First test of a partial Siberian snake during polarized beam acceleration

Journal Article · Mon Sep 19 00:00:00 EDT 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.73.1621· OSTI ID:6913345

Blinov, B B; Chu, C M; Courant, E D; Crandell, D A; Kaufman, W A; Krisch, A; Nurushev, T S; Phelps, R A; Raczkowski, D B; Ratner, L G; Wong, V K ^[1]; Caussyn, D D; Derbenev, Y S; Ellison, T J.P.; Lee, S Y; Rinckel, T; Schwandt, P; Sperisen, F; Stephenson, E J; von Przewoski, B ^[2] ; Baiod, R; Minty, M G; Ohmori, C; Wienands, U ^[3]

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1. Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1120 (United States)
2. Indiana University Cyclotron Facility, Bloomington, Indiana 47408-0768 (United States)
3. Fermilab, Batavia, Illinois 60510 (United States) Stanford Linear Accelerator Center, Stanford, California 94309 (United States) Institute for Nuclear Study, University of Tokyo, Tanashi, Tokyo 188 (Japan) Superconducting Super Collider Laboratory, Dallas Texas (United States)

We recently studied the first acceleration of a spin-polarized beam through a depolarizing resonance using a partial Siberian snake. We accelerated polarized protons from 95 to 140 MeV while ramping a 10% partial Siberian snake along with the acceleration cycle. The 10% partial snake suppressed all observable depolarization due to the [ital G][gamma]=2 imperfection depolarizing resonance which occurred near 108 MeV during acceleration. However, 20% and 30% partial Siberian snakes apparently moved the [ital G][gamma]=7[minus][nu][sub [ital y]] intrinsic depolarizing resonance from near 177 MeV into our energy range; this caused some interesting but not-yet-fully understood depolarization.

• OSTI ID: 6913345
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 73:12; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430200* -- Particle Accelerators-- Beam Dynamics
Field Calculations
& Ion Optics
ACCELERATION
ACCELERATORS
BARYONS
BEAMS
CORRECTIONS
CYCLIC ACCELERATORS
DATA
DEPOLARIZATION
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HADRONS
INFORMATION
MEV RANGE
MEV RANGE 10-100
MEV RANGE 100-1000
NUCLEONS
NUMERICAL DATA
ORIENTATION
POLARIZED BEAMS
PROTONS
RESONANCE
SPIN ORIENTATION
THEORETICAL DATA