Mysterious dipole synchrotron oscillations during and after adiabatic capture

Ng, K.Y.

Fermi National Accelerator Laboratory

关键词: Synchrotron Oscillations;    43 Particle Accelerators;    Dipoles;    Accelerators;    Fermilab Accelerators;   

DOI  :  10.2172/1038934
RP-ID  :  FERMILAB-TM-2530-APC
RP-ID  :  AC02-07CH11359
RP-ID  :  1038934

美国|英语

来源: UNT Digital Library

【 摘 要 】

Strong synchrotron oscillations were observed during and after the 2.5-MHz rf adiabatic capture of a debunched booster batch in the Main Injector. Analysis shows two possible sources for the synchrotron oscillations. One is the frequency drift of the 2.5-MHz rf after the turning off of the 53-MHz rf voltage, thus resulting in an energy mismatch with the debunched beam. The second source is the energy mismatch of the injected booster beam with the frequency of the 53-MHz rf. We have been able to rule out the first possibility.