Polarized Proton Acceleration in the AGS with Two Helical Partial Snakes

Journal Article · Wed Jun 13 00:00:00 EDT 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2750921· OSTI ID:21064061

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 ^[1]; Lin, F ^[2]; Okamura, M ^[3]

---

1. Brookhaven National Laboratory, Upton, NY 11973 (United States)
2. Indiana University, Bloomington, IN 47405 (United States)
3. Radiation Laboratory, RIKEN, Saitama (Japan)

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 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.

• OSTI ID: 21064061
• Journal Information: AIP Conference Proceedings, Vol. 915, Issue 1; Conference: 17. international spin physics symposium, Kyoto (Japan), 2-7 Oct 2006; Other Information: DOI: 10.1063/1.2750921; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATION
BEAM FOCUSING MAGNETS
BEAM INJECTION
BEAM OPTICS
BEAM PRODUCTION
BROOKHAVEN AGS
DEPOLARIZATION
GEV RANGE
MAGNETIC FIELD CONFIGURATIONS
ORBITS
POLARIZATION
POLARIZED BEAMS
PROTON BEAMS
PROTONS
RESONANCE