17–22 May 2026
C.I.D
Europe/Zurich timezone

Accelerating through partial snake resonances with betatron coupling spin resonance compensation

WEP4333
20 May 2026, 16:00
2h
C.I.D

C.I.D

Deauville, France
Poster Presentation MC4.A30: Hadron accelerators: Polarized beams Poster session

Speaker

Vincent Schoefer (Brookhaven National Laboratory)

Description

Partial snakes are used at the Brookhaven AGS to avoid strong vertical spin resonances during acceleration of polarized proton beam from 2.5 to 23 GeV. An unfortunate side effect is that these snakes excite numerous weak resonances associated with the horizontal betatron motion. We present experimental demonstration and operational experience of the compensation of these resonances during acceleration by exciting betatron coupling with a set of 15 pulsed skew quadrupoles.

Funding Agency

Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy.

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Authors

Eiad Hamwi (Cornell University (CLASSE)) Haixin Huang (Brookhaven National Laboratory) Mr Jonathan Laster (Brookhaven National Laboratory) Keith Zeno (Brookhaven National Laboratory) Kiel Hock (Brookhaven National Laboratory) Levente Hajdu (Brookhaven National Laboratory) Vincent Schoefer (Brookhaven National Laboratory) Weijian Lin (Brookhaven National Laboratory)

Presentation materials

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