Measurement of the \(pp\) analyzing power in the vicinity of 2.20 GeV
1999
The pp elastic scattering analyzing power was measured in small energy steps in the vicinity of the accelerator depolarizing resonance \(\gamma G= 6 \) at 2.202 GeV. A vertically polarized proton beam was extracted from SATURNE II at energies above the resonance and passed through different copper degraders. The beam was focused on the beam line polarimeter CH\(_2\) target. Its halo was removed by four powerful magnets. Measurements at degraded energies were complemented by data obtained with the directly extracted polarized beam outside the resonance region. Analyzing power results at fixed laboratory angles are compared with existing data in the region under discussion, with polynomial fits from 1.6 to 3.5 GeV, and with phase shift analysis predictions.
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