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TY - CPAPER AU - Kongtawong, S. AU - Klysubun, P. AU - Krainara, S. AU - Sudmuang, P. TI - Improvement of Tune Measurement System at Siam Photon Source J2 - Proc. of International Beam Instrumentation Conference (IBIC2015), Melbourne, Australia, 13-17 September 2015 AB - A new tune measurement system was recently developed and implemented at Siam Photon Source (SPS) for both the booster synchrotron and the 1.2 GeV electron storage ring. A new electronic module was installed at the SPS booster for collecting the turn-by-turn signal generated when the beam is excited with white noise and fast kicker. The beam excitation was carefully studied in order to determine the optimum beam response. With this system we observed the variation of the tune during energy ramping. The measurement provides information needed to optimise the working tune and to keep it constant. At the SPS storage ring, the excitation signal was changed from swept frequency signal to frequency modulation (FM) signal to reduce the measurement time. Details of the instrumentation setup and its performance will be presented in this report. PB - JACoW CY - Geneva, Switzerland SP - 184 EP - 186 KW - booster KW - storage-ring KW - electron KW - injection KW - betatron DA - 2016/01 PY - 2016 SN - 978-3-95450-176-2 DO - 10.18429/JACoW-IBIC2015-MOPB056 UR - http://accelconf.web.cern.ch/AccelConf/IBIC2015/papers/mopb056.pdf ER -