Preliminary studies of a chromaticity tracker

Tan, Cheng-Yang

Fermi National Accelerator Laboratory

关键词: Betatrons;    43 Particle Accelerators;    Beam Monitors;    Modulation Accelerators;    Accelerators;   

DOI  :  10.2172/891085
RP-ID  :  FERMILAB-TM-2346-AD
RP-ID  :  AC02-76CH03000
RP-ID  :  891085

美国|英语

来源: UNT Digital Library

【 摘 要 】

A chromaticity tracker based on a method by D. McGinnis is proposed. This method starts with the slow modulation of the accelerating RF which causes the beam to respond to it. This beam modulation can be detected transversely with a Schottky pickup which after phase demodulation, the chromaticity can be calculated from it. However, to perform phase demodulation, the carrier frequency which is the betatron tune needs to be identified. The identification of the carrier frequency falls naturally onto the phase locked loop tune tracker which when locked to the betatron tune outputs this value in real time.