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RIS citation export for TUPO007: FRIB Fast Machine Protection System: Chopper Monitor System Design

TY  - CONF
AU  - Li, Z.
AU  - Chabot, D.
AU  - Cogan, S.
AU  - Lidia, S.M.
AU  - Webber, R.C.
ED  - Pei, Guoxi
ED  - Schaa, Volker RW
ED  - Chin, Yong Ho
ED  - Fu, Shinian
ED  - Zhao, Ning
TI  - FRIB Fast Machine Protection System: Chopper Monitor System Design
J2  - Proc. of LINAC2018, Beijing, China, 16-21 September 2018
CY  - Beijing, China
T2  - Linear Accelerator Conference
T3  - 29
LA  - english
AB  - The Facility for Rare Isotope Beams tunes the beam power from 0 to 400KW by chopping the beam current with a beam chopper in the Low Energy Beam Transport. A chopper monitoring system is employed to verify proper chopper operation to avoid delivery of undesired high-powered beam and to inhibit beam for machine protection purposes. The system monitors the incoming beam gate time structure, the chopper switch high voltage pulses, the chopper electrode charge/discharge currents, and the status of machine protection system. It is designed to switch off the beam within tens of nanoseconds of a detected fault. Chal-lenges include a dynamic beam gate pulse structure with pulse lengths as short as 0.6 µs and high voltage power supply current pulses of ~25 ns. A high speed "integrate and hold circuit with reset", Field Program-mable Gate Array based digital control circuit and high speed ADC circuit were developed to fulfil the re-quired functions. Design approach, simulation, and test results with the beam are the focus of this paper.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 336
EP  - 338
KW  - FPGA
KW  - controls
KW  - machine-protect
KW  - high-voltage
KW  - power-supply
DA  - 2019/01
PY  - 2019
SN  - 2226-0366
SN  - 978-3-95450-194-6
DO  - DOI: 10.18429/JACoW-LINAC2018-TUPO007
UR  - http://jacow.org/linac2018/papers/tupo007.pdf
ER  -