【作者】 刘金鑫； 赵雷； 占林松； 闫柳江； 刘树彬； 安琪；

【Author】 Jinxin Liu;Lei Zhao;Linsong Zhan;Liujiang Yan;Shubin Liu;Qi An;State Key Laboratory of Particle Detection and Electronics,USTC;

【机构】 核探测与核电子学国家重点实验室中国科学技术大学；

【摘要】 上海光源(Shanghai Synchrotron Radiation Facility, SSRF)是具有3.5 GeV高能量的第三代同步辐射光源。在光源正常工作时,多束团不稳定性将会限制其性能。为了抑制多束团不稳定性的影响,需要建立一套逐束团横向反馈系统。我们设计了反馈系统中最为重要的部分——逐束团横向反馈处理器,并且在实验室中进行了测试。测试结果表明在250 MHz工作带宽内横向反馈处理器的有效位(Effective Number of Bits, ENOB)好于10 bits,在关键工作频率点抑制必好于40 dB。更多还原

【Abstract】 Shanghai Synchrotron Radiation Facility(SSRF) is a 3.5 GeV, 300 mA, third generation synchrotron light source. When it works, multi-beam instability limits its performance. To solve this problem, it is necessary to establish a feedback system. We have designed and tested the feedback processor, which is the essential part of this feedback system. Test results indicate that the ENOB(Effective Number of Bits) of the analog-to-digital conversion circuit is better than 10 bits in the input signal frequency below 250 MHz, and the closed loop attenuation at the critical frequency points is better than 40 dB.更多还原