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Nucleon and Nuclear Physics at Jefferson Lab Our core program in medium-energy nuclear physics is centered at Jefferson Lab (JLab), where we have been active collaborators since its inception (see Part VIII below). 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 (see Section D). We have been spokespersons or co-spokespersons on seven Hall-B experiments, five of which remain part of our current research program, together with two experiments in Hall A and one in Hall C. These are:
This extensive program of measurements and analysis requires much of our research effort. Although considerable progress has been made to date, as detailed below, much analysis remains on the older experiments (especially for #s 1 and 2 above), and several experiments have been newly run or newly approved (#s 4, 6, 7, and 8). A new postdoctoral research scientist, to be cost-shared with JLab, will help in this large and growing effort. |
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