Proton and neutron polarized targets for nucleon-nucleon experiments at SATURNE II

A SATURNE polarized target has been used far nucleon-nucleon elastic scattering and transmission experiments for 15 years, Continuous improvements resulted in a flexible and reliable facility for spin physics. The polarized proton target was a 70 cm(3) cartridge loaded with pentanol-2, a promising material according to the results obtained. The new acquisition system and dal-a processing was based on the LabView/PC software and increased the accuracy of polarization measurements. For a polarized neutron target, two cartridges loaded with (LiD)-Li-6 and (LiH)-Li-6 were set in the refrigerator and could be quickly inserted in the beam. Results from the the first experiments using Li-6 materials in quasielastic pp or pn analyzing power measurements are compared with the same observables measured in free nucleon-nucleon scattering using polarized proton targets. The angular resolution distributions for theta(CM) determination and azimuthal coplanarity are shown for different targets in nucleon-nucleon scattering. A comparison of analyzing power results for elastic and quasielastic scattering suggests that the contribution of inelastic processes to quasielastic pn scattering may be suppressed by additional constraints.