NSLS-II Seminar

"Touschek Lifetime and Higher order Multipole Errors for NSLS-II"

Presented by Boaz Nash

Thursday, May 21, 2009, 11:00 am — NSLS-II Seminar Room, Bldg. 817

Touschek scattering is the limiting lifetime mechanism for beam loss in medium energy high brightness synchrotron light sources.
The lifetime depends on a number of factors including the beam sizes that are determined by the linear optics, and the momentum acceptance which is determined by either the non-linear dynamics (off-momentum dynamic aperture) or the RF acceptance. One issue which we have found to impact the momentum acceptance is higher order multipole errors in the quadrupoles and sextupoles. I review the sources and expected magnitude of these errors and discuss their impact on Touschek Lifetime for NSLS-II.

Hosted by: Sam Krinsky

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