| Paper |
Title |
Page |
| THPP123 |
Ramping Power Supplies for the SSRF Booster
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3646 |
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- R. Li, H. G. Chen, D. M. Li, S. L. Lu, T. J. Shen, D. X. Wang
SINAP, Shanghai
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The SSRF booster magnetic field ramped with a 250ms ramp, 2Hz cycle rate, and biased quasi-sinusoidal wave shape is successfully realized. Two Digital Switch-mode Power Supplies (DSPS) separately deliver currents to all dipoles, and other four DSPS deliver to the quadrupoles and sextupoles in families. Tracking precision and reducing line power fluctuation requirements are particularly challenging because of the fast ramp and high inductance load. In order to meet the requirements, the magnetic energy recycle, digital regulation and novel PID correction circuit are used. On Oct. 5th 2007, after a few days commissioning of the SSRF booster, the beam was boosted up to 3.5GeV firstly in SSRF, it proved that the design of ramping power supplies was correct and the manufacture was successful. The power supply system and its performance are described in this paper.
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| THPP130 |
SSRF Magnet Power Supply System
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3667 |
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- T. J. Shen, H. G. Chen, C. L. Guo, Z. M. Hu, M. M. Huang, D. M. Li, R. Li, H. Liu, S. L. Lu, D. X. Wang, W. F. Wu, R. N. Xu, S. M. Zhu, Y. Y. Zhu
SINAP, Shanghai
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The Shanghai Synchrotron Radiation Facility (SSRF) is a third-generation synchrotron radiation light source. In SSRF, there are 520 sets of magnet power supplies for the storage ring and 163 sets for injector. All of the power supplies are in PWM switched mode with IGBT. A high precision stable output power supply for 40 dipoles rated at 840A/800V with the stability of ±2·10-5/8hrs is used for the storage ring. 200 sets of chopper type power supplies are used for exciting main winding of quadrupoles independently. In the booster, two sets of dynamic power supplies for dipoles and two sets for quadrupoles run at the biased 2Hz quasi-sinusoidal wave. All above power supplies work with digital power supply controllers designed by either PSI or SINAP. All power supplies are manufactured at professional power supply companies in China.
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