Commissioning of the Taiwan Photon Source

Kuo, C.C.; Chen, Chien‐Te; Chen, Jiaye; Chiu, Mau-Sen; Chou, Pin-Fenn; Hsu, K.T.; Liu, Yuen; Luo, G.H.; Tsai, Hung-Jen; Tseng, Fan-Hsin

doi:10.18429/jacow-ipac2015-tuxc3

Cited by 17 publications

(10 citation statements)

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“…Since its beam delivery on December 31, 2013, the TPS has consistently achieved world-class beam quality and performance standards. Continuous updates and improvements to the entire system are crucial to maintain and enhance the research facility's environment [1,2]. This research focuses on designing and developing the current feedback component of a TPS-corrected magnet power supply.…”

Section: Introductionmentioning

confidence: 99%

Design and implementation of a temperature-compensated corrector magnet power supply for the Taiwan Photon Source

Wang

Liu

et al. 2023

J. Inst.

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The Taiwan Photon Source (TPS) is a widely recognised 3 GeV synchrotron light source. It has demonstrated exceptional performance in average beam downtime and meeting international standards over its successful ten-year operation. Regular equipment updates are conducted for all subsystems to ensure continuous improvement and maintain an optimal research facility environment. This study focuses on designing and implementing a temperature-compensated corrector magnet power supply for the TPS. The power supply incorporates a high-bandwidth, compact, cost-effective, bipolar, and highly precise shunt resistor as the current feedback component. A temperature control copper box and temperature compensation circuit are employed to improve the thermal equilibrium time of the output current. A laboratory-developed TPS-corrected magnet power supply with temperature compensation control has been successfully developed through these measures. The prototype exhibits a maximum output current of 10 A and operates at a voltage of 40 V. Metal-oxide-semiconductor field-effect transistors (MOSFETs) are utilised as the power switch in a full-bridge (H-bridge) configuration with a driving frequency of 40 kHz. The output current ripple is effectively maintained at 100 μA for a 10 A output, and the stabilisation time is achieved within 5 minutes. The control loop design of the prototype has been verified to achieve fast and stable output current performance. The completed prototype demonstrated a -3 dB bandwidth of 2.57 kHz when tested with an input reference signal of 0.1 V. Finally, a hardware prototype circuit was constructed in the power supply laboratory, featuring an input voltage of 48 V, an output current of 10 A, and a maximum power capacity of 400 W.

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Section: Introductionmentioning

confidence: 99%

Design and implementation of a temperature-compensated corrector magnet power supply for the Taiwan Photon Source

Wang

Liu

et al. 2023

J. Inst.

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show abstract

“…TPS is widely recognized for its world-class beam quality and performance standards. Continuous improvement and system updates are crucial for maintaining and enhancing the research facility's environment [1,2]. The focus of this study is the design and development of a fully digitalized TPS correction magnet power supply.…”

Section: Introductionmentioning

confidence: 99%

Development of DSP-based TPS fully digital correction magnet power supply

2023

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The Taiwan Photon Source (TPS) is a third-generation 3 GeV synchrotron accelerator light source. After successfully operating for ten years since its first light in 2013, various subsystems are undergoing updates. In the context of magnet power supply upgrades, the trend toward digitization and high-precision modulation control is driving advancements worldwide. This study focuses on developing a fully digital correction magnet power supply (FDCMPS) based on a digital signal processor (DSP). The prototype utilizes a low-power, floating-point DSP with multiple communication functionalities as the core control unit. The output current is converted into digital values using current sensors and high-precision analog-to-digital converters. Discrete PI compensator algorithms are implemented within the DSP to generate pulse-width modulation (PWM) waveforms, driving a full-bridge (H-bridge) converter configuration with metal-oxide-semiconductor field-effect transistors (MOSFET). This forms a complete, fully digital closed-loop current control system. A virtual control interface is designed to operate the FDCMPS state. The control loop design of the prototype has been validated and demonstrates stable output bipolar current performance. When tested with a 0.1 V input reference signal, the prototype achieves a -3 dB bandwidth of 2.03 kHz. Finally, a hardware prototype circuit was constructed in the power supply laboratory, with an input voltage of 48 V, an output current of 10 A, and a maximum power of 400 W. Overall, the developed fully digital correction magnet power supply prototype showcases stable and high-performance output bipolar current performance. The system achieves total harmonic distortion of output current ripple within 0.3 mA peak to peak and long-term stability within ± 15 ppm. The successful implementation of the prototype establishes a solid foundation for advancing magnet power supply technology at the TPS.

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“…The Taiwan Photon Source (TPS) operates as a 3-GeV light source with a harmonic number of 864, situated at the NSRRC. In the typical operational scenario, the storage ring accommodates around 650 bunches [1]. The injection process relies on four kickers, and inherent to this injection scheme is the inevitability of beam perturbations due to the mismatch of these four kickers [2,3].…”

Section: Introductionmentioning

confidence: 99%

Online bunch-by-bunch position monitoring and analysis at the Taiwan Photon Source

Huang,

Hsu,

Chen

et al. 2023

J. Inst.

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The online bunch-by-bunch position monitor has been established through the utilization of a high-speed analog-to-digital converter, synchronized meticulously with the accelerator's radio frequency. This implementation serves the purpose of refining the alignment of the four injection kickers. A substantial volume of data needs to be managed when dealing with the motion of the bunches. To untangle the intricacies of bunch motion, an independent component analysis has been employed. This method efficiently segregates the bunch motion into discrete sources. The resulting bunch motion is a direct outcome of the linear combination of these distinct sources. Consequently, this approach significantly simplifies the overarching data analysis procedure. Throughout the injection phase, the predominant factors influencing the oscillation of filled bunches originate from three distinct sources. Firstly, there is a contribution arising from the mismatch among the four kickers during their activation period. Additionally, the damped betatron oscillation and the oscillation generated by wake fields constitute the other sources of bunch motion. To comprehend the tune variation in these sources, an examination is conducted through a numerical analysis of fundamental frequencies. Specifically, the tune associated with the betatron oscillation is contingent upon the amplitude of said oscillation. In contrast, the tune corresponding to the wake-field oscillation displays comparably minor fluctuations during both the growing and damping phases.

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Commissioning of the Taiwan Photon Source

Cited by 17 publications

References 0 publications

Design and implementation of a temperature-compensated corrector magnet power supply for the Taiwan Photon Source

Design and implementation of a temperature-compensated corrector magnet power supply for the Taiwan Photon Source

Development of DSP-based TPS fully digital correction magnet power supply

Online bunch-by-bunch position monitoring and analysis at the Taiwan Photon Source

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