基于嵌入式EPICS的合肥光源储存环束流损失监测系统
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摘要
针对合肥光源储存环恒流运行(Top-off)改造等性能提升的需要,研制了新型的基于嵌入式EPICS架构的储存环束流损失监测(BLM)系统,用于监测储存环中束流损失发生的位置和大小。新BLM处理器获取储存环各处双PIN型光电二极管传感器所采集的簇射电子的信号,分析处理后通过各个处理器内部的嵌入式系统所运行的EPICS程序将数据实时发布到加速器控制网络,使中控室能够实时获取束损的数据。新BLM系统能够实时对双PIN型传感器进行自检操作,排查故障隐患,提高了系统运行的效率和可靠性,经过试运行表明,新BLM系统可完全满足合肥光源恒流的运行需要。
A new beam loss monitor system based on embedded EPICS is developed for the top-off upgrade of HLS-Ⅱ,to monitor the position and value of beam loss of storage ring.The electron shower signals are obtained by the double PIN photodiode detectors around the storage ring,then acquired by the new BLM processors,where the beam loss signals are analysed and distributed to the accelerator control network,by embedded EPICS on embedded Linux system of the BLM processors,and the beam loss data could be obtained in the central control room.The new BLM system could actuate the self-checking function of the double PIN photodiode detectors,eliminate hidden malfunction of the detectors,and improve stability and reliability of the whole system.Preliminary operation shows that the new BLM system can meet the needs of the top-off upgrade of HLS-Ⅱ.
A new beam loss monitor system based on embedded EPICS is developed for the top-off upgrade of HLS-Ⅱ,to monitor the position and value of beam loss of storage ring.The electron shower signals are obtained by the double PIN photodiode detectors around the storage ring,then acquired by the new BLM processors,where the beam loss signals are analysed and distributed to the accelerator control network,by embedded EPICS on embedded Linux system of the BLM processors,and the beam loss data could be obtained in the central control room.The new BLM system could actuate the self-checking function of the double PIN photodiode detectors,eliminate hidden malfunction of the detectors,and improve stability and reliability of the whole system.Preliminary operation shows that the new BLM system can meet the needs of the top-off upgrade of HLS-Ⅱ.
引文
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[2]王远远.HLSⅡ新注入系统分析与调试[D].合肥:中国科学技术大学,2015.(Wang Yuanyuan.Analysis and commissioning of HLSⅡnew injection system.Hefei:University of Science and Technology of China,2015)
[3] Shang Fenglei,Wang Yuanyuan,Shang Lei,et al.Commissioning and research of HLS injection system under top-off mode[J].Atomic Energy Science and Technology,2015,49:648-651.
[4]孙玉聪.电子储存环束流损失测量系统的研制[D].合肥:中国科学技术大学,2011.(Sun Yucong.The study on measurement system of loss beam on electron storage ring.Anhui:University of Science and Technology of China,2011)
[5]刘乃泉,林郁正,刘志国,等.加速器理论[M].北京:清华大学出版社,2004:153-168.(Liu Naiquan,Lin Yuzheng,Liu Zhiguo,et al.Accelerator theory.Beijing:Tsinghua University Press,2004:153-168)
[6] Jiang Bocheng,Zhao Zhentang,Liu Guimin.Study of Touschek lifetime in SSRF storage ring[J].High Energy Physics and Nuclear Physics,2006(7):693-698.
[7]赵晓岩,曹建社,汪林,等.BEPCⅡ束流损失探测系统及其初步应用[J].中国物理C,2008:80-82.(Zhao Xiaoyan,Cao Jianshe,Wang Lin,et al.Beam loss monitoring system of BEPCⅡand its first application.Chinese Physics C,2008:80-82)
[8]侯磊.上海光源储存环束流损失监测系统研制与应用[D].北京:清华大学,2009.(Hou Lei.Design and application of the beam loss monitoring system for the storage ring of SSRF.Beijing:Tsinghua University,2009)
[9] Yoon P S,Siddons D P.Photodiode-based X-ray beam-position monitor with high spatial-resolution for the NSLS-II beamlines[C]//DIPAC9th European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators.2009:315-317.
[10]陈裕凯.合肥光源(HLS II)储存环束流损失监测系统的研究[D].合肥:中国科学技术大学,2015.(Cheng Yukai.Data acquisition system for beam loss monitoring of HLS storage ring at NSRL.Hefei:University of Science and Technology of China,2015)
[11]刘功发,李京袆,李为民,等.合肥光源储存环控制系统[J].核技术,2004(7):501-505.(Liu Gongfa,Li Jingyi,Li Weiming,et al.HLS storage ring control system.Nuclear Techniques,2004(7):501-505)