A high density polarized hydrogen gas target for storage rings

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

DOI:https://doi.org/10.1063/1.48601· OSTI ID:165897

Zapfe, K; Braun, B; Gaul, H; Grieser, M; Povh, B; Rall, M; Steffens, E; Stock, F; Tonhaeuser, J ^[1]; Montag, C; Rathmann, F; Fick, D ^[2]; Haeberli, W ^[3]

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1. Max-Planck-Institut fuer Kernphysik, 69029 Heidelberg (Germany)
2. Philipps-Universitaet, Fachbereich Physik, 35032 Marburg (Germany)
3. Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)

A storage cell target of polarized hydrogen gas was installed in a storage ring to study the target characteristics (nuclear polarization, target thickness, radiation resistance). The density of the target gas was enhanced by cooling the cell. Using a weak transverse guide field (5 G), the nuclear polarization of the target was measured to be 0.80{plus_minus}0.02 when atoms in a single hyperfine state were selected. The areal density of the target under these conditions was 5.5{center_dot}10{sup 13} {rvec H}/cm{sup 2} ({ital T}=115 K), while for two spin states (applicable to experiments in high energy rings, where a strong magnetic field can be applied to the target) the target thickness was found to be 8.2{center_dot}10{sup 13} {rvec H}/cm{sup 2}.

• Sponsoring Organization: USDOE
• OSTI ID: 165897
• 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
DENSITY
DESIGN
HYDROGEN 1 TARGET
PERFORMANCE
POLARIZATION
POLARIZED TARGETS
THICKNESS