Overview of special power supplies for advanced synchrotron radiation source
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摘要: 介绍了第四代衍射极限同步辐射光源(DLSR)的发展,DLSR目前处于起步阶段,涉及到很多关键技术。主要讨论了DLSR涉及到的特种电源技术,主要包括注入引出用高压纳秒快脉冲电源、高精度磁铁电源、双极性动态校正电源、大功率速调管调制器等,分别介绍了这些电源的参数要求、关键技术及解决方案。
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关键词:
- 衍射极限同步辐射光源 /
- 纳秒快脉冲电源 /
- 磁铁电源 /
- 速调管调制器
Abstract: The development of the fourth generation diffraction-limited synchrotron radiation source (DLSR) is introduced. Many key technologies are involved in the initial stage. This paper mainly discusses the special power supply technologies involved in DLSR, including high-voltage nanosecond fast pulsed power for injection and extraction system, high-precision magnet power supply, bipolar dynamic corrector power supply, high-power klystron modulator, etc. The parameter requirements, key techniques and solutions of these power supplies are introduced respectively. -
表 1 DLSR注入和第三代光源注入的比较
Table 1. Comparison of injection scheme between the third generation SR and the DLSR
dynamic aperture injection scheme kicker type kicker power the third generation SR source >10 mm off-axis bump orbit injection ferrite kicker micro-second pulsed power DLSR source 2~3 mm on-axis swap- out injection strip-line kicker nano-second bipolar pulsed power 表 2 几种DLSR注入脉冲电源技术指标
Table 2. Specifications of some fast pulsed powers for DLSR injection
light source and injection method beam energy/GeV deflection angle/mrad kicker length/m voltage/kV rise time/ns fall time/ns flattop/ns APS-U swap-out 6.0 2.88 4×0.72 ±20.0 4.5 4.5 5.9 ALS-U swap-out 2.0 3.50 2.0 ±5.3 < 10.0 < 10.0 50.0 HALS longitudinal injection 2.4 3.50 1.5 ±10.0 < 1.0 < 2.0 1.5 表 3 APS-U磁铁电源数量及指标
Table 3. Quantity and specifications of APS-U power supplies
quantity output current/A power/kW stability/10-6 reproducibility/10-6 small signal band width/kHz unipolar stand-alone 2 245/414 416/584 10 10 / unipolar DC-DC 1000 280 9.8 10 10 / bipolar slow 921 ±15 0.6 100 100 / bipolar fast 160 ±15 0.6 100 100 10 表 4 同步辐射光源常用的速调管调制器技术指标
Table 4. Specifications of typical klystron modulators for SR light source
klystron RF power/MW beam voltage/kV beam current/A transformer ratio charging voltage/kV thyratron current/kA flat-top/μs jitter/ns repetition rate/Hz repeat-ability/% E3730A 50 325 400 1:15 47 6 2 ±5 0~10 ±0.1 E3712 80 400 480 1:18 47 9 2 ±5 0~10 ±0.1 -
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