Author: Styuf, A.S.
Paper Title Page
WEPPD029 Fast Tune Measurement System 611
 
  • E.A. Bekhtenev, V.P. Cherepanov, G.V. Karpov, A.S. Styuf
    BINP SB RAS, Novosibirsk, Russia
 
  Tune measurement system developed in Budker Institute of Nuclear Physics provides fast and accurate measurements of fractional part of betatron tunes in electron-positron storage rings and accelerators. The tune measurements rate can achieve 1 kHz. It is especially important for electron-positron accelerators to have tunes measurement data for each phase of accelerating cycle. The developed system is planed to be installed at the NSLS-II Booster Synchrotron. The system can perform up to 330 measurements during 300 ms time interval of Booster energy ramping. The kicking technique is used as measurement method. The kicks are carried out by a radio frequency (RF) pulses. Each RF pulse contains two frequencies and thus can simultaneously excite the horizontal and vertical betatron oscillations. All signal processing including FFT is performed inside FPGA. The tune measurement accuracy is better than 0.0005. The developed system was put into operation at the February 2011 in VEPP-3 electron-positron storage ring at BINP.  
 
WEPPD030 New Beam Position Monitor Electronics For VEPP-5 Preinjector 614
 
  • A.S. Styuf, G.V. Karpov
    BINP SB RAS, Novosibirsk, Russia
 
  A new beam position monitor (BPM) electronics has been designed, manufactured and tested in VEPP-5 preinjector. Preinjector BPM system measures position of single electron and positron bunches for each injection cycle. New BPM electronics provides more high sensitivity with respect to existing one developed in 2004. The system can measure the position of bunches with 108 - 1010 particles per bunch. The resolution of measurements of single bunch is better than 10 mkm for 1010 particles per bunch. The features of BPM electronics design, the main parameters and results obtained in VEPP-5 preinjector are presented.