Chiu, P. C.

Paper	Title	Page
TUP045	Preliminary Test of EPICS Waveform Support for TPS	185
	Y.-S. Cheng, J. Chen, Y. K. Chen, P. C. Chiu, K. T. Hsu, K. H. Hu, C. H. Kuo, C. Y. Wu NSRRC, Hsinchu
	The TPS (Taiwan Photon Source) is newly proposed the 3 GeV synchrotron light source project. The control system of TPS is based upon EPICS framework. Waveform acquisition supports are essential for the commissioning and operation. The EPICS IOCs, scope IOCs, digitizers and oscilloscopes can support to acquire waveform through EPICS channel access. The EDM is used to implement the operation interface. The control environments of TPS provide specific operation EDM pages of waveform acquired from EPICS IOC, digitizers and oscilloscopes with various sampling rate and vertical resolution. The environment is implemented and tested at the Taiwan Light Source (TLS). The efforts will be summaries at this report.
	Poster
TUD006	Design Status of the TPS Control System	355
	K. T. Hsu, Y.-T. Chang, J. Chen, Y. K. Chen, Y.-S. Cheng, P. C. Chiu, S. Y. Hsu, K. H. Hu, C. H. Kuo, D. Lee, C.-J. Wang, C. Y. Wu NSRRC, Hsinchu
	The Taiwan Photon Source (TPS) project will build a new 3 GeV synchrotron light source at the site of NSRRC. Refinement of the TPS control system design is on going. The control system is based on EPICS toolkits framework. Guidelines for hardware platform and operating system choice will be addressed. Various EPICS test bed has be setup to evaluate selected hardware and software components. The TPS control system will provide versatile environments for machine commissioning, operation, and accelerator research. The open architecture will facilitate machine upgrade, modification easily and minimize efforts for machine maintenance. Performance and reliability of the control system will be guaranteed from the initial design phase. Current efforts will be summary in this report.
THP062	Performance Studies of an Integrated Orbit Feedback System with Slow and Fast Correctors	779
	P. C. Chiu, K. T. Hsu, C. H. Kuo NSRRC, Hsinchu
	Simulation study and experiments of an integrated orbit feedback system of the combined slow and fast correctors is under way. The slow correctors have the stronger trim strength with slower response while the fast ones have weaker strength but faster response. The integrated system can transfer DC corrections smoothly from fast correctors to slow ones to avoid possible saturation of the fast correctors as well as has an advantage of capability to suppress fast transient orbit drift. The simulation of the system performance will be presented and its application for TLS and TPS will also be discussed.
	Poster
THP064	Orbit Feedback in Taiwan Light Source	785
	C. H. Kuo, J. Chen, P. C. Chiu, K. T. Hsu, K. H. Hu NSRRC, Hsinchu
	The global orbit feedback system is indispensable for the Taiwan Light Source (TLS) operation. The existed orbit feedback system has been deployed for a decade to stabilize electron closed orbit. This orbit feedback system is used to suppress various perturbations include orbit excursion due to insertion device operation in TLS. To take advantage of advanced in BPM and power supply technology, the feedback system is upgraded recently accompany with BPM electronic and corrector power supply upgrade; infrastructure of new system has also been modified and rebuilt. Orbit stability is improved drastically. Efforts of digital BPM (Libera Brillance), PWM power supply, orbit feedback system, on-line system modeling, diagnostic access, and control rules upgrade with reduced ill-conditioned response matrix will be presented in this report. Planning the global orbit feedback system based upon experiences accumulate form TLS project for the newly proposed Taiwan Photon Source (TPS) will be summary also.
	Poster