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The GW Experimental Nuclear Physics Program
- Nucleon and Nuclear Physics at
Jefferson Lab
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Our core program in medium-energy nuclear physics is centered at Jefferson Lab (JLab), where we have been active collaborators since its inception. We have participated primarily in the Hall-B program, particularly in experiments with real photons from the Tagged-Photon Facility, using (except for our photofission measurements) the CEBAF Large-Acceptance Spectrometer (CLAS). We always have been part of the Tagger team; we designed, built, installed, and tested its focal-plane detector array, and later we designed, instrumented, installed, and tested (with colleagues) the goniometer used for generating a polarized-photon beam via coherent bremsstrahlung. Now we are developing the polarimeter facility for measuring the beam polarization.
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- The Crystal Ball Program
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After a successful program of hadron-induced physics at the
Brookhaven National Laboratory AGS with the Crystal Ball Spectrometer, it
has been moved to the Mainz Microtron (MAMI).
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- Low-Energy Photonuclear Studies
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The GW group has been involved in low-energy measurements (i.e.,
below pion threshold) related to few-body systems for several years in
experiments at Saskatoon and Lund. An experiment at the Saskatchewan
Accelerator Laboratory (SAL) to measure the simultaneous two-body breakup of
3He and 3H was led by Dr. Feldman and the
results are nearly ready for publication. A follow-up experiment at Lund on
3He is an extension to lower energy, and the GW group is an
active part of the collaboration on that measurement. Dr. Feldman also has
extensive experience in Compton scattering on the proton and the deuteron at
SAL and is the spokesman for an earlier proposal for elastic
Compton scattering on deuterium, the results of which were recently
published. More...
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