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Description
Over the past decade, the Taiwan Photon Source (TPS) has deployed a wide range of insertion devices (IDs), including IU22, EPU46/48, EPU66, EPU56, and the recent EPU66S, to support advanced beamline requirements in photon-energy tuning and polarization control. In parallel, the associated control systems have undergone continuous research, development, and integration. The architecture has evolved from EPICS-based cPCI and Galil platforms into modern systems incorporating distributed EtherCAT I/O modules, absolute encoder feedback, enhanced diagnostics, and improved safety-interlock mechanisms, significantly strengthening reliability and maintainability.
This paper reviews ten years of TPS ID control-system development, covering multi-axis gap/phase closed-loop strategies, mechanical drive characteristics, monitoring functions, and mitigation of operational issues such as torque imbalance, phase-axis trips, thermal events, and encoder anomalies. Differences among ID generations are summarized to illustrate their impact on performance and stability. The results provide practical insights for future TPS upgrades and the design of next-generation undulator control architectures.
| In which format do you inted to submit your paper? | LaTeX |
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