Author: Li, Y.T.
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THPMW015 A Digtal Regulation Controller Prototype for the TPS Booster Power Supplies 3570
  • B.S. Wang, Y.-C. Chien, Y.T. Li, C.Y. Liu, K.-B. Liu, Y.S. Wong
    NSRRC, Hsinchu, Taiwan
  In the newly built TPS (Taiwan Photon Source), the AC power supplies of the Booster ring are required to operate in DC and AC mode with accuracy. Especially in AC mode, during the booster ramping process, the current ramping profiles of the Quadruple Magnets have to track that of the Dipole AC power supply with precise phase and amplitude to maximize the beam energy boost efficiency. At present, analog current commands for all the booster power supplies with relative phase and amplitude information are generated externally. The current ramping profiles are pre-calculated and calibrated in a centralized manner. In this paper, an auto-calibration process using Curve-Fitting algorithm is proposed. In the new process, the current ramping profile data is first stored digitally in each power supply and then outputted to each power supply with a synchronous trigger signal in hope to eliminate the signal integrality problem inherent in analog signals , so that the beam energy boost up could be more reliable and efficient. The new proposed method has been implemented and tested successfully and will be applied to the booster power supplies to test its performance in the future.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMW015  
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THPMW017 Phase Shifter Power Supply Design 3576
  • Y.T. Li, K.-B. Liu, B.S. Wang, Y.S. Wong
    NSRRC, Hsinchu, Taiwan
  Taiwan Photon Source is an interdisciplinary project. The phase-shift magnet is used to connect the radiation phase between two EPU48s. The power supply for this phase-shift magnet is a key element to determine the phase shift quality. In this report, the theory of the designed circuit is firstly introduced, and then a comparison simulation result and actual measurement is summarized to prove the correctness of theoretical analysis and circuit design.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMW017  
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