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Note: This page contains sample records for the topic "accelerator system atlas" 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.


1

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.

2

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

3

E-Print Network 3.0 - atlas tdaq system Sample Search Results  

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

Accelerator System The prime national facility for nuclear structure... research The ATLAS facility is a leading facility for nuclear structure research in the United...

4

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

5

Accelerator Systems  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUCProductstwrmrAre the Effects ofAbout ScienceAboutAcceleration

6

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.

7

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.

8

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.

9

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.

10

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.

11

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.

12

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.

13

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.

14

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.

15

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

16

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

17

RFQ accelerator tuning system  

DOE Patents [OSTI]

A cooling system is provided for maintaining a preselected operating temperature in a device, which may be an RFQ accelerator, having a variable heat removal requirement, by circulating a cooling fluid through a cooling system remote from the device. Internal sensors in the device enable an estimated error signal to be generated from parameters which are indicative of the heat removal requirement from the device. Sensors are provided at predetermined locations in the cooling system for outputting operational temperature signals. Analog and digital computers define a control signal functionally related to the temperature signals and the estimated error signal, where the control signal is defined effective to return the device to the preselected operating temperature in a stable manner. The cooling system includes a first heat sink responsive to a first portion of the control signal to remove heat from a major portion of the circulating fluid. A second heat sink is responsive to a second portion of the control signal to remove heat from a minor portion of the circulating fluid. The cooled major and minor portions of the circulating fluid are mixed in response to a mixing portion of the control signal, which is effective to proportion the major and minor portions of the circulating fluid to establish a mixed fluid temperature which is effective to define the preselected operating temperature for the remote device. In an RFQ environment the stable temperature control enables the resonant frequency of the device to be maintained at substantially a predetermined value during transient operations.

Bolie, Victor W. (Albuquerque, NM)

1990-01-01T23:59:59.000Z

18

RFQ accelerator tuning system  

DOE Patents [OSTI]

A cooling system is provided for maintaining a preselected operating temperature in a device, which may be an RFQ accelerator, having a variable heat removal requirement, by circulating a cooling fluid through a cooling system remote from the device. Internal sensors in the device enable an estimated error signal to be generated from parameters which are indicative of the heat removal requirement from the device. Sensors are provided at predetermined locations in the cooling system for outputting operational temperature signals. Analog and digital computers define a control signal functionally related to the temperature signals and the estimated error signal, where the control signal is defined effective to return the device to the preselected operating temperature in a stable manner. The cooling system includes a first heat sink responsive to a first portion of the control signal to remove heat from a major portion of the circulating fluid. A second heat sink is responsive to a second portion of the control signal to remove heat from a minor portion of the circulating fluid. The cooled major and minor portions of the circulating fluid are mixed in response to a mixing portion of the control signal, which is effective to proportion the major and minor portions of the circulating fluid to establish a mixed fluid temperature which is effective to define the preselected operating temperature for the remote device. In an RFQ environment the stable temperature control enables the resonant frequency of the device to be maintained at substantially a predetermined value during transient operations. 3 figs.

Bolie, V.W.

1990-07-03T23:59:59.000Z

19

The Database Driven ATLAS Trigger Configuration System  

E-Print Network [OSTI]

This contribution describes the trigger selection configuration system of the ATLAS low- and high-level trigger (HLT) and the upgrades it received in preparation for LHC Run 2. The ATLAS trigger configuration system is responsible for applying the physics selection parameters for the online data taking at both trigger levels and the proper connection of the trigger lines across those levels. Here the low-level trigger consists of the already existing central trigger (CT) and the new Level-1 Topological trigger (L1Topo), which has been added for Run 2. In detail the tasks of the configuration system during the online data taking are Application of the selection criteria, e.g. energy cuts, minimum multiplicities, trigger object correlation, at the three trigger components L1Topo, CT, and HLT On-the-fly, e.g. rate-dependent, generation and application of prescale factors to the CT and HLT to adjust the trigger rates to the data taking conditions, such as falling luminosity or rate spikes in the detector readout ...

Martyniuk, Alex; The ATLAS collaboration

2015-01-01T23:59:59.000Z

20

Modular Web-Based Atlas Information Systems Bernhard Jenny  

E-Print Network [OSTI]

Modular Web-Based Atlas Information Systems Bernhard Jenny Institute of Cartography / ETH Zurich of Cartography / ETH Zurich / Zurich / Switzerland Radu Gogu Department of Geotechnical Engineering and Geo Institute of Cartography / ETH Zurich / Zurich / Switzerland Volker Dietrich Institute for Mineralogy

Jenny, Bernhard

Note: This page contains sample records for the topic "accelerator system atlas" 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

Parametric Study of Emerging High Power Accelerator Applications Using Accelerator Systems Model (ASM)  

E-Print Network [OSTI]

Parametric Study of Emerging High Power Accelerator Applications Using Accelerator Systems Model (ASM)

Berwald, D H; Myers, T J; Paulson, C C; Peacock, M A; Piaszczyk, C M; Rathke, J W; Piechowiak, E M

1996-01-01T23:59:59.000Z

22

E-Print Network 3.0 - atlas readout system 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: by CTP is distributed to all the ATLAS readout systems by the TTC complex...

23

E-Print Network 3.0 - atlas daq system Sample Search Results  

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

system Search Powered by Explorit Topic List Advanced Search Sample search results for: atlas daq system Page: << < 1 2 3 4 5 > >> 1 The ATLAS Event Filter , C.P. Bee2 Summary:...

24

E-Print Network 3.0 - atlas positive ion Sample Search Results  

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

Accelerator System The prime national facility for nuclear structure... research The ATLAS facility is a leading facility for nuclear structure research in the United...

25

E-Print Network 3.0 - atlas central solenoid Sample Search Results  

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

Accelerator System The prime national facility for nuclear structure... research The ATLAS facility is a leading facility for nuclear structure research in the United...

26

E-Print Network 3.0 - atlas mdt spectrometer Sample Search Results  

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

Accelerator System The prime national facility for nuclear structure... research The ATLAS facility is a leading facility for nuclear structure research in the United...

27

E-Print Network 3.0 - atlas presents award Sample Search Results  

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

Accelerator System The prime national facility for nuclear structure... research The ATLAS facility is a leading facility for nuclear structure research in the United...

28

ATLAS  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUCProductstwrmrAre the Effects of GlobalASCR UserProgramI -ATHENA could ATLAS

29

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...

30

GPUs as Storage System Accelerators  

E-Print Network [OSTI]

Massively multicore processors, such as Graphics Processing Units (GPUs), provide, at a comparable price, a one order of magnitude higher peak performance than traditional CPUs. This drop in the cost of computation, as any order-of-magnitude drop in the cost per unit of performance for a class of system components, triggers the opportunity to redesign systems and to explore new ways to engineer them to recalibrate the cost-to-performance relation. This project explores the feasibility of harnessing GPUs' computational power to improve the performance, reliability, or security of distributed storage systems. In this context, we present the design of a storage system prototype that uses GPU offloading to accelerate a number of computationally intensive primitives based on hashing, and introduce techniques to efficiently leverage the processing power of GPUs. We evaluate the performance of this prototype under two configurations: as a content addressable storage system that facilitates online similarity detectio...

Al-Kiswany, Samer; Ripeanu, Matei

2012-01-01T23:59:59.000Z

31

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

32

Accelerating the transformation of power systems  

E-Print Network [OSTI]

Accelerating the transformation of power systems Ancillary Services Peer Exchange with India- to-peer consultation. The 21st Century Power Partnership aims to accelerate the global transformation consultative support Accelerating the transformation of power systems NREL/FS-6A20-61811 · May 2014 15013

33

Experience with highly-parallel software for the storage system of the ATLAS Experiment at CERN  

E-Print Network [OSTI]

The ATLAS experiment is observing proton-proton collisions delivered by the LHC accelerator. The ATLAS Trigger and Data Acquisition (TDAQ) system selects interesting events on-line in a three-level trigger system in order to store them at a budgeted rate of several hundred Hz. This paper focuses on the TDAQ data-logging system and in particular on the implementation and performance of a novel parallel software design. In this respect, the main challenge presented by the data-logging workload is the conflict between the largely parallel nature of the event processing, especially the recently introduced event compression, and the constraint of sequential file writing and checksum evaluation. This is further complicated by the necessity of operating in a fully data-driven mode, to cope with continuously evolving trigger and detector configurations. In this paper we report on the design of the new ATLAS on-line storage software. In particular we will discuss our development experience using recent concurrency-ori...

Colombo, T; The ATLAS collaboration

2012-01-01T23:59:59.000Z

34

E-Print Network 3.0 - atlas linear accelerator Sample Search...  

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

Summary: experimentalists (ATLAS, T2K, SNOLAB, smaller experiments) - 70 theorists (phenomenology, string theory, formal... theory) 12;TRIUMF National lab for subatomic physics...

35

E-Print Network 3.0 - accelerator facility atlas Sample Search...  

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

experimentalists (ATLAS, T2K, SNOLAB, smaller experiments) - 70 theorists (phenomenology, string theory, formal... theory) 12;TRIUMF National lab for subatomic physics...

36

ATLAS computing on CSCS HPC  

E-Print Network [OSTI]

The Piz Daint Cray XC30 HPC system at CSCS, the Swiss National Supercomputing centre, is in 2014 the highest ranked European system on TOP500, also featuring GPU accelerators. Event generation and detector simulation for the ATLAS experiment has been enabled for this machine. We report on the technical solutions, performance, HPC policy challenges and possible future opportunities for HEP on extreme HPC systems. In particular a custom made integration to the ATLAS job submission system has been developed via the Advanced Resource Connector (ARC) middleware. Further, some GPU acceleration of the Geant4 detector simulations were implemented to justify the allocation request for this machine.

Filipcic, Andrej; The ATLAS collaboration; Weber, Michele; Walker, Rodney; Hostettler, Michael Artur

2015-01-01T23:59:59.000Z

37

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

38

Operation of the Upgraded ATLAS Level-1 Central Trigger System  

E-Print Network [OSTI]

The ATLAS Level-1 Central Trigger (L1CT) system is a central part of ATLAS data-taking and has undergone a major upgrade for Run 2 of the LHC, in order to cope with the expected increase of instantaneous luminosity of a factor of 2 with respect to Run 1. The upgraded hardware offers more flexibility in the trigger decisions due to the double amount of trigger inputs and usable trigger channels. It also provides an interface to the new topological trigger system. Operationally - particularly useful for commissioning, calibration and test runs - it allows concurrent running of up to 3 different sub-detector combinations. In this contribution, we give an overview of the operational software framework of the L1CT system with particular emphasis of the configuration, controls and monitoring aspects. The software framework allows a consistent configuration with respect to the ATLAS experiment and the LHC machine, upstream and downstream trigger processors, and the data acquisition. Trigger and dead-time rates are m...

Glatzer, Julian Maximilian Volker; The ATLAS collaboration

2015-01-01T23:59:59.000Z

39

E-Print Network 3.0 - accelerator system accelerator Sample Search...  

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

systems Michael J... - based systems that emphasize computation on accelerators (rather than on general purpose cores) should... in these accelerator-based...

40

E-Print Network 3.0 - atlas muon system 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: The First Result of Global Commissioning of the ATALS Endcap Muon Trigger...

Note: This page contains sample records for the topic "accelerator system atlas" 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

E-Print Network 3.0 - acquisition system atlas Sample Search...  

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: The First Result of Global Commissioning of the ATALS Endcap Muon Trigger...

42

E-Print Network 3.0 - atlas trigger system 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: The First Result of Global Commissioning of the ATALS Endcap Muon Trigger...

43

Solar system constraints on Rindler acceleration  

E-Print Network [OSTI]

We discuss the classical tests of general relativity in the presence of Rindler acceleration. Among these tests the perihelion shifts give the tightest constraints and indicate that the Pioneer anomaly cannot be caused by a universal solar system Rindler acceleration. We address potential caveats for massive test-objects. Our tightest bound on Rindler acceleration that comes with no caveats is derived from radar echo delay and yields |a|<3nm/s^2.

Sante Carloni; Daniel Grumiller; Florian Preis

2011-05-09T23:59:59.000Z

44

E-Print Network 3.0 - argonne tandem-line accelerator Sample...  

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

Accelerator System (ATLAS) facility at Argonne. Pure samples of neptunium, americium and curium... InsIde ArgonneDirector:Americaneedstoreigniteinnovationecology'-Page2 ......

45

E-Print Network 3.0 - argonne wakefield accelerator Sample Search...  

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

Accelerator System (ATLAS) facility at Argonne. Pure samples of neptunium, americium and curium... InsIde ArgonneDirector:Americaneedstoreigniteinnovationecology'-Page2 ......

46

Experience with highly-parallel software for the storage system of the ATLAS Experiment at CERN  

E-Print Network [OSTI]

The ATLAS experiment is observing proton-proton collisions delivered by the LHC accelerator at a centre of mass energy of 7 TeV. The ATLAS Trigger and Data Acquisition (TDAQ) system selects interesting events on-line in a three-level trigger system in order to store them at a budgeted rate of several hundred Hz, for an average event size of ~1.2 MB. This paper focuses on the TDAQ data-logging system and in particular on the implementation and performance of a novel SW design, reporting on the effort of exploiting the full power of recently installed multi-core hardware. In this respect, the main challenge presented by the data-logging workload is the conflict between the largely parallel nature of the event processing, especially the recently introduced on-line event-compression, and the constraint of sequential file writing and checksum evaluation. This is furtherly complicated by the necessity of operating in a fully data-driven mode, to cope with continuously evolving trigger and detector configurations. T...

Colombo, T; The ATLAS collaboration

2012-01-01T23:59:59.000Z

47

Precise Timing Adjustment for the ATLAS Level1 Endcap Muon Trigger System , O. Sasakia  

E-Print Network [OSTI]

Precise Timing Adjustment for the ATLAS Level1 Endcap Muon Trigger System Y. Suzukia , O. Sasakia by Yu Suzuki yu.suzuki@cern.ch Abstract The ATLAS level-1 endcap muon trigger system consists of about alignment of individual channels with the timing adjust- ment facility embedded in the TGC electronics

Fukunaga, Chikara

48

A new relativistic kinematics of accelerated systems  

E-Print Network [OSTI]

We consider transformations between uniformly accelerated systems, assuming that the Clock Hypothesis is false. We use the proper velocity-time description of events rather than the usual space-time description in order to obtain linear transformations. Based on the generalized principle of relativity and the ensuing symmetry, we obtain transformations of Lorentz-type. We predict the existence of a maximal acceleration and time dilation due to acceleration. We also predict a Doppler shift due to acceleration of the source in addition to the shift due to the source's velocity. Based on our results, we explain the W. K\\"{u}ndig experiment, as reanalyzed by Kholmetski \\textit{et al}, and obtain an estimate of the maximal acceleration.

Yaakov Friedman; Yuriy Gofman

2005-09-01T23:59:59.000Z

49

Rucio, the next-generation Data Management system in ATLAS  

E-Print Network [OSTI]

Rucio is the next-generation of Distributed Data Management (DDM) system benefiting from recent advances in cloud and "Big Data" computing to address HEP experiments scaling requirements. Rucio is an evolution of the ATLAS DDM system Don Quijote 2 (DQ2), which has demonstrated very large scale data management capabilities with more than 160 petabytes spread worldwide across 130 sites, and accesses from 1,000 active users. However, DQ2 is reaching its limits in terms of scalability, requiring a large number of support staff to operate and being hard to extend with new technologies. Rucio addresses these issues by relying on new technologies to ensure system scalability, cover new user requirements and employ new automation framework to reduce operational overheads. In this talk, we will present the history of the DDM project and the experience of data management operation in ATLAS computing. Thus, We will show the key concepts of Rucio, including its data organization. The Rucio design, and the technology it e...

Serfon, C; The ATLAS collaboration; Beermann, T; Garonne, V; Goossens, L; Lassnig, M; Nairz, A; Vigne, R

2014-01-01T23:59:59.000Z

50

The ATLAS Trigger System: Ready for Run-2  

E-Print Network [OSTI]

The ATLAS trigger has been used very successfully for the online event selection during the first run of the LHC between 2009-2013 at a centre-of-mass energy between 900 GeV and 8 TeV. The trigger system consists of a hardware Level-1 (L1) and a software based high-level trigger (HLT) that reduces the event rate from the design bunch-crossing rate of 40 MHz to an average recording rate of a few hundred Hz. During the next data-taking period starting in early 2015 (Run-2) the LHC will operate at a centre-of-mass energy of about 13 TeV resulting in roughly five times higher trigger rates. We will review the upgrades to the ATLAS Trigger system that have been implemented during the shutdown and that will allow us to cope with these increased trigger rates while maintaining or even improving our efficiency to select relevant physics processes. This includes changes to the L1 calorimeter trigger, the introduction of a new L1 topological trigger module, improvements in the L1 muon system and the merging of the prev...

Nakahama, Yu; The ATLAS collaboration

2015-01-01T23:59:59.000Z

51

Vehicle Systems Integration Laboratory Accelerates Powertrain Development  

ScienceCinema (OSTI)

ORNL's Vehicle Systems Integration (VSI) Laboratory accelerates the pace of powertrain development by performing prototype research and characterization of advanced systems and hardware components. The VSI Lab is capable of accommodating a range of platforms from advanced light-duty vehicles to hybridized Class 8 powertrains with the goals of improving overall system efficiency and reducing emissions.

None

2014-06-25T23:59:59.000Z

52

Vehicle Systems Integration Laboratory Accelerates Powertrain Development  

SciTech Connect (OSTI)

ORNL's Vehicle Systems Integration (VSI) Laboratory accelerates the pace of powertrain development by performing prototype research and characterization of advanced systems and hardware components. The VSI Lab is capable of accommodating a range of platforms from advanced light-duty vehicles to hybridized Class 8 powertrains with the goals of improving overall system efficiency and reducing emissions.

None

2014-04-15T23:59:59.000Z

53

Application accelerator system having bunch control  

DOE Patents [OSTI]

An application accelerator system for monitoring the gain of a free electron laser is disclosed. Coherent Synchrotron Radiation (CSR) detection techniques are used with a bunch length monitor for ultra short, picosec to several tens of femtosec, electron bunches. The monitor employs an application accelerator, a coherent radiation production device, an optical or beam chopping device, an infrared radiation collection device, a narrow-banding filter, an infrared detection device, and a control. 1 fig.

Wang, D.; Krafft, G.A.

1999-06-22T23:59:59.000Z

54

Application accelerator system having bunch control  

DOE Patents [OSTI]

An application accelerator system for monitoring the gain of a free electron laser. Coherent Synchrotron Radiation (CSR) detection techniques are used with a bunch length monitor for ultra short, picosec to several tens of femtosec, electron bunches. The monitor employs an application accelerator, a coherent radiation production device, an optical or beam chopping device, an infrared radiation collection device, a narrow-banding filter, an infrared detection device, and a control.

Wang, Dunxiong (Newport News, VA); Krafft, Geoffrey Arthur (Newport News, VA)

1999-01-01T23:59:59.000Z

55

The BNL Accelerator Test Facility control system  

SciTech Connect (OSTI)

Described is the VAX/CAMAC-based control system for Brookhaven National Laboratory's Accelerator Test Facility, a laser/linac research complex. Details of hardware and software configurations are presented along with experiences of using Vsystem, a commercial control system package.

Malone, R.; Bottke, I.; Fernow, R.; Ben-Zvi, I.

1993-01-01T23:59:59.000Z

56

E-Print Network 3.0 - atlas production system Sample Search Results  

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

University Collection: Engineering 76 Atlas Data-Challenge 1 on NorduGrid P. Eerola, B. Konya, O. Smirnova Summary: -runTimeEnvironment in the Infor- mation System. This assured...

57

Induction accelerators for the phase rotator system  

SciTech Connect (OSTI)

The principle of magnetic induction has been applied to the acceleration of high current beams in betatrons and a variety of induction accelerators. The linear induction accelerator (LIA) consists of a simple nonresonant structure where the drive voltage is applied to an axially symmetric gap that encloses a toroidal ferromagnetic material. The change in flux in the magnetic core induces an axial electric field that provides particle acceleration. This simple nonresonant (low Q) structure acts as a single turn transformer that can accelerate from hundreds of amperes to tens of kiloamperes, basically only limited by the drive impedance. The LIA is typically a low gradient structure that can provide acceleration fields of varying shapes and time durations from tens of nanoseconds to several microseconds. The efficiency of the LIA depends on the beam current and can exceed 50% if the beam current exceeds the magnetization current required by the ferromagnetic material. The acceleration voltage available is simply given by the expression V=A dB/dt. Hence, for a given cross section of material, the beam pulse duration influences the energy gain. Furthermore, a premium is put on minimizing the diameter, which impacts the total weight or cost of the magnetic material. The diameter doubly impacts the cost of the LIA since the power (cost) to drive the cores is proportional to the volume as well. The waveform requirements during the beam pulse makes it necessary to make provisions in the pulsing system to maintain the desired dB/dt during the useful part of the acceleration cycle. This is typically done two ways, by using the final stage of the pulse forming network (PFN) and by the pulse compensation network usually in close proximity of the acceleration cell. The choice of magnetic materials will be made by testing various materials both ferromagnetic and ferrimagnetic. These materials will include the nickel-iron, silicon steel amorphous and various types of ferrites not only to determine the properties that are essential in this application but the energy losses in the magnetization process which directly impact the cost.

Reginato, Lou; Yu, Simon; Vanecek, Dave

2001-07-30T23:59:59.000Z

58

Rucio, the next-generation Data Management system in ATLAS  

E-Print Network [OSTI]

Rucio is the next-generation of Distributed Data Management (DDM) system benefiting from recent advances in cloud and "Big Data" computing to address HEP experiments scaling requirements. Rucio is an evolution of the ATLAS DDM system Don Quijote 2 (DQ2), which has demonstrated very large scale data management capabilities with more than 160 petabytes spread worldwide across 130 sites, and accesses from 1,000 active users. However, DQ2 is reaching its limits in terms of scalability, requiring a large number of support staff to operate and being hard to extend with new technologies. Rucio addresses these issues by relying on new technologies to ensure system scalability, cover new user requirements and employ new automation framework to reduce operational overheads. This paper shows the key concepts of Rucio, details the Rucio design, and the technology it employs, the tests that were conducted to validate it and finally describes the migration steps that were conducted to move from DQ2 to Rucio.

Serfon, C; The ATLAS collaboration; Beermann, T; Garonne, V; Goossens, L; Lassnig, M; Nairz, A; Vigne, R

2014-01-01T23:59:59.000Z

59

Uncertainty assessment for accelerator-driven systems.  

SciTech Connect (OSTI)

The concept of a subcritical system driven by an external source of neutrons provided by an accelerator ADS (Accelerator Driver System) has been recently revived and is becoming more popular in the world technical community with active programs in Europe, Russia, Japan, and the U.S. A general consensus has been reached in adopting for the subcritical component a fast spectrum liquid metal cooled configuration. Both a lead-bismuth eutectic, sodium and gas are being considered as a coolant; each has advantages and disadvantages. The major expected advantage is that subcriticality avoids reactivity induced transients. The potentially large subcriticality margin also should allow for the introduction of very significant quantities of waste products (minor Actinides and Fission Products) which negatively impact the safety characteristics of standard cores. In the U.S. these arguments are the basis for the development of the Accelerator Transmutation of Waste (ATW), which has significant potential in reducing nuclear waste levels. Up to now, neutronic calculations have not attached uncertainties on the values of the main nuclear integral parameters that characterize the system. Many of these parameters (e.g., degree of subcriticality) are crucial to demonstrate the validity and feasibility of this concept. In this paper we will consider uncertainties related to nuclear data only. The present knowledge of the cross sections of many isotopes that are not usually utilized in existing reactors (like Bi, Pb-207, Pb-208, and also Minor Actinides and Fission Products) suggests that uncertainties in the integral parameters will be significantly larger than for conventional reactor systems, and this raises concerns on the neutronic performance of those systems.

Finck, P. J.; Gomes, I.; Micklich, B.; Palmiotti, G.

1999-06-10T23:59:59.000Z

60

Accelerator Driven System Target Requirements and R&D  

E-Print Network [OSTI]

-nosed assessment, addressing the technical requirements for ADS the current status and readiness of accelerator #12;Accelerator Driven Systems High-power, highly reliable proton accelerator · ~1 GeV beam energy · ~1 MW of beam power for demonstration · Tens of MW beam power for Industrial-Scale System Spallation

McDonald, Kirk

Note: This page contains sample records for the topic "accelerator system atlas" 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.


61

Novel, Highly-Parallel Software for the Online Storage System of the ATLAS Experiment at CERN: Design and Performances  

E-Print Network [OSTI]

Abstract--- The ATLAS experiment observes proton-proton collisions delivered by the LHC accelerator at CERN. The ATLAS Trigger and Data Acquisition (TDAQ) system selects interesting events on-line in a three-level trigger system in order to store them at a budgeted rate of several hundred Hz, for an average event size of ~1.5 MB. This paper focuses on the TDAQ data-logging system and in particular on the implementation and performance of a novel software design, reporting on the effort of exploiting the full power of multi-core hardware. In this respect, the main challenge presented by the data-logging workload is the conflict between the largely parallel nature of the event processing, including the recently introduced on-line event-compression, and the constraint of sequential file writing and checksum evaluation. This is further complicated by the necessity of operating in a fully data-driven mode, to cope with continuously evolving trigger and detector configurations. In this paper we will briefly discuss...

Colombo, T; The ATLAS collaboration

2012-01-01T23:59:59.000Z

62

Novel, Highly-Parallel Software for the Online Storage System of the ATLAS Experiment at CERN: Design and Performances  

E-Print Network [OSTI]

The ATLAS experiment observes proton-proton collisions delivered by the LHC accelerator at CERN. The ATLAS Trigger and Data Acquisition (TDAQ) system selects interesting events on-line in a three-level trigger system in order to store them at a budgeted rate of several hundred Hz, for an average event size of ~1.5 MB. This paper focuses on the TDAQ data-logging system and in particular on the implementation and performance of a novel SW design, reporting on the effort of exploiting the full power of recently installed multi-core hardware. In this respect, the main challenge presented by the data-logging workload is the conflict between the largely parallel nature of the event processing, including the recently introduced on-line event-compression, and the constraint of sequential file writing and checksum evaluation. This is further complicated by the necessity of operating in a fully data-driven mode, to cope with continuously evolving trigger and detector configurations. In this paper we report on the desig...

Colombo, T; The ATLAS collaboration

2012-01-01T23:59:59.000Z

63

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:...

64

E-Print Network 3.0 - atlas control 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:...

65

An Emulator of Timing, Trigger and Control (TTC) System for the ATLAS End cap Muon Trigger Electronics  

E-Print Network [OSTI]

An Emulator of Timing, Trigger and Control (TTC) System for the ATLAS End cap Muon Trigger and their sequences needed for the ATLAS TGC electronics. Almost all functionalities are packed in an FPGA chip, which of the mother board electronics system. I. INTRODUCTION In general a facility for TTC signal generation

Fukunaga, Chikara

66

ATLAS ATLID Algorithms and Level 2 System Aspects ATBD Contract No 22638/09/NL/CT Page 1 of 49  

E-Print Network [OSTI]

ATLAS ­ ATLID Algorithms and Level 2 System Aspects ATBD Contract No 22638/09/NL/CT Page 1 of 49 Issue 2.2 ATLAS ATLID Algorithms and Level 2 System Aspects Algorithm Theoretical Basis Document (ATBD.P. Donovan G-J van Zadelhoff #12;ATLAS ­ ATLID Algorithms and Level 2 System Aspects ATBD Contract No 22638

Stoffelen, Ad

67

ATLAS ATLID Algorithms and Level 2 System Aspects ATBD Contract No 22638/09/NL/CT Page 1 of 25  

E-Print Network [OSTI]

ATLAS ­ ATLID Algorithms and Level 2 System Aspects ATBD Contract No 22638/09/NL/CT Page 1 of 25 Issue 1.3 ATLAS ATLID Algorithms and Level 2 System Aspects Algorithm Theoretical Basis Document (ATBD-J van Zadelhoff #12;ATLAS ­ ATLID Algorithms and Level 2 System Aspects ATBD Contract No 22638/09/NL

Stoffelen, Ad

68

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

69

Systems and methods for the magnetic insulation of accelerator electrodes in electrostatic accelerators  

DOE Patents [OSTI]

The present invention provides systems and methods for the magnetic insulation of accelerator electrodes in electrostatic accelerators. Advantageously, the systems and methods of the present invention improve the practically obtainable performance of these electrostatic accelerators by addressing, among other things, voltage holding problems and conditioning issues. The problems and issues are addressed by flowing electric currents along these accelerator electrodes to produce magnetic fields that envelope the accelerator electrodes and their support structures, so as to prevent very low energy electrons from leaving the surfaces of the accelerator electrodes and subsequently picking up energy from the surrounding electric field. In various applications, this magnetic insulation must only produce modest gains in voltage holding capability to represent a significant achievement.

Grisham, Larry R

2013-12-17T23:59:59.000Z

70

gLExec Integration with the ATLAS PanDA Workload Management System  

E-Print Network [OSTI]

The ATLAS Experiment at the Large Hadron Collider has collected data during Run 1 and is ready to collect data in Run 2. The ATLAS data are distributed, processed and analysed at more than 130 grid and cloud sites across the world. At any given time, there are more than 150,000 concurrent jobs running and about a million jobs are submitted on a daily basis on behalf of thousands of physicists within the ATLAS collaboration. The Production and Distributed Analysis (PanDA) workload management system has proved to be a key component of ATLAS and plays a crucial role in the success of the large-scale distributed computing as it is the sole system for distributed processing of Grid jobs across the collaboration since October 2007. ATLAS user jobs are executed on worker nodes by pilots sent to the sites by pilot factories. This pilot architecture has greatly improved job reliability and although it has clear advantages, such as making the working environment homogeneous by hiding any potential heterogeneities, the ...

Karavakis, Edward; The ATLAS collaboration; Campana, Simone; De, Kaushik; Di Girolamo, Alessandro; Litmaath, Maarten; Maeno, Tadashi; Medrano Llamas, Ramon; Nilsson, Paul; Wenaus, Torre

2015-01-01T23:59:59.000Z

71

accelerator driven systems: Topics by E-print Network  

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

purpose of incinerating long-lived radionuclides in high- level waste 5 Thorium as a Fuel for Accelerator Driven Subcritical Electronuclear Systems CERN Preprints Summary:...

72

accelerator driven system: Topics by E-print Network  

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

purpose of incinerating long-lived radionuclides in high- level waste 5 Thorium as a Fuel for Accelerator Driven Subcritical Electronuclear Systems CERN Preprints Summary:...

73

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

74

Proliferation Potential of Accelerator-Drive Systems: Feasibility Calculations  

SciTech Connect (OSTI)

Accelerator-driven systems for fissile materials production have been proposed and studied since the early 1950s. Recent advances in beam power levels for small accelerators have raised the possibility that such use could be feasible for a potential proliferator. The objective of this study is to review the state of technology development for accelerator-driven spallation neutron sources and subcritical reactors. Energy and power requirements were calculated for a proton accelerator-driven neutron spallation source and subcritical reactors to produce a significant amount of fissile material--plutonium.

Riendeau, C.D.; Moses, D.L.; Olson, A.P.

1998-11-01T23:59:59.000Z

75

E-Print Network 3.0 - atlas tracker upgrade Sample Search Results  

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

research Summary: spectrometry. Future developments Since its inception in 1985, the ATLAS facility has continually been upgraded... ATLAS Argonne Tandem Linear Accelerator...

76

E-Print Network 3.0 - atlas strips upgrade Sample Search Results  

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

research Summary: spectrometry. Future developments Since its inception in 1985, the ATLAS facility has continually been upgraded... ATLAS Argonne Tandem Linear Accelerator...

77

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

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

research Summary: spectrometry. Future developments Since its inception in 1985, the ATLAS facility has continually been upgraded... ATLAS Argonne Tandem Linear Accelerator...

78

Accelerator Systems Division (ASD) | Advanced Photon Source  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUCProductstwrmrAre the Effects ofAbout ScienceAboutAccelerationAccelerator

79

Fine grained event processing on HPCs with the ATLAS Yoda system  

E-Print Network [OSTI]

High performance computing facilities present unique challenges and opportunities for HENP event processing. The massive scale of many HPC systems means that fractionally small utilizations can yield large returns in processing throughput. Parallel applications which can dynamically and efficiently fill any scheduling opportunities the resource presents benefit both the facility (maximal utilization) and the (compute-limited) science. The ATLAS Yoda system provides this capability to HENP-like event processing applications by implementing event-level processing in an MPI-based master-client model that integrates seamlessly with the more broadly scoped ATLAS Event Service. Fine grained, event level work assignments are intelligently dispatched to parallel workers to sustain full utilization on all cores, with outputs streamed off to destination object stores in near real time with similarly fine granularity, such that processing can proceed until termination with full utilization. The system offers the efficie...

Calafiura, Paolo; The ATLAS collaboration; Guan, Wen; Maeno, Tadashi; Nilsson, Paul; Oleynik, Danila; Panitkin, Sergey; Tsulaia, Vakhtang; van Gemmeren, Peter; Wenaus, Torre

2015-01-01T23:59:59.000Z

80

Small system for tritium accelerator mass spectrometry  

DOE Patents [OSTI]

Apparatus for ionizing and accelerating a sample containing isotopes of hydrogen and detecting the ratios of hydrogen isotopes contained in the sample is disclosed. An ion source generates a substantially linear ion beam including ions of tritium from the sample. A radio-frequency quadrupole accelerator is directly coupled to and axially aligned with the source at an angle of substantially zero degrees. The accelerator accelerates species of the sample having different mass to different energy levels along the same axis as the ion beam. A spectrometer is used to detect the concentration of tritium ions in the sample. In one form of the invention, an energy loss spectrometer is used which includes a foil to block the passage of hydrogen, deuterium and .sup.3 He ions, and a surface barrier or scintillation detector to detect the concentration of tritium ions. In another form of the invention, a combined momentum/energy loss spectrometer is used which includes a magnet to separate the ion beams, with Faraday cups to measure the hydrogen and deuterium and a surface barrier or scintillation detector for the tritium ions.

Roberts, Mark L. (Livermore, CA); Davis, Jay C. (Livermore, CA)

1993-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "accelerator system atlas" 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.


81

Small system for tritium accelerator mass spectrometry  

DOE Patents [OSTI]

Apparatus for ionizing and accelerating a sample containing isotopes of hydrogen and detecting the ratios of hydrogen isotopes contained in the sample is disclosed. An ion source generates a substantially linear ion beam including ions of tritium from the sample. A radio-frequency quadrupole accelerator is directly coupled to and axially aligned with the source at an angle of substantially zero degrees. The accelerator accelerates species of the sample having different mass to different energy levels along the same axis as the ion beam. A spectrometer is used to detect the concentration of tritium ions in the sample. In one form of the invention, an energy loss spectrometer is used which includes a foil to block the passage of hydrogen, deuterium and [sup 3]He ions, and a surface barrier or scintillation detector to detect the concentration of tritium ions. In another form of the invention, a combined momentum/energy loss spectrometer is used which includes a magnet to separate the ion beams, with Faraday cups to measure the hydrogen and deuterium and a surface barrier or scintillation detector for the tritium ions.

Roberts, M.L.; Davis, J.C.

1993-02-23T23:59:59.000Z

82

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.

83

E-Print Network 3.0 - accelerator elektroniczny system Sample...  

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

systems Michael J... - based systems that emphasize computation on accelerators (rather than on general purpose cores) should... in these accelerator-based...

84

E-Print Network 3.0 - accelerator-driven system ads Sample Search...  

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

Systems (ADS) or Accelerator-Driven Transmutation of Wastes (ATW), integrate a subcritical... forms from ADS. 5. Conclusions Accelerator-Driven Systems open new possibilities...

85

A new tool for accelerator system modeling and analysis  

SciTech Connect (OSTI)

A novel computer code is being developed to generate system level designs of radiofrequency ion accelerators. The goal of the Accelerator System Model (ASM) code is to create a modeling and analysis tool that is easy to use, automates many of the initial design calculations, supports trade studies used in assessing alternate designs and yet is flexible enough to incorporate new technology concepts as they emerge. Hardware engineering parameters and beam dynamics are modeled at comparable levels of fidelity. Existing scaling models of accelerator subsystems were sued to produce a prototype of ASM (version 1.0) working within the Shell for Particle Accelerator Related Codes (SPARC) graphical user interface. A small user group has been testing and evaluating the prototype for about a year. Several enhancements and improvements are now being developed. The current version (1.1) of ASM is briefly described and an example of the modeling and analysis capabilities is illustrated.

Gillespie, G.H.; Hill, B.W. [G.H. Gillespie Associates, Inc., Del Mar, CA (United States); Jameson, R.A. [Los Alamos National Lab., NM (United States)

1994-09-01T23:59:59.000Z

86

Communication channel of fermionic system in accelerated frame  

E-Print Network [OSTI]

In this article, we investigate the communication channel of fermionic system in an accelerated frame. We observe that at the infinite acceleration, the mutual information of single rail quantum channel coincides with that of double rail quantum channel, but those of classical ones reach different values. Furthermore, we find that at the infinite acceleration, the conditional entropy of single(or double) rail quantum channel vanishes, but those of classical ones may have finite values. In addition, we see that even when considering a method beyond the single mode approximation, the dual rail entangled state seems to provide better channel capacity than the single rail entangled state, unlike the bosonic case. Moreover, we find that the single-mode approximation is not sufficient to analyze the communication channel of fermionic system in an accelerated frame.

Jinho Chang; Younghun Kwon

2012-06-28T23:59:59.000Z

87

Accelerating the transformation of power systems  

E-Print Network [OSTI]

-connected variable renewable energy (primarily, wind and solar). All power systems have some inherent level to achieve. Both wind and solar generation output vary significantly over the course of hours to days with wind energy in the system. Solar energy will cause qualitatively similar impacts on the power system

88

E-Print Network 3.0 - accelerator controls system Sample Search...  

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

Accelerator Test Facility (ATF) Summary: ., Vista Control Systems, Omega-P Inc., STI Optronics, TR Research Inc. Universities: Catholic U., U... FACTS Accelerator Test Facility...

89

E-Print Network 3.0 - accelerator-driven systems fast Sample...  

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

- so called Accelerator-Driven System (ADS). An external neutron source and subcritical operation open... view of an Accelerator-Driven Transmutation ... Source: Royal...

90

E-Print Network 3.0 - accelerator-driven sub-critical system...  

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

- so called Accelerator-Driven System (ADS). An external neutron source and subcritical operation open... view of an Accelerator-Driven Transmutation ... Source: Royal...

91

(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

92

The first disaggregated solar atlas of Djibouti: a decision-making tool for solar systems integration in the energy scheme  

E-Print Network [OSTI]

network and the use of classical energy resources presents economical and environmental problems. As many power systems using renewable energies, including solar systems, in order to overcome power supply the total yearly energy consumption of the country in 2005. With the first solar atlas of Djibouti

Paris-Sud XI, Université de

93

Accelerated maximum likelihood parameter estimation for stochastic biochemical systems  

E-Print Network [OSTI]

as: Daigle et al. : Accelerated maximum likelihood parame-Gillespie DT: Approximate accelerated stochastic simulationARTICLE Open Access Accelerated maximum likelihood parameter

Daigle, Bernie J; Roh, Min K; Petzold, Linda R; Niemi, Jarad

2012-01-01T23:59:59.000Z

94

Solar energy potential atlas for planning energy system off-grid electrification in the Republic of Djibouti  

E-Print Network [OSTI]

1 Solar energy potential atlas for planning energy system off-grid electrification in the Republic solar resource can therefore be an interesting mean to produce energy where it is consumed. The aimWh/m². Furthermore, the solar radiation reaching Djibouti corresponded to 20 000 times the total yearly energy

Boyer, Edmond

95

Reliable-linac design for accelerator-driven subcritical reactor systems.  

SciTech Connect (OSTI)

Accelerator reliability corresponding to a very low frequency of beam interrupts is an important new accelerator requirement for accelerator-driven subcritical reactor systems. In this paper we review typical accelerator-reliability requirements and discuss possible methods for meeting these goals with superconducting proton-linac technology.

Wangler, Thomas P.,

2002-01-01T23:59:59.000Z

96

ENABLING SYSTEMS THINKING TO ACCELERATE THE DEVELOPMENT OF SENIOR SYSTEMS ENGINEERS  

E-Print Network [OSTI]

ENABLING SYSTEMS THINKING TO ACCELERATE THE DEVELOPMENT OF SENIOR SYSTEMS ENGINEERS by Heidi Leoti of Cincinnati SUBMITTED TO THE ENGINEERING SYSTEMS DIVISION IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY IN ENGINEERING SYSTEMS AT THE MASSACHUSETTS INSTITUTE OF TECHNOLOGY

de Weck, Olivier L.

97

E-Print Network 3.0 - accelerator-driven subcritical systems...  

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

subcritical systems Search Powered by Explorit Topic List Advanced Search Sample search results for: accelerator-driven subcritical systems Page: << < 1 2 3 4 5 > >> 1 Reprinted...

98

Novel Approach to Linear Accelerator Superconducting Magnet System  

SciTech Connect (OSTI)

Superconducting Linear Accelerators include a superconducting magnet system for particle beam transportation that provides the beam focusing and steering. This system consists of a large number of quadrupole magnets and dipole correctors mounted inside or between cryomodules with SCRF cavities. Each magnet has current leads and powered from its own power supply. The paper proposes a novel approach to magnet powering based on using superconducting persistent current switches. A group of magnets is powered from the same power supply through the common, for the group of cryomodules, electrical bus and pair of current leads. Superconducting switches direct the current to the chosen magnet and close the circuit providing the magnet operation in a persistent current mode. Two persistent current switches were fabricated and tested. In the paper also presented the results of magnetic field simulations, decay time constants analysis, and a way of improving quadrupole magnetic center stability. Such approach substantially reduces the magnet system cost and increases the reliability.

Kashikhin, Vladimir; /Fermilab

2011-11-28T23:59:59.000Z

99

E-Print Network 3.0 - atlas magnet system Sample Search Results  

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

J... , and S.M. Younger Los Alamos National Laboratory Los Alamos, NM. 87545 Abstract Atlas is a facility being... . The capacitor bank design consists of a 36-MJ array of...

100

Operating Systems Should Manage Accelerators Sankaralingam Panneerselvam and Michael M. Swift  

E-Print Network [OSTI]

Operating Systems Should Manage Accelerators Sankaralingam Panneerselvam and Michael M. Swift The inexorable demand for computing power has lead to increas- ing interest in accelerator-based designs. An accelerator is spe- cialized hardware unit that can perform a set of tasks with much higher performance

Swift, Michael

Note: This page contains sample records for the topic "accelerator system atlas" 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

Argonne Tandem Linac Accelerator System (ATLAS) | U.S. DOE Office of  

Office of Science (SC) Website

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched5 Industrial CarbonArticlesHumanJune 2008 Basic Energy Sciences (BES)Argonne

102

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...

103

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...

104

An Accelerated Recursive Doubling Algorithm for Block Tridiagonal Systems  

SciTech Connect (OSTI)

Block tridiagonal systems of linear equations arise in a wide variety of scientific and engineering applications. Recursive doubling algorithm is a well-known prefix computation-based numerical algorithm that requires O(M^3(N/P + log P)) work to compute the solution of a block tridiagonal system with N block rows and block size M on P processors. In real-world applications, solutions of tridiagonal systems are most often sought with multiple, often hundreds and thousands, of different right hand sides but with the same tridiagonal matrix. Here, we show that a recursive doubling algorithm is sub-optimal when computing solutions of block tridiagonal systems with multiple right hand sides and present a novel algorithm, called the accelerated recursive doubling algorithm, that delivers O(R) improvement when solving block tridiagonal systems with R distinct right hand sides. Since R is typically about 100 1000, this improvement translates to very significant speedups in practice. Detailed complexity analyses of the new algorithm with empirical confirmation of runtime improvements are presented. To the best of our knowledge, this algorithm has not been reported before in the literature.

Seal, Sudip K [ORNL] [ORNL

2014-01-01T23:59:59.000Z

105

RFQ (radio-frequency quadrupole) accelerator tuning system  

DOE Patents [OSTI]

A cooling system is provided for maintaining a preselected operating temperature in a device, which may be an RFQ accelerator, having a variable heat removal requirement, by circulating a cooling fluid through a cooling system remote from the device. Internal sensors in the device enable an estimated error signal to be generated from parameters which are indicative of the heat removal requirement from the device. Sensors are provided at predetermined locations in the cooling system for outputting operational temperature signals. Analog and digital computers define a control signal functionally related to the temperature signals and the estimated error signal, where the control signal is defined effective to return the device to the preselected operating temperature in a stable manner. The cooling system includes a first heat sink responsive to a first portion of the control signal to remove heat from a major portion of the circulating fluid. A second heat sink is responsive to a second portion of the control to remove heat from a minor portion of the circulating fluid. The cooled major and minor portions of the circulating fluid are mixed in responsive to a mixing portion of the control signal, which is effective to proportion the major and minor portions of the circulating fluid to establish a mixed fluid temperature which is effective to define the preselected operating temperature for the remote device. 3 figs., 2 tabs.

Bolie, V.W.

1988-04-12T23:59:59.000Z

106

Modified Accelerated Cost-Recovery System (MACRS) + Bonus Depreciation (2008-2012)  

Broader source: Energy.gov [DOE]

Under the federal Modified Accelerated Cost-Recovery System (MACRS), businesses may recover investments in certain property through depreciation deductions. The MACRS establishes a set of class...

107

E-Print Network 3.0 - accelerator-driven system prototype Sample...  

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

Systems (ADS) or Accelerator-Driven Transmutation of Wastes (ATW), integrate a subcritical... . A schematic view of an ... Source: Royal Institute of Technology (Sweden),...

108

E-Print Network 3.0 - accelerator-driven systems programme Sample...  

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

Systems (ADS) or Accelerator-Driven Transmutation of Wastes (ATW), integrate a subcritical... . A schematic view of an ... Source: Royal Institute of Technology (Sweden),...

109

THE POWER SUPPLY SYSTEM FOR THE ACCELERATING COLUMN OF THE 2 MEV ELECTRON COOLER FOR COSY  

E-Print Network [OSTI]

a high-energy electron beam. The power supply for the accelerating column of the electron cooling systemTHE POWER SUPPLY SYSTEM FOR THE ACCELERATING COLUMN OF THE 2 MEV ELECTRON COOLER FOR COSY D controlled voltage source for 60 kV, 1mA and an additional supply for the solenoids of the magnetic system

Kozak, Victor R.

110

A Framework for a General Purpose Intelligent Control System for Particle Accelerators. Phase II Final Report  

SciTech Connect (OSTI)

Vista Control Systems, Inc. has developed a portable system for intelligent accelerator control. The design is general in scope and is thus configurable to a wide range of accelerator facilities and control problems. The control system employs a multi-layer organization in which knowledge-based decision making is used to dynamically configure lower level optimization and control algorithms.

Dr. Robert Westervelt; Dr. William Klein; Dr. Michael Kroupa; Eric Olsson; Rick Rothrock

1999-06-28T23:59:59.000Z

111

Distributed analysis in ATLAS  

E-Print Network [OSTI]

The ATLAS experiment accumulated more than 140 PB of data during the first run of the Large Hadron Collider (LHC) at CERN. The analysis of such an amount of data for the distributed physics community is a challenging task. The Distributed Analysis (DA) system of the ATLAS experiment is an established and stable component of the ATLAS distributed computing operations. About half a million user jobs are daily running on DA resources, submitted by more than 1500 ATLAS physicists. The reliability of the DA system during the first run of the LHC and the following shutdown period has been high thanks to the continuous automatic validation of the distributed analysis sites and the user support provided by a dedicated team of expert shifters. During the LHC shutdown, the ATLAS computing model has undergone several changes to improve the analysis workflows, including the re-design of the production system, a new analysis data format and event model, and the development of common reduction and analysis frameworks. We r...

Dewhurst, Alastair; The ATLAS collaboration

2015-01-01T23:59:59.000Z

112

Systems and methods for cylindrical hall thrusters with independently controllable ionization and acceleration stages  

DOE Patents [OSTI]

Systems and methods may be provided for cylindrical Hall thrusters with independently controllable ionization and acceleration stages. The systems and methods may include a cylindrical channel having a center axial direction, a gas inlet for directing ionizable gas to an ionization section of the cylindrical channel, an ionization device that ionizes at least a portion of the ionizable gas within the ionization section to generate ionized gas, and an acceleration device distinct from the ionization device. The acceleration device may provide an axial electric field for an acceleration section of the cylindrical channel to accelerate the ionized gas through the acceleration section, where the axial electric field has an axial direction in relation to the center axial direction. The ionization section and the acceleration section of the cylindrical channel may be substantially non-overlapping.

Diamant, Kevin David; Raitses, Yevgeny; Fisch, Nathaniel Joseph

2014-05-13T23:59:59.000Z

113

Transmutation of nuclear waste in accelerator-driven systems  

E-Print Network [OSTI]

Today more than ever energy is not only a cornerstone of human development, but also a key to the environmental sustainability of economic activity. In this context, the role of nuclear power may be emphasized in the years to come. Nevertheless, the problems of nuclear waste, safety and proliferation still remain to be solved. It is believed that the use of accelerator-driven systems (ADSs) for nuclear waste transmutation and energy production would address these problems in a simple, clean and economically viable, and therefore sustainable, manner. This thesis covers the major nuclear physics aspects of ADSs, in particular the spallation process and the core neutronics specific to this type of systems. The need for accurate nuclear data is described, together with a detailed analysis of the specific isotopes and energy ranges in which this data needs to be improved and the impact of their uncertainty. Preliminary experimental results for some of these isotopes, produced by the Neutron Time-of-Flight (n_TOF) ...

Herrera-Martnez, A

2004-01-01T23:59:59.000Z

114

E-Print Network 3.0 - atlas prototype daq Sample Search Results  

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

part of the overall ATLAS DAQ system. In the presentation... . ROD sends data to the ATLAS central DAQ facility in the end. The functionality, validity... , The Netherlands...

115

Feasibility Study of Accelerator Driven System Proposed by JAEA  

SciTech Connect (OSTI)

Accelerator Driven System (ADS) has been studied to transmute minor actinides (MA) discharged from spent fuel of commercial nuclear power plants. In Japan Atomic Energy Agency (JAEA), various R and D for an 800 MWt, lead bismuth eutectic (LBE) cooled ADS have been performed. The feasibility for the ADS is discussed in the present study in terms of the neutronics design, the safety analysis and the design of the beam window. In the neutronics design, the maximum temperature at the surface of the fuel pin was decreased from 578 deg. C to 498 deg. C by the adjustment of the ZrN inert matrix ratio for four zones. In the safety analysis, it was confirmed that there was very little possibility of core disruptive accidents at unprotected accidents in the ADS proposed by JAEA. For the design of the beam window, the parametric survey for the buckling failure was performed to discuss the methods to increase the margin for the buckling pressure. (authors)

Sugawara, Takanori; Nishihara, Kenji; Tsujimoto, Kazufumi; Iwanaga, Kohei; Kurata, Yuji; Sasa, Toshinobu; Oigawa, Hiroyuki [Japan Atomic Energy Agency: 2-4 Shirakata-shirane Tokai-Mura, Ibaraki, 319-1195 (Japan)

2007-07-01T23:59:59.000Z

116

Disposition of Nuclear Waste Using Subcritical Accelerator-Driven Systems  

SciTech Connect (OSTI)

ATW destroys virtually all the plutonium and higher actinides without reprocessing the spent fuel in a way that could lead to weapons material diversion. An ATW facility consists of three major elements: (1) a high-power proton linear accelerator; (2) a pyrochemical spent fuel treatment i waste cleanup system; (3) a liquid lead-bismuth cooled burner that produces and utilizes an intense source-driven neutron flux for transmutation in a heterogeneous (solid fuel) core. The concept is the result of many years of development at LANL as well as other major international research centers. Once demonstrated and developed, ATW could be an essential part of a global non-proliferation strategy for countries that could build up large quantities of plutonium from their commercial reactor waste. ATW technology, initially proposed in the US, has received wide and rapidly increasing attention abroad, especially in Europe and the Far East with major programs now being planned, organized and tided. Substantial convergence presently exists on the technology choices among the programs, opening the possibility of a strong and effective international collaboration on the phased development of the ATW technology.

Doolen, G.D.; Venneri, F.; Li, N.; Williamson, M.A.; Houts, M.; Lawrence, G.

1998-06-27T23:59:59.000Z

117

Validation of Danish wind time series from a new global renewable energy atlas for energy system analysis  

E-Print Network [OSTI]

We present a new global high-resolution renewable energy atlas (REatlas) that can be used to calculate customised hourly time series of wind and solar PV power generation. In this paper, the atlas is applied to produce 32-year-long hourly model wind power time series for Denmark for each historical and future year between 1980 and 2035. These are calibrated and validated against real production data from the period 2000 to 2010. The high number of years allows us to discuss how the characteristics of Danish wind power generation varies between individual weather years. As an example, the annual energy production is found to vary by $\\pm10\\%$ from the average. Furthermore, we show how the production pattern change as small onshore turbines are gradually replaced by large onshore and offshore turbines. In most energy system analysis tools, fixed hourly time series of wind power generation are used to model future power systems with high penetrations of wind energy. Here, we compare the wind power time series fo...

Andresen, Gorm Bruun; Greiner, Martin

2014-01-01T23:59:59.000Z

118

AT2 DS II - Accelerator System Design (Part II) - CCC Video Conference  

SciTech Connect (OSTI)

Discussion Session - Accelerator System Design (Part II) Tutors: C. Darve, J. Weisend II, Ph. Lebrun, A. Dabrowski, U. Raich Video Conference with the CERN Control Center. Experts in the field of Accelerator science will be available to answer the students questions. This session will link the CCC and SA (using Codec VC).

None

2010-12-17T23:59:59.000Z

119

AT2 DS II - Accelerator System Design (Part II) - CCC Video Conference  

ScienceCinema (OSTI)

Discussion Session - Accelerator System Design (Part II) Tutors: C. Darve, J. Weisend II, Ph. Lebrun, A. Dabrowski, U. Raich Video Conference with the CERN Control Center. Experts in the field of Accelerator science will be available to answer the students questions. This session will link the CCC and SA (using Codec VC).

None

2011-10-06T23:59:59.000Z

120

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

Note: This page contains sample records for the topic "accelerator system atlas" 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

Application of JLab 12GeV helium refrigeration system for the FRIB accelerator at MSU  

SciTech Connect (OSTI)

The planned approach to have a turnkey helium refrigeration system for the MSU-FRIB accelerator system, encompassing the design, fabrication, installation and commissioning of the 4.5-K refrigerator cold box(es), cold compression system, warm compression system, gas management, oil removal and utility/ancillary systems, was found to be cost prohibitive. Following JLabs suggestion, MSU-FRIB accelerator management made a formal request to evaluate the applicability of the recently designed 12GeV JLab cryogenic system for this application. The following paper will outline the findings and the planned approach for the FRIB helium refrigeration system.

Ganni, V.; Knudsen, P.; Arenius, D. [Thomas Jefferson National Accelerator Facility, Newport News, VA 23606 (United States); Casagrande, F. [MSU-FRIB, East Lansing, MI 48824 (United States)

2014-01-29T23:59:59.000Z

122

accelerator-driven transmutation system: Topics by E-print Network  

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

plan is considered Yu Qi; Ouyang Hua Fu; Xu Tao Guang 2001-01-01 7 Thorium as a Fuel for Accelerator Driven Subcritical Electronuclear Systems CERN Preprints Summary:...

123

accelerator-driven transmutation systems: Topics by E-print Network  

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

plan is considered Yu Qi; Ouyang Hua Fu; Xu Tao Guang 2001-01-01 7 Thorium as a Fuel for Accelerator Driven Subcritical Electronuclear Systems CERN Preprints Summary:...

124

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

125

Direct measurement of the cosmic acceleration by 21cm absorption systems  

E-Print Network [OSTI]

So far there is only indirect evidence that the universe is undergoing an accelerated expansion. The evidence for cosmic acceleration is based on the observation of different objects at different distances, and requires invoking the Copernican cosmological principle, and Einstein's equations of motion. We examine the direct observability using recession velocity drifts (Sandage-Loeb effect) of 21cm hydrogen absorption systems in upcoming radio surveys. This measures the change in velocity of the {\\it same} objects separate by a time interval and is a model-independent measure of acceleration. We forecast that for a CHIME-like survey with a decade time span, we can detect the acceleration of a $\\Lambda$CDM universe with $\\sim 6\\sigma$ confidence. This acceleration test requires modest data analysis and storage changes from the normal processing, and cannot be recovered retroactively.

Yu, Hao-Ran; Pen, Ue-Li

2013-01-01T23:59:59.000Z

126

Commissioning of the ATLAS pixel detector  

SciTech Connect (OSTI)

The ATLAS pixel detector is a high precision silicon tracking device located closest to the LHC interaction point. It belongs to the first generation of its kind in a hadron collider experiment. It will provide crucial pattern recognition information and will largely determine the ability of ATLAS to precisely track particle trajectories and find secondary vertices. It was the last detector to be installed in ATLAS in June 2007, has been fully connected and tested in-situ during spring and summer 2008, and is ready for the imminent LHC turn-on. The highlights of the past and future commissioning activities of the ATLAS pixel system are presented.

ATLAS Collaboration; Golling, Tobias

2008-09-01T23:59:59.000Z

127

Advanced Klystrons for High Efficiency Accelerator Systems - Final Report  

SciTech Connect (OSTI)

This program explored tailoring of RF pulses used to drive accelerator cavities. Simulations indicated that properly shaping the pulse risetime to match accelerator cavity characteristics reduced reflected power and increased total efficiency. Tailoring the pulse requires a high power, gridded, klystron to shape the risetime while also controlling the beam current. The Phase I program generated a preliminary design of a gridded electron gun for a klystron producing 5-10 MW of RF power. This required design of a segmented cathode using Controlled Porosity Reservoir cathodes to limit power deposition on the grid. The program was successful in computationally designing a gun producing a high quality electron beam with grid control. Additional analysis of pulse tailoring indicated that technique would only be useful for cavity drive pulses that were less than approximately 2-3 times the risetime. Otherwise, the efficiency gained during the risetime of the pulse became insignificant when considering the efficiency over the entire pulse. Consequently, it was determined that a Phase II program would not provide sufficient return to justify the cost. Never the less, other applications for a high power gridded gun are currently being pursued. This klystron, for example, would facilitate development inverse Comptom x-ray sources by providing a high repetition rate (10 -100 kHz) RF source.

Read, Michael; Ives, Robert Lawrence

2014-03-26T23:59:59.000Z

128

Disposition of nuclear waste using subcritical accelerator-driven systems  

SciTech Connect (OSTI)

Spent fuel from nuclear power plants contains large quantities of Pu, other actinides, and fission products (FP). This creates challenges for permanent disposal because of the long half-lives of some isotopes and the potential for diversion of the fissile material. Two issues of concern for the US repository concept are: (1) long-term radiological risk peaking tens-of-thousands of years in the future; and (2) short-term thermal loading (decay heat) that limits capacity. An accelerator-driven neutron source can destroy actinides through fission, and can convert long-lived fission products to shorter-lived or stable isotopes. Studies over the past decade have established that accelerator transmutation of waste (ATW) can have a major beneficial impact on the nuclear waste problem. Specifically, the ATW concept the authors are evaluating: (1) destroys over 99.9% of the actinides; (2) destroys over 99.9% of the Tc and I; (3) separates Sr-90 and Cs-137; (4) separates uranium from the spent fuel; (5) produces electric power.

Venneri, F.; Li, N.; Williamson, M.; Houts, M.; Lawrence, G.

1998-12-31T23:59:59.000Z

129

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

130

On designing a control system for a new generation of accelerators  

SciTech Connect (OSTI)

A well-conceived plan of attack is essential to the task of designing a control system for a large accelerator. Several aspects of such a plan have been investigated during recent work at LAMPF on design strategies for an Advanced Hadron Facility control system. Aspects discussed in this paper include: identification of requirements, creation and enforcement of standards, interaction with users, consideration of commercial controls products, integration with existing control systems, planning for continual change, and establishment of design reviews. We emphasize the need for the controls group to acquire and integrate accelerator design information from the start of the design process. We suggest that a controls design for a new generation of accelerators be done with a new generation of software tools. 12 refs.

Schaller, S.C.; Schultz, D.E.

1987-01-01T23:59:59.000Z

131

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

132

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

133

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

134

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

135

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

136

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

137

accelerator control system: Topics by E-print Network  

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

control system is largely based on standard industrial hardware and software components. SIEMENS Simatic S7-300 programmable logic controllers have been used as equipment...

138

accelerator control systems: Topics by E-print Network  

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

control system is largely based on standard industrial hardware and software components. SIEMENS Simatic S7-300 programmable logic controllers have been used as equipment...

139

Dynamics of connected vehicle systems with delayed acceleration feedback  

E-Print Network [OSTI]

predecessor is measured by radar and the vehicle is actuated accordingly. Since the delay in these systems conclusions are verified by simulations at the nonlinear level. ? 2014 Elsevier Ltd. All rights reserved. 1 limited ability to change the dynamics at the system level, which is necessary if one wishes to eliminate

Daly, Samantha

140

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

Note: This page contains sample records for the topic "accelerator system atlas" 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

Warming systems prolong steam-turbine life, accelerate startup  

SciTech Connect (OSTI)

Cycling capability is one of the top challenges in the design, operation, and maintenance of today's powerplants. This article describes how permanent warming systems can be a powerful ally in meeting this challenge, particularly for aging steam turbines. The warming system is typically used to hold steam-turbine shell temperatures during short shutdowns (up to about three days), or to pre-warm shells after longer shut-downs. Permanent warming systems elevate metal temperature above 500 F, distinguishing them from heat tracing systems that operate at much lower temperatures for freeze protection or viscosity control. Permanent warming systems can reduced steam-turbine damage during both startup heating and off-line cooling, and can reduce plant startup time.

Swanekamp, R.

1994-08-01T23:59:59.000Z

142

Entanglement behavior of quantum states of fermionic system in accelerated frame  

E-Print Network [OSTI]

In this article we investigate the entanglement behavior of quantum states of fermionic system in accelerated frame. It was known that unlike scalar case the entanglement of fermionic maximally entangled states survives even in the infinite acceleration limit. Also for the fermionic system it was discussed that one may consider the approach beyond single mode approximation. However due to the peculiar property of fermionic system there has been different opinions about correct physical structure of fermionic system. Recently Montero and Mart\\'{i}n-Mart\\'{i}nez suggested an approach beyond single mode approximation. Using the structure proposed by Montero and Mart\\'{i}n-Mart\\'{i}nez we investigate the entanglement behavior of quantum states of fermionic system in accelerated frame. We find that the approach by Montero and Mart\\'{i}n-Mart\\'{i}nez seems to work appropriately. Also we may obtain the proper entanglement behavior of quantum states in fermionic system in accelerated frame(our result may correct the previous results published in Phys.Rev.A 83 052306).

Jinho Chang; Younghun Kwon

2011-12-15T23:59:59.000Z

143

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

144

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

145

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

146

Development of an RF Conditioning System for Charged-Particle Accelerators  

SciTech Connect (OSTI)

Charged-particle accelerators use various vacuum windows on their accelerating radio-frequency (RF) cavities to throughput very high RF power. Before being placed on the cavities, the windows should be cleaned, baked, and fully RF conditioned to prevent a poor vacuum from outgassing, as well as other forms of contamination. An example is the coaxial fundamental power coupler (FPC) with an annular alumina ceramic window for each of the 81 superconducting RF cavities in the Spallation Neutron Source (SNS) linear accelerator. The FPCs needed to be tested up to 650-kW peak in a traveling wave and 2.6 MW with standing wave peaks in 1.3 and 60 pulses/s at 805 MHz. In this paper, an Experimental-Physics-and-Industrial-Control-System-based RF conditioning system for the SNS RF test facility is presented. This paper summarizes the hardware and software design strategies, provides the results obtained, and describes the future research scope.

Kang, Yoon W [ORNL; Howlader, Mostofa [ORNL; Shajedul Hasan, Dr. S. M. [Virginia Polytechnic Institute and State University (Virginia Tech)

2008-01-01T23:59:59.000Z

147

Geometric discord of quantum states of fermionic system in accelerated frame  

E-Print Network [OSTI]

In this article, we investigate the geometric discord of quantum states of fermionic system in accelerated frame. It is shown by the method beyond the single-mode approximation, depending on the region considered, that the geometric discord for the entangled quantum states of fermionic system in accelerated frame can vanish or be retained at the infinite acceleration limit: it does not disappear when the quantum state of the particle(Alice)-particle(Bob in region I) case or the particle(Alice)-antiparticle(Bob in region II) is considered and it disappears when the particle(Alice)-antiparticle(Bob in region I) case or the particle(Alice)-particle(Bob in region II) one is considered.

Jinho Chang; L. C. Kwek; Younghun Kwon

2012-10-05T23:59:59.000Z

148

Protecting Accelerator Control Systems in the Face of Sophisticated Cyber Attacks  

SciTech Connect (OSTI)

Cyber security for industrial control systems has received significant attention in the past two years. The news coverage of the Stuxnet attack, believed to be targeted at the control system for a uranium enrichment plant, brought the issue to the attention of news media and policy makers. This has led to increased scrutiny of control systems for critical infrastructure such as power generation and distribution, and industrial systems such as chemical plants and petroleum refineries. The past two years have also seen targeted network attacks aimed at corporate and government entities including US Department of Energy National Laboratories. Both of these developments have potential repercussions for the control systems of particle accelerators. The need to balance risks from potential attacks with the operational needs of an accelerator present a unique challenge for the system architecture and access model.

Hartman, Steven M [ORNL] [ORNL

2012-01-01T23:59:59.000Z

149

WESTCARB Carbon Atlas  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

The West Coast Regional Carbon Sequestration Partnership (known as WESTCARB) was established in Fall 2003. It is one of seven research partnerships co-funded by DOE to characterize regional carbon sequestration opportunities and conduct pilot-scale validation tests. The California Energy Commission manages WESTCARB and is a major co-funder. WESTCARB is characterizing the extent and capacity of geologic formations capable of storing CO2, known as sinks. Results are entered into a geographic information system (GIS) database, along with the location of major CO2-emitting point sources in each of the six WESTCARB states, enabling researchers and the public to gauge the proximity of candidate CO2 storage sites to emission sources and the feasibility of linking them via pipelines. Specifically, the WESTCARB GIS database (also known as the carbon atlas) stores layers of geologic information about potential underground storage sites, such as porosity and nearby fault-lines and aquifers. Researchers use these data, along with interpreted geophysical data and available oil and gas well logs to estimate the region's potential geologic storage capacity. The database also depicts existing pipeline routes and rights-of-way and lands that could be off-limits, which can aid the development of a regional carbon management strategy. The WESTCARB Carbon Atlas, which is accessible to the public, provides a resource for public discourse on practical solutions for regional CO2 management. A key WESTCARB partner, the Utah Automated Geographic Reference Center, has developed data serving procedures to enable the WESTCARB Carbon Atlas to be integrated with those from other regional partnerships, thereby supporting the U.S. Department of Energy's national carbon atlas, NATCARB

150

Asynchronous data change notification between database server and accelerator controls system  

SciTech Connect (OSTI)

Database data change notification (DCN) is a commonly used feature. Not all database management systems (DBMS) provide an explicit DCN mechanism. Even for those DBMS's which support DCN (such as Oracle and MS SQL server), some server side and/or client side programming may be required to make the DCN system work. This makes the setup of DCN between database server and interested clients tedious and time consuming. In accelerator control systems, there are many well established software client/server architectures (such as CDEV, EPICS, and ADO) that can be used to implement data reflection servers that transfer data asynchronously to any client using the standard SET/GET API. This paper describes a method for using such a data reflection server to set up asynchronous DCN (ADCN) between a DBMS and clients. This method works well for all DBMS systems which provide database trigger functionality. Asynchronous data change notification (ADCN) between database server and clients can be realized by combining the use of a database trigger mechanism, which is supported by major DBMS systems, with server processes that use client/server software architectures that are familiar in the accelerator controls community (such as EPICS, CDEV or ADO). This approach makes the ADCN system easy to set up and integrate into an accelerator controls system. Several ADCN systems have been set up and used in the RHIC-AGS controls system.

Fu, W.; Morris, J.; Nemesure, S.

2011-10-10T23:59:59.000Z

151

Data acquisition system at the RIKEN accelerator facility  

SciTech Connect (OSTI)

This paper describes data acquisition system using J11 CPU (Starburst 2180 ACC) and Micro VAX II. Each event is processed by J11 CPU. Buffered data is transferred to Micro VAX II through Kinetic parallel bus. The executable image on J11 is builded on Micro VAX II using VAX/RSX and down-line loaded via CAMAC dataway.

Ichihara, T.; Inamura, T.; Wada, T.; Ishihara, M. (RIKEN Accelerator facility 2-1, Hirosawa, Wako, 351-01 (JP))

1989-10-01T23:59:59.000Z

152

Entanglement amplification of fermionic systems in an accelerated frame  

E-Print Network [OSTI]

In this article we present an analysis to derive physical results in the entanglement amplification of fermonic systems in the relativistic regime, that is, beyond the single-mode approximation. This leads a recent work in [M. Montero and E. Mart\\'{i}n-Mart\\'{i}nez, JEHP 07 (2011) 006] to a physical result, and solidifies that phenomenon of entanglement amplification can actually happen in the relativistic regime.

Younghun Kwon; Jinho Chang

2012-05-03T23:59:59.000Z

153

Accelerating Acceptance of Fuel Cell Backup Power Systems - Final Report  

SciTech Connect (OSTI)

Since 2001, Plug Power has installed more than 800 stationary fuel cell systems worldwide. Plug Powers prime power systems have produced approximately 6.5 million kilowatt hours of electricity and have accumulated more than 2.5 million operating hours. Intermittent, or backup, power products have been deployed with telecommunications carriers and government and utility customers in North and South America, Europe, the United Kingdom, Japan and South Africa. Some of the largest material handling operations in North America are currently using the companys motive power units in fuel cell-powered forklifts for their warehouses, distribution centers and manufacturing facilities. The low-temperature GenSys fuel cell system provides remote, off-grid and primary power where grid power is unreliable or nonexistent. Built reliable and designed rugged, low- temperature GenSys delivers continuous or backup power through even the most extreme conditions. Coupled with high-efficiency ratings, low-temperature GenSys reduces operating costs making it an economical solution for prime power requirements. Currently, field trials at telecommunication and industrial sites across the globe are proving the advantages of fuel cellslower maintenance, fuel costs and emissions, as well as longer lifecompared with traditional internal combustion engines.

Petrecky, James; Ashley, Christopher

2014-07-21T23:59:59.000Z

154

E-Print Network 3.0 - accelerator-based facility design Sample...  

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

Planning: Assumed to hold flat for next few years. * Proton Accelerator-Based Physics - ATLAS... Facility Department - Linear Collider Department is focused on the design of ......

155

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...

156

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...

157

E-Print Network 3.0 - atlas rpc qualification 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...

158

CERN-US July 1, 2004 Accelerator Systems Plan -S.Peggs 1 bnl fnal -lbnl -slac  

E-Print Network [OSTI]

orders of magnitude speed up Applicable to LHC? #12;CERN-US July 1, 2004 Accelerator Systems Plan - S-CERN Committee, July 1, 2004 #12;CERN-US July 1, 2004 Accelerator Systems Plan - S.Peggs 2 Organization Chart 2

Large Hadron Collider Program

159

HIGH-POWER PRECISION CURRENT SUPPLY IST2-1000M FOR ELEMENTS OF MAGNETIC SYSTEMS OF ACCELERATORS AND  

E-Print Network [OSTI]

HIGH-POWER PRECISION CURRENT SUPPLY IST2-1000M FOR ELEMENTS OF MAGNETIC SYSTEMS OF ACCELERATORS. These supplies are intended to power magnetic systems of accelerators, requiring high stability and low ripples for active suppression of pulsation A/s 100 The Supply consists of two boxes (power box PB and box of filters

Kozak, Victor R.

160

G-NetMon: a GPU-accelerated network performance monitoring system  

SciTech Connect (OSTI)

At Fermilab, we have prototyped a GPU-accelerated network performance monitoring system, called G-NetMon, to support large-scale scientific collaborations. In this work, we explore new opportunities in network traffic monitoring and analysis with GPUs. Our system exploits the data parallelism that exists within network flow data to provide fast analysis of bulk data movement between Fermilab and collaboration sites. Experiments demonstrate that our G-NetMon can rapidly detect sub-optimal bulk data movements.

Wu, Wenji; DeMar, Phil; Holmgren, Don; Singh, Amitoj; /Fermilab

2011-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "accelerator system atlas" 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.


161

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

162

ATLAS Fast Tracker Simulation Challenges  

E-Print Network [OSTI]

To deal with Big Data flood from the ATLAS detector most events have to be rejected in the trigger system. the trigger rejection is complicated by the presence of a large number of minimum-bias events the pileup. To limit pileup effects in the high luminosity environment of the LHC Run-2, ATLAS relies on full tracking provided by the Fast TracKer (FTK) implemented with custom electronics. The FTK data processing pipeline has to be simulated in preparation for LHC upgrades to support electronics design and develop trigger strategies at high luminosity. The simulation of the FTK - a highly parallelized system - has inherent performance bottlenecks on general-purpose CPUs. To take advantage of the Grid Computing power, the FTK simulation is integrated with Monte Carlo simulations at the Production System level above the ATLAS workload management system PanDA. We report on ATLAS experience with FTK simulations on the Grid and next steps for accommodating the growing requirements for resources during the LHC R...

Adelman, Jahred; The ATLAS collaboration; Borodin, Mikhail; Chakraborty, Dhiman; Garca Navarro, Jos Enrique; Golubkov, Dmitry; Kama, Sami; Panitkin, Sergey; Smirnov, Yuri; Stewart, Graeme; Tompkins, Lauren; Vaniachine, Alexandre; Volpi, Guido

2015-01-01T23:59:59.000Z

163

ATLAS Data Access Policy  

E-Print Network [OSTI]

ATLAS has fully supported the principle of open access in its publication policy. This document outlines the policy of ATLAS as regards open access to data at different levels as described in the DPHEP model. The main objective is to make the data available in a usable way to people external to the ATLAS collaboration.

The ATLAS collaboration

2015-01-01T23:59:59.000Z

164

The ATLAS Software Installation System v2: a highly available system to install and validate Grid and Cloud sites via Panda  

E-Print Network [OSTI]

The ATLAS Installation System v2 is the evolution of the original system, used since 2003. The original tool has been completely re-designed in terms of database backend and components, adding support for submission to multiple backends, including the original WMS and the new Panda modules. The database engine has been changed from plain MySQL to Galera/Percona and the table structure has been optimized to allow a full High-Availability (HA) solution over WAN. The servlets, running on each frontend, have been also decoupled from local settings, to allow an easy scalability of the system, including the possibility of an HA system with multiple sites. The clients can also be run in multiple copies and in different geographical locations, and take care of sending the installation and validation jobs to the target Grid or Cloud sites. Moreover, the Installation DB is used as source of parameters by the automatic agents running in CVMFS, in order to install the software and distribute it to the sites. The system i...

De Salvo, Alessandro; The ATLAS collaboration; Smirnov, Yuri; Sanchez, Arturo

2015-01-01T23:59:59.000Z

165

Conceptual configurations of an accelerator-driven subcritical system utilizing minor actinides  

SciTech Connect (OSTI)

This paper purposes an Accelerator-Driven Subcritical (ADS) system which utilizes the Minor Actinides (MAs) from the US spent nuclear fuel inventory. A mobile fuel concept with micro-particles suspended in the liquid metal is adopted in the purposed system to avoid difficulties of developing and testing new MAs solid fuel forms. Three ADS configurations were developed and analyzed using the Monte Carlo fuel burnup methodology. The analyses demonstrated the capabilities of the proposed system to utilize the MAs and to dispose of the US spent nuclear fuels. (authors)

Cao, Y.; Gohar, Y. [Nuclear Engineering Div., Argonne National Laboratory, 9700 South Cass Ave., IL 60439 (United States)

2012-07-01T23:59:59.000Z

166

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

167

A multi-beam, multi-terawatt Ti:sapphire laser system for laser wake-field acceleration studies  

E-Print Network [OSTI]

­plasma interaction studies, such as development of laser wake-field accelerators [1-4], X-ray lasers, and laserA multi-beam, multi-terawatt Ti:sapphire laser system for laser wake-field acceleration studies 71R0259, 1 Cyclotron Rd., Berkeley, CA 94720, USA, e-mail: ctoth@lbl.gov Abstract. The Lasers

Geddes, Cameron Guy Robinson

168

E-Print Network 3.0 - atlas thin gap 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...

169

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...

170

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...

171

Unified system for processing real and simulated data in the ATLAS experiment  

E-Print Network [OSTI]

The physics goals of the next Large Hadron Collider run include high precision tests of the Standard Model and searches for new physics. These goals at the Gates of Nature require detailed comparison of data with computational models simulating the expected data behavior. To highlight the role which modeling and simulation plays in future scientific discovery, we report on use cases and experience with a unified system built to process both real and simulated data of growing volume and variety.

The ATLAS collaboration

2015-01-01T23:59:59.000Z

172

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

173

Accelerators and the Accelerator Community  

E-Print Network [OSTI]

of electrostatic accelerators, while Ernest O. Lawrence (CBP 820 LBNL TBA ACCELERATORS ANDTHE ACCELERATOR COMMUNITY 1 ANDREW SESSLER Lawrence Berkeley

Malamud, Ernest

2009-01-01T23:59:59.000Z

174

Transmutation of {sup 129}I Using an Accelerator-Driven System  

SciTech Connect (OSTI)

A conceptual blanket design for {sup 129}I transmutation is proposed for an accelerator-driven system (ADS) that is designed to transmute minor actinides (MAs). In this ADS, 250 kg/yr of MA and 56 kg/yr of iodine are simultaneously transmuted, and they correspond to the quantities generated from {approx}10 units of existing light water reactors. Furthermore, an introduction scenario and the benefit of iodine transmutation are studied for future introduction of fast breeder reactors. It is shown that the transmutation of iodine benefits the concept of underground disposal.

Nishihara, Kenji; Takano, Hideki [Japan Atomic Energy Research Institute (Japan)

2002-01-15T23:59:59.000Z

175

ATLaS: a Small but Complete SQL Extension for Data Mining and Data Streams  

E-Print Network [OSTI]

ATLaS: a Small but Complete SQL Extension for Data Mining and Data Streams 1 Haixun Wang 2 Carlo and extensibility. We have implemented ATLaS [1], a powerful database language and system that enables users, rather than in procedural languages as in current Object-Relational sys- tems. As a result, ATLaS' SQL

Zaniolo, Carlo

176

A hybrid data acquisition system for magnetic measurements of accelerator magnets  

SciTech Connect (OSTI)

A hybrid data acquisition system was developed for magnetic measurement of superconducting accelerator magnets at LBNL. It consists of a National Instruments dynamic signal acquisition (DSA) card and two Metrolab fast digital integrator (FDI) cards. The DSA card records the induced voltage signals from the rotating probe while the FDI cards records the flux increment integrated over a certain angular step. This allows the comparison of the measurements performed with two cards. In this note, the setup and test of the system is summarized. With a probe rotating at a speed of 0.5 Hz, the multipole coefficients of two magnets were measured with the hybrid system. The coefficients from the DSA and FDI cards agree with each other, indicating that the numerical integration of the raw voltage acquired by the DSA card is comparable to the performance of the FDI card in the current measurement setup.

Wang, X.; Hafalia, R.; Joseph, J.; Lizarazo, J.; Martchevsky, M.; Sabbi, G. L.

2011-06-03T23:59:59.000Z

177

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

178

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

179

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

180

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

Note: This page contains sample records for the topic "accelerator system atlas" 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

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

182

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

183

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

184

The Evolution of Cloud Computing in ATLAS  

E-Print Network [OSTI]

The ATLAS experiment has successfully incorporated cloud computing technology and cloud resources into its primarily grid-based model of distributed computing. Cloud R&D activities continue to mature and transition into stable production systems, while ongoing evolutionary changes are still needed to adapt and refine the approaches used, in response to changes in prevailing cloud technology. In addition, completely new developments are needed to handle emerging requirements. This work will describe the overall evolution of cloud computing in ATLAS. The current status of the VM management systems used for harnessing IAAS resources will be discussed. Monitoring and accounting systems tailored for clouds are needed to complete the integration of cloud resources within ATLAS' distributed computing framework. We are developing and deploying new solutions to address the challenge of operation in a geographically distributed multi-cloud scenario, including a system for managing VM images across multiple clouds, ...

Taylor, Ryan P.; The ATLAS collaboration; Love, Peter; Leblanc, Matthew Edgar; Di Girolamo, Alessandro; Paterson, Michael; Gable, Ian; Sobie, Randall; Field, Laurence

2015-01-01T23:59:59.000Z

185

BNL ATLAS Grid Computing  

ScienceCinema (OSTI)

As the sole Tier-1 computing facility for ATLAS in the United States and the largest ATLAS computing center worldwide Brookhaven provides a large portion of the overall computing resources for U.S. collaborators and serves as the central hub for storing,

Michael Ernst

2010-01-08T23:59:59.000Z

186

Pyrochemical separations technologies envisioned for the U. S. accelerator transmutation of waste system  

SciTech Connect (OSTI)

A program has been initiated for the purpose of developing the chemical separations technologies necessary to support a large Accelerator Transmutation of Waste (ATW) system capable of dealing with the projected inventory of spent fuel from the commercial nuclear power stations in the United States. The baseline process selected combines aqueous and pyrochemical processes to enable the efficient separation of uranium, technetium, iodine, and the transuranic elements from LWR spent fuel. The diversity of processing methods was chosen for both technical and economic factors. A six-year technology evaluation and development program is foreseen, by the end of which an informed decision can be made on proceeding with demonstration of the ATW system.

Laidler, J. J.

2000-02-17T23:59:59.000Z

187

ATLAS Virtual Visits  

E-Print Network [OSTI]

ATLAS Virtual Visits is a project initiated in 2011 for the Education & Outreach program of the ATLAS Experiment at CERN. Its goal is to promote public appreciation of the LHC physics program and particle physics, in general, through direct dialogue between ATLAS physicists and remote audiences. A Virtual Visit is an IP-based videoconference, coupled with a public webcast and video recording, between ATLAS physicists and remote locations around the world, that typically include high school or university classrooms, Masterclasses, science fairs, or other special events, usually hosted by collaboration members. Over the past two years, more than 10,000 people, from all of the worlds continents, have actively participated in ATLAS Virtual Visits, with many more enjoying the experience from the publicly available webcasts and recordings. We present an overview of our experience and discuss potential development for the future.

Goldfarb, Steven; The ATLAS collaboration

2015-01-01T23:59:59.000Z

188

E-Print Network 3.0 - atlas pixels running 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 pixels running Page: << < 1 2 3 4 5 > >> 1 ATLAS ATLAS ATLAS ATLAS Summary: ATLAS...

189

AGS SUPER NEUTRINO BEAM FACILITY ACCELERATOR AND TARGET SYSTEM DESIGN (NEUTRINO WORKING GROUP REPORT-II).  

SciTech Connect (OSTI)

This document describes the design of the accelerator and target systems for the AGS Super Neutrino Beam Facility. Under the direction of the Associate Laboratory Director Tom Kirk, BNL has established a Neutrino Working Group to explore the scientific case and facility requirements for a very long baseline neutrino experiment. Results of a study of the physics merit and detector performance was published in BNL-69395 in October 2002, where it was shown that a wide-band neutrino beam generated by a 1 MW proton beam from the AGS, coupled with a half megaton water Cerenkov detector located deep underground in the former Homestake mine in South Dakota would be able to measure the complete set of neutrino oscillation parameters: (1) precise determination of the oscillation parameters {Delta}m{sub 32}{sup 2} and sin{sup 2} 2{theta}{sub 32}; (2) detection of the oscillation of {nu}{sub {mu}}-{nu}{sub e} and measurement of sin{sup 2} 2{theta}{sub 13}; (3) measurement of {Delta}m{sub 21}{sup 2} sin 2{theta}{sub 12} in a {nu}{sub {mu}} {yields} {nu}{sub e} appearance mode, independent of the value of {theta}{sub 13}; (4) verification of matter enhancement and the sign of {Delta}m{sub 32}{sup 2}; and (5) determination of the CP-violation parameter {delta}{sub CP} in the neutrino sector. This report details the performance requirements and conceptual design of the accelerator and the target systems for the production of a neutrino beam by a 1.0 MW proton beam from the AGS. The major components of this facility include a new 1.2 GeV superconducting linac, ramping the AGS at 2.5 Hz, and the new target station for 1.0 MW beam. It also calls for moderate increase, about 30%, of the AGS intensity per pulse. Special care is taken to account for all sources of proton beam loss plus shielding and collimation of stray beam halo particles to ensure equipment reliability and personal safety. A preliminary cost estimate and schedule for the accelerator upgrade and target system are also included.

DIWAN,M.; MARCIANO,W.; WENG,W.; RAPARIA,D.

2003-04-21T23:59:59.000Z

190

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

191

DEDICATED HEAVY ION MEDICAL ACCELERATORS  

E-Print Network [OSTI]

Lancaster, R.B. Yourd, Pre~,Accelerator A wideroe~,Basedcarbon beam medical accelerator facility. N "' . ,;j "' ::lEat the MARIA Workshop III: Accelerator Systems for Relat ic

Gough, R.A.

2013-01-01T23:59:59.000Z

192

Accelerator System Model (ASM) user manual with physics and engineering model documentation. ASM version 1.0  

SciTech Connect (OSTI)

The Accelerator System Model (ASM) is a computer program developed to model proton radiofrequency accelerators and to carry out system level trade studies. The ASM FORTRAN subroutines are incorporated into an intuitive graphical user interface which provides for the {open_quotes}construction{close_quotes} of the accelerator in a window on the computer screen. The interface is based on the Shell for Particle Accelerator Related Codes (SPARC) software technology written for the Macintosh operating system in the C programming language. This User Manual describes the operation and use of the ASM application within the SPARC interface. The Appendix provides a detailed description of the physics and engineering models used in ASM. ASM Version 1.0 is joint project of G. H. Gillespie Associates, Inc. and the Accelerator Technology (AT) Division of the Los Alamos National Laboratory. Neither the ASM Version 1.0 software nor this ASM Documentation may be reproduced without the expressed written consent of both the Los Alamos National Laboratory and G. H. Gillespie Associates, Inc.

NONE

1993-07-01T23:59:59.000Z

193

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

194

Proposal for the award of a contract for the design, supply, installation and commissioning of Heating, Ventilation and Air-Conditioning (HVAC) systems for the PS accelerator infrastructure  

E-Print Network [OSTI]

Proposal for the award of a contract for the design, supply, installation and commissioning of Heating, Ventilation and Air-Conditioning (HVAC) systems for the PS accelerator infrastructure

2012-01-01T23:59:59.000Z

195

Conceptual Design of a 50--100 MW Electron Beam Accelerator System for the National Hypersonic Wind Tunnel Program  

SciTech Connect (OSTI)

The National Hypersonic Wind Tunnel program requires an unprecedented electron beam source capable of 1--2 MeV at a beam power level of 50--100 MW. Direct-current electron accelerator technology can readily generate high average power beams to approximately 5 MeV at output efficiencies greater than 90%. However, due to the nature of research and industrial applications, there has never been a requirement for a single module with an output power exceeding approximately 500 kW. Although a 50--100 MW module is a two-order extrapolation from demonstrated power levels, the scaling of accelerator components appears reasonable. This paper presents an evaluation of component and system issues involved in the design of a 50--100 MW electron beam accelerator system with precision beam transport into a high pressure flowing air environment.

SCHNEIDER,LARRY X.

2000-06-01T23:59:59.000Z

196

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

197

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

198

ATLAS Distributed Data Analysis: challenges and performance  

E-Print Network [OSTI]

In the LHC operations era the key goal is to analyse the results of the collisions of high-energy particles as a way of probing the fundamental forces of nature. The ATLAS experiment at the LHC at CERN is recording and simulating several 10's of PetaBytes of data per year. The ATLAS Computing Model was designed around the concepts of Grid Computing. Large data volumes from the detectors and simulations require a large number of CPUs and storage space for data processing. To cope with this challenge a global network known as the Worldwide LHC Computing Grid (WLCG) was built. This is the most sophisticated data taking and analysis system ever built. ATLAS accumulated more than 140 PB of data between 2009 and 2014. To analyse these data ATLAS developed, deployed and now operates a mature and stable distributed analysis (DA) service on the WLCG. The service is actively used: more than half a million user jobs run daily on DA resources, submitted by more than 1500 ATLAS physicists. A significant reliability of the...

Fassi, Farida; The ATLAS collaboration

2015-01-01T23:59:59.000Z

199

Final technical report [ACCELERATED MOLECULAR DYNAMICS SIMULATIONS OF REACTIVE HYDROCARBON SYSTEMS  

SciTech Connect (OSTI)

The research activities in this project consisted of four different sub-projects. Three different accelerated dynamics techniques (parallel replica dynamics, hyperdynamics, and temperature-accelerated dynamics) were applied to the modeling of pyrolysis of hydrocarbons. In addition, parallel replica dynamics was applied to modeling of polymerization.

Stuart, Steven J.

2014-02-25T23:59:59.000Z

200

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...

Note: This page contains sample records for the topic "accelerator system atlas" 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

E-Print Network 3.0 - atlas detector commissioning Sample Search...  

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: The First Result of Global Commissioning of the ATALS Endcap Muon Trigger...

202

E-Print Network 3.0 - atlas level-2 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: The First Result of Global Commissioning of the ATALS Endcap Muon Trigger...

203

E-Print Network 3.0 - atlas muon 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: The First Result of Global Commissioning of the ATALS Endcap Muon Trigger...

204

E-Print Network 3.0 - atlas trigger event 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: The First Result of Global Commissioning of the ATALS Endcap Muon Trigger...

205

E-Print Network 3.0 - atlas 1st-level muon 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: The First Result of Global Commissioning of the ATALS Endcap Muon Trigger...

206

E-Print Network 3.0 - atlas mdt muon 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: The First Result of Global Commissioning of the ATALS Endcap Muon Trigger...

207

atlas pixel sensor: Topics by E-print Network  

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

G; Tsiskaridtze, S; Tsurin, I; Unno, Y; Weigel, P; Wittig, T 2012-01-01 5 Radiation Damage of the ATLAS Pixel Sensors Using Leakage Current Measurement System CERN Preprints...

208

atlas pixel sensors: Topics by E-print Network  

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

G; Tsiskaridtze, S; Tsurin, I; Unno, Y; Weigel, P; Wittig, T 2012-01-01 5 Radiation Damage of the ATLAS Pixel Sensors Using Leakage Current Measurement System CERN Preprints...

209

G-NetMon: A GPU-accelerated Network Performance Monitoring System for Large Scale Scientific Collaborations  

SciTech Connect (OSTI)

At Fermilab, we have prototyped a GPU-accelerated network performance monitoring system, called G-NetMon, to support large-scale scientific collaborations. Our system exploits the data parallelism that exists within network flow data to provide fast analysis of bulk data movement between Fermilab and collaboration sites. Experiments demonstrate that our G-NetMon can rapidly detect sub-optimal bulk data movements.

Wu, Wenji; DeMar, Phil; Holmgren, Don; Singh, Amitoj; Pordes, Ruth; /Fermilab

2011-08-01T23:59:59.000Z

210

Astrophysics experiments with radioactive beams at ATLAS  

SciTech Connect (OSTI)

Reactions involving short-lived nuclei play an important role in nuclear astrophysics, especially in explosive scenarios which occur in novae, supernovae or X-ray bursts. This article describes the nuclear astrophysics program with radioactive ion beams at the ATLAS accelerator at Argonne National Laboratory. The CARIBU facility as well as recent improvements for the in-flight technique are discussed. New detectors which are important for studies of the rapid proton or the rapid neutron-capture processes are described. At the end we briefly mention plans for future upgrades to enhance the intensity, purity and the range of in-flight and CARIBU beams.

Back, B. B.; Clark, J. A.; Pardo, R. C.; Rehm, K. E., E-mail: rehm@anl.gov; Savard, G. [Physics Division, Argonne National Laboratory, Argonne, IL 60439 (United States)] [Physics Division, Argonne National Laboratory, Argonne, IL 60439 (United States)

2014-04-15T23:59:59.000Z

211

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

212

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

213

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

214

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

215

ATLAS Tile Calorimeter Interface Card  

E-Print Network [OSTI]

-1- ATLAS Tile Calorimeter Interface Card K. Anderson, A. Gupta, J. Pilcher, H. Sanders, F. Tang, R. Teuscher, H. Wu The University of Chicago ABSTRACT This paper describes the ATLAS Tile Calorimeter. OVERVIEW The ATLAS Tile Calorimeter (Tilecal) [1] [Figure 1] front end electronics consists of 4 parts, 3in

216

https://edms.cern.ch/document/882783/2.6 Joint ATLAS/CMS NOTE Joint ATLAS-CMS working group on  

E-Print Network [OSTI]

on optoelectronics for SLHC Report from sub-group B Optical System Irradiation Guidelines K.K. Gan Department, ATLAS Pixel, ATLAS LAr and CMS tracker optical link designers. This document summarizes the agreement on irradiation guidelines for the optoelectronic systems at the SLHC. It covers lasers, p-i-n diodes, fibres, LLD

Ye, Jingbo

217

LASER ACCELERATORS  

E-Print Network [OSTI]

UNIVERSITY OF CALIFORNIA Accelerator & Fusion Researchat the 1983 Particle Accelerator Conference, Santa Fe, NM,March 21-23, 1983 LASER ACCELERATORS A.M. Sessler TWO-WEEK

Sessler, A.M.

2008-01-01T23:59:59.000Z

218

Conceptual design of minor actinides burner with an accelerator-driven subcritical system.  

SciTech Connect (OSTI)

In the environmental impact study of the Yucca Mountain nuclear waste repository, the limit of spent nuclear fuel (SNF) for disposal is assessed at 70,000 metric tons of heavy metal (MTHM), among which 63,000 MTHM are the projected SNF discharge from U.S. commercial nuclear power plants though 2011. Within the 70,000 MTHM of SNF in storage, approximately 115 tons would be minor actinides (MAs) and 585 tons would be plutonium. This study describes the conceptual design of an accelerator-driven subcritical (ADS) system intended to utilize (burn) the 115 tons of MAs. The ADS system consists of a subcritical fission blanket where the MAs fuel will be burned, a spallation neutron source to drive the fission blanket, and a radiation shield to reduce the radiation dose to an acceptable level. The spallation neutrons are generated from the interaction of a 1 GeV proton beam with a lead-bismuth eutectic (LBE) or liquid lead target. In this concept, the fission blanket consists of a liquid mobile fuel and the fuel carrier can be LBE, liquid lead, or molten salt. The actinide fuel materials are dissolved, mixed, or suspended in the liquid fuel carrier. Therefore, fresh fuel can be fed into the fission blanket to adjust its reactivity and to control system power during operation. Monte Carlo analyses were performed to determine the overall parameters of an ADS system utilizing LBE as an example. Steady-state Monte Carlo simulations were studied for three fission blanket configurations that are similar except that the loaded amount of actinide fuel in the LBE is either 5, 7, or 10% of the total volume of the blanket, respectively. The neutron multiplication factor values of the three configurations are all approximately 0.98 and the MA initial inventories are each approximately 10 tons. Monte Carlo burnup simulations using the MCB5 code were performed to analyze the performance of the three conceptual ADS systems. Preliminary burnup analysis shows that all three conceptual ADS systems consume about 1.2 tons of actinides per year and produce 3 GW thermal power, with a proton beam power of 25 MW. Total MA fuel that would be consumed in the first 10 years of operation is 9.85, 11.80, or 12.68 tons, respectively, for the systems with 5, 7, or 10% actinide fuel particles loaded in the LBE. The corresponding annual MA fuel transmutation rate after reaching equilibrium at 10 years of operation is 0.83, 0.94, or 1.02 tons/year, respectively. Assuming that the ADS systems can be operated for 35 full-power years, the total MAs consumed in the three ADS systems are 30.6, 35.3, and 37.2 tons, respectively. For the three configurations, it is estimated that 3.8, 3.3, or 3.1 ADS system units are required to utilize the entire 115 tons of MA fuel in the SNF inventory, respectively.

Cao, Y.; Gohar, Y. (Nuclear Engineering Division)

2011-11-04T23:59:59.000Z

219

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

220

E-Print Network 3.0 - acceleration proof-of-principle experiment...  

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

Cyclotron Autoresonance Accelerator... Experiment Intelligent Control System for Accelerators ... Source: Brookhaven National Laboratory - Accelerator Test Facility Collection:...

Note: This page contains sample records for the topic "accelerator system atlas" 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

ATLAS Jet Energy Scale  

E-Print Network [OSTI]

Jets originating from the fragmentation of quarks and gluons are the most common, and complicated, final state objects produced at hadron colliders. A precise knowledge of their energy calibration is therefore of great importance at experiments at the Large Hadron Collider at CERN, while is very difficult to ascertain. We present in-situ techniques and results for the jet energy scale at ATLAS using recent collision data. ATLAS has demonstrated an understanding of the necessary jet energy corrections to within \\approx 4% in the central region of the calorimeter.

D. Schouten; A. Tanasijczuk; M. Vetterli; for the ATLAS Collaboration

2012-01-11T23:59:59.000Z

222

Analysis Preservation in ATLAS  

E-Print Network [OSTI]

Long before data taking ATLAS established a policy that all analyses need to be preserved. In the initial data-taking period, this has been achieved by various tools and techniques. ATLAS is now reviewing the analysis preservation with the aim to bring coherence and robustness to the process and with a clearer view of the level of reproducibility that is reasonably achievable. The secondary aim is to reduce the load on the analysts. Once complete, this will serve for our internal preservation needs but also provide a basis for any subsequent sharing of analysis results with external parties.

Heinrich, Lukas; The ATLAS collaboration; Jones, Roger; Cranmer, Kyle

2015-01-01T23:59:59.000Z

223

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...

224

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

225

NATIONAL CARBON SEQUESTRATION DATABASE AND GEOGRAPHIC INFORMATION SYSTEM (NATCARB) FORMER TITLE-MIDCONTINENT INTERACTIVE DIGITAL CARBON ATLAS AND RELATIONAL DATABASE (MIDCARB)  

SciTech Connect (OSTI)

This annual report describes progress in the third year of the three-year project entitled ''Midcontinent Interactive Digital Carbon Atlas and Relational Database (MIDCARB)''. The project assembled a consortium of five states (Indiana, Illinois, Kansas, Kentucky and Ohio) to construct an online distributed Relational Database Management System (RDBMS) and Geographic Information System (GIS) covering aspects of carbon dioxide (CO{sub 2}) geologic sequestration (http://www.midcarb.org). The system links the five states in the consortium into a coordinated regional database system consisting of datasets useful to industry, regulators and the public. The project has been extended and expanded as a ''NATional CARBon Sequestration Database and Geographic Information System (NATCARB)'' to provide national coverage across the Regional CO{sub 2} Partnerships, which currently cover 40 states (http://www.natcarb.org). Advanced distributed computing solutions link database servers across the five states and other publicly accessible servers (e.g., USGS) into a single system where data is maintained and enhanced at the local level but is accessed and assembled through a single Web portal and can be queried, assembled, analyzed and displayed. This project has improved the flow of data across servers and increased the amount and quality of available digital data. The online tools used in the project have improved in stability and speed in order to provide real-time display and analysis of CO{sub 2} sequestration data. The move away from direct database access to web access through eXtensible Markup Language (XML) has increased stability and security while decreasing management overhead. The MIDCARB viewer has been simplified to provide improved display and organization of the more than 125 layers and data tables that have been generated as part of the project. The MIDCARB project is a functional demonstration of distributed management of data systems that cross the boundaries between institutions and geographic areas. The MIDCARB system addresses CO{sub 2} sequestration and other natural resource issues from sources, sinks and transportation within a spatial database that can be queried online. Visualization of high quality and current data can assist decision makers by providing access to common sets of high quality data in a consistent manner.

Timothy R. Carr

2004-07-16T23:59:59.000Z

226

Linking Accelerating Laboratory Test with Outdoor Performance Results for a Model Epoxy Coating System  

E-Print Network [OSTI]

and accelerate outdoor degradation by exposing materials for extended periods of time to high UV irradiance- based measurements on both exposure environments and degradation properties for epoxy specimens exposed), a device in which spectral ultraviolet (UV) wavelength, spectral intensity, temperature, and relative

227

The Higgs discovery potential of ATLAS  

E-Print Network [OSTI]

Higgs boson production and decay at the LHC is described, together with related ATLAS search channels, in order to provide an overview of the ATLAS Higgs discovery potential.

Christopher Collins-Tooth

2007-12-10T23:59:59.000Z

228

Lund University -the ATLAS group ATLAS experiment: New energy frontier  

E-Print Network [OSTI]

coordination Göran Jarlskog, professor emeritus Balazs Konya, post-doc, GRID www.quark.lu.se/~atlas Björn

Eerola, Paula

229

Higgs boson search at ATLAS  

E-Print Network [OSTI]

The status of the ATLAS Higgs boson search using about 5 fb^-1 of data recorded in 2011 is summarized. Proceedings from Physics at the LHC 2012 (Vancouver).

Scott Snyder; for the ATLAS Collaboration

2012-09-04T23:59:59.000Z

230

BioFuels Atlas Presentation  

Broader source: Energy.gov [DOE]

Kristi Moriarity's presentation on NREL's BioFuels Atlas from the May 12, 2011, Clean Cities and Biomass Program State webinar.

231

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

232

Carbon Sequestration Atlas IV Video  

ScienceCinema (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

2014-06-27T23:59:59.000Z

233

Microelectromechanical acceleration-sensing apparatus  

DOE Patents [OSTI]

An acceleration-sensing apparatus is disclosed which includes a moveable shuttle (i.e. a suspended mass) and a latch for capturing and holding the shuttle when an acceleration event is sensed above a predetermined threshold level. The acceleration-sensing apparatus provides a switch closure upon sensing the acceleration event and remains latched in place thereafter. Examples of the acceleration-sensing apparatus are provided which are responsive to an acceleration component in a single direction (i.e. a single-sided device) or to two oppositely-directed acceleration components (i.e. a dual-sided device). A two-stage acceleration-sensing apparatus is also disclosed which can sense two acceleration events separated in time. The acceleration-sensing apparatus of the present invention has applications, for example, in an automotive airbag deployment system.

Lee, Robb M. (Albuquerque, NM); Shul, Randy J. (Albuquerque, NM); Polosky, Marc A. (Albuquerque, NM); Hoke, Darren A. (Albuquerque, NM); Vernon, George E. (Rio Rancho, NM)

2006-12-12T23:59:59.000Z

234

THE ATLAS TILE CALORIMETER DIGITIZER S. Berglund, C. Bohm, S-O. Holmgren, K. Jon-And, J. Klereborn, B. Selldn, S. Silverstein  

E-Print Network [OSTI]

THE ATLAS TILE CALORIMETER DIGITIZER S. Berglund, C. Bohm, S-O. Holmgren, K. Jon-And, J. Klereborn and F. Tang University of Chicago Abstract A prototype digitizing system for the Atlas Tile Calorimeter was developed for evaluation in the ATLAS test beam with the barrel preproduction module during the summer

235

Architecture, implementation, and testing of a multiple-shell gas injection system for high current implosions on the Z accelerator  

SciTech Connect (OSTI)

Tests are ongoing to conduct {approx}20 MA z-pinch implosions on the Z accelerator at Sandia National Laboratory using Ar, Kr, and D{sub 2} gas puffs as the imploding loads. The relatively high cost of operations on a machine of this scale imposes stringent requirements on the functionality, reliability, and safety of gas puff hardware. Here we describe the development of a prototype gas puff system including the multiple-shell nozzles, electromagnetic drivers for each nozzle's valve, a UV pre-ionizer, and an inductive isolator to isolate the {approx}2.4 MV machine voltage pulse present at the gas load from the necessary electrical and fluid connections made to the puff system from outside the Z vacuum chamber. This paper shows how the assembly couples to the overall Z system and presents data taken to validate the functionality of the overall system.

Krishnan, Mahadevan; Elliott, Kristi Wilson; Madden, Robert E. [Alameda Applied Sciences Corporation, San Leandro, California 94577 (United States); Coleman, P. L. [Evergreen Hill Sciences, Philomath, Oregon 97370 (United States); Thompson, John R. [812 Temple Street, San Diego, California 92106 (United States); Bixler, Alex [Space Sciences Laboratory, University of California, Berkeley, Berkeley, California 94720 (United States); Lamppa, D. C.; McKenney, J. L.; Strizic, T.; Johnson, D.; Johns, O.; Vigil, M. P.; Jones, B.; Ampleford, D. J.; Savage, M. E.; Cuneo, M. E.; Jones, M. C. [Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)

2013-06-15T23:59:59.000Z

236

Future Accelerators (?)  

E-Print Network [OSTI]

I describe the future accelerator facilities that are currently foreseen for electroweak scale physics, neutrino physics, and nuclear structure. I will explore the physics justification for these machines, and suggest how the case for future accelerators can be made.

John Womersley

2003-08-09T23:59:59.000Z

237

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

238

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

239

High-value use of weapons-plutonium by burning in molten salt accelerator-driven subcritical systems or reactors  

SciTech Connect (OSTI)

The application of thermal-spectrum molten-salt reactors and accelerator-driven subcritical systems to the destruction of weapons-return plutonium is considered from the perspective of deriving the maximum societal benefit. The enhancement of electric power production from burning the fertile fuel {sup 232}Th with the plutonium is evaluated. Also the enhancement of destruction of the accumulated waste from commercial nuclear reactors is considered using the neutron-rich weapons plutonium. Most cases examined include the concurrent transmutation of the long-lived actinide and fission product waste ({sup 99}Tc, {sup 129}I, {sup 135}Cs, {sup 126}Sn and {sup 79}Se).

Bowman, C.D.; Venneri, F.

1993-11-01T23:59:59.000Z

240

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

Note: This page contains sample records for the topic "accelerator system atlas" 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 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

242

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

243

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

244

Simulations of flame acceleration and deflagration-to-detonation transitions in methane-air systems  

SciTech Connect (OSTI)

Flame acceleration and deflagration-to-detonation transitions (DDT) in large obstructed channels filled with a stoichiometric methane-air mixture are simulated using a single-step reaction mechanism. The reaction parameters are calibrated using known velocities and length scales of laminar flames and detonations. Calculations of the flame dynamics and DDT in channels with obstacles are compared to previously reported experimental data. The results obtained using the simple reaction model qualitatively, and in many cases, quantitatively match the experiments and are found to be largely insensitive to small variations in model parameters. (author)

Kessler, D.A.; Gamezo, V.N.; Oran, E.S. [Laboratory for Computational Physics and Fluid Dynamics, Naval Research Laboratory, Washington, DC (United States)

2010-11-15T23:59:59.000Z

245

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

246

X-ray atlas of rheumatic diseases  

SciTech Connect (OSTI)

This atlas comprises instructive X-rays of the various inflammatory rheumatic joint diseases in all stages at the extremities and the spinal column. In addition, the complex pattern of the wide range of arthroses, also known as degenerative rheumatic disease is included. Besides the instructive pointers to X-ray diagnosis, the book is also a guide to differential diagnosis. Hence, this book is actually an X-ray atlas of joint diseases in general. Selected Contents: Introduction: What Does ''Rheumatism'' Actually Mean./Radiographic Methodology in Rheumatic Diseases of the Locomotor System/The Mosaic of Arthritis/Adult Rheumatoid Arthritis/Seronegative Spondylarthritis/Classic Collagen Diseases/Enthesiopathies/Gout-Pseudogout

Dihlmann, W.

1986-01-01T23:59:59.000Z

247

E-Print Network 3.0 - accelerator vacuum systems Sample Search...  

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

systems... Transfer 11 Licensing of NEG and Palladium: Vacuum Systems (12) Vacuum Pumps (Varian) Internal coating... Lines Laboratory ... Source: Council for the Central...

248

Development of a Rating System for a Comparative Accelerated Test Standard (Presentation)  

SciTech Connect (OSTI)

This presentation discusses methods of developing and structuring a useful rating system and communicating the results.

Kurtz, S.

2013-06-01T23:59:59.000Z

249

Accelerating solidification process simulation for large-sized system of liquid metal atoms using GPU with CUDA  

SciTech Connect (OSTI)

Molecular dynamics simulation is a powerful tool to simulate and analyze complex physical processes and phenomena at atomic characteristic for predicting the natural time-evolution of a system of atoms. Precise simulation of physical processes has strong requirements both in the simulation size and computing timescale. Therefore, finding available computing resources is crucial to accelerate computation. However, a tremendous computational resource (GPGPU) are recently being utilized for general purpose computing due to its high performance of floating-point arithmetic operation, wide memory bandwidth and enhanced programmability. As for the most time-consuming component in MD simulation calculation during the case of studying liquid metal solidification processes, this paper presents a fine-grained spatial decomposition method to accelerate the computation of update of neighbor lists and interaction force calculation by take advantage of modern graphics processors units (GPU), enlarging the scale of the simulation system to a simulation system involving 10?000?000 atoms. In addition, a number of evaluations and tests, ranging from executions on different precision enabled-CUDA versions, over various types of GPU (NVIDIA 480GTX, 580GTX and M2050) to CPU clusters with different number of CPU cores are discussed. The experimental results demonstrate that GPU-based calculations are typically 9?11 times faster than the corresponding sequential execution and approximately 1.5?2 times faster than 16 CPU cores clusters implementations. On the basis of the simulated results, the comparisons between the theoretical results and the experimental ones are executed, and the good agreement between the two and more complete and larger cluster structures in the actual macroscopic materials are observed. Moreover, different nucleation and evolution mechanism of nano-clusters and nano-crystals formed in the processes of metal solidification is observed with large-sized system.

Jie, Liang [School of Information Science and Engineering, Hunan University, Changshang, 410082 (China)] [School of Information Science and Engineering, Hunan University, Changshang, 410082 (China); Li, KenLi, E-mail: lkl@hnu.edu.cn [School of Information Science and Engineering, Hunan University, Changshang, 410082 (China) [School of Information Science and Engineering, Hunan University, Changshang, 410082 (China); National Supercomputing Center in Changsha, 410082 (China); Shi, Lin [School of Information Science and Engineering, Hunan University, Changshang, 410082 (China)] [School of Information Science and Engineering, Hunan University, Changshang, 410082 (China); Liu, RangSu [School of Physics and Micro Electronic, Hunan University, Changshang, 410082 (China)] [School of Physics and Micro Electronic, Hunan University, Changshang, 410082 (China); Mei, Jing [School of Information Science and Engineering, Hunan University, Changshang, 410082 (China)] [School of Information Science and Engineering, Hunan University, Changshang, 410082 (China)

2014-01-15T23:59:59.000Z

250

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...

251

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

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

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

252

Expected Performance of the ATLAS Experiment - Detector, Trigger and Physics  

SciTech Connect (OSTI)

The Large Hadron Collider (LHC) at CERN promises a major step forward in the understanding of the fundamental nature of matter. The ATLAS experiment is a general-purpose detector for the LHC, whose design was guided by the need to accommodate the wide spectrum of possible physics signatures. The major remit of the ATLAS experiment is the exploration of the TeV mass scale where groundbreaking discoveries are expected. In the focus are the investigation of the electroweak symmetry breaking and linked to this the search for the Higgs boson as well as the search for Physics beyond the Standard Model. In this report a detailed examination of the expected performance of the ATLAS detector is provided, with a major aim being to investigate the experimental sensitivity to a wide range of measurements and potential observations of new physical processes. An earlier summary of the expected capabilities of ATLAS was compiled in 1999 [1]. A survey of physics capabilities of the CMS detector was published in [2]. The design of the ATLAS detector has now been finalised, and its construction and installation have been completed [3]. An extensive test-beam programme was undertaken. Furthermore, the simulation and reconstruction software code and frameworks have been completely rewritten. Revisions incorporated reflect improved detector modelling as well as major technical changes to the software technology. Greatly improved understanding of calibration and alignment techniques, and their practical impact on performance, is now in place. The studies reported here are based on full simulations of the ATLAS detector response. A variety of event generators were employed. The simulation and reconstruction of these large event samples thus provided an important operational test of the new ATLAS software system. In addition, the processing was distributed world-wide over the ATLAS Grid facilities and hence provided an important test of the ATLAS computing system - this is the origin of the expression 'CSC studies' ('computing system commissioning'), which is occasionally referred to in these volumes. The work reported does generally assume that the detector is fully operational, and in this sense represents an idealised detector: establishing the best performance of the ATLAS detector with LHC proton-proton collisions is a challenging task for the future. The results summarised here therefore represent the best estimate of ATLAS capabilities before real operational experience of the full detector with beam. Unless otherwise stated, simulations also do not include the effect of additional interactions in the same or other bunch-crossings, and the effect of neutron background is neglected. Thus simulations correspond to the low-luminosity performance of the ATLAS detector. This report is broadly divided into two parts: firstly the performance for identification of physics objects is examined in detail, followed by a detailed assessment of the performance of the trigger system. This part is subdivided into chapters surveying the capabilities for charged particle tracking, each of electron/photon, muon and tau identification, jet and missing transverse energy reconstruction, b-tagging algorithms and performance, and finally the trigger system performance. In each chapter of the report, there is a further subdivision into shorter notes describing different aspects studied. The second major subdivision of the report addresses physics measurement capabilities, and new physics search sensitivities. Individual chapters in this part discuss ATLAS physics capabilities in Standard Model QCD and electroweak processes, in the top quark sector, in b-physics, in searches for Higgs bosons, supersymmetry searches, and finally searches for other new particles predicted in more exotic models.

Aad, G.; Abat, E.; Abbott, B.; Abdallah, J.; Abdelalim, A.A.; Abdesselam, A.; Abdinov, O.; Abi, B.; Abolins, M.; Abramowicz, H.; Acharya, Bobby Samir; Adams, D.L.; Addy, T.N.; Adorisio, C.; Adragna, P.; Adye, T.; Aguilar-Saavedra, J.A.; Aharrouche, M.; Ahlen, S.P.; Ahles, F.; Ahmad, A.; /SUNY, Albany /Alberta U. /Ankara U. /Annecy, LAPP /Argonne /Arizona U. /Texas U., Arlington /Athens U. /Natl. Tech. U., Athens /Baku, Inst. Phys. /Barcelona, IFAE /Belgrade U. /VINCA Inst. Nucl. Sci., Belgrade /Bergen U. /LBL, Berkeley /Humboldt U., Berlin /Bern U., LHEP /Birmingham U. /Bogazici U. /INFN, Bologna /Bologna U.

2011-11-28T23:59:59.000Z

253

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

254

Commissioning of ATLAS  

E-Print Network [OSTI]

The status of the commissioning of the ATLAS experiment as of May 2008 is presented. The subdetector integration in recent milestone weeks is described, especially the cosmic commissioning in milestone week M6, focusing on simultaneous running and combined track analysis of the muon detector and inner detector. The liquid argon and tile calorimeters have achieved near-full operation, and are integrated with the calorimeter trigger. The High-Level-Trigger infrastructure is installed and algorithms tested in technical runs. Problems with the inner detector cooling compressors are being fixed.

Thomas, J

2008-01-01T23:59:59.000Z

255

Argonne Physics Division - ATLAS  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAbout theOFFICEAmesApplication2 (CRACApril 22-23, 2011 ATLAS PAC Meeting

256

Argonne Physics Division - ATLAS  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone byDear Friend, Please, mark the dates ofHELIOSThe ATLAS Program

257

Argonne Physics Division - ATLAS  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone byDear Friend, Please, mark the dates ofHELIOSThe ATLAS

258

Argonne Physics Division - ATLAS  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone byDear Friend, Please, mark the datesSchedulingATLAS Data

259

Argonne Physics Division - ATLAS  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone byDear Friend, Please, mark the datesSchedulingATLAS

260

Argonne Physics Division - ATLAS  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone byDear Friend, Please, mark theTraining Requirements for ATLAS

Note: This page contains sample records for the topic "accelerator system atlas" 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

Argonne Physics Division - ATLAS  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone byDear Friend, Please, markREGISTRATION FORM Name:2014 ATLAS

262

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

263

System for Nuclear Waste Transmutation Driven by Target-Distributed Accelerators  

E-Print Network [OSTI]

A design concept and characteristics for an epithermal breeder controlled by variable feedback and external neutron source intensity are presented. By replacing the control rods with neutron sources, we could improve safety and perform radioactive waste burning in high flux subcritical reactors (HFSR). To increase neutron source intensity the HFSR is divided into two zones: a booster and a blanket operating with solid and liquid fuels. Use of a liquid actinide fuel permits transport of the delayed-neutron emitters from the blanket to the booster where they can provide additional neutrons or all the necessary excitation. With blanket and booster multiplication factors of k=0.95 and 0.98, respectively, an external photoneutron source rate of at least 10.sup.15 n/s (electron beam power 2.5MW) is needed to control the HFSR that produces 300MWt. An inexpensive method of obtaining large neutron fluxes is target-distributed accelerators (TDA), in which a fission electrical cell (FEC) compensates for lost beam energy...

Blanovsky, A

2004-01-01T23:59:59.000Z

264

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...

265

E-Print Network 3.0 - accelerator system string Sample Search...  

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

of a desired acoustic system Efficient... for nearly lossless distributed wave media (strings, tubes, rods, membranes, plates, vocal tract, ) Losses Source: Smith...

266

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

267

Scalable Database Access Technologies for ATLAS Distributed Computing  

E-Print Network [OSTI]

ATLAS event data processing requires access to non-event data (detector conditions, calibrations, etc.) stored in relational databases. The database-resident data are crucial for the event data reconstruction processing steps and often required for user analysis. A main focus of ATLAS database operations is on the worldwide distribution of the Conditions DB data, which are necessary for every ATLAS data processing job. Since Conditions DB access is critical for operations with real data, we have developed the system where a different technology can be used as a redundant backup. Redundant database operations infrastructure fully satisfies the requirements of ATLAS reprocessing, which has been proven on a scale of one billion database queries during two reprocessing campaigns of 0.5 PB of single-beam and cosmics data on the Grid. To collect experience and provide input for a best choice of technologies, several promising options for efficient database access in user analysis were evaluated successfully. We present ATLAS experience with scalable database access technologies and describe our approach for prevention of database access bottlenecks in a Grid computing environment.

A. Vaniachine; for the ATLAS Collaboration

2009-10-02T23:59:59.000Z

268

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

269

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

270

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

271

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

272

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

273

Accelerating value capture of SAP enterprise resource planning (ERP) system : governance model and process  

E-Print Network [OSTI]

Raytheon produces a diverse range of defense products using a wide range of business systems and tools that are not currently integrated. To achieve the corporate vision of "one company", in 2005, Raytheon began to deploy ...

Shih, Ting-Chih

2009-01-01T23:59:59.000Z

274

OPERATING EXPERIENCE WITH A NEW ACCELERATOR CONTROL SYSTEM BASED UPON MICROPROCESSORS  

E-Print Network [OSTI]

control system compo nents such as multiplexors, timing modules, and graphicsCONTROL " ~ FROM DMM VECTOR VOLTAGES il l ENABLE SCOPE 1 HP 1350A GRAPHICScontrol. These signals are added to the output of the graphics

Magyary, S.

2010-01-01T23:59:59.000Z

275

Recent Results of the ATLAS Barrel Combined Test Beam  

SciTech Connect (OSTI)

In summer 2004 a full slice of the ATLAS detector -- including all detector subsystems from the inner tracker, the calorimetry to the muon system -- was exposed to particle beams (electrons, pions, photons, muons, protons) with different energies (from 1 GeV to 350 GeV). The aim was to study the combined performance of the different detector subsystems in ATLAS-like conditions.We present the electronics calibration scheme of the electromagnetic calorimeter (EMC) and its complete implementation. The calibrated response of the EMC is compared to the Monte Carlo simulations, showing that a very good description of the data has been achieved. Results of the combined data analysis are presented, focusing on the combined reconstruction of converted photons using the EMC and the ATLAS inner tracker.

Delmastro, Marco [CERN, Geneva (Switzerland); Universita degli Studi, Milan (Italy); INFN, Milan (Italy)

2006-10-27T23:59:59.000Z

276

Institutional Map and Atlas Collecting in Eighteenth-Century America  

E-Print Network [OSTI]

@historic-deerfield.org is Librarian and Curator of Maps at Historic Deerfield, 6 Memorial St., Deerfield, MA 01342. He is the author of ?Maps in the Marketplace: Cartographic Vendors and their Customers in Eighteenth-Century America,? Cartographica 42 (2007), and other articles... General Atlas of Thirty-six New Maps (London, 1771) by Carrington Bowles, Samuel Dunn?s A New Atlas of the Mundane System (London, 1778), The North American Pilot, for Newfoundland, Labrador and the Gulf and River St. Lawrence (London, 1784) by James...

Bosse, David

2008-04-17T23:59:59.000Z

277

Reduction of the Radiotoxicity of Spent Nuclear Fuel Using a Two-Tiered System Comprising Light Water Reactors and Accelerator-Driven Systems  

SciTech Connect (OSTI)

Two main issues regarding the disposal of spent nuclear fuel from nuclear reactors in the United States in the geological repository Yucca Mountain are: (1) Yucca Mountain is not designed to hold the amount of fuel that has been and is proposed to be generated in the next few decades, and (2) the radiotoxicity (i.e., biological hazard) of the waste (particularly the actinides) does not decrease below that of natural uranium ore for hundreds of thousands of years. One solution to these problems may be to use transmutation to convert the nuclides in spent nuclear fuel to ones with shorter half-lives. Both reactor and accelerator-based systems have been examined in the past for transmutation; there are advantages and disadvantages associated with each. By using existing Light Water Reactors (LWRs) to burn a majority of the plutonium in spent nuclear fuel and Accelerator-Driven Systems (ADSs) to transmute the remainder of the actinides, the benefits of each type of system can be realized. The transmutation process then becomes more efficient and less expensive. This research searched for the best combination of LWRs with multiple recycling of plutonium and ADSs to transmute spent nuclear fuel from past and projected nuclear activities (assuming little growth of nuclear energy). The neutronic design of each system is examined in detail although thermal hydraulic performance would have to be considered before a final system is designed. The results are obtained using the Monte Carlo burnup code Monteburns, which has been successfully benchmarked for MOX fuel irradiation and compared to other codes for ADS calculations. The best combination of systems found in this research includes 41 LWRs burning mixed oxide fuel with two recycles of plutonium ({approx}40 years operation each) and 53 ADSs to transmute the remainder of the actinides from spent nuclear fuel over the course of 60 years of operation.

H.R. Trellue

2003-06-01T23:59:59.000Z

278

Experimental study on the thorium-loaded accelerator-driven system at the Kyoto Univ. critical assembly  

SciTech Connect (OSTI)

The experimental study on the thorium-loaded accelerator-driven system (ADS) is conducted in the Kyoto Univ. Critical Assembly (KUCA). The experiments are carried out in both the critical and subcritical states for attaining the reaction rates of the thorium capture and fission reactions. In the critical system, the thorium plate irradiation experiment is carried out for the thorium capture and fission reactions. From the results of the measurements, the thorium fission reactions are obtained apparently in the critical system, and the C/E values of reaction rates show the accuracy of relative difference of about 30%. In the ADS experiments with 14 MeV neutrons and 100 MeV protons, the subcritical experiments are carried out in the thorium-loaded cores to obtain the capture reaction rates through the measurements of {sup 115}In(n, {gamma}){sup 116m}In reactions. The results of the experiments reveal the difference between the reaction rate distributions for the change in not only the neutron spectrum but also the external neutron source. The comparison between the measured and calculated reaction rate distributions demonstrates a discrepancy of the accuracy of reaction rate analyses of thorium capture reactions through the thorium-loaded ADS experiments with 14 MeV neutrons. Hereafter, kinetic experiments are planned to be carried out to deduce the delayed neutron decay constants and subcriticality using the pulsed neutron method. (authors)

Pyeon, C. H.; Yagi, T.; Lim, J. Y.; Misawa, T. [Nuclear Science Engineering Div., Research Reactor Inst., Kyoto Univ., Asashiro-nishi, Kumatori-cho, Sennan-gun, Osaka 590-0494 (Japan)

2012-07-01T23:59:59.000Z

279

Consumer Energy Atlas  

SciTech Connect (OSTI)

This first edition of the Atlas provides, in reference form, a central source of information to consumers on key contacts concerned with energy in the US. Energy consumers need information appropriate to local climates and characteristics - best provided by state and local governments. The Department of Energy recognizes the authority of state and local governments to manage energy programs on their own. Therefore, emphasis has been given to government organizations on both the national and state level that influence, formulate, or administer policies affecting energy production, distribution, and use, or that provide information of interest to consumers and non-specialists. In addition, hundreds of non-government energy-related membership organizations, industry trade associations, and energy publications are included.

Not Available

1980-06-01T23:59:59.000Z

280

Vehicle Technologies Office Merit Review 2014: Accelerating the Evaluation and Market Introduction of Advanced Technologies Through Model Based System Engineering  

Broader source: Energy.gov [DOE]

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

Note: This page contains sample records for the topic "accelerator system atlas" 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

Accelerate Energy  

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

Accelerate Energy Productivity 2030 Over the next year, the U.S. Department of Energy, the Council on Competitiveness and the Alliance to Save Energy will join forces to undertake...

282

ACCELERATE ENERGY  

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

ACCELERATE ENERGY PRODUCTIVITY 2030 A Partnership To Double U.S. Energy Productivity By 2030 LEARN MORE AT: www.energy2030.org "I'm issuing a new goal for America: let's cut in...

283

The heart of ATLAS Commissioning and performance of the ATLAS silicon tracker  

E-Print Network [OSTI]

The Large Hadron Collider (LHC) has been built under the french-swiss border near Geneva, Switzerland. Two opposing beams of protons will collide with a centre of mass energy of 14 TeV, an energy seven million times that of the first accelerator. The LHC takes particle physics research to a new frontier. On September 10th 2008, the first single pilot beam of $2 x 10^9$ protons was circulated successfully through the entire LHC, with an injection energy of 0.45 TeV. The first collisions are expected in Summer 2009. One of the experiments designed to search for new particle phenomena is the ATLAS experiment. This is a general purpose detector capable of detecting and measuring the broadest range of particle signals. At the heart of the ATLAS detector lies the SemiConductor Tracker (SCT). It is a central part of the inner detector providing precision measurements of particle trajectories over a large $\\eta$ range. The work presented in this thesis focuses on the performance and commissioning of the SCT detector....

Magrath, Caroline Alexandra

2009-01-01T23:59:59.000Z

284

E-Print Network 3.0 - atlas mdt muonchambers Sample Search Results  

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

Page: << < 1 2 3 4 5 > >> 1 CHRISTOPH AMELUNG Date of birth July 14, 1971 (DetmoldGermany) Summary: on the optical alignment system of the ATLAS MDT chambers July 2002 -...

285

E-Print Network 3.0 - atlas mdt bos Sample Search Results  

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

bos Page: << < 1 2 3 4 5 > >> 1 CHRISTOPH AMELUNG Date of birth July 14, 1971 (DetmoldGermany) Summary: on the optical alignment system of the ATLAS MDT chambers July 2002 -...

286

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

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

Page: << < 1 2 3 4 5 > >> 1 CHRISTOPH AMELUNG Date of birth July 14, 1971 (DetmoldGermany) Summary: on the optical alignment system of the ATLAS MDT chambers July 2002 -...

287

Development of a comprehensive reporting system for a school reform organization: The Accelerated Schools Project  

E-Print Network [OSTI]

on the evaluation procedures of whole-school reform organizations. Because the ultimate goal is to improve school performance, it should also be a goal of each whole-school reform organization to design a comprehensive data collection system to evaluate each school...

Stephens, Jennifer Anne

2006-04-12T23:59:59.000Z

288

Acceleration Fund  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAbout the Building Technologies Office AboutAccelerateAccelerating

289

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

290

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.

291

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

292

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.

293

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

294

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

295

Maximal acceleration or maximal accelerations?  

E-Print Network [OSTI]

We review the arguments supporting the existence of a maximal acceleration for a massive particle and show that different values of this upper limit can be predicted in different physical situations.

A. Feoli

2002-10-12T23:59:59.000Z

296

A scalable messaging system for accelerating discovery from large scale scientific simulations  

SciTech Connect (OSTI)

Emerging scientific and engineering simulations running at scale on leadership-class High End Computing (HEC) environments are producing large volumes of data, which has to be transported and analyzed before any insights can result from these simulations. The complexity and cost (in terms of time and energy) associated with managing and analyzing this data have become significant challenges, and are limiting the impact of these simulations. Recently, data-staging approaches along with in-situ and in-transit analytics have been proposed to address these challenges by offloading I/O and/or moving data processing closer to the data. However, scientists continue to be overwhelmed by the large data volumes and data rates. In this paper we address this latter challenge. Specifically, we propose a highly scalable and low-overhead associative messaging framework that runs on the data staging resources within the HEC platform, and builds on the staging-based online in-situ/in- transit analytics to provide publish/subscribe/notification-type messaging patterns to the scientist. Rather than having to ingest and inspect the data volumes, this messaging system allows scientists to (1) dynamically subscribe to data events of interest, e.g., simple data values or a complex function or simple reduction (max()/min()/avg()) of the data values in a certain region of the application domain is greater/less than a threshold value, or certain spatial/temporal data features or data patterns are detected; (2) define customized in-situ/in-transit actions that are triggered based on the events, such as data visualization or transformation; and (3) get notified when these events occur. The key contribution of this paper is a design and implementation that can support such a messaging abstraction at scale on high- end computing (HEC) systems with minimal overheads. We have implemented and deployed the messaging system on the Jaguar Cray XK6 machines at Oak Ridge National Laboratory and the Lonestar system at the Texas Advanced Computing Center (TACC), and we present the experimental performance evaluation using these HEC platforms in the paper.

Jin, Tong [Rutgers University; Zhang, Fan [Rutgers University; Parashar, Manish [Rutgers University; Klasky, Scott A [ORNL; Podhorszki, Norbert [ORNL; Abbasi, Hasan [ORNL

2012-01-01T23:59:59.000Z

297

Accelerated Testing Validation  

E-Print Network [OSTI]

the University of California. Accelerated Testing Validationmaterials requires relevant Accelerated Stress Tests (ASTs),

Mukundan, Rangachary

2013-01-01T23:59:59.000Z

298

ATLAS Experience with HEP Software at the Argonne Leadership Computing Facility  

E-Print Network [OSTI]

A number of HEP software packages used by the ATLAS experiment, including GEANT4, ROOT and ALPGEN, have been adapted to run on the IBM Blue Gene supercomputers at the Argonne Leadership Computing Facility. These computers use a non-x86 architecture and have a considerably less rich operating environment than in common use in HEP, but also represent a computing capacity an order of magnitude beyond what ATLAS is presently using via the LCG. The status and potential for making use of leadership-class computing, including the status of integration with the ATLAS production system, is discussed.

LeCompte, T; The ATLAS collaboration; Benjamin, D

2013-01-01T23:59:59.000Z

299

Materials considerations for molten salt accelerator-based plutonium conversion systems  

SciTech Connect (OSTI)

A Molten-Salt Reactor Program for power applications was initiated at the Oak Ridge National Laboratory in 1956. In 1965 the Molten Salt Reactor Experiment (MSRE) went critical and was successfully operated for several years. Operation of the MSRE revealed two deficiencies in the Hastelloy N alloy that had been developed specifically for molten-salt systems. The alloy embrittled at elevated temperatures as a result of exposure to thermal neutrons (radiation damage) and grain boundary embrittlement occurred in materials to fuel salt. Intergranular cracking was found to be associated with fission products, viz. tellurium. An improved Hastelloy N composition was subsequently developed that had better resistance to both of these problems. However, the discovery that fission product cracking could be significantly decreased by making the salt sufficiently reducing offers the prospect of improved compatibility with molten salts containing fission products and resistance to radiation damage in ABC applications. Recommendations are made regarding the types of corrosion tests and mechanistic studies needed to qualify materials for operation with PuF{sub 3}-containing molten salts.

DeVan, J.H.; DiStefano, J.R.; Eatherly, W.P.; Keiser, J.R.; Klueh, R.L.

1994-12-31T23:59:59.000Z

300

Preparation of Northern Mid-Continent Petroleum Atlas  

SciTech Connect (OSTI)

As proposed, the third year program will continue and expand upon the Kansas elements of the original program, and provide improved on-line access to the prototype atlas. The third year of the program will result in a digital atlas sufficient to provide a permanent improvement in data access to Kansas operators. The ultimate goal of providing an interactive history-matching interface with a regional data base will be demonstrated as the program covers more geographic territory and the data base expands. The atlas will expand to include significant reservoirs representing the major plays in Kansas, and North Dakota. Primary products of the third year prototype atlas will be on-line accessible digital data bases and technical publications covering two additional petroleum plays in Kansas and one in North Dakota. Regional databases will be supplemented with geological field studies of selected fields in each play. Digital imagery, digital mapping, relational data queries, and geographical information systems will be integral to the field studies and regional data sets. Data sets will have relational links to provide opportunity for history-matching, feasibility, and risk analysis tests on contemplated exploration and development projects. The flexible "web-like" design of the atlas provides ready access to data, and technology at a variety of scales from regional, to field, to lease, and finally to the individual well bore. The digital structure of the atlas permits the operator to access comprehensive reservoir data and customize the interpretative products (e.g., maps and cross-sections) to their needs. The atlas will be accessible in digital form on-line using a World-Wide-Web browser as the graphical user interface. Regional data sets and field studies will be free-standing entities that will be made available on-line through the Internet to users as they are completed. Technology transfer activities will be ongoing from the earliest part of this project, providing data information sets to operators prior to the full digital atlas compilation.

Lee C. Gerhard; Timothy R. Carr; W. Lynn Watney

1998-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "accelerator system atlas" 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

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

302

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.

303

EVAPORATIVE COOLING - CONCEPTUAL DESIGN FOR ATLAS SCT  

E-Print Network [OSTI]

The conceptual design of an evaporative two-phase flow cooling system for the ATLAS SCT detector is described, using perfluorinated propane (C3F8) as a coolant. Comparison with perfluorinated butane (C4F10) is made, although the detailed design is presented only for C3F8. The two-phase pressure drop and heat transfer coefficient are calculated in order to determine the dimensions of the cooling pipes and module contacts for the Barrel SCT. The region in which the flow is homogeneous is determined. The cooling cycle, pipework, compressor, heat exchangers and other main elements of the system are calculated in order to be able to discuss the system control, safety and reliability. Evaporative cooling appears to be substantially better than the binary ice system from the point of view of safety, reliability, detector thickness, heat transfer coefficient, cost and simplicity.

Niinikoski, T O

1998-01-01T23:59:59.000Z

304

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

305

The ATLAS Liquid Argon Calorimeter: Construction, Integration, Commissioning  

SciTech Connect (OSTI)

The ATLAS liquid argon (LAr) calorimeter system consists of an electromagnetic barrel calorimeter and two end caps with electromagnetic, hadronic and forward calorimeters. The liquid argon sampling technique, with an accordion geometry was chosen for the barrel electromagnetic calorimeter (EMB) and adapted to the end cap (EMEC). The hadronic end cap calorimeter (HEC) uses a copper-liquid argon sampling technique with flat plate geometry and is subdivided in depth in two wheels per end-cap. Finally, the forward calorimeter (FCAL) is composed of three modules employing cylindrical electrodes with thin liquid argon gaps.The construction of the full calorimeter system is complete since mid-2004. Production modules constructed in the home institutes were integrated into wheels at CERN in 2003-2004, and inserted into the three cryostats. They passed their first complete cold test before the lowering into the ATLAS cavern. Results of quality checks (e.g. electrical, mechanical, ...) performed on all the 190304 read-out channels after cool down will be reported. End 2004 the ATLAS barrel electromagnetic (EM) calorimeter was installed in the ATLAS cavern and since summer 2005 the front-end electronics are being connected and tested. Results of this first commissioning phase will be shown to demonstrate the high standards of quality control for our detectors.

Aleksa, Martin [PH-Department, CERN, 1211 Geneva (Switzerland)

2006-10-27T23:59:59.000Z

306

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

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

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

307

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

308

E-Print Network 3.0 - acceleration Sample Search Results  

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

these benefits, accelerator... - based systems that emphasize computation on accelerators ... Source: Hempstead, Mark - Electrical and Computer Engineering Department,...

309

Test Facility Daniil Stolyarov, Accelerator Test Facility User...  

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

Development of the Solid-State Laser System for the Accelerator Test Facility Daniil Stolyarov, Accelerator Test Facility User's Meeting April 3, 2009 Outline Motivation for...

310

Compact accelerator for medical therapy  

DOE Patents [OSTI]

A compact accelerator system having an integrated particle generator-linear accelerator with a compact, small-scale construction capable of producing an energetic (.about.70-250 MeV) proton beam or other nuclei and transporting the beam direction to a medical therapy patient without the need for bending magnets or other hardware often required for remote beam transport. The integrated particle generator-accelerator is actuable as a unitary body on a support structure to enable scanning of a particle beam by direction actuation of the particle generator-accelerator.

Caporaso, George J.; Chen, Yu-Jiuan; Hawkins, Steven A.; Sampayan, Stephen E.; Paul, Arthur C.

2010-05-04T23:59:59.000Z

311

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

312

High-performance scalable Information Service for the ATLAS experiment  

E-Print Network [OSTI]

The ATLAS experiment is being operated by highly distributed computing system which is constantly producing a lot of status information which is used to monitor the experiment operational conditions as well as to access the quality of the physics data being taken. For example the ATLAS High Level Trigger(HLT) algorithms are executed on the online computing farm consisting from about 1500 nodes. Each HLT algorithm is producing few thousands histograms, which have to be integrated over the whole farm and carefully analyzed in order to properly tune the event rejection. In order to handle such non-physics data the Information Service (IS) facility has been developed in the scope of the ATLAS TDAQ project. The IS provides high-performance scalable solution for information exchange in distributed environment. In the course of an ATLAS data taking session the IS handles about hundred gigabytes of information which is being constantly updated with the update interval varying from a second to few tens of seconds. IS ...

Kolos, S; The ATLAS collaboration; Hauser, R

2012-01-01T23:59:59.000Z

313

GPU accelerated cardiac electrophysiology  

E-Print Network [OSTI]

OF THE THESIS GPU Accelerated Cardiac Electrophysiology bySAN DIEGO GPU Accelerated Cardiac Electrophysiology A thesistoolkit for developing GPU accelerated programs called CUDA,

Lionetti, Fred

2010-01-01T23:59:59.000Z

314

Failure Atlas for Rolling Bearings in Wind Turbines  

SciTech Connect (OSTI)

This Atlas is structured as a supplement to the book: T.E. Tallian: Failure Atlas for Hertz Contact Machine Elements, 2nd edition, ASME Press New York, (1999). The content of the atlas comprises plate pages from the book that contain bearing failure images, application data, and descriptions of failure mode, image, and suspected failure causes. Rolling bearings are a critical component of the mainshaft system, gearbox and generator in the rapidly developing technology of power generating wind turbines. The demands for long service life are stringent; the design load, speed and temperature regimes are demanding and the environmental conditions including weather, contamination, impediments to monitoring and maintenance are often unfavorable. As a result, experience has shown that the rolling bearings are prone to a variety of failure modes that may prevent achievement of design lives. Morphological failure diagnosis is extensively used in the failure analysis and improvement of bearing operation. Accumulated experience shows that the failure appearance and mode of failure causation in wind turbine bearings has many distinguishing features. The present Atlas is a first effort to collect an interpreted database of specifically wind turbine related rolling bearing failures and make it widely available. This Atlas is structured as a supplement to the book: T. E. Tallian: Failure Atlas for Hertz Contact Machine Elements, 2d edition, ASME Press New York, (1999). The main body of that book is a comprehensive collection of self-contained pages called Plates, containing failure images, bearing and application data, and three descriptions: failure mode, image and suspected failure causes. The Plates are sorted by main failure mode into chapters. Each chapter is preceded by a general technical discussion of the failure mode, its appearance and causes. The Plates part is supplemented by an introductory part, describing the appearance classification and failure classification systems used, and by several indexes. The present Atlas is intended as a supplement to the book. It has the same structure but contains only Plate pages, arranged in chapters, each with a chapter heading page giving a short definition of the failure mode illustrated. Each Plate page is self contained, with images, bearing and application data, and descriptions of the failure mode, the images and the suspected causes. Images are provided in two resolutions: The text page includes 6 by 9 cm images. In addition, high resolution image files are attached, to be retrieved by clicking on their 'push pin' icon. While the material in the present Atlas is self-contained, it is nonetheless a supplement to the book and the complete interpretation of the terse image descriptions and of the system underlying the failure code presupposes familiarity with the book. Since this Atlas is a supplement to the book, its chapter numbering follows that of the book. Not all failure modes covered in the book have been found among the observed wind turbines. For that reason, and because of the omission of introductory matter, the chapter numbers in this Atlas are not a continuous sequence.

Tallian, T. E.

2006-01-01T23:59:59.000Z

315

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

316

Accelerated molecular dynamics methods  

SciTech Connect (OSTI)

The molecular dynamics method, although extremely powerful for materials simulations, is limited to times scales of roughly one microsecond or less. On longer time scales, dynamical evolution typically consists of infrequent events, which are usually activated processes. This course is focused on understanding infrequent-event dynamics, on methods for characterizing infrequent-event mechanisms and rate constants, and on methods for simulating long time scales in infrequent-event systems, emphasizing the recently developed accelerated molecular dynamics methods (hyperdynamics, parallel replica dynamics, and temperature accelerated dynamics). Some familiarity with basic statistical mechanics and molecular dynamics methods will be assumed.

Perez, Danny [Los Alamos National Laboratory

2011-01-04T23:59:59.000Z

317

atlas experimental area: Topics by E-print Network  

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

Large Hadron Collider (LHC). ATLAS is a multi-purpose detector built to search the Higgs boson, look 12 Distributed processing and analysis of ATLAS experimental data CERN...

318

Status and Prospects from the ATLAS Detector  

E-Print Network [OSTI]

Since the startup of the LHC in December 2009, the ATLAS detector has been accumulating data from collisions at center of mass energies of 900 GeV and 7 TeV. Although the integrated luminosity is still low, it is increasing at an accelerated pace. The data have already made it possible to commission and calibrate the various subdetectors, understand their performance in detail and refine the trigger and software reconstruction algorithms. Initial measurements on charged particle multiplicities at sqrt{s} = 900 GeV and 7 TeV as a function of pseudorapidity and transverse momentum have allowed comparisons to results from other experiments at the lower center of mass energy and to various Monte Carlo models of minimum bias events. Standard Model electroweak processes are also being used as benchmarks for validating the analysis and simulation tools. With the higher luminosity expected in the coming year, stringent tests of higher order QCD processes could be achieved. Various models of new physics could be probe...

Azuelos, G; The ATLAS collaboration

2010-01-01T23:59:59.000Z

319

Acceleration of dormant storage effects to address the reliability of silicon surface micromachined Micro-Electro-Mechanical Systems (MEMS).  

SciTech Connect (OSTI)

Qualification of microsystems for weapon applications is critically dependent on our ability to build confidence in their performance, by predicting the evolution of their behavior over time in the stockpile. The objective of this work was to accelerate aging mechanisms operative in surface micromachined silicon microelectromechanical systems (MEMS) with contacting surfaces that are stored for many years prior to use, to determine the effects of aging on reliability, and relate those effects to changes in the behavior of interfaces. Hence the main focus was on 'dormant' storage effects on the reliability of devices having mechanical contacts, the first time they must move. A large number ({approx}1000) of modules containing prototype devices and diagnostic structures were packaged using the best available processes for simple electromechanical devices. The packaging processes evolved during the project to better protect surfaces from exposure to contaminants and water vapor. Packages were subjected to accelerated aging and stress tests to explore dormancy and operational environment effects on reliability and performance. Functional tests and quantitative measurements of adhesion and friction demonstrated that the main failure mechanism during dormant storage is change in adhesion and friction, precipitated by loss of the fluorinated monolayer applied after fabrication. The data indicate that damage to the monolayer can occur at water vapor concentrations as low as 500 ppm inside the package. The most common type of failure was attributed to surfaces that were in direct contact during aging. The application of quantitative methods for monolayer lubricant analysis showed that even though the coverage of vapor-deposited monolayers is generally very uniform, even on hidden surfaces, locations of intimate contact can be significantly depleted in initial concentration of lubricating molecules. These areas represent defects in the film prone to adsorption of water or contaminants that can cause movable structures to adhere. These analysis methods also indicated significant variability in the coverage of lubricating molecules from one coating process to another, even for identical processing conditions. The variability was due to residual molecules left in the deposition chamber after incomplete cleaning. The coating process was modified to result in improved uniformity and total coverage. Still, a direct correlation was found between the resulting static friction behavior of MEMS interfaces, and the absolute monolayer coverage. While experimental results indicated that many devices would fail to start after aging, the modeling approach used here predicted that all the devices should start. Adhesion modeling based upon values of adhesion energy from cantilever beams is therefore inadequate. Material deposition that bridged gaps was observed in some devices, and potentially inhibits start-up more than the adhesion model indicates. Advances were made in our ability to model MEMS devices, but additional combined experimental-modeling studies will be needed to advance the work to a point of providing predictive capability. The methodology developed here should prove useful in future assessments of device aging, however. Namely, it consisted of measuring interface properties, determining how they change with time, developing a model of device behavior incorporating interface behavior, and then using the age-aware interface behavior model to predict device function.

Cox, James V.; Candelaria, Sam A.; Dugger, Michael Thomas; Duesterhaus, Michelle Ann; Tanner, Danelle Mary; Timpe, Shannon J.; Ohlhausen, James Anthony; Skousen, Troy J.; Jenkins, Mark W.; Jokiel, Bernhard, Jr.; Walraven, Jeremy Allen; Parson, Ted Blair

2006-06-01T23:59:59.000Z

320

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

Note: This page contains sample records for the topic "accelerator system atlas" 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

Accelerators and the Accelerator Community  

SciTech Connect (OSTI)

In this paper, standing back--looking from afar--and adopting a historical perspective, the field of accelerator science is examined. How it grew, what are the forces that made it what it is, where it is now, and what it is likely to be in the future are the subjects explored. Clearly, a great deal of personal opinion is invoked in this process.

Malamud, Ernest; Sessler, Andrew

2008-06-01T23:59:59.000Z

322

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

323

Accelerators, Electrodynamics  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation InInformationCenterResearch Highlights MediaFuel ProductionForAccelerators,

324

Application Acceleration  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAbout theOFFICEAmesApplication Acceleration on Current and Future Cray

325

Accelerated immunosenescence in preindustrial twin mothers  

E-Print Network [OSTI]

Accelerated immunosenescence in preindustrial twin mothers Samuli Helle* , Virpi Lummaa , and Jukka that this tradeoff is a result of reproductive costs accelerating senescence of the immune system, leading to earlier accelerated immunosenescence. immune function cost of reproduction longevity reproductive effort tuberculosis

Lummaa, Virpi

326

Performance of the ATLAS Tile Calorimeter  

E-Print Network [OSTI]

The ATLAS Tile hadronic calorimeter (TileCal) provides highly-segmented energy measurements of incoming particles. It is a key detector for the measurement of hadrons, jets, tau leptons and missing transverse energy. It is also useful for identification and reconstruction of muons due to good signal to noise ratio. The calorimeter consists of thin steel plates and 460,000 scintillating tiles configured into 5000 cells, each viewed by two photomultipliers. The calorimeter response and its readout electronics is monitored to better than 1% using radioactive source, laser and charge injection systems. The calibration and performance of the calorimeter have been established through test beam measurements, cosmic ray muons and the large sample of proton-proton collisions acquired in 2011 and 2012. Results on the calorimeter performance are presented, including the absolute energy scale, timing, noise and associated stabilities. The results demonstrate that the Tile Calorimeter has performed well within the design ...

Heelan, Louise; The ATLAS collaboration

2015-01-01T23:59:59.000Z

327

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

328

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...

329

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

330

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

331

Physics design of a 100 keV acceleration grid system for the diagnostic neutral beam for international tokamak experimental reactor  

SciTech Connect (OSTI)

This paper describes the physics design of a 100 keV, 60 A H{sup -} accelerator for the diagnostic neutral beam (DNB) for international tokamak experimental reactor (ITER). The accelerator is a three grid system comprising of 1280 apertures, grouped in 16 groups with 80 apertures per beam group. Several computer codes have been used to optimize the design which follows the same philosophy as the ITER Design Description Document (DDD) 5.3 and the 1 MeV heating and current drive beam line [R. Hemsworth, H. Decamps, J. Graceffa, B. Schunke, M. Tanaka, M. Dremel, A. Tanga, H. P. L. De Esch, F. Geli, J. Milnes, T. Inoue, D. Marcuzzi, P. Sonato, and P. Zaccaria, Nucl. Fusion 49, 045006 (2009)]. The aperture shapes, intergrid distances, and the extractor voltage have been optimized to minimize the beamlet divergence. To suppress the acceleration of coextracted electrons, permanent magnets have been incorporated in the extraction grid, downstream of the cooling water channels. The electron power loads on the extractor and the grounded grids have been calculated assuming 1 coextracted electron per ion. The beamlet divergence is calculated to be 4 mrad. At present the design for the filter field of the RF based ion sources for ITER is not fixed, therefore a few configurations of the same have been considered. Their effect on the transmission of the electrons and beams through the accelerator has been studied. The OPERA-3D code has been used to estimate the aperture offset steering constant of the grounded grid and the extraction grid, the space charge interaction between the beamlets and the kerb design required to compensate for this interaction. All beamlets in the DNB must be focused to a single point in the duct, 20.665 m from the grounded grid, and the required geometrical aimings and aperture offsets have been calculated.

Singh, M. J. [ITER-India, Institute for Plasma Research, Bhat, Gandhinagar, Gujarat 382428 (India); De Esch, H. P. L. [CEA-Cadarache, IRFM, F-13108 Saint-Paul-lez-Durance (France)

2010-01-15T23:59:59.000Z

332

Linear induction accelerator  

DOE Patents [OSTI]

A linear induction accelerator includes a plurality of adder cavities arranged in a series and provided in a structure which is evacuated so that a vacuum inductance is provided between each adder cavity and the structure. An energy storage system for the adder cavities includes a pulsed current source and a respective plurality of bipolar converting networks connected thereto. The bipolar high-voltage, high-repetition-rate square pulse train sets and resets the cavities. 4 figs.

Buttram, M.T.; Ginn, J.W.

1988-06-21T23:59:59.000Z

333

Aging and Gas Filtration Studies in the ATLAS Transition Radiation Tracker  

E-Print Network [OSTI]

The Transition Radiation Tracker (TRT) is one of three particle tracking detectors of the ATLAS Inner Detector whose goal is to exploit the highly exciting new physics potential at CERN's next accelerator, the so-called Large Hadron Collider (LHC). The TRT consists of 370000 straw proportional tubes of 4 mm diameter with a 30 micron anode wire, which will be operated with a Xe/CO2/O2 gas mixture at a high voltage of approximately 1.5 kV. This detector enters a new area that requires it to operate at unprecedented high rates and integrated particle fluxes. Full functionality of the detector over the lifetime (10 years) of the experiment is demanded. Aging of gaseous detectors is a term for the degradation of detector performance during exposure to ionizing radiation. This phenomenon involves very complex physical and chemical processes that are induced by pollution originating from very small amounts of silicon-based substances in some components of the gas system. This work presents a review of previous aging...

Sprachmann, Gerald; Stri, Herbert

2006-01-01T23:59:59.000Z

334

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

335

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

336

Teleportation of Accelerated Information  

E-Print Network [OSTI]

A theoretical quantum teleportation protocal is suggested to teleport accelerated and non-accelerated information over different classes of accelerated quantum channels. For the accelerated information, it is shown that the fidelity of the teleported state increases as the entanglement of the initial quantum channel increases. However as the difference between the accelerated channel and the accelerated information decreases the fidelity increases. The fidelity of the non accelerated information increases as the entanglement of the initial quantum channel increases, while the accelerations of the quantum channel has a little effect. The possibility of sending quantum information over accelerated quantum channels is much better than sending classical information.

N. Metwally

2012-06-17T23:59:59.000Z

337

Grid Engineering for Accelerated Renewable Energy Deployment  

Broader source: Energy.gov [DOE]

The SunShot Grid Engineering for Accelerated Renewable Energy Deployment (GEARED) program supports increased power system research, development, and analytical capacity while simultaneously growing...

338

A Wire Position Monitor System for the 1.3 FHZ Tesla-Style Cryomodule at the Fermilab New-Muon-Lab Accelerator  

SciTech Connect (OSTI)

The first cryomodule for the beam test facility at the Fermilab New-Muon-Lab building is currently under RF commissioning. Among other diagnostics systems, the transverse position of the helium gas return pipe with the connected 1.3 GHz SRF accelerating cavities is measured along the {approx}15 m long module using a stretched-wire position monitoring system. An overview of the wire position monitor system technology is given, along with preliminary results taken at the initial module cooldown, and during further testing. As the measurement system offers a high resolution, we also discuss options for use as a vibration detector. An electron beam test facility, based on superconducting RF (SRF) TESLA-style cryomodules is currently under construction at the Fermilab New-Muon-Lab (NML) building. The first, so-called type III+, cryomodule (CM-1), equipped with eight 1.3 GHz nine-cell accelerating cavities was recently cooled down to 2 K, and is currently under RF conditioning. The transverse alignment of the cavity string within the cryomodule is crucial for minimizing transverse kick and beam break-up effects, generated by the high-order dipole modes of misaligned accelerating structures. An optimum alignment can only be guaranteed during the assembly of the cavity string, i.e. at room temperatures. The final position of the cavities after cooldown is uncontrollable, and therefore unknown. A wire position monitoring system (WPM) can help to understand the transverse motion of the cavities during cooldown, their final location and the long term position stability after cryo-temperatures are settled, as well as the position reproducibility for several cold-warm cycles. It also may serve as vibration sensor, as the wire acts as a high-Q resonant detector for mechanical vibrations in the low-audio frequency range. The WPM system consists out of a stretched-wire position detection system, provided with help of INFN-Milano and DESY Hamburg, and RF generation and read-out electronics, developed at Fermilab.

Eddy, N.; Fellenz, B.; Prieto, P.; Semenov, A.; Voy, D.C.; Wendt, M.; /Fermilab

2011-08-17T23:59:59.000Z

339

E-Print Network 3.0 - accelerator driven reactors Sample Search...  

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

of Point Kinetics for the Analysis of Accelerator Driven Systems Summary: Perturbation Theory and Reactor Kinetics: From Wigner's Pile Period to Accelerator Driven Systems,"...

340

E-Print Network 3.0 - accelerating beam stability Sample Search...  

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

(ARD) has the mission to develop accelerator Summary: between rf systems and particle beams, applications of control techniques to asses system stability... Wakefield Accelerator...

Note: This page contains sample records for the topic "accelerator system atlas" 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

E-Print Network 3.0 - ads accelerator driven Sample Search Results  

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

Systems (ADS) or Accelerator-Driven Transmutation of Wastes (ATW), integrate a subcritical... forms from ADS. 5. Conclusions Accelerator-Driven Systems open new possibilities...

342

for sequence accelerators  

E-Print Network [OSTI]

Wynn's -algorithm for sequence accelerators using high precision arithmetic Rachel Baumann University of Arizona Wynn's -algorithm for sequence accelerators using high precision arithmetic Rachel Baumann University of Arizona April 17, 2012 #12;Wynn's -algorithm for sequence accelerators using high

Zakharov, Vladimir

343

COLLECTIVE PHENOMENA IN ACCELERATORS  

E-Print Network [OSTI]

Proc. 1971 Particle Accelerator Conference, IEEE Trans. onConference on High-Energy Accelerators) 1971 (CERN, Geneva,and P. R. Zenkevich, Particle Accelerators b 1 (1972). M. S.

Sessler, Andrew M.

2008-01-01T23:59:59.000Z

344

High-Current Accelerators  

E-Print Network [OSTI]

F i g . 13 F i g . 14 A 48 ACCELERATOR F i g . 25 F i g . 16supply. Extrapolation of accelerator energy and current9 . A-48 high-current accelerator, low-velocity end. Fig.

Lawrence, Ernest O.

1955-01-01T23:59:59.000Z

345

DETECTOR CONTROL SYSTEM OF THE ATLAS INSERTABLE B-LAYER S. Kersten, P. Kind, K. Lantzsch, P. Mttig, C. Zeitnitz, Bergische Universitt Wuppertal, Germany;  

E-Print Network [OSTI]

with an emphasis on the CO2 cooling system, the power supply system, and protection strategies. As we aim to supply the detector with all entities required for operation and protect it at all times. Design, an efficient cooling system is required. Therefore a cooling pipe is integrated into each stave. An evaporative

Paris-Sud XI, Universit de

346

Accelerator Technology Division progress report, FY 1992  

SciTech Connect (OSTI)

This report briefly discusses the following topics: The Ground Test Accelerator Program; Defense Free-Electron Lasers; AXY Programs; A Next Generation High-Power Neutron-Scattering Facility; JAERI OMEGA Project and Intense Neutron Sources for Materials Testing; Advanced Free-Electron Laser Initiative; Superconducting Supercollider; The High-Power Microwave (HPM) Program; Neutral Particle Beam (NPB) Power Systems Highlights; Industrial Partnering; Accelerator Physics and Special Projects; Magnetic Optics and Beam Diagnostics; Accelerator Design and Engineering; Radio-Frequency Technology; Accelerator Theory and Free-Electron Laser Technology; Accelerator Controls and Automation; Very High-Power Microwave Sources and Effects; and GTA Installation, Commissioning, and Operations.

Schriber, S.O.; Hardekopf, R.A.; Heighway, E.A.

1993-07-01T23:59:59.000Z

347

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

348

RE Atlas | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating Solar PowerstoriesNrelPartnerType Jump to:Co Jump to:Quito,15-TX-aFD-eRE Atlas Jump

349

ATLAS 25th Anniversary Celebration  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUCProductstwrmrAre the Effects of GlobalASCR UserProgramI -ATHENA could ATLAS th

350

ATLAS Science and Technology Review  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUCProductstwrmrAre the Effects of GlobalASCR UserProgramI -ATHENA could ATLAS

351

MHK Atlas | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating Solar Powerstories on climateJunoMedanos EnergyM Communications Smart GridMCMHK Atlas

352

ATLAS Tracking Event Data Model  

E-Print Network [OSTI]

In this report the event data model (EDM) relevant for tracking in the ATLAS experiment is presented. The core component of the tracking EDM is a common track object which is suited to describe tracks in the innermost tracking sub-detectors and in the muon detectors in offline as well as online reconstruction. The design of the EDM was driven by a demand for modularity and extensibility while taking into account the different requirements of the clients. The structure of the track object and the representation of the tracking-relevant information are described in detail.

kesson, P F; Costa, M J; Elsing, M; Fleischmann, S; Gaponenko, A N; Liebig, W; Moyse, E; Salzburger, A; Siebel, M

2006-01-01T23:59:59.000Z

353

Multiorbit induction accelerators  

SciTech Connect (OSTI)

Large numbers of particles accelerated per cycle are made possible by accelerating simultaneously in several equilibrium orbits in a single betatron structure. (AIP)

Zvontsov, A.A.; Kas'yanov, V.A.; Chakhlov, V.L.

1985-09-01T23:59:59.000Z

354

Readiness of the ATLAS Liquid Argon Calorimeter for LHC Collisions  

E-Print Network [OSTI]

The ATLAS liquid argon calorimeter has been operating continuously since August 2006. At this time, only part of the calorimeter was readout, but since the beginning of 2008, all calorimeter cells have been connected to the ATLAS readout system in preparation for LHC collisions. This paper gives an overview of the liquid argon calorimeter performance measured in situ with random triggers, calibration data, cosmic muons, and LHC beam splash events. Results on the detector operation, timing performance, electronics noise, and gain stability are presented. High energy deposits from radiative cosmic muons and beam splash events allow to check the intrinsic constant term of the energy resolution. The uniformity of the electromagnetic barrel calorimeter response along eta (averaged over phi) is measured at the percent level using minimum ionizing cosmic muons. Finally, studies of electromagnetic showers from radiative muons have been used to cross-check the Monte Carlo simulation. The performance results obtained using the ATLAS readout, data acquisition, and reconstruction software indicate that the liquid argon calorimeter is well-prepared for collisions at the dawn of the LHC era.

The ATLAS Collaboration

2010-05-25T23:59:59.000Z

355

Configuration and Control of the ATLAS Trigger and Data Acquisition Giovanna Lehmann Miotto,a  

E-Print Network [OSTI]

in which major upgrades were performed and we will assess the status of the system which has been used aspects of control and configuration of the ATLAS TDAQ existed already. Vali- dation was done on small scale systems with real detector readout [3] or on large computing farms with simulated data [4]. All

Anjos, André

356

Accelerators of ELV-type Status, development, applications  

E-Print Network [OSTI]

Accelerators of ELV-type Status, development, applications In the work presented here the parameters of powerful electron accelerators of con- tinuous action are given and the main systems of the accelerator and a wide set of sup- plementary devices extending the application range of the accelerator

357

Development of fluorocarbon evaporative cooling recirculators and controls for the ATLAS inner silicon tracker  

E-Print Network [OSTI]

We report on the development of evaporative fluorocarbon cooling recirculators and their control systems for the ATLAS inner silicon tracker. We have developed a prototype circulator using a dry, hermetic compressor with C/sub 3/F/sup 8/ refrigerant, and have prototyped the remote-control analog pneumatic links for the regulation of coolant mass flows and operating temperatures that will be necessary in the magnetic field and radiation environment around ATLAS. pressure and flow measurement and control use 150+ channels of standard ATLAS LMB ("Local Monitor Board") DAQ and DACs on a multi-drop CAN network administered through a BridgeVIEW user interface. A hardwired thermal interlock system has been developed to cut power to individual silicon modules should their temperatures exceed safe values. Highly satisfactory performance of the circulator under steady state, partial-load and transient conditions was seen, with proportional fluid flow tuned to varying circuit power. Future developments, including a 6 kW...

Bayer, C; Bonneau, P; Bosteels, Michel; Burckhart, H J; Cragg, D; English, R; Hallewell, G D; Hallgren, Bjrn I; Ilie, S; Kersten, S; Kind, P; Langedrag, K; Lindsay, S; Merkel, M; Stapnes, Steinar; Thadome, J; Vacek, V

2000-01-01T23:59:59.000Z

358

Weak-Chaos Ratchet Accelerator  

E-Print Network [OSTI]

Classical Hamiltonian systems with a mixed phase space and some asymmetry may exhibit chaotic ratchet effects. The most significant such effect is a directed momentum current or acceleration. In known model systems, this effect may arise only for sufficiently strong chaos. In this paper, a Hamiltonian ratchet accelerator is introduced, featuring a momentum current for arbitrarily weak chaos. The system is a realistic, generalized kicked rotor and is exactly solvable to some extent, leading to analytical expressions for the momentum current. While this current arises also for relatively strong chaos, the maximal current is shown to occur, at least in one case, precisely in a limit of arbitrarily weak chaos.

Itzhack Dana; Vladislav B. Roitberg

2012-05-28T23:59:59.000Z

359

Centralized digital control of accelerators  

SciTech Connect (OSTI)

In contrasting the title of this paper with a second paper to be presented at this conference entitled Distributed Digital Control of Accelerators, a potential reader might be led to believe that this paper will focus on systems whose computing intelligence is centered in one or more computers in a centralized location. Instead, this paper will describe the architectural evolution of SLAC's computer based accelerator control systems with respect to the distribution of their intelligence. However, the use of the word centralized in the title is appropriate because these systems are based on the use of centralized large and computationally powerful processors that are typically supported by networks of smaller distributed processors.

Melen, R.E.

1983-09-01T23:59:59.000Z

360

I. ACCELERATION A. Introduction  

E-Print Network [OSTI]

I. ACCELERATION A. Introduction Following cooling and initial bunch compression, the beams must be rapidly accelerated. The acceleration needed for a Higgs collider is probably the most conventional part undertaken. A sequence of linacs would work, but would be expensive. Some form of circulating acceleration

McDonald, Kirk

Note: This page contains sample records for the topic "accelerator system atlas" 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

Superconducting Radiofrequency (SRF) Accelerator Cavities  

ScienceCinema (OSTI)

Charlie Reece, an accelerator technology scientist, explains how superconducting radiofrequency accelerator cavities work.

Reece, Charlie

2014-05-22T23:59:59.000Z

362

ATLAS Sensitivity to Anomalous WWV Couplings  

SciTech Connect (OSTI)

We present the strategy in extracting information on triple gauge boson couplings in WW production and summarize the expected limits on WWV couplings from the ATLAS experiment at the LHC.

Simic, Lj.; Vranjes, N.; Mendas, I.; Popovic, D. S. [Institute of Physics, Belgrade (Serbia and Montenegro)

2007-04-23T23:59:59.000Z

363

Kingdom of Saudi Arabia Solar Radiation Atlas  

SciTech Connect (OSTI)

This atlas provides a record of monthly mean solar radiation generated by a Climatological Solar Radiation model, using quasi-climatological inputs of cloud cover, aerosol optical depth, precipitable water vapor, ozone, surface albedo, and atmospheric pressure.

NREL

1998-12-16T23:59:59.000Z

364

Multimodality Imaging Atlas of Coronary Atherosclerosis  

E-Print Network [OSTI]

NEW HIGH-RESOLUTION IMAGING TECHNOLOGIES HAVE ENHANCED OUR UNDERSTANDING OF THE CORONARY atherosclerotic disease process, and this atlas provides a multimodality pictorial review of the development of histologically verified ...

Donnelly, Patrick

365

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

366

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

367

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

368

Laser plasma accelerators  

SciTech Connect (OSTI)

This review article highlights the tremendous evolution of the research on laser plasma accelerators which has, in record time, led to the production of high quality electron beams at the GeV level, using compact laser systems. I will describe the path we followed to explore different injection schemes and I will present the most significant breakthrough which allowed us to generate stable, high peak current and high quality electron beams, with control of the charge, of the relative energy spread and of the electron energy.

Malka, V. [Laboratoire d'Optique Appliquee, ENSTA-ParisTech, CNRS, Ecole Polytechnique, UMR 7639, 91761 Palaiseau (France)

2012-05-15T23:59:59.000Z

369

Radiologic atlas of rheumatic diseases  

SciTech Connect (OSTI)

This book is an ''atlas of rheumatic joint disease'' selected from 20 years of personal experience by the author. The author sets a goal of demonstrating the value of soft-tissue imaging in the diagnosis of early joint disease. This goal is achieved with high quality reproductions, many of which are presented in duplicate to illustrate bone and soft-tissue changes. The contents include an introductory overview of the ''Mosaic of Arthritis'' followed by sections on adult rheumatoid arthritis, seronegative spondyloarthropathies, classic collagen disease, enthesiopathies, and lastly a section on gout and psuedogout. The subject index is specific and indexes figures with boldface type. Each section is introduced by a brief outline or overview of the radiographic spectrum of the joint disorder to be illustrated.

Dihlmann, W.

1986-01-01T23:59:59.000Z

370

APT accelerator. Topical report  

SciTech Connect (OSTI)

The Accelerator Production of Tritium (APT) project, sponsored by Department of Energy Defense Programs (DOE/DP), involves the preconceptual design of an accelerator system to produce tritium for the nation`s stockpile of nuclear weapons. Tritium is an isotope of hydrogen used in nuclear weapons, and must be replenished because of radioactive decay (its half-life is approximately 12 years). Because the annual production requirements for tritium has greatly decreased since the end of the Cold War, an alternative approach to reactors for tritium production, based on a linear accelerator, is now being seriously considered. The annual tritium requirement at the time this study was undertaken (1992-1993) was 3/8 that of the 1988 goal, usually stated as 3/8-Goal. Continued reduction in the number of weapons in the stockpile has led to a revised (lower) production requirement today (March, 1995). The production requirement needed to maintain the reduced stockpile, as stated in the recent Nuclear Posture Review (summer 1994) is approximately 3/16-Goal, half the previous level. The Nuclear Posture Review also requires that the production plant be designed to accomodate a production increase (surge) to 3/8-Goal capability within five years, to allow recovery from a possible extended outage of the tritium plant. A multi-laboratory team, collaborating with several industrial partners, has developed a preconceptual APT design for the 3/8-Goal, operating at 75% capacity. The team has presented APT as a promising alternative to the reactor concepts proposed for Complex-21. Given the requirements of a reduced weapons stockpile, APT offers both significant safety, environmental, and production-fexibility advantages in comparison with reactor systems, and the prospect of successful development in time to meet the US defense requirements of the 21st Century.

Lawrence, G.; Rusthoi, D. [comp.] [ed.

1995-03-01T23:59:59.000Z

371

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

372

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

373

Measurements of Heavy Flavour Production at ATLAS and CMS  

E-Print Network [OSTI]

New and updated (after the previous Moriond QCD) ATLAS and CMS results on heavy flavour production are reviewed.

Gladilin, Leonid; The ATLAS collaboration

2015-01-01T23:59:59.000Z

374

A three dimensional simulation of a thermal experiment conducted on an accelerator driven system target model concept  

E-Print Network [OSTI]

dynamics (CFD). The benchmark for the model comparison is an experiment conducted by the Institute of Physics and Power Engineering on one particular ATW system concept. The experimenters used thermocouples to determine the temperature profile...

Pratt, Preston Persley

2003-01-01T23:59:59.000Z

375

Derivation of Hamiltonians for accelerators  

SciTech Connect (OSTI)

In this report various forms of the Hamiltonian for particle motion in an accelerator will be derived. Except where noted, the treatment will apply generally to linear and circular accelerators, storage rings, and beamlines. The generic term accelerator will be used to refer to any of these devices. The author will use the usual accelerator coordinate system, which will be introduced first, along with a list of handy formulas. He then starts from the general Hamiltonian for a particle in an electromagnetic field, using the accelerator coordinate system, with time t as independent variable. He switches to a form more convenient for most purposes using the distance s along the reference orbit as independent variable. In section 2, formulas will be derived for the vector potentials that describe the various lattice components. In sections 3, 4, and 5, special forms of the Hamiltonian will be derived for transverse horizontal and vertical motion, for longitudinal motion, and for synchrobetatron coupling of horizontal and longitudinal motions. Hamiltonians will be expanded to fourth order in the variables.

Symon, K.R.

1997-09-12T23:59:59.000Z

376

The ATLAS DDM Tracer monitoring framework  

E-Print Network [OSTI]

The DDM Tracer Service is aimed to trace and monitor the atlas file operations on the Worldwide LHC Computing Grid. The volume of traces has increased significantly since the service started in 2009. Now there are about ~5 million trace messages every day and peaks of greater than 250Hz, with peak rates continuing to climb, which gives the current service structure a big challenge. Analysis of large datasets based on on-demand queries to the relational database management system (RDBMS), i.e. Oracle, can be problematic, and have a significant effect on the database's performance. Consequently, We have investigated some new high availability technologies like messaging infrastructure, specifically ActiveMQ, and key-value stores. The advantages of key value store technology are that they are distributed and have high scalability; also their write performances are usually much better than RDBMS, all of which are very useful for the Tracer service. Indexes and distributed counters have been also tested to improve...

ZANG, D; The ATLAS collaboration; BARISITS, M; LASSNIG, M; Andrew STEWART, G; MOLFETAS, A; BEERMANN, T

2012-01-01T23:59:59.000Z

377

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

378

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

379

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: Japan sea; Ocean chemistry; Ocean atlas; Marginal seas; Water masses 1. Introduction The Japan or East (Talley et al., 2004a). Here we present a comprehensive atlas of the methods and property distributions

Talley, Lynne D.

380

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

Note: This page contains sample records for the topic "accelerator system atlas" 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

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

382

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.

383

Controlled Lagrangian Methods and Tracking of Accelerated Motions  

E-Print Network [OSTI]

Controlled Lagrangian Methods and Tracking of Accelerated Motions Dmitry V. Zenkov* Department of uniformly accelerated motions of mechanical systems with symmetry. The theory is illustrated with a simple- grangians to the problem of stabilization of accelerated motions of Lagrangian mechanical systems with symme

Marsden, Jerrold

384

Controlled Lagrangian Methods and Tracking of Accelerated Motions  

E-Print Network [OSTI]

Controlled Lagrangian Methods and Tracking of Accelerated Motions Dmitry V. Zenkov* Department of uniformly accelerated motions of mechanical systems with symmetry. The theory is illustrated with a simple- grangians to the problem of stabilization of accelerated motions of Lagrangian mechanical systems

Zenkov, Dmitry

385

E-Print Network 3.0 - accelerator-driven targets understanding...  

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

Carlo modeling of an experimental Accelerator Driven System (ADS), which employs a subcritical assembly... ., On Accelerator Driven Transmutation ... Source: Magiera, Andrzej -...

386

E-Print Network 3.0 - accelerator driven radioactive Sample Search...  

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

- so called Accelerator-Driven System (ADS). An external neutron source and subcritical operation open... new possibilities for transmutation. ACCELERATOR-DRIVEN...

387

E-Print Network 3.0 - accelerator-driven experiment trade Sample...  

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

- so called Accelerator-Driven System (ADS). An external neutron source and subcritical operation open... new possibilities for transmutation. ACCELERATOR-DRIVEN...

388

Community Petascale Project for Accelerator Science and Simulation: Advancing Computational Science for Future Accelerators and Accelerator Technologies  

SciTech Connect (OSTI)

The design and performance optimization of particle accelerators are essential for the success of the DOE scientific program in the next decade. Particle accelerators are very complex systems whose accurate description involves a large number of degrees of freedom and requires the inclusion of many physics processes. Building on the success of the SciDAC-1 Accelerator Science and Technology project, the SciDAC-2 Community Petascale Project for Accelerator Science and Simulation (ComPASS) is developing a comprehensive set of interoperable components for beam dynamics, electromagnetics, electron cooling, and laser/plasma acceleration modelling. ComPASS is providing accelerator scientists the tools required to enable the necessary accelerator simulation paradigm shift from high-fidelity single physics process modeling (covered under SciDAC1) to high-fidelity multiphysics modeling. Our computational frameworks have been used to model the behavior of a large number of accelerators and accelerator R&D experiments, assisting both their design and performance optimization. As parallel computational applications, the ComPASS codes have been shown to make effective use of thousands of processors. ComPASS is in the first year of executing its plan to develop the next-generation HPC accelerator modeling tools. ComPASS aims to develop an integrated simulation environment that will utilize existing and new accelerator physics modules with petascale capabilities, by employing modern computing and solver technologies. The ComPASS vision is to deliver to accelerator scientists a virtual accelerator and virtual prototyping modeling environment, with the necessary multiphysics, multiscale capabilities. The plan for this development includes delivering accelerator modeling applications appropriate for each stage of the ComPASS software evolution. Such applications are already being used to address challenging problems in accelerator design and optimization. The ComPASS organization for software development and applications accounts for the natural domain areas (beam dynamics, electromagnetics, and advanced acceleration), and all areas depend on the enabling technologies activities, such as solvers and component technology, to deliver the desired performance and integrated simulation environment. The ComPASS applications focus on computationally challenging problems important for design or performance optimization to all major HEP, NP, and BES accelerator facilities. With the cost and complexity of particle accelerators rising, the use of computation to optimize their designs and find improved operating regimes becomes essential, potentially leading to significant cost savings with modest investment.

Spentzouris, P.; /Fermilab; Cary, J.; /Tech-X, Boulder; McInnes, L.C.; /Argonne; Mori, W.; /UCLA; Ng, C.; /SLAC; Ng, E.; Ryne, R.; /LBL, Berkeley

2011-11-14T23:59:59.000Z

389

TURKISH ACCELERATOR COMPLEX & STATUS OF TAC SASE FEL  

E-Print Network [OSTI]

Facility Study Group (Director: Dr. B. Akku) #12;International collaborations & contacts 8 ATLAS, CMS collaboration & project team Proposed facilities and study groups Committees & collaborations TAC-TARLA Facility TARLA Resonator System TAC SASE-FEL Group Members & Duties TAC SASE-FEL Tentative Parameters

390

Search for WW and WZ production in lepton, neutrino plus jets final states at CDF Run II and Silicon module production and detector control system for the ATLAS SemiConductor Tracker  

SciTech Connect (OSTI)

In the first part of this work, we present a search for WW and WZ production in charged lepton, neutrino plus jets final states produced in p{bar p} collisions with {radical}s = 1.96 TeV at the Fermilab Tevatron, using 1.2 fb{sup -1} of data accumulated with the CDF II detector. This channel is yet to be observed in hadron colliders due to the large singleWplus jets background. However, this decay mode has a much larger branching fraction than the cleaner fully leptonic mode making it more sensitive to anomalous triple gauge couplings that manifest themselves at higher transverse W momentum. Because the final state is topologically similar to associated production of a Higgs boson with a W, the techniques developed in this analysis are also applicable in that search. An Artificial Neural Network has been used for the event selection optimization. The theoretical prediction for the cross section is {sigma}{sub WW/WZ}{sup theory} x Br(W {yields} {ell}{nu}; W/Z {yields} jj) = 2.09 {+-} 0.14 pb. They measured N{sub Signal} = 410 {+-} 212(stat) {+-} 102(sys) signal events that correspond to a cross section {sigma}{sub WW/WZ} x Br(W {yields} {ell}{nu}; W/Z {yields} jj) = 1.47 {+-} 0.77(stat) {+-} 0.38(sys) pb. The 95% CL upper limit to the cross section is estimated to be {sigma} x Br(W {yields} {ell}{nu}; W/Z {yields} jj) < 2.88 pb. The second part of the present work is technical and concerns the ATLAS SemiConductor Tracker (SCT) assembly phase. Although technical, the work in the SCT assembly phase is of prime importance for the good performance of the detector during data taking. The production at the University of Geneva of approximately one third of the silicon microstrip end-cap modules is presented. This collaborative effort of the university of Geneva group that lasted two years, resulted in 655 produced modules, 97% of which were good modules, constructed within the mechanical and electrical specifications and delivered in the SCT collaboration for assembly on the end-cap disks. The SCT end-caps and barrels consist of 4088 silicon modules, with a total of 6.3 million readout channels. The coherent and safe operation of the SCT during commissioning and subsequent operation is the essential task of the Detector Control System (DCS). The main building blocks of the DCS are the cooling system, the power supplies and the environmental system. The DCS has been initially developed for the SCT assembly phase and this system is described in the present work. Particular emphasis is given in the environmental hardware and software components, that were my major contributions. Results from the DCS testing during the assembly phase are also reported.

Sfyrla, Anna; /Geneva U.

2008-03-01T23:59:59.000Z

391

Accelerator R&D  

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

(505) 667-5657 Email Accelerator R&D R&D model Figure 1: Conceptual drawing of a superconducting radio-frequency accelerator with a PBG coupler cell. The ultimate goal of this...

392

History of Proton Linear Accelerators  

E-Print Network [OSTI]

much. References 1. Linear Accelerators, edited by P. M .at the 1986 Linear Accelerator Conference, SLAC, Stanford,HISTORY OF PROTON LINEAR ACCELERATORS Luis W. Alvarez TWO-

Alvarez, Luis W.

1987-01-01T23:59:59.000Z

393

LARGE-APERTURE D- ACCELERATORS  

E-Print Network [OSTI]

Vignetted current profile at accelerator entrance aperture 'LARGE-APERTURE D" ACCELERATORS* 0. A. Anderson" " Lawrencen i a 9-1720 Abstract Accelerator designs are described for

Anderson, O.A.

2010-01-01T23:59:59.000Z

394

Beam Dynamics for Induction Accelerators  

E-Print Network [OSTI]

Dynamics for Induction Accelerators Edward P. Lee Lawrencea natural candidate accelerator for a heavy ion fusion (HIF)words: Fusion, Induction, Accelerators, Dynamics This work

Lee, E.P.

2014-01-01T23:59:59.000Z

395

ALFA Detector Control System  

E-Print Network [OSTI]

ALFA (Absolute Luminosity For ATLAS) is one of the sub-detectors of ATLAS/LHC. The ALFA system is composed by two stations installed in the LHC tunnel 240 m away from each side of the ATLAS interaction point. Each station has a vacuum and ventilation system, movement control and all the required electronic for signal processing. The Detector Control System (DCS) provides control and monitoring of several components and ensures the safe operation of the detector contributing to good Data Quality. This paper describes the ALFA DCS system including a detector overview, operation aspects and hardware control through a SCADA system, WinCC OA.

Oleiro Seabra, Luis Filipe; The ATLAS collaboration

2015-01-01T23:59:59.000Z

396

High-brightness H/sup -/ accelerators  

SciTech Connect (OSTI)

Neutral particle beam (NPB) devices based on high-brightness H/sup -/ accelerators are an important component of proposed strategic defense systems. The basic rationale and R and D program are outlined and examples given of the underlying technology thrusts toward advanced systems. Much of the research accomplished in the past year is applicable to accelerator systems in general; some of these activities are discussed.

Jameson, R.A.

1987-01-01T23:59:59.000Z

397

YALINA facility a sub-critical Accelerator- Driven System (ADS) for nuclear energy research facility description and an overview of the research program (1997-2008).  

SciTech Connect (OSTI)

The YALINA facility is a zero-power, sub-critical assembly driven by a conventional neutron generator. It was conceived, constructed, and put into operation at the Radiation Physics and Chemistry Problems Institute of the National Academy of Sciences of Belarus located in Minsk-Sosny, Belarus. This facility was conceived for the purpose of investigating the static and dynamic neutronics properties of accelerator driven sub-critical systems, and to serve as a neutron source for investigating the properties of nuclear reactions, in particular transmutation reactions involving minor-actinide nuclei. This report provides a detailed description of this facility and documents the progress of research carried out there during a period of approximately a decade since the facility was conceived and built until the end of 2008. During its history of development and operation to date (1997-2008), the YALINA facility has hosted several foreign groups that worked with the resident staff as collaborators. The participation of Argonne National Laboratory in the YALINA research programs commenced in 2005. For obvious reasons, special emphasis is placed in this report on the work at YALINA facility that has involved Argonne's participation. Attention is given here to the experimental program at YALINA facility as well as to analytical investigations aimed at validating codes and computational procedures and at providing a better understanding of the physics and operational behavior of the YALINA facility in particular, and ADS systems in general, during the period 1997-2008.

Gohar, Y.; Smith, D. L.; Nuclear Engineering Division

2010-04-28T23:59:59.000Z

398

USENIX Association NSDI '11: 8th USENIX Symposium on Networked Systems Design and Implementation 1 SSLShader: Cheap SSL Acceleration with Commodity Processors  

E-Print Network [OSTI]

SSLShader: Cheap SSL Acceleration with Commodity Processors Keon Jang+, Sangjin Han+, Seungyeop Han*, Sue. Unfortunately, today's SSL deployment is largely limited to security or privacy- critical domains. The low, and the cost of good privacy on the Internet is tightly bound to expensive hardware SSL accelerators

Moon, Sue B.

399

Commnity Petascale Project for Accelerator Science And Simulation: Advancing Computational Science for Future Accelerators And Accelerator Technologies  

SciTech Connect (OSTI)

The design and performance optimization of particle accelerators are essential for the success of the DOE scientific program in the next decade. Particle accelerators are very complex systems whose accurate description involves a large number of degrees of freedom and requires the inclusion of many physics processes. Building on the success of the SciDAC-1 Accelerator Science and Technology project, the SciDAC-2 Community Petascale Project for Accelerator Science and Simulation (ComPASS) is developing a comprehensive set of interoperable components for beam dynamics, electromagnetics, electron cooling, and laser/plasma acceleration modelling. ComPASS is providing accelerator scientists the tools required to enable the necessary accelerator simulation paradigm shift from high-fidelity single physics process modeling (covered under SciDAC1) to high-fidelity multiphysics modeling. Our computational frameworks have been used to model the behavior of a large number of accelerators and accelerator R&D experiments, assisting both their design and performance optimization. As parallel computational applications, the ComPASS codes have been shown to make effective use of thousands of processors.

Spentzouris, Panagiotis; /Fermilab; Cary, John; /Tech-X, Boulder; Mcinnes, Lois Curfman; /Argonne; Mori, Warren; /UCLA; Ng, Cho; /SLAC; Ng, Esmond; Ryne, Robert; /LBL, Berkeley

2011-10-21T23:59:59.000Z

400

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 "accelerator system atlas" 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 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.

402

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

403

E-Print Network 3.0 - accelerated type biological Sample Search...  

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

systems biology applications... acceleration. Index Terms--Biological Systems, Simulation, ... Source: Skadron, Kevin - Department of Computer Science, University of Virginia...

404

E-Print Network 3.0 - acceleration type biological Sample Search...  

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

systems biology applications... acceleration. Index Terms--Biological Systems, Simulation, ... Source: Skadron, Kevin - Department of Computer Science, University of Virginia...

405

Automated Transportation Logistics and Analysis System (ATLAS)  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustionImprovement3--Logistical5/08 Attendance List1-02Evaluation Report(AO)

406

Heavy-Ion Fusion Accelerator Research, 1991  

SciTech Connect (OSTI)

This report discusses the following topics: research with multiple- beam experiment MBE-4; induction linac systems experiments; and long- range research and development of heavy-ion fusion accelerators.

Not Available

1992-03-01T23:59:59.000Z

407

PRODUCTION AND APPLICATIONS OF NEUTRONS USING PARTICLE ACCELERATORS  

SciTech Connect (OSTI)

Advances in neutron science have gone hand in hand with the development and of particle accelerators from the beginning of both fields of study. Early accelerator systems were developed simply to produce neutrons, allowing scientists to study their properties and how neutrons interact in matter, but people quickly realized that more tangible uses existed too. Today the diversity of applications for industrial accelerator-based neutron sources is high and so to is the actual number of instruments in daily use is high, and they serve important roles in the fields where they're used. This chapter presents a technical introduction to the different ways particle accelerators are used to produce neutrons, an historical overview of the early development of neutron-producing particle accelerators, a description of some current industrial accelerator systems, narratives of the fields where neutron-producing particle accelerators are used today, and comments on future trends in the industrial uses of neutron producing particle accelerators.

David L. Chichester

2009-11-01T23:59:59.000Z

408

Neural Network-Based Accelerators for Transcendental Function Approximation  

E-Print Network [OSTI]

Neural Network-Based Accelerators for Transcendental Function Approximation Schuyler Eldridge accelerators has the potential to sustain the his- toric energy and performance improvements of computing systems. We propose the use of NN-based accelerators to approximate mathematical functions in the GNU C

Joshi, Ajay

409

HybridOS: Runtime Support for Reconfigurable Accelerators  

E-Print Network [OSTI]

HybridOS: Runtime Support for Reconfigurable Accelerators John H. Kelm Dept. of Electrical for supporting fine-grained reconfigurable accelerators integrated with general-purpose computing platforms for a CPU/accelerator model when running a com- modity operating system. HybridOS provides a simple API

Lumetta, Steve

410

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

411

Prospects for studies of high-energy solar cosmic rays with ATLAS  

E-Print Network [OSTI]

The ATLAS detector is intended to verify the standard model and to search for new physics at the Large Hadron Collider (LHC, CERN). In addition to this primary goal, it also allows detection of muons of cosmic rays. On the other hand, unusual bursts of the muon intensity, which correlate with powerful solar flares were recorded and investigated earlier at the Baksan Underground Scintillation Telescope (BUST, INR, Russia) in period from 1981 to 2006 (~2.5 solar cycles). The nature of the muon bursts and their probable relation to the solar cosmic rays is still not quite clear. ATLAS has an excellent muon system allowing search for similar muon bursts. Within the next few years, when the LHC and ATLAS should start to operate, an increase in the solar activity is expected in the new 24th cycle. It increases the probability of finding the muon bursts from powerful flares. Hence ATLAS has a good opportunity to verify the relation of muon bursts to the solar cosmic rays.

S. N. Karpov; Z. M. Karpova; V. A. Bednyakov

2008-11-18T23:59:59.000Z

412

The B00 model coil in the ATLAS Magnet Test Facility  

E-Print Network [OSTI]

A 1-m size model coil has been developed to investigate the transport properties of the three aluminum-stabilized superconductors used in the ATLAS magnets. The coil, named B00, is also used for debugging the cryogenic, power and control systems of the ATLAS Magnet Test Facility. The coil comprises two double pancakes made of the barrel toroid and end-cap toroid conductors and a single pancake made of the central solenoid conductor. The pancakes are placed inside an aluminum coil casing. The coil construction and cooling conditions are quite similar to the final design of the ATLAS magnets. The B00 coil is well equipped with various sensors to measure thermal and electrodynamic properties of the conductor inside the coils. Special attention has been paid to the study of the current diffusion process and the normal zone propagation in the ATLAS conductors and windings. Special pick-up coils have been made to measure the diffusion at different currents and magnetic field values. (6 refs).

Dudarev, A; ten Kate, H H J; Anashkin, O P; Keilin, V E; Lysenko, V V

2001-01-01T23:59:59.000Z

413

Implementation and Performance of the ATLAS Second Level Jet Trigger  

E-Print Network [OSTI]

ATLAS is one of the four major LHC experiments, designed to cover a wide range of physics topics. In order to cope with a rate of 40 MHz and 25 interactions per bunch crossing, the ATLAS trigger system is divided in three different levels. The first one (LVL1, hardware based) identifies signatures in 2 microseconds that are confirmed by the the following trigger levels (software based). The Second Level Trigger (LVL2) only looks at a region of the space around the LVL1 signature (called Region of Interest or ROI), confirming/rejecting the event in about 10 ms, while the Event Filter (Third Level Trigger, EF) has potential full event access and larger processing times, of the order of 1 s. The jet selection starts at the LVL1 with dedicated processors that search for high ET hadronic energy depositions. At the LVL2, the jet signatures are verified with the execution of a dedicated, fast jet reconstruction algorithm. Given the fact that the main jet's background are jets,the energy calibration at the LVL2 is on...

Conde-Muo, P; Brelier, B; Cranmer, K; Delsart, P A; Dufour, M A; Eckweiler, S; Ferland, J; Idarraga, J; Johns, K; LeCompte, T; Potter, C; Robertson, S; Santamarina-Rios, C; Segura, E; Silverstein, D; Vachon, B; International Conference on Computing in High Energy and Nuclear Physics

2008-01-01T23:59:59.000Z

414

Nearshore Fish Atlas of Alaska INTRODUCTION  

E-Print Network [OSTI]

and Management Act of 1996 requires the identification of essential fish habitat (EFH) for species included, and the Arctic. MATERIALS AND METHODS Catch data in this atlas were compiled from a suite of studies in the same year or in different years. A geographic position is obtained in the middle of each seine site

415

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

416

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.

417

Recent QCD-related results from ATLAS  

E-Print Network [OSTI]

In this presentation I will give a review of QCD-related results obtained and published by ATLAS. I will cover measurement results constraining parton distribution functions, soft and hard partonic resummation, higher order matrix element calculations, their matching to parton shower, and vector boson plus heavy flavor jets.

Beauchemin, Pierre-Hugues; The ATLAS collaboration

2015-01-01T23:59:59.000Z

418

Optically pulsed electron accelerator  

DOE Patents [OSTI]

An optically pulsed electron accelerator can be used as an injector for a free electron laser and comprises a pulsed light source, such as a laser, for providing discrete incident light pulses. A photoemissive electron source emits electron bursts having the same duration as the incident light pulses when impinged upon by same. The photoemissive electron source is located on an inside wall of a radiofrequency-powered accelerator cell which accelerates the electron burst emitted by the photoemissive electron source.

Fraser, J.S.; Sheffield, R.L.

1985-05-20T23:59:59.000Z

419

Underlying event studies at ATLAS and CDF  

SciTech Connect (OSTI)

Improving our understanding and modeling of the underlying event in high energy collider environment is important for more precise measurements at the LHC. CDF Run II data for the underlying event associated with Drell-Yan lepton pair production and early ATLAS data measuring underlying event activity with respect to the leading transverse momentum track are presented. The data are compared with several QCD Monte Carlo models. It is seen that no current standard Monte Carlo tune adequately describes all the early ATLAS data and CDF data simultaneously. The underlying event observables presented here are particularly important for constraining the energy evolution of multiple parton interaction models. One of the goals of these analyses is to provide data that can be used to test and improve MC models for current and future physics studies at the LHC. The underlying event observables presented here are particularly important for constraining the energy evolution of multiple partonic interaction models, since the plateau heights of the underlying event profiles are highly correlated to multiple parton interaction activity. The data at 7 TeV are crucial for MC tuning, since measurements are needed with at least two energies to constrain the energy evolution of MPI activity. PYTHIA tune A and tune AW do a good job in describing the CDF data on the underlying-event observables for leading jet and Drell-Yan events, respectively, although the agreement between predictions and data is not perfect. The leading-jet data show slightly more activity in the underlying event than PYTHIA Tune A, although they are very similar - which may indicate the universality of underlying event modeling. However, all pre-LHC MC models predict less activity in the transverse region (i.e in the underlying event) than is actually observed in ATLAS leading track data, for both center-of-mass energies. There is therefore no current standard MC tune which adequately describes all the early ATLAS data. However, using diffraction-limited minimum bias distributions and the plateau of the underlying event distributions presented here, ATLAS has developed a new PYTHIA tune AMBT1 (ATLAS Minimum Bias Tune 1) and a new HERWIG+ JIMMY tune AUET1 (ATLAS Underlying Event Tune 1) which model the p{sub T} and charged multiplicity spectra significantly better than the pre-LHC tunes of those generators. It is critical to have sensible underlying event models containing our best physical knowledge and intuition, tuned to all relevant available data.

Kar, D.; /Dresden, Tech. U.

2011-01-01T23:59:59.000Z

420

Muon Collider Progress: Accelerators  

E-Print Network [OSTI]

A muon collider would be a powerful tool for exploring the energy-frontier with leptons, and would complement the studies now under way at the LHC. Such a device would offer several important benefits. Muons, like electrons, are point particles so the full center-of-mass energy is available for particle production. Moreover, on account of their higher mass, muons give rise to very little synchrotron radiation and produce very little beamstrahlung. The first feature permits the use of a circular collider that can make efficient use of the expensive rf system and whose footprint is compatible with an existing laboratory site. The second feature leads to a relatively narrow energy spread at the collision point. Designing an accelerator complex for a muon collider is a challenging task. Firstly, the muons are produced as a tertiary beam, so a high-power proton beam and a target that can withstand it are needed to provide the required luminosity of ~1 \\times 10^34 cm^-2s^-1. Secondly, the beam is initially produced with a large 6D phase space, which necessitates a scheme for reducing the muon beam emittance ("cooling"). Finally, the muon has a short lifetime so all beam manipulations must be done very rapidly. The Muon Accelerator Program, led by Fermilab and including a number of U.S. national laboratories and universities, has undertaken design and R&D activities aimed toward the eventual construction of a muon collider. Design features of such a facility and the supporting R&D program are described.

Michael S. Zisman

2011-09-14T23:59:59.000Z

Note: This page contains sample records for the topic "accelerator system atlas" 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

Market Acceleration (Fact Sheet)  

SciTech Connect (OSTI)

The fact sheet summarizes the goals and activities of the DOE Solar Energy Technologies Program efforts within its market acceleration subprogram.

Not Available

2010-09-01T23:59:59.000Z

422

The European Solar Radiation Atlas 1 Page J., M. Albuisson, L. Wald, 2001. The European solar radiation atlas: a valuable digital tool. Solar Energy,  

E-Print Network [OSTI]

The European Solar Radiation Atlas 1 Page J., M. Albuisson, L. Wald, 2001. The European solar radiation atlas: a valuable digital tool. Solar Energy, 71, 81-83, 2001.1 The European Solar Radiation Atlas European Solar Radiation Atlas (ESRA) is now available. It is published by Les Presses de l'Ecole des Mines

Paris-Sud XI, Université de

423

Nonparaxial Mathieu and Weber accelerating beams  

E-Print Network [OSTI]

We demonstrate both theoretically and experimentally nonparaxial Mathieu and Weber accelerating beams, generalizing the concept of previously found accelerating beams. We show that such beams bend into large angles along circular, elliptical or parabolic trajectories but still retain nondiffracting and self-healing capabilities. The circular nonparaxial accelerating beams can be considered as a special case of the Mathieu accelerating beams, while an Airy beam is only a special case of the Weber beams at the paraxial limit. Not only generalized nonparaxial accelerating beams open up many possibilities of beam engineering for applications, but the fundamental concept developed here can be applied to other linear wave systems in nature, ranging from electromagnetic and elastic waves to matter waves.

Peng Zhang; Yi Hu; Tongcang Li; Drake Cannan; Xiaobo Yin; Roberto Morandotti; Zhigang Chen; Xiang Zhang

2012-10-23T23:59:59.000Z

424

Machine Protection: Availability for Particle Accelerators  

E-Print Network [OSTI]

Machine availability is a key indicator for the performance of the next generation of particle accelerators. Availability requirements need to be carefully considered during the design phase to achieve challenging objectives in different fields, as e.g. particle physics and material science. For existing and future High-Power facilities, such as ESS (European Spallation Source) and HL-LHC (High-Luminosity LHC), operation with unprecedented beam power requires highly dependable Machine Protection Systems (MPS) to avoid any damage-induced downtime. Due to the high complexity of accelerator systems, finding the optimal balance between equipment safety and accelerator availability is challenging. The MPS architecture, as well as the choice of electronic components, have a large influence on the achievable level of availability. In this thesis novel methods to address the availability of accelerators and their protection systems are presented. Examples of studies related to dependable MPS architectures are given i...

Apollonio, Andrea; Schmidt, Ruediger

2015-03-16T23:59:59.000Z

425

PanDA Beyond ATLAS: Workload Management for Data Intensive Science  

E-Print Network [OSTI]

The PanDA Production ANd Distributed Analysis system has been developed by ATLAS to meet the experiment's requirements for a data-driven workload management system for production and distributed analysis processing capable of operating at LHC data processing scale. After 7 years of impressively successful PanDA operation in ATLAS there are also other experiments which can benefit from PanDA in the Big Data challenge, with several at various stages of evaluation and adoption. The new project "Next Generation Workload Management and Analysis System for Big Data" is extending PanDA to meet the needs of other data intensive scientific applications in HEP, astro-particle and astrophysics communities, bio-informatics and other fields as a general solution to large scale workload management. PanDA can utilize dedicated or opportunistic computing resources such as grids, clouds, and High Performance Computing facilities, and is being extended to leverage next generation intelligent networks in automated workflow mana...

Schovancova, J; The ATLAS collaboration; Klimentov, A; Maeno, T; Nilsson, P; Oleynik, D; Panitkin, S; Petrosyan, A; Vaniachine, A; Wenaus, T; Yu, D

2013-01-01T23:59:59.000Z

426

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...

427

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...

428

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...

429

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

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

muons events. 7. Conclusions The ATLAS LAr calorimeter... and installed in the ATLAS cavern during the last five years. The most ... Source: Ecole Polytechnique, Centre de...

430

E-Print Network 3.0 - atlas hadronic barrel Sample Search Results  

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... Calorimeter (EMB) The ATLAS...

431

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

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... Calorimeter (EMB) The ATLAS...

432

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...

433

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:...

434

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

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... Calorimeter (EMB) The ATLAS...

435

E-Print Network 3.0 - atlas barrel calorimeter 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... Calorimeter (EMB) The ATLAS...

436

E-Print Network 3.0 - atlas computers Sample Search Results  

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

generally through Open Science Grid. We have deployed a high performance computing facility (the ATLAS... ATLAS provides roughly 30% of the overall computing ... Source:...

437

E-Print Network 3.0 - atlas full power Sample Search Results  

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

of ATLAS to date and plans Source: Norris, Ray - Australia Telescope National Facility, CSIRO Collection: Physics 11 ATLAS Installation Guide R. Clint Whaley Summary: ,...

438

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...

439

E-Print Network 3.0 - atlas semi-conductor 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 semi-conductor tracker Page: << < 1 2 3 4 5 > >> 1 ATLAS 1 Transition Radiation...

440

E-Print Network 3.0 - atlas rewards industry 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 rewards industry Page: << < 1 2 3 4 5 > >> 1 UKERC Research Atlas: Tutorial on "Search...

Note: This page contains sample records for the topic "accelerator system atlas" 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

E-Print Network 3.0 - atlas silicon strip Sample Search Results  

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

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

442

E-Print Network 3.0 - atlas transition radiation 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 transition radiation Page: << < 1 2 3 4 5 > >> 1 Lund University -the ATLAS group...

443

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...

444

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:...

445

Repair of overheating linear accelerator  

SciTech Connect (OSTI)

Los Alamos Neutron Science Center (LANSCE) is a proton accelerator that produces high energy particle beams for experiments. These beams include neutrons and protons for diverse uses including radiography, isotope production, small feature study, lattice vibrations and material science. The Drift Tube Linear Accelerator (DTL) is the first portion of a half mile long linear section of accelerator that raises the beam energy from 750 keV to 100 MeV. In its 31st year of operation (2003), the DTL experienced serious issues. The first problem was the inability to maintain resonant frequency at full power. The second problem was increased occurrences of over-temperature failure of cooling hoses. These shortcomings led to an investigation during the 2003 yearly preventative maintenance shutdown that showed evidence of excessive heating: discolored interior tank walls and coper oxide deposition in the cooling circuits. Since overheating was suspected to be caused by compromised heat transfer, improving that was the focus of the repair effort. Investigations revealed copper oxide flow inhibition and iron oxide scale build up. Acid cleaning was implemented with careful attention to protection of the base metal, selection of components to clean and minimization of exposure times. The effort has been very successful in bringing the accelerator through a complete eight month run cycle allowing an incredible array of scientific experiments to be completed this year (2003-2004). This paper will describe the systems, investigation analysis, repair, return to production and conclusion.

Barkley, Walter; Baldwin, William; Bennett, Gloria; Bitteker, Leo; Borden, Michael; Casados, Jeff; Fitzgerald, Daniel; Gorman, Fred; Johnson, Kenneth; Kurennoy, Sergey; Martinez, Alberto; OHara, James; Perez, Edward; Roller, Brandon; Rybarcyk, Lawrence; Stark, Peter; Stockton, Jerry

2004-01-01T23:59:59.000Z

446

Accelerators, Beams And Physical Review Special Topics - Accelerators And Beams  

SciTech Connect (OSTI)

Accelerator science and technology have evolved as accelerators became larger and important to a broad range of science. Physical Review Special Topics - Accelerators and Beams was established to serve the accelerator community as a timely, widely circulated, international journal covering the full breadth of accelerators and beams. The history of the journal and the innovations associated with it are reviewed.

Siemann, R.H.; /SLAC

2011-10-24T23:59:59.000Z

447

Acceleration Worksheet 8/24/2011 ACCELERATION WORKSHEET  

E-Print Network [OSTI]

Acceleration Worksheet 8/24/2011 ACCELERATION WORKSHEET College of Arts and Sciences Name _____________ TO _____________ month/year month/year II. I meet the requirements for acceleration under [fill out either a) or b;Acceleration Worksheet 8/24/2011 Acceleration 2011-2012 Courses of Study The faculty of the college desires

Davis, H. Floyd

448

Commissioning of the ATLAS Muon Spectrometer with Cosmic Rays  

E-Print Network [OSTI]

The ATLAS detector at the Large Hadron Collider has collected several hundred million cosmic ray events during 2008 and 2009. These data were used to commission the Muon Spectrometer and to study the performance of the trigger and tracking chambers, their alignment, the detector control system, the data acquisition and the analysis programs. We present the performance in the relevant parameters that determine the quality of the muon measurement. We discuss the single element efficiency, resolution and noise rates, the calibration method of the detector response and of the alignment system, the track reconstruction efficiency and the momentum measurement. The results show that the detector is close to the design performance and that the Muon Spectrometer is ready to detect muons produced in high energy proton-proton collisions.

The ATLAS Collaboration

2010-08-02T23:59:59.000Z

449

Entanglement dynamics for uniformly accelerated two-level atoms  

E-Print Network [OSTI]

We study, in the paradigm of open quantum systems, the entanglement dynamics of two uniformly accelerated atoms with the same acceleration perpendicular to the separation. The two-atom system is treated as an open system coupled with a bath of fluctuating massless scalar fields in the Minkowski vacuum, and the master equation that governs its evolution is derived. It has been found that, for accelerated atoms with a nonvanishing separation, entanglement sudden death is a general feature when the initial state is entangled, while for those in a separable initial state, entanglement sudden birth only happens for atoms with an appropriate interatomic separation and sufficiently small acceleration. Remarkably, accelerated atoms can get entangled in certain circumstances while the inertial ones in the Minkowski vacuum can not. A comparison between the results of accelerated atoms and those of static ones in a thermal bath shows that, uniformly accelerated atoms exhibit distinct features from those immersed in a th...

Hu, Jiawei

2015-01-01T23:59:59.000Z

450

Preparation of a technology development roadmap for the Accelerator Transmutation of Waste (ATW) System : report of the ATW separations technologies and waste forms technical working group.  

SciTech Connect (OSTI)

In response to a Congressional mandate to prepare a roadmap for the development of Accelerator Transmutation of Waste (ATW) technology, a Technical Working Group comprised of members from various DOE laboratories was convened in March 1999 for the purpose of preparing that part of the technology development roadmap dealing with the separation of certain radionuclides for transmutation and the disposal of residual radioactive wastes from these partitioning operations. The Technical Working Group for ATW Separations Technologies and Waste Forms completed its work in June 1999, having carefully considered the technology options available. A baseline process flowsheet and backup process were identified for initial emphasis in a future research, development and demonstration program. The baseline process combines aqueous and pyrochemical processes to permit the efficient separation of the uranium, technetium, iodine and transuranic elements from the light water reactor (LWR) fuel in the head-end step. The backup process is an all- pyrochemical system. In conjunction with the aqueous process, the baseline flowsheet includes a pyrochemical process to prepare the transuranic material for fabrication of the ATW fuel assemblies. For the internal ATW fuel cycle the baseline process specifies another pyrochemical process to extract the transuranic elements, Tc and 1 from the ATW fuel. Fission products not separated for transmutation and trace amounts of actinide elements would be directed to two high-level waste forms, one a zirconium-based alloy and the other a glass/sodalite composite. Baseline cost and schedule estimates are provided for a RD&D program that would provide a full-scale demonstration of the complete separations and waste production flowsheet within 20 years.

Collins, E.; Duguid, J.; Henry, R.; Karell, E.; Laidler, J.; McDeavitt, S.; Thompson, M.; Toth, M.; Williamson, M.; Willit, J.

1999-08-12T23:59:59.000Z

451

Safety of Accelerator Facilities  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

To establish accelerator-specific safety requirements which, when supplemented by other applicable safety and health requirements, will serve to prevent injuries and illnesses associated with Department of Energy (DOE) or National Nuclear Security Administration (NNSA) accelerator operations. Cancels DOE O 420.2A. Certified 5-13-08. Canceled by DOE O 420.2C.

2004-07-23T23:59:59.000Z

452

Safety of Accelerator Facilities  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

To establish accelerator-specific safety requirements which, when supplemented by other applicable safety and health requirements, will serve to prevent injuries and illnesses associated with Department of Energy (DOE) or National Nuclear Security Administration (NNSA) accelerator operations. Cancels DOE O 420.2. Canceled by DOE O 420.2B.

2001-01-08T23:59:59.000Z

453

Microscale acceleration history discriminators  

DOE Patents [OSTI]

A new class of micromechanical acceleration history discriminators is claimed. These discriminators allow the precise differentiation of a wide range of acceleration-time histories, thereby allowing adaptive events to be triggered in response to the severity (or lack thereof) of an external environment. Such devices have applications in airbag activation, and other safety and surety applications.

Polosky, Marc A. (Albuquerque, NM); Plummer, David W. (Albuquerque, NM)

2002-01-01T23:59:59.000Z

454

Neutrino physics at accelerators  

E-Print Network [OSTI]

Present and future neutrino experiments at accelerators are mainly concerned with understanding the neutrino oscillation phenomenon and its implications. Here a brief account of neutrino oscillations is given together with a description of the supporting data. Some current and planned accelerator neutrino experiments are also explained.

Enrique Fernandez

2006-07-16T23:59:59.000Z

455

Accelerators (5/5)  

ScienceCinema (OSTI)

1a) Introduction and motivation 1b) History and accelerator types 2) Transverse beam dynamics 3a) Longitudinal beam dynamics 3b) Figure of merit of a synchrotron/collider 3c) Beam control 4) Main limiting factors 5) Technical challenges Prerequisite knowledge: Previous knowledge of accelerators is not required.

None

2011-10-06T23:59:59.000Z

456

Safety of Accelerator Facilities  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

The order defines accelerators and establishes accelerator specific safety requirements and approval authorities which, when supplemented by other applicable safety and health requirements, promote safe operations to ensure protection of workers, the public, and the environment. Cancels DOE O 420.2B.

2011-07-21T23:59:59.000Z

457

Accelerators (4/5)  

ScienceCinema (OSTI)

1a) Introduction and motivation 1b) History and accelerator types 2) Transverse beam dynamics 3a) Longitudinal beam dynamics 3b) Figure of merit of a synchrotron/collider 3c) Beam control 4) Main limiting factors 5) Technical challenges Prerequisite knowledge: Previous knowledge of accelerators is not required.

None

2011-10-06T23:59:59.000Z

458

Accelerators (3/5)  

ScienceCinema (OSTI)

1a) Introduction and motivation 1b) History and accelerator types 2) Transverse beam dynamics 3a) Longitudinal beam dynamics 3b) Figure of merit of a synchrotron/collider 3c) Beam control 4) Main limiting factors 5) Technical challenges Prerequisite knowledge: Previous knowledge of accelerators is not required.

None

2011-10-06T23:59:59.000Z

459

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.

460

Accelerator Modeling with MATLAB Accelerator Toolbox  

SciTech Connect (OSTI)

This paper introduces Accelerator Toolbox (AT)--a collection of tools to model storage rings and beam transport lines in the MATLAB environment. The objective is to illustrate the flexibility and efficiency of the AT-MATLAB framework. The paper discusses three examples of problems that are analyzed frequently in connection with ring-based synchrotron light sources.

Terebilo, Andrei

2002-08-21T23:59:59.000Z

Note: This page contains sample records for the topic "accelerator system atlas" 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

Accelerated Quantum Dynamics  

E-Print Network [OSTI]

In this paper we establish a formalism for the computation of observables due to acceleration-induced particle physics processes. General expressions for the transition rate, multiplicity, power, spectra, and displacement law of particles undergoing time-dependent acceleration and transitioning into a final state of arbitrary particle number are obtained. The transition rate, power, and spectra are characterised by unique polynomials of multiplicity and thermal distributions of both bosonic and fermionic statistics. The acceleration dependent multiplicity is computed in terms of the branching fractions of the associated inertial processes. The displacement law of the spectra predicts the energy of the emitted particles are directly proportional to the accelerated temperature. These results extend our understanding of particle physics into the high acceleration sector.

Lynch, Morgan H

2015-01-01T23:59:59.000Z

462

accelerated carbon ion: Topics by E-print Network  

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

as test particles, and (2) non-linear systems such as the Earth's bow shock and the solar wind termination shock, where the accelerated ions strongly influence the...

463

The Klynac: An Integrated Klystron and Linear Accelerator  

SciTech Connect (OSTI)

The Klynac concept integrates an electron gun, a radio frequency (RF) power source, and a coupled-cavity linear accelerator into a single resonant system

Potter, J. M., Schwellenbach, D., Meidinger, A.

2012-08-07T23:59:59.000Z

464

accelerator-driven transmutation technologies: Topics by E-print...  

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

as the European ADS technology demonstrator. Alex C. Mueller 2012-10-16 7 Thorium as a Fuel for Accelerator Driven Subcritical Electronuclear Systems CERN Preprints Summary:...

465

accelerator-driven transmutation technology: Topics by E-print...  

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

as the European ADS technology demonstrator. Alex C. Mueller 2012-10-16 7 Thorium as a Fuel for Accelerator Driven Subcritical Electronuclear Systems CERN Preprints Summary:...

466

atlas sct barrel: Topics by E-print Network  

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

of processors receiving the full granularity of data from a dedicated detector (Resistive Plate Chambers in the Barrel). Salamanna, G; The ATLAS collaboration 2009-01-01 35...

467

atlas sct barrels: Topics by E-print Network  

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

of processors receiving the full granularity of data from a dedicated detector (Resistive Plate Chambers in the Barrel). Salamanna, G; The ATLAS collaboration 2009-01-01 35...

468

atlas tracking results: Topics by E-print Network  

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

ATLAS results will be given on Standard Model measurements, the discovery of the Higgs boson, searches for supersymmetry and exotics and on heavy-ion results. Vasiliki A....

469

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

470

2010 Carbon Sequestration Atlas of the United States and Canada...  

Open Energy Info (EERE)

and Canada: Third Edition Jump to: navigation, search Tool Summary LAUNCH TOOL Name: 2010 Carbon Sequestration Atlas of the United States and Canada: Third Edition Focus Area:...

471

Non-Dispersive, Accelerated Matter-Waves  

E-Print Network [OSTI]

It is shown that under certain dynamical conditions a material wave packet displays coherent, non-dispersive accelerated evolution in gravitational field over a modulated atomic mirror. The phenomenon takes place as a consequence of simultaneous presence of the dynamical localization and the coherent Fermi acceleration for the same modulation amplitude. It is purely a quantum mechanical effect as the windows of modulation strengths supporting dynamical localization and Fermi acceleration overlap for larger effective Plank constant. Present day experimental techniques make it feasible to realize the system in laboratory.

Farhan Saif; Khalid Naseer; Muhammad Ayub

2014-06-22T23:59:59.000Z

472

The accelerator automation application toolkit workshop presentations  

SciTech Connect (OSTI)

Over the past 18 months on the GTA project at Los Alamos, we have been developing tools for building control systems for accelerators. The first tool developed has already demonstrated greatly reduced requirements for conventional computer programming in applying control systems to an accelerator. Even in the early stages, this work has received considerable attention and the system is currently being investigated or used at several other institutes. Further tools are either in the conceptual design, design, or implementation phase. Over the same period, a group at CERN has been developing the ideas and design for a generic software kit for the application of a control system to accelerators. The CERN software kit also addresses the technical management and documentation aspects of control systems. The purpose of the AT Division effort and the CERN kit is to greatly simplify the implementation and lifetime maintenance of an accelerator control system. Experience has shown that accelerator control systems are also applicable to other experimental physics machines. The purpose of the workshop was to explore these ideas and developments as well as other relevant developments in the field, to verify the viability of the concepts, and to develop further the written specifications for some of the components of such a toolkit. We had draft specifications prepared prior to the workshop. 21 figs.

Howell, J.A.; Bjorklund, E.A.; Clout, P.N.; Dalesio, L.R.; Kozubal, A.J.; Mottershead, C.T.; Rothrock, R.B.; Schaller, S.C.; Stuewe, R.B.; Westervelt, R.T.

1988-01-01T23:59:59.000Z

473

History of Proton Linear Accelerators  

E-Print Network [OSTI]

the board to show why the accelerator couldn't work. Then atmuch. References 1. Linear Accelerators, edited by P. M .at the 1986 Linear Accelerator Conference, SLAC, Stanford,

Alvarez, Luis W.

1986-01-01T23:59:59.000Z

474

Accelerated Least Squares Multidimensional Scaling  

E-Print Network [OSTI]

x(make_x(36,2)) xACCELERATED SCALING R EFERENCES I.ACCELERATED LEAST SQUARES MULTIDIMENSIONAL SCALING JAN DEare simpler to write. ACCELERATED SCALING It is shown in De

Leeuw, Jan de

2006-01-01T23:59:59.000Z

475

Accelerated Least Squares Multidimensional Scaling  

E-Print Network [OSTI]

x(make_x(36,2)) xACCELERATED SCALING R EFERENCES I.ACCELERATED LEAST SQUARES MULTIDIMENSIONAL SCALING JAN DEare simpler to write. ACCELERATED SCALING It is shown in De

Jan de Leeuw

2011-01-01T23:59:59.000Z

476

Inverse free-electron laser accelerator  

SciTech Connect (OSTI)

We first describe the basic physical properties of an inverse free-electron laser and make an estimate of the order of magnitude of the accelerating field obtainable with such a system; then apply the general ideas to the design of an actual device and through this example we give a more accurate evaluation of the fundamental as well as the technical limitations that this acceleration scheme imposes.

Pellegrini, C.; Campisi, R.

1982-01-01T23:59:59.000Z

477

The Bucharest FN Tandem Accelerator: Modernization and Development  

SciTech Connect (OSTI)

The Bucharest FN tandem accelerator, installed in 1973 and upgraded in 1983 to 9 MV, has been used for atomic and nuclear physics studies as well as for different applications using accelerated ion beams. In the last three years a program of modernization of the tandem accelerator including the replacement of the old accelerator equipment by new ones, installation of a pelletron system for the Van de Graaff generator and installation of new negative ion injectors was undertaken. In parallel a development of the tandem accelerator was started. In 2009, a beam pulsing system in the nanosecond range is scheduled to be installed. All these works aimed to transform the tandem accelerator in a reliable and efficient tool for research and applications are presented. The main lines of the research program at the Bucharest tandem accelerator are shortly presented too.

Dobrescu, S.; Mosu, D. V.; Moisa, D.; Papureanu, S. [National Institute for Physics and Nuclear Engineering 'Horia Hulubei' (IFIN-HH) 77125 Magurele-Ilfov (Romania)

2009-03-10T23:59:59.000Z

478

Computational studies and optimization of wakefield accelerators  

E-Print Network [OSTI]

optimization of wakefield accelerators C. G. R. Geddes 1 ,from the U.S. -LHC Accelerator Research Program (LARP),driven plasma wakefield accelerators produce accelerating

Geddes, C.G.R.

2010-01-01T23:59:59.000Z

479

E-Print Network 3.0 - argonne fragment mass Sample Search Results  

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

Restoration Technologies 4 Argonne Tandem Linear Accelerator System The prime national facility for nuclear structure research Summary: ATLAS Argonne Tandem Linear Accelerator...

480

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

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481

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

482

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

483

Atlas Material Testing Solutions | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectricEnergyCT BiomassArnprior, Ontario: EnergyAskjaAtlas Material Testing

484

FleetAtlas | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating Solar Power Basics (TheEtelligence (SmartHome Kyoung's picture SubmittedFleetAtlas

485

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

486

Accelerator on a Chip  

ScienceCinema (OSTI)

SLAC's Joel England explains how the same fabrication techniques used for silicon computer microchips allowed their team to create the new laser-driven particle accelerator chips. (SLAC Multimedia Communications)

England, Joel

2014-07-16T23:59:59.000Z

487

Charged particle accelerator grating  

DOE Patents [OSTI]

A readily disposable and replaceable accelerator grating for a relativistic particle accelerator is described. The grating is formed for a plurality of liquid droplets that are directed in precisely positioned jet streams to periodically dispose rows of droplets along the borders of a predetermined particle beam path. A plurality of lasers are used to direct laser beams onto the droplets, at predetermined angles, thereby to excite the droplets to support electromagnetic accelerating resonances on their surfaces. Those resonances operate to accelerate and focus particles moving along the beam path. As the droplets are distorted or destroyed by the incoming radiation, they are replaced at a predetermined frequency by other droplets supplied through the jet streams.

Palmer, R.B.

1985-09-09T23:59:59.000Z

488

Accelerator on a Chip  

SciTech Connect (OSTI)

SLAC's Joel England explains how the same fabrication techniques used for silicon computer microchips allowed their team to create the new laser-driven particle accelerator chips. (SLAC Multimedia Communications)

England, Joel

2014-06-30T23:59:59.000Z

489

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.

490

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

491

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

492

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

493

Development of fluorocarbon evaporative cooling recirculators and controls for the ATLAS pixel and semiconductor tracking detectors  

E-Print Network [OSTI]

Development of fluorocarbon evaporative cooling recirculators and controls for the ATLAS pixel and semiconductor tracking detectors

Bayer, C; Bonneau, P; Bosteels, Michel; Burckhart, H J; Cragg, D; English, R; Hallewell, G D; Hallgren, Bjrn I; Kersten, S; Kind, P; Langedrag, K; Lindsay, S; Merkel, M; Stapnes, Steinar; Thadome, J; Vacek, V

2000-01-01T23:59:59.000Z

494

Breakthrough: Fermilab Accelerator Technology  

SciTech Connect (OSTI)

There are more than 30,000 particle accelerators in operation around the world. At Fermilab, scientists are collaborating with other laboratories and industry to optimize the manufacturing processes for a new type of powerful accelerator that uses superconducting niobium cavities. Experimenting with unique polishing materials, a Fermilab team has now developed an efficient and environmentally friendly way of creating cavities that can propel particles with more than 30 million volts per meter.

None

2012-04-23T23:59:59.000Z

495

Breakthrough: Fermilab Accelerator Technology  

ScienceCinema (OSTI)

There are more than 30,000 particle accelerators in operation around the world. At Fermilab, scientists are collaborating with other laboratories and industry to optimize the manufacturing processes for a new type of powerful accelerator that uses superconducting niobium cavities. Experimenting with unique polishing materials, a Fermilab team has now developed an efficient and environmentally friendly way of creating cavities that can propel particles with more than 30 million volts per meter.

None

2014-08-12T23:59:59.000Z

496

CEBAF accelerator achievements  

SciTech Connect (OSTI)

In the past decade, nuclear physics users of Jefferson Lab's Continuous Electron Beam Accelerator Facility (CEBAF) have benefited from accelerator physics advances and machine improvements. As of early 2011, CEBAF operates routinely at 6 GeV, with a 12 GeV upgrade underway. This article reports highlights of CEBAF's scientific and technological evolution in the areas of cryomodule refurbishment, RF control, polarized source development, beam transport for parity experiments, magnets and hysteresis handling, beam breakup, and helium refrigerator operational optimization.

Y.C. Chao, M. Drury, C. Hovater, A. Hutton, G.A. Krafft, M. Poelker, C. Reece, M. Tiefenback

2011-06-01T23:59:59.000Z

497

Accelerator dynamics of a fractional kicked rotor  

E-Print Network [OSTI]

It is shown that the Weyl fractional derivative can quantize an open system. A fractional kicked rotor is studied in the framework of the fractional Schrodinger equation. The system is described by the non-Hermitian Hamiltonian by virtue of the Weyl fractional derivative. Violation of space symmetry leads to acceleration of the orbital momentum. Quantum localization saturates this acceleration, such that the average value of the orbital momentum can be a direct current and the system behaves like a ratchet. The classical counterpart is a nonlinear kicked rotor with absorbing boundary conditions.

A. Iomin

2006-09-14T23:59:59.000Z

498

The reach of the ATLAS experiment in SUSY parameter space  

E-Print Network [OSTI]

Already with very first data, the ATLAS experiment should be sensitive to a SUSY signal well beyond the regions explored by the Tevatron. We present a detailed study of the ATLAS discovery reach in the parameter space for various SUSY models. The expected uncertainties on the background estimates are taken ito account.

Janet Dietrich

2009-10-29T23:59:59.000Z

499

atlas test beam: Topics by E-print Network  

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

atlas test beam First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Test beam results of ATLAS Pixel...

500

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