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Charles, T.K.

Paper Title Page
WEPEA003 Time Resolved Tune Measurements and Stability Analysis of the Australian Synchrotron Booster 2472
 
  • T.K. Charles
    Monash University, Faculty of Science, Victoria
  • M.J. Boland, R.T. Dowd, M.J. Spencer, Y.E. Tan
    ASCo, Clayton, Victoria
 
 

The Australian Synchrotron booster synchrotron accelerates electrons from 100 MeV to 3 GeV in 600 ms. The fractional tune components that were measured are presented in two graphical formats showing the time-resolved measurement of the horizontal and vertical tunes. This experiment demonstrated that the current in the booster was extremely sensitive to the ratio of BF to BD combined-function magnets. Large variations of the fractional tunes were found to follow the differences in the gradients of the BD and BF combined-function magnet ramping curves and with this knowledge, alterations were made to the ramping table increasing the efficiency of the booster by on average 40%. Rapid fluctuation of the tunes meant that it could not be distinguished during the first 80ms of the ramp. Multiple side bands to the revolution harmonic were visible during a minimal sweep time of 2.5ms, during this first 80ms.