TY - GEN
T1 - Performance of High Voltage Bipolar Pulse Generator with Fast Push-Pull Solid-State Switch Modules
AU - Peplov, Vladimir V.
AU - Saethre, Robert B.
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/6
Y1 - 2018/6
N2 - Four identical pulse generators (pulsers) provide fast beam deflection in the Low Energy Beam Transport (LEBT) beam chopping system at the Spallation Neutron Source (SNS) Linac. The existing pulsers have become obsolete and need to be replaced to improve overall performance of the chopper system. A new bipolar pulse generator has been designed, and a prototype has been built and tested at the SNS. The generator uses fast push-pull transistor BEHLKE switch modules. It can produce a 1MHz burst of alternate 2.5kV with adjustable pulse widths during the 1-ms macro-pulse at a burst repetition frequency of 60Hz with rise/fall times of less than 40ns into a 100pF capacitive load. The performance enhancements of this new pulser in comparison with existing and previous versions of the pulse generator are discussed in the paper. The pulser can be used in applications requiring a series of bipolar ±3.5kV pulses, or unipolar pulses of positive or negative polarity with amplitude up to 4.5kV and various pulse widths with a minimum of 150ns. The maximum switching frequency, number of pulses, or burst repetition frequency in burst mode is limited by maximum power dissipation in the switches and other components. The features of this new pulser along with the results of timing control adjustments, timing and temperature measurements, and HV full power testing on the test stand are presented.
AB - Four identical pulse generators (pulsers) provide fast beam deflection in the Low Energy Beam Transport (LEBT) beam chopping system at the Spallation Neutron Source (SNS) Linac. The existing pulsers have become obsolete and need to be replaced to improve overall performance of the chopper system. A new bipolar pulse generator has been designed, and a prototype has been built and tested at the SNS. The generator uses fast push-pull transistor BEHLKE switch modules. It can produce a 1MHz burst of alternate 2.5kV with adjustable pulse widths during the 1-ms macro-pulse at a burst repetition frequency of 60Hz with rise/fall times of less than 40ns into a 100pF capacitive load. The performance enhancements of this new pulser in comparison with existing and previous versions of the pulse generator are discussed in the paper. The pulser can be used in applications requiring a series of bipolar ±3.5kV pulses, or unipolar pulses of positive or negative polarity with amplitude up to 4.5kV and various pulse widths with a minimum of 150ns. The maximum switching frequency, number of pulses, or burst repetition frequency in burst mode is limited by maximum power dissipation in the switches and other components. The features of this new pulser along with the results of timing control adjustments, timing and temperature measurements, and HV full power testing on the test stand are presented.
KW - pulse generator
KW - push-pull transistor switch
KW - timing control
UR - http://www.scopus.com/inward/record.url?scp=85077812540&partnerID=8YFLogxK
U2 - 10.1109/IPMHVC.2018.8936730
DO - 10.1109/IPMHVC.2018.8936730
M3 - Conference contribution
AN - SCOPUS:85077812540
T3 - 2018 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2018
SP - 26
EP - 30
BT - 2018 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2018 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2018
Y2 - 3 June 2018 through 7 June 2018
ER -