Adiabatic partial Siberian snake turn-on with no beam depolarization

Journal Article · Sun Mar 06 23:00:00 EST 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.72.1479· OSTI ID:5143363

Phelps, R A; Anferov, V A; Chu, C M; Courant, E D; Crandell, D A; Derbenev, Y S; Kaufman, W A; Koulsha, A V; Krisch, A D; Nurushev, T S; Raczkowksi, D B; Sund, S E; Wong, V K ^[1]; Caussyn, D D; Ellison, T J.P.; Lee, S Y; Sperisen, F; Stephenson, E J; von Przewoski, B ^[2]; Baiod, R ; Khiari, F Z; Ratner, L G; Sato, H ^[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) Energy Research Laboratory, King Fahd University, Dhahran 31261 (Saudi Arabia) Alternating Gradient Synchrotron Department, Brookhaven National Laboratory, Upton, New York, 11973 (United States) KEK, National Laboratory for High Energy Physics, 1-1 Oho, Tsukuba-shi, Ibaraki-ken 305 (Japan)

A recent experiment in the IUCF cooler ring studied the adiabatic turn-on of a partial Siberian snake at 370 MeV, where the spin tune, [nu][sub [ital s]] is 21/2 for all snake strengths. The snake consisted of two rampable warm solenoid magnets in series with a superconducting solenoid; this combination allowed varying the snake strength between about 0 and 25% at 370 MeV. We measured the beam polaraization after varying the snake either 1, 2, or 10 times; we found with good precision that no polarization was lost. This supports the conjecture that a Siberian snake can be ramped adiabatically at an energy where the spin tune is a half integer.

• OSTI ID: 5143363
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 72:10; 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
ADIABATIC PROCESSES
BARYONS
BEAM MONITORING
BEAMS
CORRECTIONS
CYCLIC ACCELERATORS
DIPOLE MOMENTS
ELECTRIC COILS
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ELECTROMAGNETS
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GEV RANGE 10-100
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POLARIZED BEAMS
PROTONS
RESONANCE
ROTATION
SOLENOIDS
SPIN ORIENTATION
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
WAVE FORMS