The design and the performance of a non-magnetic detector setup for internal target physics at the NIKHEF electron-scattering facility is described. The detector setup, used in the first ...internal-target experiment at the AmPS ring, measures the spin dependence in the elastic and break-up reaction channels from tensor polarized deuterium. It has been established that the detector setup can operate adequately in an internal target environment at luminosities up to 10
32 e
− atoms cm
−2 s
−1. Results and measured resolutions are presented.
We report the first measurement of analyzing powers and spin correlation parameters using a storage ring with both beam and internal target polarized. Spin observables were measured for elastic ...scattering of 45 and 198 MeV protons from polarized sup 3He nuclei in a new laser-pumped internal gas target at the Indiana University Cyclotron Facility Cooler Ring. Scattered protons and recoil sup 3He nuclei were detected in coincidence with large acceptance plastic scintillators and silicon detectors. The internal-target technique demonstrated in this experiment has broad applicability to the measurement of spin-dependent scattering in nuclear and particle physics.
In the four-momentum-transfer range 0.05{le}{ital q}{sub {nu}}{sup 2}{le}0.27 (GeV/{ital c}){sup 2}, longitudinal and transverse response functions have been determined by performing a Rosenbluth ...separation of {sup 2}H({ital e},{ital e}{prime}{ital p}) coincidence cross sections measured in parallel kinematics. The results are compared to nonrelativistic calculations that include the effects of final-state interaction, meson-exchange currents, and isobar configurations, and to relativistic calculations that include the effects of final-state interaction. The ratios of the response functions agree with both calculations; the absolute values are (16{plus minus}3{plus minus}8)% larger than predicted.
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