Touschek Lifetime Calculations for NSLS-II
The Touschek effect limits the lifetime for NSLS-II. The basic mechanism is Coulomb scattering resulting in a longitudinal momentum outside the momentum aperture. The momentum aperture results from a combination of the initial betatron oscillations after the scatter and the non-linear properties determining the resultant stability. We find that higher order multipole errors may reduce the momentum aperture, particularly for scattered particles with energy loss. The resultant drop in Touschek lifetime is minimized, however, due to less scattering in the dispersive regions. We describe these mechanisms, and present calculations for NSLS-II using a realistic lattice model including damping wigglers and engineering tolerances.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- Doe - Office Of Science
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 970507
- Report Number(s):
- BNL-90418-2009-CP; R&D Project: PO24; 39KC02000; TRN: US201002%%1248
- Resource Relation:
- Conference: PAC0905/04/2009; Vancouver, Canada; 20090504 through 20090508
- Country of Publication:
- United States
- Language:
- English
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