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TY - CONF AU - Krist, P. AU - Cervenka, V. AU - Poklop, D. AU - Stursa, J. AU - Vozáb, J. ED - Conradie, Lowry ED - De Villiers, John Garrett ED - Schaa, Volker RW TI - Synchronization and High Speed High Voltage Switcher for Pulse Bunching System of the Cyclotron U-120M J2 - Proc. of Cyclotrons2019, Cape Town, South Africa, 23-27 September 2019 CY - Cape Town, South Africa T2 - International Conference on Cyclotrons and their Applications T3 - 22 LA - english AB - Pulse bunching system for neutron time of flight (ToF) measurements on the cyclotron U-120M exploits a unique pulsed vertical deflection of the selected final orbits of the internal accelerated beam of the H⁻ ions to an extractor-stripper. This system is described in details on an individual poster of this conference. A key device is the pulse HV power supply (HV switcher) which is supplying the deflector and elevates H⁻ ions in defined time structure to an extractor-stripper. The developed HV switcher is based on the SiC MOSFET transistors. It can provide HV pulses with the following pulse parameters: amplitude up to 13 kV, front edge less than 20 ns, flat top 20 ns, back edge less than 20 ns and repetition frequency up to several hundred of kHz. We have also developed the pulse synchronization with the cyclotron RF (25 MHz), which enables to set up front edge of bunching pulses within 2pi with accuracy 80 ps. Human-machine interface is based on SCADA software Reliance and PLC Tecomat Foxtrot. The time waveforms of the real pulses are part of the presentation. PB - JACoW Publishing CP - Geneva, Switzerland SP - 83 EP - 85 KW - cyclotron KW - neutron KW - proton KW - PLC KW - bunching DA - 2020/06 PY - 2020 SN - 978-3-95450-205-9 DO - doi:10.18429/JACoW-Cyclotrons2019-MOP023 UR - http://jacow.org/cyclotrons2019/papers/mop023.pdf ER -