Impact of Arc Phase Advance Tuning on Chromatic Optics in the RHIC*

The phase advance between the two interaction points in RHIC is optimized for dynamic aperture for a initial design beta-star. This may not hold true as RHIC presently operates with a considerably reduced beta-star. Additionally the reduction of the available beam aperture due to an enlarged chromat...

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Detalles Bibliográficos
Autores principales: Calaga, R, de Maria, R, Miyamoto, R, Robert-Demolaize, G, Tomas, R, Vanbavinckhove, G, White, S
Lenguaje:eng
Publicado: 2011
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/1382444
Descripción
Sumario:The phase advance between the two interaction points in RHIC is optimized for dynamic aperture for a initial design beta-star. This may not hold true as RHIC presently operates with a considerably reduced beta-star. Additionally the reduction of the available beam aperture due to an enlarged chromatic beta-beating is evident. Measurements of the chromatic optics in the RHIC are presented along with the proposal to optimize the arc phase advance between the two IPs to adjust the chromatic beta-beating. Measurements of chromatic optics from the LHC at injection and top energy are presented.

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