title: Observation of a hybrid spin resonance
abstract: A new type of spin depolarization resonance has been observed at the Brookhaven Alternating Gradient Synchrotron (AGS). This spin resonance is identified as a strong closed-orbit sideband around the dominant intrinsic spin resonance. The strength of the resonance was proportional to the 9th harmonic component of the horizontal closed orbit and proportional to the vertical betatron oscillation amplitude. This "hybrid" spin resonance cannot be overcome by the partial snake at the AGS, but it can be corrected by the harmonic orbit correctors.
authors.affiliation: Department of Physics, Indiana University, Bloomington, Indiana 47405 and Brookhaven National Laboratory, Upton, New York 11973 and Argonne National Laboratory, 9700 Cass Avenue, Argonne, Illinois 60439, USA.
authors.initials: M
authors.lastname: Bai
authors.initials: C
authors.lastname: Allgower
authors.initials: L
authors.lastname: Ahrens
authors.initials: J
authors.lastname: Alessi
authors.initials: K
authors.lastname: Brown
authors.initials: G
authors.lastname: Bunce
authors.initials: P
authors.lastname: Cameron
authors.initials: CM
authors.lastname: Chu
authors.initials: ED
authors.lastname: Courant
authors.initials: JW
authors.lastname: Glenn
authors.initials: H
authors.lastname: Huang
authors.initials: D
authors.lastname: Jeon
authors.initials: AE
authors.lastname: Kponou
authors.initials: K
authors.lastname: Krueger
authors.initials: A
authors.lastname: Luccio
authors.initials: YI
authors.lastname: Makdisi
authors.initials: SY
authors.lastname: Lee
authors.initials: L
authors.lastname: Ratner
authors.initials: K
authors.lastname: Reece
authors.initials: T
authors.lastname: Roser
authors.initials: H
authors.lastname: Spinka
authors.initials: MJ
authors.lastname: Syphers
authors.initials: N
authors.lastname: Tsoupas
authors.initials: DG
authors.lastname: Underwood
authors.lastname: van Asselt W
authors.initials: N
authors.lastname: Williams