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Title: The JLab 12 GeV Energy Upgrade of CEBAF for QCD and Hadronic Physics

Abstract

CEBAF at Jefferson Lab is a 5-pass, recirculating cw electron linac operating at ~6 GeV and devoted to basic research in nuclear physics. The 12 GeV Upgrade is a major project, sponsored by the DOE Office of Nuclear Physics, that will expand its research capabilities substantially by doubling the maximum energy and adding major new experimental apparatus. We anticipate that the project will receive Critical Decision 2 approval this year and begin construction in 2008. The research program motivating the Upgrade includes: the study of hybrid mesons, which involve excited states of the glue, to explore the nature of quark confinement; dramatic improvements in our understanding of the QCD structure of the hadrons through the extension of our knowledge of their parton distribution functions to high xBjorken, where they are dominated by underlying valence quark structure, and a program of nucleon “tomography” via measurements of the Generalized Parton Distributions (GPDs), a broad program of experiments in the physics of nuclei that aims to understand the QCD basis for the nucleon-nucleon force and how nucleons and mesons arise as an approximation to the underlying quark-gluon structure; and precision tests of the Standard Model through parity violating deep inelastic and Møller scattering.more » The Upgrade includes: doubling the accelerating voltages of the linacs by adding 10 new high-performance cryomodules; the requisite expansion of the 2K cryogenics plant and rf power systems to support these cryomodules; upgrading the beam transport system from 6 to 12 GeV through extensive re-use and/or modification of existing hardware; and the addition of one recirculation arc, a new experimental area, and the beamline to it; and the construction of major new experimental equipment for the GPD, high-xBjorken, and hybrid meson programs. The presentation will describe the science briefly and provide some details about the accelerator plans.« less

Authors:
;
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA
Sponsoring Org.:
USDOE - Office of Energy Research (ER)
OSTI Identifier:
909614
Report Number(s):
JLAB-PHY-07-680; DOE/OR/23177-0083
TRN: US0703922
DOE Contract Number:  
AC05-06OR23177
Resource Type:
Conference
Resource Relation:
Conference: 2007 IEEE Particle Accelerator Conference, Albuquerque, NM, 25-30 June 2007
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 24 POWER TRANSMISSION AND DISTRIBUTION; ACCELERATORS; BAG MODEL; BEAM TRANSPORT; DISTRIBUTION FUNCTIONS; EXCITED STATES; LINEAR ACCELERATORS; MOELLER SCATTERING; NUCLEAR PHYSICS; PHYSICS; POWER SYSTEMS; QUANTUM CHROMODYNAMICS; RESEARCH PROGRAMS; STANDARD MODEL; VALENCE

Citation Formats

Cardman, Lawrence, and Harwood, Leigh. The JLab 12 GeV Energy Upgrade of CEBAF for QCD and Hadronic Physics. United States: N. p., 2007. Web.
Cardman, Lawrence, & Harwood, Leigh. The JLab 12 GeV Energy Upgrade of CEBAF for QCD and Hadronic Physics. United States.
Cardman, Lawrence, and Harwood, Leigh. Mon . "The JLab 12 GeV Energy Upgrade of CEBAF for QCD and Hadronic Physics". United States. https://www.osti.gov/servlets/purl/909614.
@article{osti_909614,
title = {The JLab 12 GeV Energy Upgrade of CEBAF for QCD and Hadronic Physics},
author = {Cardman, Lawrence and Harwood, Leigh},
abstractNote = {CEBAF at Jefferson Lab is a 5-pass, recirculating cw electron linac operating at ~6 GeV and devoted to basic research in nuclear physics. The 12 GeV Upgrade is a major project, sponsored by the DOE Office of Nuclear Physics, that will expand its research capabilities substantially by doubling the maximum energy and adding major new experimental apparatus. We anticipate that the project will receive Critical Decision 2 approval this year and begin construction in 2008. The research program motivating the Upgrade includes: the study of hybrid mesons, which involve excited states of the glue, to explore the nature of quark confinement; dramatic improvements in our understanding of the QCD structure of the hadrons through the extension of our knowledge of their parton distribution functions to high xBjorken, where they are dominated by underlying valence quark structure, and a program of nucleon “tomography” via measurements of the Generalized Parton Distributions (GPDs), a broad program of experiments in the physics of nuclei that aims to understand the QCD basis for the nucleon-nucleon force and how nucleons and mesons arise as an approximation to the underlying quark-gluon structure; and precision tests of the Standard Model through parity violating deep inelastic and Møller scattering. The Upgrade includes: doubling the accelerating voltages of the linacs by adding 10 new high-performance cryomodules; the requisite expansion of the 2K cryogenics plant and rf power systems to support these cryomodules; upgrading the beam transport system from 6 to 12 GeV through extensive re-use and/or modification of existing hardware; and the addition of one recirculation arc, a new experimental area, and the beamline to it; and the construction of major new experimental equipment for the GPD, high-xBjorken, and hybrid meson programs. The presentation will describe the science briefly and provide some details about the accelerator plans.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jun 25 00:00:00 EDT 2007},
month = {Mon Jun 25 00:00:00 EDT 2007}
}

Conference:
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