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| Total Pages | : 452 |
| Release | : 1998 |
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| Author | : Boffi Sigfrido |
| Publisher | : #N/A |
| Total Pages | : 512 |
| Release | : 1999-12-29 |
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| ISBN | : 981454325X |
This volume discusses theoretical and experimental activities in the investigation of nucleon and nuclear structure by electromagnetic and hadronic probes at intermediate and high energies. The focus is on laboratory activities, recent progress concerning the structure of hadrons, relativistic many-body approaches, deep inelastic scattering and correlations in nuclei.
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| Release | : 2000 |
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The plans for upgrading the CEBAF accelerator at Jefferson Lab to 12 GeV are presented. The research program supporting that update are illustrated with a few selected examples. The instrumentation under design to carry out that research program is discussed.
| Author | : Carl Carlson |
| Publisher | : World Scientific |
| Total Pages | : 359 |
| Release | : 2000-07-20 |
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| ISBN | : 9814542830 |
This book constitutes the proceedings of a workshop on 'Exclusive and Semi-exclusive Processes at High Momentum Transfer', sponsored by the Institute for Nuclear Theory (Seattle) and the Thomas Jefferson National Accelerator Facility (Jefferson Laboratory). The workshop was inspired by recent progress in the field, particularly in the uses of off-forward or skewed parton distributions to elucidate nucleon structure. This book contains the written versions of 41 scientific talks, on subjects including the aforementioned skewed parton distributions, and also on deeply virtual Compton scattering, semi-exclusive (or semi-inclusive) reactions, and hard elastic and transition form factors.
| Author | : Argonne National Laboratory. Physics Division |
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| Total Pages | : 274 |
| Release | : 1998 |
| Genre | : Nuclear physics |
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| Release | : 2001 |
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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.
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| Release | : 1998 |
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Prospects for energy upgrades of the CEBAF accelerator at Jefferson Laboratory are reviewed. The plans begin with the evolutionary upgrade of the maximum energy to 6 GeV, which is already in progress. This would be followed by a construction project to provide energies up to 12 GeV in a remarkably cost-effective manner. A further doubling of the beam energy to 24 GeV is also feasible. The physics that motivates the increase to 12 GeV is reviewed briefly. Then the features of the existing accelerator are outlined with particular emphasis on characteristics of the installed components and the tunnel that impact on possible energy upgrades. Next, the broad approach to increasing the beam energy to 12 GeV, preserving the 100% duty factor and 1 MW beam power of the present accelerator, is outlined. Issues associated with the parallel evolution of the capability of the experimental equipment are reviewed and a ''straw man'' solution is presented to stimulate discussion. Finally, prospects for a future 24 GeV upgrade are presented briefly.
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| Release | : 2005 |
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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.
| Author | : Hans-Otto Meyer |
| Publisher | : American Inst. of Physics |
| Total Pages | : 460 |
| Release | : 2000-06-08 |
| Genre | : Science |
| ISBN | : 9781563969287 |
The aim of the STORI99 Conference was to bring together physicists from a diverse international research community connected by the common technology of storage rings and review the topics of current interest in nuclear physics research with stored, cooled ion beams and electron beams. Specifically, the scientific program of STORI99 focused on recent results from a wide variety of experimental programs at existing stored-beam facilities, on progress in associated theoretical issues, and on discussion of new facilities and experimental techniques. In addition to the traditional physics topics covered by the series of STORI conferences (nucleon physics and meson production, physics with stored heavy-ion beams, polarized beams and targets), new physics topics introduced at STORI99 included strangeness production with high-energy stored proton beams and physics with stored electron beams.
| Author | : Volker Burkert |
| Publisher | : World Scientific |
| Total Pages | : 454 |
| Release | : 2001-02-28 |
| Genre | : Science |
| ISBN | : 9814542709 |
The conference NSTAR 2000 was part of a series of conferences and workshops that began in New York in 1988. Since then, the field of excited nucleons and hadron structure has developed enormously, and the scope has broadened. Most significantly, new experimental facilities have come into operation, allowing precise measurements of resonance couplings and transition form factors. The search for “missing” quark model states and gluonic excitations in complex hadronic channels is now possible.On the theory side, new and promising developments have emerged: quark models with meson degrees of freedom, hybrid baryon models, and studies of baryons in the limit of many colors. For the first time, lattice QCD has been employed to calculate masses of excited nucleons. Nucleon resonances are now recognized as providing significant contributions to the nucleon spin sum rules, as well as the Gerasimov-Drell-Hearn and Bjorken integrals, at finite momentum transfer.
