Keyword: klystron
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WEPD26 Development of Fast Controls for Beam Wire Scanner for SuperKEKB linac, controls, EPICS, beam-transport 57
 
  • A. Roy
    VECC, Kolkata, India
  • K. Furukawa, N. Iida
    KEK, Ibaraki, Japan
  • T. Okazaki
    EJIT, Hitachi, Ibaraki, Japan
 
  Recent development towards the data acquisition system of the wire scanner (WS) systems of the SuperKEKB injector linac (LINAC) and beam transport lines (BT's) is described. A VME based system, comprised of charge sensitive ADC (CSADC) board, scaler board, DAC board and Event receiver board, has been installed. The primary aim of the system is to utilise global linac event timing system for synchronized and mode-dependent data acquisition. A set of EPICS device driver has been developed for new hardware e.g. CSADC, scaler and DAC boards. The combination of latest versions of firmware and EPICS device driver forμResearch Finland (MRF) Event receiver board is also evaluated and further incorporated in this system. The application software is developed for simultaneous acquisition of multiple beam mode data during multimode injection of the LINAC. The developed system is tested successfully after integrating with the existing wire scanner driving mechanism. The system enables the beam size measurements at four consecutive locations, that derive Twiss parameters and ensure the reliable beam transport to four downstream storage rings.  
poster icon Poster WEPD26 [0.245 MB]  
 
THPD45 Overview of Control System for 30MeV RF Source controls, linac, interlocks, gun 222
 
  • R.B. Chavan, S. Chandan, K. Dixit, K.C. Mittal, A.R. Tillu, V. Yadav
    BARC, Mumbai, India
 
  Control system for RF source of 30 MeV, 3 kW RF Linac for neutron generation is being developed. The system consists of two 15 MeV linac structures, each powered independently with klystron rated for 7.5 MW(pk)/7.5 kW(avg). Two klystron modulators of 160kV, 110A, 7usec and 250Hz feed pulsed power into the klystron, which produces RF power at 2856 MHz. The klystrons will be driven by low power RF driver amplifiers programmed for matching phase, frequency and power into the linac. Both the driver amplifiers are controlled through RS-232 Protocol. The HV pulsing and RF drive for the klystron has been interlocked with water flow, arc detector, SF6 gas pressure etc. The control system is designed using Real time embedded controller, where pulses for synchronization are being generated in FPGA. Most of the power supplies like electromagnet, HVDC, etc. are on RS-232 protocol. These power supplies are controlled via suitable RS-232 to Ethernet converter. State machine topology is being used to design the logic. The database for logging data is developed in SQL. This paper describes the details of the software implementation and hardware used to realize the control of the RF power source.  
poster icon Poster THPD45 [2.248 MB]