Experimental Test of New Technique to Overcome Spin Depolarizing Resonances

Journal Article · Tue Aug 04 00:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3215766· OSTI ID:21344451

Raymond, R S; Chao, A W; Krisch, A D; Leonova, M A; Morozov, V S; Sivers, D W; Wong, V K ^[1]; Ganshvili, A; Gebel, R; Lehrach, A; Lorentz, B; Maier, R; Prasuhn, D; Stockhorst, H; Welsch, D ^[2]; Hinterberger, F ^[3]; Kondratenko, A M ^[4]

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1. Spin Physics Center, University of Michigan, Ann Arbor, MI 48109-1040 (United States)
2. Forschungszentrum Juelich, Institut fuer Kernphysik, Postfach 1913, D52425 Juelich (Germany)
3. Helmholtz-Institut fuer Stahlen- und Kernphysik, Universitaet Bonn, D-53115 Bonn (Germany)
4. GOO Zaryad, Russkaya St. 41, Novosibirsk, 630058 (Russian Federation)

We recently tested a new spin resonance crossing technique, Kondratenko Crossing (KC) by sweeping an rf solenoid's frequency through an rf-induced spin resonance with both the KC an traditional Fast Crossing (FC) patterns. Using both rf bunched and unbunched 1.85 GeV/c polarized deuterons stored in COSY, we varied the parameters of both crossing patterns. Compared to FC with the same crossing speed, KC reduced the depolarization by measured factors of 4.7+-0.3 and 19+-{sub 5}{sup 12} for unbunched and bunched beams, respectively. This clearly showed the large potential benefit of Kondratenko Crossing over Fast Crossing.

• OSTI ID: 21344451
• Journal Information: AIP Conference Proceedings, Vol. 1149, Issue 1; Conference: SPIN 2008: 18. International Spin Physics Symposium, Charlottesville, VA (United States), 6-11 Oct 2008; Other Information: DOI: 10.1063/1.3215766; (c) 2009 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM DYNAMICS
BEAM MONITORING
COSY STORAGE RING
DEPOLARIZATION
DEUTERONS
ELECTRON SOURCES
ELECTRONS
GEV RANGE
LINEAR ACCELERATORS
POLARIZATION
POLARIZED BEAMS
RESONANCE
RF SYSTEMS
SOLENOIDS
SPIN
ACCELERATORS
ANGULAR MOMENTUM
BEAMS
CHARGED PARTICLES
CYCLIC ACCELERATORS
DYNAMICS
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ELEMENTARY PARTICLES
ENERGY RANGE
EQUIPMENT
FERMIONS
LEPTONS
MECHANICS
MONITORING
PARTICLE PROPERTIES
PARTICLE SOURCES
RADIATION SOURCES
STORAGE RINGS
SYNCHROTRONS