas, Employee Newsletter Earn International Communications  

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

Storage Atlas, Employee Newsletter Earn International Storage Atlas, Employee Newsletter Earn International Communications Awards Carbon Storage Atlas, Employee Newsletter Earn International Communications Awards May 7, 2013 - 8:55am Addthis NETL's Carbon Storage Atlas IV and FE's internal employee newsletter, inTouch, earned 2013 National Association of Government Communicators awards. NETL's Carbon Storage Atlas IV and FE's internal employee newsletter, inTouch, earned 2013 National Association of Government Communicators awards. Gayland Barksdale Technical Writer, Office of Fossil Energy The Office of Fossil Energy (FE) and its National Energy Technology Laboratory (NETL) recently walked away with two prestigious 2013 Blue Pencil & Gold Screen Awards presented by the National Association of Government Communicators (NAGC).

422

LIPS-thermalization of a relativistic gas  

E-Print Network [OSTI]

It is argued that two-particle collisions of relativistic particles "at a distance", irrespective of their position in the configuration space, generate uniform distribution of particles in Lorentz invariant phase space.

Vladimr Balek

2011-01-31T23:59:59.000Z

423

Nuclear curvature energy in relativistic models  

Science Journals Connector (OSTI)

The difficulties arising in the calculation of the nuclear curvature energy are analyzed in detail, especially with reference to relativistic models. It is underlined that the implicit dependence on curvature of the quantal wave functions is directly accessible only in a semiclassical framework. It is shown that also in the relativistic models quantal and semiclassical calculations of the curvature energy are in good agreement. 1996 The American Physical Society.

M. Centelles; X. Vias; P. Schuck

1996-02-01T23:59:59.000Z

424

SPECTRAL AND INTERMITTENCY PROPERTIES OF RELATIVISTIC TURBULENCE  

SciTech Connect (OSTI)

High-resolution numerical simulations are utilized to examine isotropic turbulence in a compressible fluid when long-wavelength velocity fluctuations approach light speed. Spectral analysis reveals an inertial sub-range of relativistic motions with a broadly 5/3 index. The use of generalized Lorentz covariant structure functions based on the four-velocity is proposed. These structure functions extend the She-Leveque model for intermittency into the relativistic regime.

Zrake, Jonathan; MacFadyen, Andrew I. [Center for Cosmology and Particle Physics, Physics Department, New York University, New York, NY 10003 (United States)

2013-01-20T23:59:59.000Z

425

Charged Particle Multiplicities in Ultra-relativistic Au+Au and Cu+Cu Collisions  

E-Print Network [OSTI]

The PHOBOS collaboration has carried out a systematic study of charged particle multiplicities in Cu+Cu and Au+Au collisions at the Relativistic Heavy-Ion Collider (RHIC) at Brookhaven National Laboratory. A unique feature of the PHOBOS detector is its ability to measure charged particles over a very wide angular range from 0.5 to 179.5 deg. corresponding to |eta|<5.4. The general features of the charged particle multiplicity distributions as a function of pseudo-rapidity, collision energy and centrality, as well as system size, are discussed.

B. B. Back

2006-04-26T23:59:59.000Z

426

Five Years of Tracking Heavy Ion Collisions at RHIC  

E-Print Network [OSTI]

Five years have passed since the first collisions of Au nuclei at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory (BNL) on Long Island. With nucleon-nucleon center-of-mass energies of up to sqrt(s_NN)=200GeV RHIC provides the highest energy heavy ion collisions at any existing collider. To study the dynamics of nuclear matter at extreme temperatures and pressures hundreds of produced particles need to be tracked and identified, which provides a sizable challenge to the four experiments. This article tries to summarize these first years of RHIC operation from the detector point of view and give a glimpse at the future of the accelerator and its experiments.

A. Franz

2006-03-13T23:59:59.000Z

427

Glenn T. Seaborg and heavy ion nuclear science  

SciTech Connect (OSTI)

Radiochemistry has played a limited but important role in the study of nucleus-nucleus collisions. Many of the important radiochemical studies have taken place in Seaborg`s laboratory or in the laboratories of others who have spent time in Berkeley working with Glenn T. Seaborg. I will discuss studies of low energy deep inelastic reactions with special emphasis on charge equilibration, studies of the properties of heavy residues in intermediate energy nuclear collisions and studies of target fragmentation in relativistic and ultrarelativistic reactions. The emphasis will be on the unique information afforded by radiochemistry and the physical insight derived from radiochemical studies. Future roles of radiochemistry in heavy ion nuclear science also will be discussed.

Loveland, W. [Oregon State Univ., Corvallis, OR (United States). Dept. of Chemistry; [Lawrence Berkeley Lab., CA (United States)

1992-04-01T23:59:59.000Z

428

Glenn T. Seaborg and heavy ion nuclear science  

SciTech Connect (OSTI)

Radiochemistry has played a limited but important role in the study of nucleus-nucleus collisions. Many of the important radiochemical studies have taken place in Seaborg's laboratory or in the laboratories of others who have spent time in Berkeley working with Glenn T. Seaborg. I will discuss studies of low energy deep inelastic reactions with special emphasis on charge equilibration, studies of the properties of heavy residues in intermediate energy nuclear collisions and studies of target fragmentation in relativistic and ultrarelativistic reactions. The emphasis will be on the unique information afforded by radiochemistry and the physical insight derived from radiochemical studies. Future roles of radiochemistry in heavy ion nuclear science also will be discussed.

Loveland, W. (Oregon State Univ., Corvallis, OR (United States). Dept. of Chemistry Lawrence Berkeley Lab., CA (United States))

1992-04-01T23:59:59.000Z

429

Heavy Ion Collisions at the LHC - Last Call for Predictions  

SciTech Connect (OSTI)

In August 2006, the CERN Theory Unit announced to restructure its visitor program and to create a 'CERN Theory Institute', where 1-3 month long specific programs can take place. The first such Institute was held from 14 May to 10 June 2007, focusing on 'Heavy Ion Collisions at the LHC - Last Call for Predictions'. It brought together close to 100 scientists working on the theory of ultra-relativistic heavy ion collisions. The aim of this workshop was to review and document the status of expectations and predictions for the heavy ion program at the Large Hadron Collider LHC before its start. LHC will explore heavy ion collisions at {approx} 30 times higher center of mass energy than explored previously at the Relativistic Heavy Ion Collider RHIC. So, on the one hand, the charge of this workshop provided a natural forum for the exchange of the most recent ideas, and allowed to monitor how the understanding of heavy ion collisions has evolved in recent years with the data from RHIC, and with the preparation of the LHC experimental program. On the other hand, the workshop aimed at a documentation which helps to distinguish pre- from post-dictions. An analogous documentation of the 'Last Call for Predictions' [1] was prepared prior to the start of the heavy-ion program at the Relativistic Heavy Ion Collider RHIC, and it proved useful in the subsequent discussion and interpretation of RHIC data. The present write-up is the documentation of predictions for the LHC heavy ion program, received or presented during the CERN TH Institute. The set-up of the CERN TH Institute allowed us to aim for the wide-most coverage of predictions. There were more than 100 presentations and discussions during the workshop. Moreover, those unable to attend could still participate by submitting predictions in written form during the workshop. This followed the spirit that everybody interested in making a prediction had the right to be heard. To arrive at a concise document, we required that each prediction should be summarized on at most two pages, and that predictions should be presented, whenever possible, in figures which display measurable quantities. Full model descriptions were not accepted--the authors were encouraged to indicate the relevant references for the interested reader. Participants had the possibility to submit multiple contributions on different topics, but it was part of the subsequent editing process to ensure that predictions on neighboring topics were merged wherever possible. The contributions summarized here are organized in several sections,--though some of them contain material related with more than one section--roughly by going from low transverse momentum to high transverse momentum and from abundant to rare measurements. In the low transverse momentum regime, we start with predictions on multiplicity distributions, azimuthal asymmetries in particle production and hadronic flavor observables, followed by correlation and fluctuation measurements. The contributions on hard probes at the LHC start with predictions for single inclusive high transverse momentum spectra, and jets, followed by heavy quark and quarkonium measurements, leptonic probes and photons. A final section 'Others' encompasses those predictions which do not fall naturally within one of the above-mentioned categories, or discuss the more speculative phenomena that may be explored at the LHC.

Armesto, N; Borghini, N; Jeon, S; Wiedemann, U A; Abreu, S; Akkelin, V; Alam, J; Albacete, J L; Andronic, A; Antonuv, D; Arleo, F; Armesto, N; Arsene, I C; Barnafoldi, G G; Barrette, J; Bauchle, B; Becattini, F; Betz, B; Bleicher, M; Bluhm, M; Boer, D; Bopp, F W; Braun-Munzinger, P; Bravina, L; Busza, W; Cacciari, M; Capella, A; Casalderrey-Solana, J; Chatterjee, R; Chen, L; Cleymans, J; Cole, B A; delValle, Z C; Csernai, L P; Cunqueiro, L; Dainese, A; de Deus, J D; Ding, H; Djordjevic, M; Drescher, H; Dremin, I M; Dumitru, A; El, A; Engel, R; d'Enterria, D; Eskola, K J; Fai, G; Ferreiro, E G; Fries, R J; Frodermann, E; Fujii, H; Gale, C; Gelis, F; Goncalves, V P; Greco, V; Gyulassy, M; van Hees, H; Heinz, U; Honkanen, H; Horowitz, W A; Iancu, E; Ingelman, G; Jalilian-Marian, J; Jeon, S; Kaidalov, A B; Kampfer, B; Kang, Z; Karpenko, I A; Kestin, G; Kharzeev, D; Ko, C M; Koch, B; Kopeliovich, B; Kozlov, M; Kraus, I; Kuznetsova, I; Lee, S H; Lednicky, R; Letessier, J; Levin, E; Li, B; Lin, Z; Liu, H; Liu, W; Loizides, C; Lokhtin, I P; Machado, M T; Malinina, L V; Managadze, A M; Mangano, M L; Mannarelli, M; Manuel, C; Martinez, G; Milhano, J G; Mocsy, A; Molnar, D; Nardi, M; Nayak, J K; Niemi, H; Oeschler, H; Ollitrault, J; Paic, G; Pajares, C; Pantuev, V S; Papp, G; Peressounko, D; Petreczky, P; Petrushanko, S V; Piccinini, F; Pierog, T; Pirner, H J; Porteboeuf, S; Potashnikova, I; Qin, G Y; Qiu, J; Rafelski, J; Rajagopal, K; Ranft, J; Rapp, R; Rasanen, S S; Rathsman, J; Rau, P; Redlich, K; Renk, T; Rezaeian, A H; Rischke, D; Roesler, S; Ruppert, J; Ruuskanen, P V; Salgado, C A; Sapeta, S; Sarcevic, I; Sarkar, S; Sarycheva, L I; Schmidt, I; Shoski, A I; Sinha, B; Sinyukov, Y M; Snigirev, A M; Srivastava, D K; Stachel, J; Stasto, A; Stocker, H; Teplov, C Y; Thews, R L; Torrieri, G; Pop, V T; Triantafyllopoulos, D N; Tuchin, K L; Turbide, S; Tywoniuk, K; Utermann, A; Venugopalan, R; Vitev, I; Vogt, R; Wang, E; Wang, X N; Werner, K; Wessels, E; Wheaton, S; Wicks, S; Wiedemann, U A; Wolschin, G; Xiao, B; Xu, Z; Yasui, S; Zabrodin, E; Zapp, K; Zhang, B

2008-02-25T23:59:59.000Z

430

Observation of relativistic antihydrogen atoms  

SciTech Connect (OSTI)

An observation of relativistic antihydrogen atoms is reported in this dissertation. Experiment 862 at Fermi National Accelerator Laboratory observed antihydrogen atoms produced by the interaction of a circulating beam of high momentum (3 < p < 9 GeV/c) antiprotons and a jet of molecular hydrogen gas. Since the neutral antihydrogen does not bend in the antiproton source magnets, the detectors could be located far from the interaction point on a beamline tangent to the storage ring. The detection of the antihydrogen is accomplished by ionizing the atoms far from the interaction point. The positron is deflected by a magnetic spectrometer and detected, as are the back to back photons resulting from its annihilation. The antiproton travels a distance long enough for its momentum and time of flight to be measured accurately. A statistically significant sample of 101 antihydrogen atoms has been observed. A measurement of the cross section for {bar H}{sup 0} production is outlined within. The cross section corresponds to the process where a high momentum antiproton causes e{sup +} e{sup -} pair creation near a nucleus with the e{sup +} being captured by the antiproton. Antihydrogen is the first atom made exclusively of antimatter to be detected. The observation experiment's results are the first step towards an antihydrogen spectroscopy experiment which would measure the n = 2 Lamb shift and fine structure.

Blanford, Glenn DelFosse

1998-01-01T23:59:59.000Z

431

Chapter 1 - Refining Heavy Oil and Extra-heavy Oil  

Science Journals Connector (OSTI)

The definitions of heavy oil, extra-heavy oil, and tar sand bitumen are inadequate insofar as the definitions rely upon a single physical property to define a complex feedstock. This chapter presents viable options to the antiquated definitions of the heavy feedstocks (heavy oil, extra-heavy oil, and tar sand bitumen) as well as an introduction to the various aspects of heavy feedstock refining in order for the reader to place each feedstock in the correct context of properties, behavior, and refining needs.

James G. Speight

2013-01-01T23:59:59.000Z

432

Thermal analysis of the ATLAS dump system  

E-Print Network [OSTI]

The dump system of the ATLAS Magnet, situated on third level of the USA15 cavern is an assembly of diodes and dump resistors through which the energy stored in the Magnet is dissipated when running down the magnet current to zero. The dump system is permanently connected to the Magnet through a system of bus bars and is able to dissipate about 1.5 GJ of energy in 3 hours. The goal of this thermal analysis, performed by ST/CV, is to understand whether the heat released by the dump system can be removed by free convection into the PX15 shaft or if forced ventilation is needed

Wichrowska Polok, I

2003-01-01T23:59:59.000Z

433

Measurements of the underlying event with ATLAS  

E-Print Network [OSTI]

Particle distributions sensitive to the underlying event and multi-parton interactions in proton-proton collisions have been measured with the ATLAS detector at the LHC at 7 TeV centre-of-mass energy. Various complementary measurements are presented, e.g. charged particle multiplicity, charged and inclusive sum transverse momentum densities and mean charged-particle transverse momentum in the regions of each event azimuthally transverse to the hardest jet or Z boson directions. When compared to the predictions of different Monte Carlo models, the data show sensitivity to the modelling of the underlying event.

Camarda, Stefano; The ATLAS collaboration

2014-01-01T23:59:59.000Z

434

Triangular flow in heavy ion collisions in a multiphase transport model  

E-Print Network [OSTI]

, S. A. Bass, and B. Mu?ller, Phys. Rev. C 82, 041901 (2010). [16] B. Schenke, S. Jeon, and C. Gale, Phys. Rev. Lett. 106, 042301 (2011). [17] J. Xu and C. M. Ko, Phys. Rev. C 83, 021903(R) (2011). [18] Z. W. Lin, C. M. Ko, B. A. Li, B. Zhang... correlations in both central and midcentral collisions. DOI: 10.1103/PhysRevC.84.014903 PACS number(s): 25.75.Ld, 12.38.Mh, 24.10.Lx I. INTRODUCTION Studies of anisotropic azimuthal flows in heavy ion col- lisions at the Relativistic Heavy Ion Collider...

Xu, Jun; Ko, Che Ming.

2011-01-01T23:59:59.000Z

435

Future of Jets, Heavy Flavor, and EM Probes at RHIC and RHIC II  

E-Print Network [OSTI]

Exciting results from the Relativistic Heavy Ion Collider (RHIC) have been presented at this Workshop. However, fundamental questions remain to be addressed in the future regarding whether the system is deconfined, chiral symmetry is restored, a color glass condensate exists in the initial state, and how the system evolves through eventual hadronization. Jets, heavy flavors and electromagnetic probes are sensitive to the initial high density stage of RHIC collisions, and should provide new insight. Significant additional capabilities will be added with a luminosity upgrade of RHIC (to RHIC II), upgrades of present detectors and a possible, new comprehensive detector at RHIC II.

John W. Harris

2005-04-23T23:59:59.000Z

436

BulletinVol. 64 -No. 27 August 6, 2010 The International Brotherhood of Electrical Workers (IBEW),  

E-Print Network [OSTI]

for the Relativistic Heavy Ion Collider, and the ACF, the computing facility, also located at BNL, for the ATLAS, was recognized for his outstanding and inno- vative leadership of the RCF, the computing facility- jor computing effort will meet the world-class needs of RHIC and ATLAS. The RCF runs... See Michael

Ohta, Shigemi

437

Higher Order Photon Transitions in H-like and He-like Ions R. W. Dunford,1  

E-Print Network [OSTI]

electron ions. Here we discuss two examples from recent experiments which were done using the ATLAS facility at Argonne National Laboratory. The ¢rst is a test of Relativistic Quantum Mechanics involving at the ATLAS heavy ion accelerator at Argonne National Laboratory. The ¢rst is a study of the spectral shape

Cheng, Song

438

The ATLAS Experiment: Getting Ready for the LHC  

SciTech Connect (OSTI)

At CERN the Large Hadron Collider (LHC) project is well advanced. First proton-proton collisions at the high-energy frontier are expected for the second half of 2007. In parallel to the collider construction the powerful general-purpose ATLAS detector is being assembled in its underground cavern by a world-wide collaboration. ATLAS will explore new domains of particle physics. After briefly overviewing the LHC construction and installation progress, the status of the ATLAS experiment will be presented, including examples of the exciting prospects for new physics.

Jenni, Peter (CERN) [CERN

2006-05-15T23:59:59.000Z

439

ATLAS Upgrades Towards the High Luminosity LHC  

E-Print Network [OSTI]

After successful LHC operation at the center-of-mass energy of 7 and 8 TeV in 2011 and 2012, plans are actively advancing for a series of upgrades, culminating roughly 10 years from now in the high luminosity LHC (HL-LHC) project, delivering of order five times the LHC nominal instantaneous luminosity along with luminosity levelling. The final goal is to extend the data set from about few hundred fb?1 expected for LHC running to 3000 fb?1 by around 2030. Current planning in ATLAS also has significant upgrades to the detector during the consolidation of the LHC to reach full LHC energy and further upgrades to accommodate running already beyond nominal luminosity this decade. The challenge of coping with HL-LHC instantaneous and integrated luminosity, along with the associated radiation levels, requires further major changes to the ATLAS detector. The designs are developing rapidly for an all-new inner-tracker, significant upgrades in the calorimeter and muon systems, as well as improved triggers and data a...

Cinca, D; The ATLAS collaboration

2014-01-01T23:59:59.000Z

440

NUMERICAL SIMULATIONS OF DRIVEN RELATIVISTIC MAGNETOHYDRODYNAMIC TURBULENCE  

SciTech Connect (OSTI)

A wide variety of astrophysical phenomena involve the flow of turbulent magnetized gas with relativistic velocity or energy density. Examples include gamma-ray bursts, active galactic nuclei, pulsars, magnetars, micro-quasars, merging neutron stars, X-ray binaries, some supernovae, and the early universe. In order to elucidate the basic properties of the relativistic magnetohydrodynamical (RMHD) turbulence present in these systems, we present results from numerical simulations of fully developed driven turbulence in a relativistically warm, weakly magnetized and mildly compressible ideal fluid. We have evolved the RMHD equations for many dynamical times on a uniform grid with 1024{sup 3} zones using a high-order Godunov code. We observe the growth of magnetic energy from a seed field through saturation at {approx}1% of the total fluid energy. We compute the power spectrum of velocity and density-weighted velocity U = {rho}{sup 1/3} v and conclude that the inertial scaling is consistent with a slope of -5/3. We compute the longitudinal and transverse velocity structure functions of order p up to 11 and discuss their possible deviation from the expected scaling for non-relativistic media. We also compute the scale-dependent distortion of coherent velocity structures with respect to the local magnetic field, finding a weaker scale dependence than is expected for incompressible non-relativistic flows with a strong mean field.

Zrake, Jonathan; MacFadyen, Andrew I. [Center for Cosmology and Particle Physics, Physics Department, New York University, New York, NY 10003 (United States)

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "atlas relativistic heavy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

An energy atlas of five Central American countries. Un atlas energetico de cinco paises Centroamericanos  

SciTech Connect (OSTI)

In a series of maps and figures, this atlas summarizes what is known about the energy resources and how these resources and oil imports supply the energy needs of five Central American countries: Guatemala, El Salvador, Honduras, Costa Rica, and Panama. The main exploited energy resources are firewood, hydroelectric energy, bagasse from sugar cane residues, and geothermal energy. Limited oil exploration in the region has uncovered modest oil resources only in Guatemala. Peat and small coal deposits are also known to exist but are not presently being exploited. After the description of energy resources, this atlas describes energy supply and demand patterns in each country. It concludes with a description of socioeconomic data that strongly affect energy demand. 4 refs.

Trocki, L.; Newman, C.K.; Gurule, F.; Aragon, P.C.; Peck, C.

1988-08-01T23:59:59.000Z

442

Shear-Viscosity to Entropy Density Ratio of a Relativistic Hadron Gas  

E-Print Network [OSTI]

Ultrarelativistic heavy-ion collisions at the Relativistic Heavy-Ion Collider (RHIC) are thought to have produced a state of matter called the Quark-Gluon-Plasma, characterized by a very small shear viscosity to entropy density ratio $\\eta/s$, near the lower bound predicted for that quantity by Anti-deSitter space/Conformal Field Theory (AdS/CFT) methods. As the produced matter expands and cools, it evolves through a phase described by a hadron gas with rapidly increasing $\\eta/s$. We calculate $\\eta/s$ as a function of temperature in this phase and find that its value poses a challenge for viscous relativistic hydrodynamics, which requires small values of $\\eta/s$ throughout the entire evolution of the reaction in order to successfully describe the collective flow observables at RHIC. We show that the inclusion of non-unit fugacities will reduce $\\eta/s$ in the hadronic phase, yet not sufficiently to be compatible with viscous hydrodynamics. We therefore conclude that the origin of the low viscosity matter at RHIC must be in the partonic phase of the reaction.

Nasser Demir; Steffen A. Bass

2008-12-12T23:59:59.000Z

443

PHYTOEXTRACTION OF HEAVY METALS  

E-Print Network [OSTI]

) Type of phytoremediation Cost effective form of environmental remediation (Glass 1999) Chelating Agents: desorb heavy metals from soil matrix and form water-soluble metal complexes (Shen et al -using hyperaccumulator plant biomass to produce a bio-ore for commercial use -Li et al. look at using Ni

Blouin-Demers, Gabriel

444

Symmetry and Covariance of Non-relativistic Quantum Mechanics  

E-Print Network [OSTI]

On the basis of a 5-dimensional form of space-time transformations non-relativistic quantum mechanics is reformulated in a manifestly covariant manner. The resulting covariance resembles that of the conventional relativistic quantum mechanics.

Minoru Omote; Susumu Kamefuchi

2000-05-10T23:59:59.000Z

445

Nuclear Saturation in a Relativistic Brueckner-Hartree-Fock Approach  

Science Journals Connector (OSTI)

Within the framework of a relativistic BruecknerHartree- Fock (RBHF) approach the equation of state for nuclear matter has been determined. The relativistic extension of the nonrelativistic Brueckner-Hartree-Fock...

R. Brockmann; R. Machleidt

1985-01-01T23:59:59.000Z

446

European Atlas of Soil Biodiversity | Open Energy Information  

Open Energy Info (EERE)

European Atlas of Soil Biodiversity European Atlas of Soil Biodiversity Jump to: navigation, search Tool Summary Name: European Atlas of Soil Biodiversity Agency/Company /Organization: European Commission Joint Research Centre Sector: Land Focus Area: Agriculture Topics: Resource assessment Resource Type: Publications, Guide/manual Website: eusoils.jrc.ec.europa.eu/library/maps/biodiversity_atlas/Documents/Bio UN Region: "Western & Eastern Europe" is not in the list of possible values (Eastern Africa, Middle Africa, Northern Africa, Southern Africa, Western Africa, Caribbean, Central America, South America, Northern America, Central Asia, Eastern Asia, Southern Asia, South-Eastern Asia, Western Asia, Eastern Europe, Northern Europe, Southern Europe, Western Europe, Australia and New Zealand, Melanesia, Micronesia, Polynesia, Latin America and the Caribbean) for this property.

447

Global Atlas for Solar and Wind Energy | Open Energy Information  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Global Atlas for Solar and Wind Energy Jump to: navigation, search Tool Summary Name: Global Atlas for Solar and Wind Energy Agency/Company /Organization: International Renewable Energy Agency (IRENA) Sector: Energy Focus Area: Renewable Energy References: IRENA - Global Atlas[1] Overview "The Global Atlas for Solar and Wind Energy project aims to create a collaborative internet-based Geographic Information System (GIS) of these renewable resources that can direct and enhance cooperation on global scenarios and strategies and support decision-making, especially in areas

448

The Cancer Genome Atlas Pan-Cancer analysis project  

E-Print Network [OSTI]

The Cancer Genome Atlas (TCGA) Research Network has profiled and analyzed large numbers of human tumors to discover molecular aberrations at the DNA, RNA, protein and epigenetic levels. The resulting rich data provide a ...

Lander, Eric S.

449

Document issued in preparation for the ATLAS User Workshop 2006  

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

a dedicated workshop. The current plan can be found on the ATLAS website at: (http:www.phy.anl.govatlasworkshop14ATLASStrategicPlan09.pdf). With the recent completion of...

450

Jet energy scale uncertainty correlations between ATLAS and CMS  

E-Print Network [OSTI]

The correlation of the jet energy scale uncertainties between the ATLAS and CMS experiments are presented in this note. The uncertainty components for both experiments are grouped into categories. For each of these categories, the detailed

CMS Collaboration

2014-01-01T23:59:59.000Z

451

Argonne Physics Division - ATLAS - PAC September 19, 2014  

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

reactions 6 1547LI S.Lalkovski Letter of Intent for developing a fast-timing array at the ATLAS Facility 1548 M. Petri Lifetime measurement of excited states in 16C 6 1551 A. H....

452

Wind Energy Resource Atlas of Armenia (CD-ROM)  

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

Resource Atlas of Armenia (CD-ROM) http:www.nrel.govdocsfy03osti33877CD.zip (ZIP 31.9 MB) NRELCD-500-33877 July 2003 Instructions: The URL above links to a zipped archive...

453

Heat conduction in relativistic neutral gases revisited  

E-Print Network [OSTI]

The kinetic theory of dilute gases to first order in the gradients yields linear relations between forces and fluxes. The heat flux for the relativistic gas has been shown to be related not only to the temperature gradient but also to the density gradient in the representation where number density, temperature and hydrodynamic velocity are the independent state variables. In this work we show the calculation of the corresponding transport coefficients from the full Boltzmann equation and compare the magnitude of the relativistic correction.

A. L. Garcia-Perciante; A. R. Mendez

2010-09-30T23:59:59.000Z

454

Cosmic Ray Muons Timing in the ATLAS Detector  

Science Journals Connector (OSTI)

In this talk I discuss the use of calorimeter timing both for detector commissioning and in searches for new physics. In particular I present real and simulated cosmic ray muons data (2007) results for the ATLAS Tile Calorimeter system. The analysis shows that several detector errors such as imperfect calibrations can be uncovered. I also demonstrate the use of ATLAS Tile Calorimeters excellent timing resolution in suppressing cosmic ray fake missing transverse energy (E T ) in searches for supersymmetry.

Bernhard Meirose; ATLAS Tile Calorimeter System

2009-01-01T23:59:59.000Z

455

Jet energy scale uncertainty correlations between ATLAS and CMS  

E-Print Network [OSTI]

The correlation of the jet energy scale uncertainties between the ATLAS and CMS experiments are presented in this note. The uncertainty components for both experiments are grouped in categories. For each of these categories, the detailed comparison of the procedures to determine the jet calibration and its uncertainties allows to estimate a range for the correlation coefficient between the two experiments, ranging from 0 (uncorrelated) to 100\\% (fully correlated). This information can be used for the combination of ATLAS and CMS precision measurements.

The ATLAS collaboration

2014-01-01T23:59:59.000Z

456

Quarkonium and hydrogen spectra with spin dependent relativistic wave equation  

E-Print Network [OSTI]

A non-linear non-perturbative relativistic atomic theory introduces spin in the dynamics of particle motion. The resulting energy levels of Hydrogen atom are exactly same as the Dirac theory. The theory accounts for the energy due to spin-orbit interaction and for the additional potential energy due to spin and spin-orbit coupling. Spin angular momentum operator is integrated into the equation of motion. This requires modification to classical Laplacian operator. Consequently the Dirac matrices and the k operator of Dirac's theory are dispensed with. The theory points out that the curvature of the orbit draws on certain amount of kinetic and potential energies affecting the momentum of electron and the spin-orbit interaction energy constitutes a part of this energy. The theory is developed for spin 1/2 bound state single electron in Coulomb potential and then further extended to quarkonium physics by introducing the linear confining potential. The unique feature of this quarkonium model is that the radial distance can be exactly determined and does not have a statistical interpretation. The established radial distance is then used to determine the wave function. The observed energy levels are used as the input parameters and the radial distance and the string tension are predicted. This ensures 100% conformance to all observed energy levels for the heavy quarkonium.

Vikram H. Zaveri

2014-11-25T23:59:59.000Z

457

General Relativistic Instability Supernova of a Supermassive Population III Star  

E-Print Network [OSTI]

The formation of supermassive Population III stars with masses $\\gtrsim$ 10,000 Msun in primeval galaxies in strong UV backgrounds at $z \\sim$ 15 may be the most viable pathway to the formation of supermassive black holes by $z \\sim$ 7. Most of these stars are expected to live for short times and then directly collapse to black holes, with little or no mass loss over their lives. But we have now discovered that non-rotating primordial stars with masses close to 55,000 Msun can instead die as highly energetic thermonuclear supernovae powered by explosive helium burning, releasing up to 10$ ^{55}$ erg, or about 10,000 times the energy of a Type Ia supernova. The explosion is triggered by the general relativistic contribution of thermal photons to gravity in the core of the star, which causes the core to contract and explosively burn. The energy release completely unbinds the star, leaving no compact remnant, and about half of the mass of the star is ejected into the early cosmos in the form of heavy elements. T...

Chen, Ke-Jung; Woosley, Stan; Almgren, Ann; Whalen, Daniel; Johnson, Jarrett

2014-01-01T23:59:59.000Z

458

Channeling Radiation from Relativistic Positrons in LiF  

Science Journals Connector (OSTI)

Unusual features of radiation spectra from relativistic positrons channeled in the ionic crystal LiF have been observed.

B. L. Berman; S. Datz; R. W. Fearick; J. O. Kephart; R. H. Pantell; H. Park; R. L. Swent

1982-08-16T23:59:59.000Z

459

Sobolev inequality for localization of pseudo-relativistic energy  

E-Print Network [OSTI]

In this article we present Sobolev-type inequalities for the localization of pseudo-relativistic energy.

A. A. Balinsky; A. E. Tyukov

2005-08-18T23:59:59.000Z

460

Heat conduction in relativistic systems: alternatives and perspectives  

E-Print Network [OSTI]

The non-equilibrium thermodynamics of relativistic systems have a rich phenomenology. The simplest phenomenon in the class of dissipative processes is that of heat. This letter presents a brief summary of the efforts made to tackle the problem of relativistic heat conduction. In particular, we focus on the multi-fluid approach to relativistic dissipation.

C. S. Lopez-Monsalvo

2010-11-30T23:59:59.000Z

Note: This page contains sample records for the topic "atlas relativistic heavy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

A two-fluid model for relativistic heat conduction  

SciTech Connect (OSTI)

Three years ago it was presented in these proceedings the relativistic dynamics of a multi-fluid system together with various applications to a set of topical problems [1]. In this talk, I will start from such dynamics and present a covariant formulation of relativistic thermodynamics which provides us with a causal constitutive equation for the propagation of heat in a relativistic setting.

Lpez-Monsalvo, Csar S. [Instituto de Ciencias Nucleares, Universidad Nacional Autnoma de Mxico (Mexico)

2014-01-14T23:59:59.000Z

462

Minimum Bias Triggers at ATLAS, LHC  

E-Print Network [OSTI]

In the first phase of LHC data-taking ATLAS will measure the charged-particle density at the initial center-of-mass energy of 10 TeV and then at 14 TeV. This will allow us improve our knowledge of soft QCD models and pin-down cross-sections of different classes of inelastic collisions at LHC energies. In particular, the dominant non-diffractive interaction is a key process to understanding QCD backgrounds when we reach higher luminosities. We highlight two minimum-bias triggers, sensitive to particles in complementary ranges in pseudo-rapidity, one based on signals from the Inner Detector, the other explicitly designed to trigger on inelastic processes. Studies of their trigger efficiencies as well as possible trigger biases are presented.

Regina Kwee

2008-12-02T23:59:59.000Z

463

PHENIX recent heavy flavor results  

E-Print Network [OSTI]

Cold nuclear matter (CNM) effects provide an important baseline for the interpretation of data in heavy ion collisions. Such effects include nuclear shadowing, Cronin effect, and initial patron energy loss, and it is interesting to study the dependence on impact parameter and kinematic region. Heavy quark production is a good measurement to probe the CNM effects particularly on gluons, since heavy quarks are mainly produced via gluon fusions at RHIC energy. The PHENIX experiment has experiment has ability to study the CNM effects by measuring heavy quark production in $d$$+$Au collisions at variety of kinematic ranges. Comparisons of heavy quark production at different rapidities allow us to study modification of gluon density function in the Au nucleus depending on momentum fraction. Furthermore, comparisons to the results from heavy ion collisions (Au$+$Au and Cu$+$Cu) measured by PHENIX provide insight into the role of CNM effects in such collisions. Recent PHENIX results on heavy quark production are discussed.

Sanghoon Lim for the PHENIX collaboration

2014-02-28T23:59:59.000Z

464

Relativistic magnetohydrodynamics winds from rotating neutron stars  

Science Journals Connector (OSTI)

......has found that force-free MHD allows a family of solutions...the magnetospheric structure in MHD with inertia and pressure included...phase over wider regions of the diagram (Rankin 1986; Deshpandhe Rankin...time-dependent relativistic MHD (RMHD) modelling of both highly......

N. Bucciantini; T. A. Thompson; J. Arons; E. Quataert; L. Del Zanna

2006-06-01T23:59:59.000Z

465

Testing Relativistic Gravity with Radio Pulsars  

E-Print Network [OSTI]

Before the 1970s, precision tests for gravity theories were constrained to the weak gravitational fields of the Solar system. Hence, only the weak-field slow-motion aspects of relativistic celestial mechanics could be investigated. Testing gravity beyond the first post-Newtonian contributions was for a long time out of reach. The discovery of the first binary pulsar by Russell Hulse and Joseph Taylor in the summer of 1974 initiated a completely new field for testing the relativistic dynamics of gravitationally interacting bodies. For the first time the back reaction of gravitational wave emission on the binary motion could be studied. Furthermore, the Hulse-Taylor pulsar provided the first test bed for the orbital dynamics of strongly self-gravitating bodies. To date there are a number of pulsars known, which can be utilized for precision test of gravity. Depending on their orbital properties and their companion, these pulsars provide tests for various different aspects of relativistic dynamics. Besides tests of specific gravity theories, like general relativity or scalar-tensor gravity, there are pulsars that allow for generic constraints on potential deviations of gravity from general relativity in the quasi-stationary strong-field and the radiative regime. This article presents a brief overview of this modern field of relativistic celestial mechanics, reviews some of the highlights of gravity tests with radio pulsars, and discusses their implications for gravitational physics and astronomy, including the upcoming gravitational wave astronomy.

Norbert Wex

2014-02-23T23:59:59.000Z

466

Relativistic rapidity as change in musical pitch  

E-Print Network [OSTI]

Relativistic rapidity is usually presented as a computational device. As Levy-Leblond has shown, it is also the velocity that would be imputed by an ideal Newtonian inertial guidance system, taking c=1*neper=1. Here, we show that it can also be interpreted as the change in musical pitch of radiation fore and aft along the direction of motion.

Alma Teao Wilson

2007-06-22T23:59:59.000Z

467

Relativistic atomic physics at the SSC  

SciTech Connect (OSTI)

This report discusses the following proposed work for relativistic atomic physics at the Superconducting Super Collider: Beam diagnostics; atomic physics research; staffing; education; budget information; statement concerning matching funds; description and justification of major items of equipment; statement of current and pending support; and assurance of compliance.

NONE

1990-12-31T23:59:59.000Z

468

Non-Abelian Gauge Fields. Relativistic Invariance  

Science Journals Connector (OSTI)

A simple criterion for Lorentz invariance in quantum field theory is stated as a commutator condition relating the energy density to the momentum density. With its aid a relativistically invariant radiation-gauge formulation is devised for a non-Abelian vector-gauge field coupled to a spin- Fermi field.

Julian Schwinger

1962-07-01T23:59:59.000Z

469

Detecting heavy quarks  

SciTech Connect (OSTI)

In this exercise we examine the performance of a detector specifically configured to tag heavy quark (HQ) jets through direct observations of D-meson decays with a high resolution vertex detector. To optimize the performance of such a detector, we assume the small diamond beam crossing configuration as described in the 1978 ISABELLE proposal, giving a luminosity of 10/sup 32/ cm/sup -2/ sec/sup -1/. Because of the very large backgrounds from light quark (LQ) jets, most triggering schemes at this luminosity require high P/sub perpendicular to/ leptons and inevitably give missing neutrinos. If alternative triggering schemes could be found, then one can hope to find and calculate the mass of objects decaying to heavy quarks. A scheme using the high resolution detector will also be discussed in detail. The study was carried out with events generated by the ISAJET Monte Carlo and a computer simulation of the described detector system. (WHK)

Benenson, G.; Chau, L.L.; Ludlam, T.; Paige, F.E.; Platner, E.D.; Protopopescu, S.D.; Rehak, P.

1983-01-01T23:59:59.000Z

470

World Bank eAtlas of Global Development | Open Energy Information  

Open Energy Info (EERE)

World Bank eAtlas of Global Development World Bank eAtlas of Global Development Jump to: navigation, search Tool Summary Name: World Bank eAtlas of Global Development Agency/Company /Organization: World Bank Topics: Co-benefits assessment, - Macroeconomic, - Energy Access, - Energy Security, - Environmental and Biodiversity, - Health Resource Type: Dataset Website: www.app.collinsindicate.com/worldbankatlas-global/en World Bank eAtlas of Global Development Screenshot References: World Bank eAtlas of Global Development[1] "This eAtlas, a new online companion to Atlas of Global Development, third edition, builds on the Atlas topics, allowing you to visualize and analyze a wider variety of data in greater depth, over a longer time period. You can: Map more than 175 World Bank indicators worldwide

471

E-Print Network 3.0 - atlas rpc rod Sample Search Results  

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

First Result of Global Commissioning of the ATALS Endcap Muon Trigger System in ATLAS Cavern Summary: ) with cos- mic rays. Participated ATLAS sub-systems were RPC and TGC with...

472

E-Print Network 3.0 - atlas central trigger Sample Search Results  

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

First Result of Global Commissioning of the ATALS Endcap Muon Trigger System in ATLAS Cavern Summary: logic as the normal output of the TGC trigger system to the ATLAS central...

473

E-Print Network 3.0 - atlas calorimeter system Sample Search...  

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

10 ATL-LARG-PROC-2009-001 21April2009 Summary: of the LAr calorimeter in the ATLAS cavern, the electronic calibration of the readout system has been... calorimeter The ATLAS...

474

E-Print Network 3.0 - atlas hadronic end-cap Sample Search Results  

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

First Result of Global Commissioning of the ATALS Endcap Muon Trigger System in ATLAS Cavern Summary: on the ATLAS commissioning run from the view point of the Thin Gap Chamber...

475

E-Print Network 3.0 - atlas rpc detector Sample Search Results  

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

First Result of Global Commissioning of the ATALS Endcap Muon Trigger System in ATLAS Cavern Summary: to the ATLAS cavern by the end of September 2007. To integrate all...

476

E-Print Network 3.0 - atlas detector safety Sample Search Results  

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

Victoria 16 +6 Total 79 +59 16 12;17 The ATLAS detector was built in an underground cavern like a ship... ;24 The ATLAS ... Source: Gagnon, Pauline - Department of Physics,...

477

E-Print Network 3.0 - atlas cavern side Sample Search Results  

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

cavern side Search Powered by Explorit Topic List Advanced Search Sample search results for: atlas cavern side Page: << < 1 2 3 4 5 > >> 1 Radiation in the USA15 cavern in ATLAS...

478

E-Print Network 3.0 - atlas first-level trigger Sample Search...  

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

High-Level Trigger Summary: , trigger. Note: This paper was presented by Stephen Armstrong on behalf of the ATLAS High Level Trigger... . The authors are with ATLAS High-Level...

479

E-Print Network 3.0 - atlas muon monitored Sample Search Results  

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

Level Summary: of the Third Level Muon Trigger of the ATLAS Experiment at LHC S. Armstrong, K. A. Assamagan, J. T. M. Baines... - ground environment expected for ATLAS. Index...

480

E-Print Network 3.0 - atlas precision muon Sample Search Results  

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

Level Summary: of the Third Level Muon Trigger of the ATLAS Experiment at LHC S. Armstrong, K. A. Assamagan, J. T. M. Baines... - ground environment expected for ATLAS. Index...

Note: This page contains sample records for the topic "atlas relativistic heavy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

E-Print Network 3.0 - atlas combined test Sample Search Results  

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

test Search Powered by Explorit Topic List Advanced Search Sample search results for: atlas combined test Page: << < 1 2 3 4 5 > >> 1 1. Atlas TRT Collaboration, The results of the...

482

E-Print Network 3.0 - atlas-based automatic segmentation Sample...  

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

for: atlas-based automatic segmentation Page: << < 1 2 3 4 5 > >> 1 Robust atlas-based brain segmentation using multi-structure confidence-weighted registration Summary: Robust...

483

E-Print Network 3.0 - average shaped atlas Sample Search Results  

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

shaped atlas Search Powered by Explorit Topic List Advanced Search Sample search results for: average shaped atlas Page: << < 1 2 3 4 5 > >> 1 Retrospective Cross-Evaluation of an...

484

E-Print Network 3.0 - atlas em calorimeter Sample Search Results  

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

Search Powered by Explorit Topic List Advanced Search Sample search results for: atlas em calorimeter Page: << < 1 2 3 4 5 > >> 1 LAPP-EXP-2007-05 The Atlas Liquid Argon...

485

South and South East REDD+ Atlas, Version 1 | Open Energy Information  

Open Energy Info (EERE)

South East REDD+ Atlas, Version 1 Jump to: navigation, search Tool Summary LAUNCH TOOL Name: South and South East REDD+ Atlas, Version 1 AgencyCompany Organization: USAID & LEAF...

486

E-Print Network 3.0 - avec atlas au Sample Search Results  

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

atlas au Search Powered by Explorit Topic List Advanced Search Sample search results for: avec atlas au Page: << < 1 2 3 4 5 > >> 1 Pauline Gagnon Indiana University 1 Le CERN, le...

487

Mapping Ocean Observations in a Dynamical Framework: A 2004-06 Ocean Atlas  

E-Print Network [OSTI]

This paper exploits a new observational atlas for the near-global ocean for the best-observed 3-yr period from December 2003 through November 2006. The atlas consists of mapped observations and derived quantities. Together ...

Forget, Gael

488

E-Print Network 3.0 - atlas web server Sample Search Results  

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

atlas web server Search Powered by Explorit Topic List Advanced Search Sample search results for: atlas web server Page: << < 1 2 3 4 5 > >> 1 A Portable Image Annotation Tool for...

489

Heavy Ions - Cyclotron  

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

Heavy Ions Heavy Ions Heavy ions used at the BASE Facility are accelerated in the form of "cocktails," named because of the fact that several heavy ions with the same mass-to-charge ratio are sent into the Cyclotron, which accelerates the ions while acting as a precision mass separator. The Control Room Operator then uses Cyclotron frequency to select only the desired ion, a process that takes about 2 minutes. We provide four standard cocktails: 4.5, 10, 16, and 30 MeV/nucleon. Depending on the cocktail, LETs from 1 to 100 MeV/(mg/cm^2) and flux levels of up to 1E7 ions/cm2-sec are available. Parts are tested in our vacuum chamber, and can be remotely positioned horizontally, vertically, or rotationally (y and z axes) with the motion table. An alignment laser is available to ensure the part is in the center of the beam. Mounting hardware is readily available. 12xBNC (F-F), 2x25-pin D (F-M or M-F), 4x40-pin flat ribbon (M-M), 4x50-pin flat ribbon (M-M), 12xSMA (F-F), and 2xEthernet vacuum feedthroughs are mounted upon request. (The 4x40-pin and 4x50-pin flat ribbon connectors are wired straight across, so you will need a F-F adapter to correct the pin numbers to normal.) Holes are provided through the cave shielding blocks for connecting additional test equipment, with a distance of approximately 10 feet from vacuum feedthrough to the top of the shielding block.

490

Utah Heavy Oil Program  

SciTech Connect (OSTI)

The Utah Heavy Oil Program (UHOP) was established in June 2006 to provide multidisciplinary research support to federal and state constituents for addressing the wide-ranging issues surrounding the creation of an industry for unconventional oil production in the United States. Additionally, UHOP was to serve as an on-going source of unbiased information to the nation surrounding technical, economic, legal and environmental aspects of developing heavy oil, oil sands, and oil shale resources. UHOP fulGilled its role by completing three tasks. First, in response to the Energy Policy Act of 2005 Section 369(p), UHOP published an update report to the 1987 technical and economic assessment of domestic heavy oil resources that was prepared by the Interstate Oil and Gas Compact Commission. The UHOP report, entitled 'A Technical, Economic, and Legal Assessment of North American Heavy Oil, Oil Sands, and Oil Shale Resources' was published in electronic and hard copy form in October 2007. Second, UHOP developed of a comprehensive, publicly accessible online repository of unconventional oil resources in North America based on the DSpace software platform. An interactive map was also developed as a source of geospatial information and as a means to interact with the repository from a geospatial setting. All documents uploaded to the repository are fully searchable by author, title, and keywords. Third, UHOP sponsored Give research projects related to unconventional fuels development. Two projects looked at issues associated with oil shale production, including oil shale pyrolysis kinetics, resource heterogeneity, and reservoir simulation. One project evaluated in situ production from Utah oil sands. Another project focused on water availability and produced water treatments. The last project considered commercial oil shale leasing from a policy, environmental, and economic perspective.

J. Bauman; S. Burian; M. Deo; E. Eddings; R. Gani; R. Goel; C.K. Huang; M. Hogue; R. Keiter; L. Li; J. Ruple; T. Ring; P. Rose; M. Skliar; P.J. Smith; J.P. Spinti; P. Tiwari; J. Wilkey; K. Uchitel

2009-10-20T23:59:59.000Z

491

Crystallization and collapse in relativistically degenerate matter  

SciTech Connect (OSTI)

In this paper, it is shown that a mass density limit exists beyond which the relativistically degenerate matter would crystallize. The mass density limit, found here, is quite analogous to the mass limit predicted by Chandrasekhar for a type of compact stars called white dwarfs (M{sub Ch} Asymptotically-Equal-To 1.43 Solar Mass). In this study, the old problem of white dwarf core collapse, which has been previously investigated by Chandrasekhar using hydrostatic stability criteria, is revisited in the framework of the quantum hydrodynamics model by inspection of the charge screening at atomic scales in the relativistic degeneracy plasma regime taking into account the relativistic Fermi-Dirac statistics and electron interaction features such as the quantum statistical pressure, Coulomb attraction, electron exchange-correlation, and quantum recoil effects. It is revealed that the existence of ion correlation and crystallization of matter in the relativistically degenerate plasma puts a critical mass density limit on white dwarf core region. It is shown that a white dwarf star with a core mass density beyond this critical limit can undergo the spontaneous core collapse (SCC). The SCC phenomenon, which is dominantly caused by the electron quantum recoil effect (interference and localization of the electron wave function), leads to a new exotic state of matter. In such exotic state, the relativistic electron degeneracy can lead the white dwarf crystallized core to undergo the nuclear fusion and an ultimate supernova by means of the volume reduction (due to the enhanced compressibility) and huge energy release (due to the increase in cohesive energy), under the stars huge inward gravitational pressure. Moreover, it is found that the SCC phenomenon is significantly affected by the core composition (it is more probable for heavier plasmas). The critical mass density found here is consistent with the values calculated for core density of typical white dwarf stars.

Akbari-Moghanjoughi, M. [International Centre for Advanced Studies in Physical Sciences and Institute for Theoretical Physics, Ruhr University Bochum, D-44780 Bochum, Germany and Department of Physics, Faculty of Sciences, Azarbaijan Shahid Madani University, 51745-406 Tabriz (Iran, Islamic Republic of)

2013-04-15T23:59:59.000Z

492

Probing QCD with jets, photons and weak bosons at the LHC with ATLAS  

SciTech Connect (OSTI)

A summary of ATLAS measurements that probe 'hard' QCD interactions in the protonproton collisions of the LHC are presented.

Cooper, Ben [University College London, London (United Kingdom); Collaboration: ATLAS Collaboration

2012-10-23T23:59:59.000Z

493

The ATLAS Liquid Argon Calorimeter Construction, Integration, Commissioning and Performance from Selected Particle Beam Test Results  

E-Print Network [OSTI]

­Construction of the ATLAS liquid argon calorimeter is now complete and integration with the ATLAS detector in the cavern with the move of the barrel cryostat to the ATLAS cavern. Since then, integration of the endcap calorimeters, waiting to be lowered into the cavern. The other will be moved to Point 1 by late 2005 / early 2006

Krieger, Peter

494

The First Result of Global Commissioning of the ATALS Endcap Muon Trigger System in ATLAS Cavern  

E-Print Network [OSTI]

The First Result of Global Commissioning of the ATALS Endcap Muon Trigger System in ATLAS Cavern T to the ATLAS cavern by the end of September 2007. To integrate all sub-detectors before the physics run. The first Result of Global Commissioning of the ATALS Endcap Muon Trigger System in ATLAS Cavern I

Fukunaga, Chikara

495

Scaling Up the Atlas Chip-Multiprocessor Peter G. Sassone, Student Member, IEEE, and  

E-Print Network [OSTI]

values, similar to Atlas. Since loops and blocks can be of any length, Trace Processors [3] introducedScaling Up the Atlas Chip-Multiprocessor Peter G. Sassone, Student Member, IEEE, and D. Scott Wills, Senior Member, IEEE Abstract--Atlas, a dynamically multithreading chip-multiprocessor (CMP), gains little

Wills, Scott

496

Atlas-Based Under-Segmentation Christian Wachinger1,2  

E-Print Network [OSTI]

Atlas-Based Under-Segmentation Christian Wachinger1,2 and Polina Golland1 1 Computer Science the widespread, but rarely discussed, tendency of atlas-based segmentation to under-segment the organs suggested by the atlas. We propose a generative model that corrects for this effect by learning

Golland, Polina

497

ATLAS MOTION PLATFORM MECANUM WHEEL JACOBIAN IN THE VELOCITY AND STATIC FORCE DOMAINS  

E-Print Network [OSTI]

ATLAS MOTION PLATFORM MECANUM WHEEL JACOBIAN IN THE VELOCITY AND STATIC FORCE DOMAINS Jonathan J applications. Atlas is a six degree of freedom vehicle op- erating training simulator motion platform where and static force Jacobians; normal forces. JACOBIAN DES ROUES MECANUM DU PLATFORME DE MOTION ATLAS DANS LES

Hayes, John

498

ATLAS on the BlueGene/L Preliminary Results Keith Seymour Haihang You Jack Dongarra  

E-Print Network [OSTI]

ATLAS on the BlueGene/L ­ Preliminary Results Keith Seymour Haihang You Jack Dongarra Department The goal of this work is to use ATLAS to produce a tuned linear algebra library for the BlueGene/L, while of the machine present a few difficulties for a straightforward port of ATLAS. The compute nodes themselves

Dongarra, Jack

499

ATLAS Version 3.8 : Overview and Status R. Clint Whaley  

E-Print Network [OSTI]

ATLAS Version 3.8 : Overview and Status R. Clint Whaley November 5, 2007 Abstract This paper describes the widely-used ATLAS (Automatically Tuned Linear Algebra Soft- ware) project as it stands today. ATLAS is an instantiation of a paradigm in high performance library production and maintenance, which we

Whaley, R. Clint

500

ATLAS MOTION PLATFORM MECANUM WHEEL JACOBIAN IN THE VELOCITY AND STATIC FORCE DOMAINS  

E-Print Network [OSTI]

ATLAS MOTION PLATFORM MECANUM WHEEL JACOBIAN IN THE VELOCITY AND STATIC FORCE DOMAINS Jonathan J. Atlas is a six degree of freedom vehicle op- erating training simulator motion platform where orienting force Jacobians; normal forces. MATRICE JACOBIENNE DES ROUES MECANUM SIMULATOUR DE MOUVEMENT ATLAS DANS

Hayes, John