ACCELERATION OF POLARIZED PROTONS IN THE AGS WITH TWO HELICAL PARTIAL SNAKES.

Conference · Mon Jun 26 00:00:00 EDT 2006

OSTI ID:885005

HUANG, H; AHRENS, L A; BAI, M; BRAVAR, A; BROWN, K; COURANT, E D; GARDNER, C; GLENN, J W; LUCCIO, A U; MACKAY, W W; PTITSYN, V; ROSER, T; TEPIKIAN, S; TSOUPAS, N; WOOD, J; YIP, K; ZELENSKI, A; ZENO, K

Acceleration of polarized protons in the energy range of 5 to 25 GeV is particularly difficult: the depolarizing resonances are strong enough to cause significant depolarization but full Siberian snakes cause intolerably large orbit excursions and are not feasible in the AGS since straight sections are too short. Recently, two helical partial snakes with double pitch design have been built and installed in the AGS. With careful setup of optics at injection and along the ramp, this combination can eliminate the intrinsic and imperfection depolarizing resonances encountered during acceleration. This paper presents the accelerator setup and preliminary results.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: DOE/SC
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 885005
• Report Number(s): BNL-75488-2006-CP; R&D Project: 18026; KB0202011; TRN: US0603747
• Resource Relation: Conference: 10TH BIENNIAL EUROPEAN PARTICLE ACCELERATOR CONFERENCE (EPAC); EDINBURGH, UK; 20060626 through 20060630
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATION
ACCELERATORS
DEFECTS
DEPOLARIZATION
DESIGN
ENERGY RANGE
OPTICS
PROTONS