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Correct chromaticities of circular accelerators without sextupoles

Conference ·
OSTI ID:621761
A new method of correcting chromaticities of circular accelerators is introduced. Instead of using two families of sextupoles, as the standard way to correct chromaticities, two pairs of TM(210) mode RF cavities are used. The betatron phase advances (both horizontal and vertical) between the two cavities are set to be a multiple of it, and a proper momentum compaction is required. With this method, sextupole nonlinear terms are eliminated. There are octupole terms left by this method. However, they are explicit and should be easy to compensate. An example lattice demonstrates the method. The power required for the RF cavities is estimated.
Research Organization:
Stanford Linear Accelerator Center, CA (United States)
Sponsoring Organization:
USDOE Office of Energy Research, Washington, DC (United States)
DOE Contract Number:
AC03-76SF00515
OSTI ID:
621761
Report Number(s):
SLAC-PUB--7195; CONF-960621--; ON: DE97009063
Country of Publication:
United States
Language:
English