WorldCat Identities

Thomas Jefferson National Accelerator Facility (U.S.)

Overview
Works: 3,242 works in 3,931 publications in 1 language and 4,863 library holdings
Genres: Conference proceedings  Periodicals 
Roles: Researcher
Classifications: QC793.5.B32, 539
Publication Timeline
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Publications about Thomas Jefferson National Accelerator Facility (U.S.) Publications about Thomas Jefferson National Accelerator Facility (U.S.)
Publications by Thomas Jefferson National Accelerator Facility (U.S.) Publications by Thomas Jefferson National Accelerator Facility (U.S.)
Most widely held works about Thomas Jefferson National Accelerator Facility (U.S.)
 
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Most widely held works by Thomas Jefferson National Accelerator Facility (U.S.)
OnTarget ( )
in English and held by 131 WorldCat member libraries worldwide
N* physics and nonperturbative quantum chromodynamics : proceedings of the joint ECT*/JLAB workshop, Trento, Italy, May 18-29, 1998 by S Simula ( Book )
1 edition published in 1999 in English and held by 86 WorldCat member libraries worldwide
The workshop was devoted to a summary of recent experimental and theoretical research on N* physics. Special emphasis was given to the information that photo- and electro-production of nucleon resonances can provide on the non-perturbative regime of quantum chromodynamics. Discussions among experimentalists and theoreticians were stimulated in order to pursue the interpretation of the huge amount of forthcoming data from several laboratories in the world. This volume contains both the invited lectures and the contributions. On the main topics, like single and double pion production, pi- and K-meson production, the GDH sum rule, and the spin of the proton
Single crystal-large grain niobium technology : International Niobium Workshop, Araxá, Brazil, 30 October-1 November 2006 by International Niobium Workshop ( Book )
2 editions published in 2007 in English and held by 77 WorldCat member libraries worldwide
International Symposium on the Superconducting Science & Technology of Ingot Niobium Jefferson Laboratory, Newport News, VA, USA, 22-24 September 2010 by International Symposium on the Superconducting Science & Technology of Ingot Niobium ( )
2 editions published in 2011 in English and held by 61 WorldCat member libraries worldwide
Strong interactions at low and intermediate energies : proceedings of the 13th Annual HUGS at CEBAF, Jefferson Laboratory, USA, 26 May-12 June 1998 by HUGS at CEBAF ( Book )
1 edition published in 2000 in English and held by 55 WorldCat member libraries worldwide
Exclusive and semi-exclusive processes at high momentum transfer : Newport News, VA, USA, May 19-22, 1999 ( Book )
2 editions published in 2000 in English and held by 49 WorldCat member libraries worldwide
Exclusive processes at high momentum transfer : May 15-18, 2002, Jefferson Lab, Newport News, Virginia by Workshop on Exclusive Processes at High Momentum Transfer ( Book )
5 editions published in 2002 in English and held by 47 WorldCat member libraries worldwide
This book focuses on the physics of exclusive processes at high momentum transfer and their description in terms of generalized parton distributions, perturbative QCD, and relativistic quark models. It covers recent developments in the field, both theoretical and experimental
Achievements and new directions in subatomic physics : festschrift in honour of Tony Thomas' 60th birthday : Adelaide, Australia, 15-19 February 2010 ( Book )
1 edition published in 2010 in English and held by 33 WorldCat member libraries worldwide
"Readership: Researchers, academics and graduate students in nuclear physics and high-energy physics. The workshop reviewed recent results and new directions for nuclear and hadron physics, focusing on topics such as pion-nucleon interactions and chiral symmetry, partons and deep inelastic scattering, lattice QCD, physics beyond the Standard Model, and complex systems such as econophysics."--Provided by publisher
Research Perspectives at Jefferson Lab 12 GeV and Beyond ( )
4 editions published between 2002 and 2004 in English and held by 7 WorldCat member libraries worldwide
The plans for upgrading the CEBAF accelerator at Jefferson Lab to 12 GeV are presented. The research program supporting that upgrade are illustrated with a few selected examples. The instrumentation under design to carry out that research program is discussed. Finally, a conceptual design of a future upgrade which combines a 25 GeV fixed-target facility and an electron-ion collider facility at a luminosity of up to 10³⁵cm⁻²s⁻¹ and a CM energy of over 40 GeV
High-energy effective action from scattering of QCD shock waves ( )
6 editions published between 2005 and 2007 in English and held by 6 WorldCat member libraries worldwide
At high energies, the relevant degrees of freedom are Wilson lines - infinite gauge links ordered along straight lines collinear to the velocities of colliding particles. The effective action for these Wilson lines is determined by the scattering of QCD shock waves. I develop the symmetric expansion of the effective action in powers of strength of one of the shock waves and calculate the leading term of the series. The corresponding first-order effective action, symmetric with respect to projectile and target, includes both up and down fan diagrams and pomeron loops
Search for modification of vector meson properties in nuclei ( )
4 editions published between 2005 and 2006 in English and held by 5 WorldCat member libraries worldwide
The properties of vector mesons, such as their mass and width, are predicted to be modified in dense medium such as a nucleus. This modification, if proven to exist, could be related to more fundamental physics such as a partial restoration of chiral symmetry at high density. The g7 (or E01-112) experiment has been designed to look for medium effects on the properties of the light vector mesons (rho, omega, and phi) in photoproduction, through their rare leptonic decay into e+e-. This decay channel has been preferred to the two pion channel to avoid distorting the information by strong final interaction. The data for this experiment was taken in the fall of 2002 using the CLAS detector at the Jefferson Lab. A bremstrahlung photon beam was sent on a target containing a liquid deuterium cell and several nuclear targets: C, Fe, Ti, and Pb. First results will be presented
Nucleon Electromagnetic Form Factors ( )
4 editions published between 2000 and 2007 in English and held by 5 WorldCat member libraries worldwide
A review of data on the nucleon electromagnetic form factors in the space-like region is presented. Recent results from experiments using polarized beams and polarized targets or nucleon recoil polarimeters have yielded a significant improvement on the precision of the data obtained with the traditional Rosenbluth separation. Future plans for extended measurements are outlined
Digital beam position monitor for the HAPPEX experiment ( )
3 editions published in 2005 in English and held by 4 WorldCat member libraries worldwide
The proposed HAPPEX experiment at CEBAF employs a three cavity monitor system for high-precision (1 mm), high-bandwidth (100 kHz) position measurements. This is performed using a cavity triplet consisting of two TM110-mode cavities (one each for X and Y planes) combined with a conventional TM-010-mode cavity for a phase and magnitude reference. Traditional systems have used the TM010 cavity output to directly down convert the BPM cavity signals to base band. The Multi-channel HAPPEX digital receiver simultaneously I/Q samples each cavity and extracts position using a CORDIC algorithm. The hardware design consists of a digital receiver daughter board and digital processor motherboard that resides in a VXI crate. The daughter board down converts 1.497 GHz signals from the TM010 cavity and X and Y signals from the TM110 cavities to 4 MHz, and extracts the quadrature digital signals. The motherboard processes this data and computes beam intensity and X-Y positions with a resolution of one mm, 100 kHz output bandwidth, and overall latency of ten microseconds. The results are available in both analog and digital format
High Power Free Electron Lasers ( )
4 editions published between 1999 and 2004 in English and held by 4 WorldCat member libraries worldwide
FEL Oscillators have been around since 1977 providing not only a test bed for the physics of Free Electron Lasers and electron/photon interactions but as a workhorse of scientific research. The characteristics that have driven the development of these sources are the desire for high peak and average power, high pulse energies, wavelength tunability, timing flexibility, and wavelengths that are unavailable from more conventional laser sources. User programs have been performed using such sources encompassing medicine, biology, solid state research, atomic and molecular physics, effects of non-linear fields, surface science, polymer science, pulsed laser vapor deposition, to name just a few. Recently the incorporation of energy recovery systems has permitted extension of the average power capabilities to the kW level and beyond. Development of substantially higher power systems with applications in defense and security is believed feasible with modest R & D efforts applied to a few technology areas. This paper will discuss at a summary level the physics of such devices, survey existing and planned facilities, and touch on the applications that have driven the development of these popular light sources
Generalized Parton Distributions and Deep Exclusive Reactions Present Program at Jlab ( )
4 editions published between 2000 and 2005 in English and held by 4 WorldCat member libraries worldwide
We review briefly the physical concept of generalized parton distributions and the experimental challenges associated with the corresponding measurements of deep exclusive reactions. The first data obtained at Jefferson Lab for exclusive photon (DVCS) and vector meson (DVMP) electroproduction above the resonance-excitation region are described. Two upcoming dedicated DVCS experiments are presented in some detail
Fabrication and Testing of the SRF cavities for the CEBAF 12 GeV Upgrade Prototype Cryomodule Renascence ( )
2 editions published in 2005 in English and held by 4 WorldCat member libraries worldwide
Twelve seven-cell niobium cavities for the CEBAF 12 GeV upgrade prototype cryomodule Renascence have been fabricated at JLab and tested individually. This set includes four of the ''Low Loss'' (LL) design and eight of the ''High Gradient'' (HG) design. The fabrication strategy was an efficient mix of batch job-shop component machining and in-house EBW, chemistry, and final-step machining to meet mechanical tolerances. Process highlights will be presented. The cavities have been tested at 2.07 K, the intended CEBAF operating temperature. Performance exceeded the tentative design requirement of 19.2 MV/m CW with less than 29 W dynamic heat dissipation. These results, as well as the HOM damping performance are presented
Recent Results from JLab on Nucleon Responses ( )
2 editions published between 2003 and 2004 in English and held by 4 WorldCat member libraries worldwide
Highlights of recent data from Jefferson Lab on the nucleon response to an electro-magnetic probe are presented. Recent technological advances in polarized beams and either polarized targets or nucleon recoil polarimeters have yielded a significant improvement on the precision of the data. An outlook is presented of planned experiments
Compressing Control System Data for Efficient Storage and Retrieval ( )
2 editions published in 2003 in English and held by 4 WorldCat member libraries worldwide
The controls group at the Thomas Jefferson National Accelerator Facility (Jefferson Lab), acquires multiple terabytes of EPICS control system data per year via CZAR, its new archiving system. By heuristically applying a combination of rudimentary compression techniques, in conjunction with several specialized data transformations and algorithms, the CZAR storage engine reduces the size of this data by approximately 88 percent, without any loss of information. While the compression process requires significant memory and processor time, the decompression routine suffers only slightly in this regard
CEBAF Control Room Renovation ( )
3 editions published in 2005 in English and held by 4 WorldCat member libraries worldwide
The Machine Control Center (MCC) at Jefferson Lab's Continuous Electron Beam Accelerator Facility (CEBAF) was initially constructed in the early 1990s and based on proven technology of that era. Through our experience over the last 15 years and in our planning for the facility's 12 GeV upgrade we reevaluated the control room environment to capitalize on emerging visualization and display technologies and improve workflow processes and ergonomic attributes. This effort also sets the foundation for the redevelopment of the accelerator's control system to deliver high reliability performance with improvements in beam specifications management and information flow. The complete renovation was performed over a three-week maintenance period with no interruption to beam operations. We present the results of this effort
Beam loss ion chamber system upgrade for experimental halls ( )
3 editions published in 2005 in English and held by 4 WorldCat member libraries worldwide
The Beam loss Ion Chamber System (BLICS) was developed to protect Jefferson Labs transport lines, targets and beam dumps from a catastrophic ''burn through''. Range changes and testing was accomplished manually requiring the experiment to be shut down. The new upgraded system is based around an ''off the shelf'' Programmable Logic Controller located in a single control box supporting up to ten individual detectors. All functions that formerly required an entry into the experimental hall and manual adjustment can be accomplished from the Machine Control Center (MCC). A further innovation was the addition of a High Voltage ''Brick'' at the detector location. A single cable supplies the required voltage for the Brick and a return line for the ion chamber signal. The read back screens display range, trip point, and accumulated dose for each location. The new system is very cost effective and significantly reduces the amount of lost experimental time
 
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Alternative Names

controlled identity Continuous Electron Beam Accelerator Facility

Jefferson Lab
Jefferson Lab (U.S.)
Jefferson Laboratory
Jefferson Laboratory (U.S.)
Jefferson National Accelerator Facility
Jefferson National Accelerator Facility (U.S.)
JLAB
JLab Abkuerzung
TJNAF Abkuerzung
United States. Thomas Jefferson National Accelerator Facility
Languages
English (80)
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