Control System for a Cryogenic Permanent Magnet Undulator at the Taiwan Photon Source

A hybrid cryogenic permanent-magnet undulator (CPMU) with a 15-mm period length is being constructed for a TPS Phase-II beamline. A control system for this CPMU (CU15) is under development since 2018 and is based on the Experimental Physics and Industrial Control System (EPICS) architecture and Ethe...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2020-06, Vol.30 (4), p.1-5
Main Authors: Liao, Chih-Yu, Wu, Chun-Yi, Chen, Jenny, Lee, Demi, Chen, Hong-Zhe, Cheng, Yung-Sen, Hu, Kuo-Hwa, Hsu, Kuo-Tung
Format: Article
Language:English
Subjects:
Coders
Control systems
Cryogenic equipment
cryogenic permanent-magnet undulator
Cryogenic temperature
Cryogenics
Ethernet
Gauges
Industrial electronics
Insertion device
Ion pumps
Monitoring
motion control
Permanent magnets
Power supplies
Temperature control
Temperature sensors
Undulators
Vibration monitoring
Vibrations
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Description
Summary:A hybrid cryogenic permanent-magnet undulator (CPMU) with a 15-mm period length is being constructed for a TPS Phase-II beamline. A control system for this CPMU (CU15) is under development since 2018 and is based on the Experimental Physics and Industrial Control System (EPICS) architecture and Ethernet Control Automation Technology (EtherCAT) framework. The main control components include a motor with encoder for gap adjustment, corrector magnet power supplies, ion pumps and BA gauges for the vacuum system, resistance temperature detectors (RTD) and heaters for temperature control of the cryogenic environment and magnet arrays, motion safety interlock, cryogenic system and vibration monitor system. The design and implementation of the CU15 control system will be summarized in this paper.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2019.2959729