Proton-proton interactions with polarized internal targets in storage rings

Journal Article · Sat Jul 15 04:00:00 EDT 1995 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.48654· OSTI ID:165856

Haeberli, W ^[1]

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1. Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)

Results of the first two experiments that use polarized hydrogen targets in proton storage rings are discussed. Both experiments used storage cell targets, i.e., long, narrow, windowless target cells into which polarized hydrogen atoms from an atomic-beam source are injected and through which the circulating beam passes. In the first experiment, carried out at the test storage ring of the Max Planck Institut in Heidelberg, a 27 MeV beam of alpha particles was passed through the target cell to measure the target polarization and the target thickness, and to investigate possible problems arising from background and from target depolarization by the beam. The target was used for a test of principle of the spin filter (spin-selective attenuation) as a means to polarize the circulating beam. The second experiment, currently in progress at the IUCF proton storage ring, has demonstrated the feasibility of spin correlation experiments at 200 MeV by detecting recoil protons in coincidence with scattered protons at forward angles. Both experiments used an improved atomic-beam source for polarized atoms and achieved target thicknesses of about 3{times}10{sup 13} polarized H/cm{sup 2} in a single hyperfine state of hydrogen.

• Sponsoring Organization: USDOE
• OSTI ID: 165856
• Report Number(s): CONF-9409103--
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 339; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
66 PHYSICS
DESIGN
DEUTERIUM TARGET
HYDROGEN 1 TARGET
MEV RANGE
PERFORMANCE
POLARIZATION
POLARIZED TARGETS
PROTON-PROTON INTERACTIONS