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Thomas Jefferson National Accelerator Facility
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Book Synopsis Performance Report of the U.S. Department of Energy's Thomas Jefferson National Accelerator Facility by :
Download or read book Performance Report of the U.S. Department of Energy's Thomas Jefferson National Accelerator Facility written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Jefferson Lab (JLab), the newest of the U.S. Department of Energy's 16 national laboratories, has been functioning effectively since its inception in 1984, first during construction and now during operations. As shown in this report, JLab aligns itself directly with DOE's strategic planning, both in terms of laboratory visions and plans and in terms of actual laboratory performance. Most importantly, JLab contributes significantly to DOE's Science and Technology mission in the area of nuclear physics, under the Office of Science. The laboratory practices continuous improvement and has made a number of important effectiveness and efficiency enhancements in recent years. Laboratory performance has been demonstrated by completion of the construction phase on cost and schedule, by exceeding technical specifications when coming on-line for physics research, and now during operations by earning ratings of ''outstanding'' relative to the performance measures in the laboratory's performance-based contract with DOE.
Book Synopsis Thomas Jefferson National Accelerator Facility Institutional Plan FY2000 - FY2004 by :
Download or read book Thomas Jefferson National Accelerator Facility Institutional Plan FY2000 - FY2004 written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Jefferson Lab contributes to the Department of Energy mission to develop and operate major cutting-edge scientific user facilities. Jefferson Lab's CEBAF (Continuous Electron Beam Accelerator Facility) is a unique tool for exploring the transition between the regime where strongly interacting (nuclear) matter can be understood as bound states of protons and neutrons, and the regime where the underlying fundamental quark-and-gluon structure of matter is evident. The nature of this transition is at the frontier of the authors understanding of matter. Experiments proposed by 834 scientists from 146 institutions in 21 countries await beam time in the three halls. The authors user-customers have been delighted with the quality of the data they are obtaining. Driven by their expressed need for energies higher than the 4 GeV design energy and on the outstanding performance of their novel superconducting accelerator, the laboratory currently delivers beams at 5.5 GeV and expects to deliver energies approaching 6 GeV for experiments in the near future. Building on the success of Jefferson Lab and continuing to deliver value for the nation's investment is the focus of Jefferson Lab's near-term plans. The highest priority for the facility is to execute its approved experimental program to elucidate the quark structure of matter. The Lab plans to participate in the Strategic Simulation Initiative and benefit from the scientific opportunities that it affords. Initially, the lab will contribute its expertise in simulations for nuclear theory and accelerators, data handling, and distributed systems. As part of its SSI activities, the lab is planning to enhance its expertise in lattice QCD and simulations of photon-driven materials and chemical processes.
Book Synopsis Thomas Jefferson National Accelerator Facility by :
Download or read book Thomas Jefferson National Accelerator Facility written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Thomas Jefferson National Accelerator Facility (Jefferson Lab) in Newport News, Virginia, USA, is one of ten national laboratories under the aegis of the Office of Science of the U.S. Department of Energy (DOE). It is managed and operated by Jefferson Science Associates, LLC. The primary facility at Jefferson Lab is the Continuous Electron Beam Accelerator Facility (CEBAF) as shown in an aerial photograph in Figure 1. Jefferson Lab was created in 1984 as CEBAF and started operations for physics in 1995. The accelerator uses superconducting radio-frequency (srf) techniques to generate high-quality beams of electrons with high-intensity, well-controlled polarization. The technology has enabled ancillary facilities to be created. The CEBAF facility is used by an international user community of more than 1200 physicists for a program of exploration and study of nuclear, hadronic matter, the strong interaction and quantum chromodynamics. Additionally, the exceptional quality of the beams facilitates studies of the fundamental symmetries of nature, which complement those of atomic physics on the one hand and of high-energy particle physics on the other. The facility is in the midst of a project to double the energy of the facility and to enhance and expand its experimental facilities. Studies are also pursued with a Free-Electron Laser produced by an energy-recovering linear accelerator.
Book Synopsis Beam Dynamics Activities at the Thomas Jefferson National Accelerator Facility (Jefferson Lab). by : David Douglas
Download or read book Beam Dynamics Activities at the Thomas Jefferson National Accelerator Facility (Jefferson Lab). written by David Douglas and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings from Jlab by : Thomas Jefferson National Accelerator Facility
Download or read book Proceedings from Jlab written by Thomas Jefferson National Accelerator Facility and published by . This book was released on 1998 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thomas Jefferson National Accelerator Facility FEL Industrial Applications by :
Download or read book Thomas Jefferson National Accelerator Facility FEL Industrial Applications written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Thomas Jefferson National Accelerator Facility, a $600 million US Department of Energy national laboratory, serves basic science by carrying out a primary mission of nuclear and particle physics research. A technologically related secondary mission now also exists for Jefferson Lab: applied research to develop superconducting radio-frequency (SRF)-based free-electron lasers as cost-effective new manufacturing capabilities for industry. A number of high-technology corporations and research universities, believing in the potential of SRF-driven FELs to overcome the constraints of cost, capacity, wavelength, and pulse-length, have formed the Laser Processing Consortium, and have joined with Jefferson Lab to develop the needed laser technology. Consortium members plan a range of industrial applications. In the area of polymer surface processing, they intend to develop amorphization to enhance adhesion, fabric surface texturing, enhanced food packaging, and induced surface conductivity. In micromachining, applications are ultrahigh-density CD-ROM technology, surface texturing; micro-optical components, and Micro-Electrical Mechanical Systems (MEMS). In metal surface processing proposed applications are laser glazing for corrosion resistance and adhesion pre-treatments. In electronic materials processing, the authors will investigate large-area processing (flat-panel displays) and a laser-based icluster tool for combined deposition, etching, and in situ diagnostics. The potential commercial value of the technology is significant, impacting several multibillion dollar markets. Moreover, significant additional applications exist in basic and applied research. The FEL is laid out in a racetrack configuration to utilize energy recovery of the spent electron beam. The electrons are produced in a 350 kV DC photocathode gun and accelerated to 10 MeV in a superconducting accelerating unit with 1 meter of active length. The electrons are then accelerated in an SRF cryomodule up to an energy of 57 MeV. In order to minimize emittance-growth effects and to accelerate the commissioning process, the FEL is placed at the exit of the linac. The electron beam is deflected around two cavity mirrors in two magnetica chicanes with a path-length dispersion (M56) of 30 cm. After the FEL, the beam can be recirculated for energy recovery and dumped at the injection energy of 10 MeV. The recirculation loop is based on the isochronous achromat used in the MIT Bates accelerator but designed with an energy acceptance of 6%. They estimate that the power output at 3 [mu]m should be 980 W with a small signal gain of 46%. This paper will explore the technical and economic justification of the design and present the commissioning progress to date.
Book Synopsis Review of Science and Technology at Thomas Jefferson National Accelerator Facility by : Southeastern Universities Research Association (U.S.)
Download or read book Review of Science and Technology at Thomas Jefferson National Accelerator Facility written by Southeastern Universities Research Association (U.S.) and published by . This book was released on 1998 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Environmental Assessment, Proposed Improvements at the Thomas Jefferson National Accelerator Facility Newport News, Virginia by :
Download or read book Environmental Assessment, Proposed Improvements at the Thomas Jefferson National Accelerator Facility Newport News, Virginia written by and published by . This book was released on 2002 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Jefferson Lab Virtual Tour written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Take a virtual tour of the campus of Thomas Jefferson National Accelerator Facility. You can see inside our two accelerators, three experimental areas, accelerator component fabrication and testing areas, high-performance computing areas and laser labs.
Book Synopsis Jefferson Lab Accelerator Operations Training and Development Program by :
Download or read book Jefferson Lab Accelerator Operations Training and Development Program written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The mission of the Jefferson Lab Operations Group is to provide safe and efficient delivery of high quality electron beam for Jefferson Laboratory's nuclear and accelerator physics programs. The Operations staff must be able to setup, transport, maintain, and troubleshoot beam to all three experimental halls in a safe, efficient, and expeditious manner. Due to the nature of shift work, high employee turnover is always as issue. This creates a unique situation where highly trained staff members must quickly be produced and maintained in order to meet the needs of the Laboratory. Some methods used to address this problem will be presented here.
Book Synopsis Economic and Education Impact of Building the Continuous Electron Beam Accelerator Facility by :
Download or read book Economic and Education Impact of Building the Continuous Electron Beam Accelerator Facility written by and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Continuous Electron Beam Accelerator Facility (CEBAF) was built in Newport News, Virginia, between 1987 and 1995 and is a new basic research laboratory christened the Thomas Jefferson National Accelerator Facility (Jefferson Lab). Jefferson Lab's science and technology mission has major economic and educational benefits: basic research discoveries, improvement and application of key technologies associated with the accelerator and the experiments, extensive subcontracting with industry, and diverse employment and educational opportunities. The $600 million invested by federal, state, local and international partners to build Jefferson Lab has had substantial economic and educational benefits locally, as well as significant benefits distributed among industries and universities throughout the United States.
Book Synopsis Jefferson Lab's Journey Into the Nucleus by :
Download or read book Jefferson Lab's Journey Into the Nucleus written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The year 1969 saw the publication of the first results indicating that hard scattering centres exist deep inside protons. A collaboration between the Stanford Linear Accelerator Center (SLAC) and the Massachusetts Institute of Technology was using SLAC's new high-energy electron LINAC to pioneer a rich new field in the study of the nucleus--deep inelastic scattering. Their measurements revealed that nucleons are made up of point-like particles, which Richard Feynman dubbed ''partons''. Thirty-five years on, studies of the parton-nature of the nucleus continue, not only at the traditional high-energy centres, but also at lower-energy laboratories, and in particular at the Thomas Jefferson National Accelerator Facility (Jefferson Lab) in Virginia. Jefferson Lab is home to the Continuous Electron Beam Accelerator Facility (CEBAF). Its main mission is to explore the atomic nucleus and the fundamental building-blocks of matter. As part of this mission, researchers there study the transition from the picture of the nucleus as a bound state of neutrons and protons to its deeper structure in terms of quarks and gluons--in other words, the transition from the hadronic degrees of freedom of nuclear physics to the quark-gluon degrees of freedom of high-energy physics. In exploring this transition, a wide range of experiments has been performed, from measurements of elastic form factors at large momentum transfers to studies of deep inelastic scattering. An array of spectrometers together with electron-beam energies of up to 5.7 GeV has allowed the laboratory to make significant contributions to this field. This article describes three experiments, each aimed at improving our understanding of a different aspect of the partonic nature of matter. The first, a classic deep inelastic scattering experiment, seeks to further our understanding of the composition of nucleon spin. The second experiment studies the concept of quark-hadron duality--a link between the deep inelastic region and the resonance region. The third experiment uses the atomic nucleus as a laboratory to improve understanding of the propagation and hadronization of quarks. Jefferson Lab's ability to perform this range of measurements is illustrated by the plot from the CEBAF Large Acceptance Spectrometer (CLAS) shown on the cover of this magazine, where the hadronic resonance peaks are seen to be washed out as one goes from the delta resonance around 1.2 GeV to higher invariant masses and into the deep inelastic scattering realm of quarks and gluons.
Download or read book Jefferson Lab, a Status Report written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Thomas Jefferson National Accelerator Facility (Jefferson Lab; formerly known as CEBAF), operates a 4 GeV, 200[micro]A continuous wave (CW) electron accelerator that re-circulates the beam five times through two superconducting 400 MeV linacs. Electrons can be extracted from any of the five recirculation passes and beam can be simultaneously delivered to the three experimental halls. As the commissioning stage nears completion, the accelerator is becoming a fully operational machine. Experiments in Hall C have been underway since November 1995 with beam powers of over 300 kW at various energies. Hall A has received beam for spectrometer commissioning, while Hall B is expected to receive its first beam in the fall of 1996. Accelerator availability of greater than 70% during physics runs and excellent beam quality have contributed to making Jefferson Lab a world class laboratory for accelerator-based electromagnetic nuclear physics. With the high performance of the superconducting RF cavities, machine upgrades to 6 GeV, and eventually 8 to 10 GeV are now in the planning stages. Operational and commissioning details concerning all aspects of the machine will be discussed.
Book Synopsis Research Perspectives at Jefferson Lab by :
Download or read book Research Perspectives at Jefferson Lab written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The plans for upgrading the CEBAF accelerator at Jefferson Lab to 12 GeV are presented. The research program supporting that upgrade is 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 an electron-ion collider facility at a luminosity of up to 1035 cm−2s−1 and a CM energy of up to 65 GeV with a 25 GeV fixed-target facility.
Book Synopsis Beam Dynamics Activities at the Thomas Jefferson National Accelerator Facility (Jefferson Lab). by :
Download or read book Beam Dynamics Activities at the Thomas Jefferson National Accelerator Facility (Jefferson Lab). written by and published by . This book was released on 1997 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Thomas Jefferson National Accelerator Facility (Jefferson Lab) has been funded by the US Navy to build an infra-red FEL driven by an energy-recovering compact SRF-based linear accelerator. The machine is to produce a 1 kW IR photon beam. The Jefferson Lab Accelerator Division is presently engaged in detailed design and beam dynamics studies for the driver accelerator. Principle beam dynamics and beam transport considerations include: (1) generation and transport of a high-quality, high-current, space-charge dominated beam; (2) the impact of coherent synchrotron radiation (CSR) during beam recirculation transport; (3) low-loss transport of a large momentum spread, high-current beam; (4) beam break up (BBU) instabilities in the recirculating accelerator; (5) impedance policing of transport system components; and (6) RF drive system control during energy recovery and FEL operation.
Download or read book Jefferson Laboratory written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Maintenance, repair, and upgrades to the Thomas Jefferson National Accelerator Facility, a DOE laboratory located in Newport News, VA, USA, is based upon a two-week run cycle followed by a one-shift maintenance period. The rationale for this approach will be presented including a brief look at the maintenance funding, support staff, and beam availability. Means for improving the machine will be presented including record keeping of downtime, compilation of data, dissemination of findings, and allocation of resources. Maintenance problems facing Jefferson Lab will be presented.
Book Synopsis Nuclear Physics by : National Research Council
Download or read book Nuclear Physics written by National Research Council and published by National Academies Press. This book was released on 2013-02-25 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: The principal goals of the study were to articulate the scientific rationale and objectives of the field and then to take a long-term strategic view of U.S. nuclear science in the global context for setting future directions for the field. Nuclear Physics: Exploring the Heart of Matter provides a long-term assessment of an outlook for nuclear physics. The first phase of the report articulates the scientific rationale and objectives of the field, while the second phase provides a global context for the field and its long-term priorities and proposes a framework for progress through 2020 and beyond. In the second phase of the study, also developing a framework for progress through 2020 and beyond, the committee carefully considered the balance between universities and government facilities in terms of research and workforce development and the role of international collaborations in leveraging future investments. Nuclear physics today is a diverse field, encompassing research that spans dimensions from a tiny fraction of the volume of the individual particles (neutrons and protons) in the atomic nucleus to the enormous scales of astrophysical objects in the cosmos. Nuclear Physics: Exploring the Heart of Matter explains the research objectives, which include the desire not only to better understand the nature of matter interacting at the nuclear level, but also to describe the state of the universe that existed at the big bang. This report explains how the universe can now be studied in the most advanced colliding-beam accelerators, where strong forces are the dominant interactions, as well as the nature of neutrinos.
