CAS OpenIR  > 中科院上海应用物理研究所2011-2019年
Digital LLRF controller for SSRF booster RF system upgrade
Zhang, ZG; Zhao, YB; Xu, K; Zheng, X; Li, Z; Zhao, SJ; Chang, Q; Hou, HT; Ma, ZY; Luo, C; Mao, DQ; Shi, J; Wang, Y; Liu, JF; Liu, JF (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
2015
Source PublicationNUCLEAR SCIENCE AND TECHNIQUES
ISSN1001-8042
Volume26Issue:3Pages:
Subtype期刊文献
AbstractThe low level radio frequency (LLRF) system for booster accelerator at Shanghai Synchrotron Radiation Facility (SSRF) was upgraded by a digital controller based on field programmable gate array (FPGA) technology. Parameters of voltage, frequency and field flatness in the two 5-cell cavities are controlled to meet the requirements of booster. In this article, the ramping curve of cavity voltage, amplitude and phase control loop with vector sum of the two 5-cell cavities, tuning loop and field flatness loop are analyzed and discussed in detail. A different method in tuning loop is adopted due to the limitations of ADC channels. The function realizes energy ramping of electron beam from 150 MeV to 3.5 GeV with a repetition rate of 2 Hz. With the new LLRF controller, the phase stability at ramping mode in 10 hours long operation is improved from +/- 1.5 degrees (RMS) with open loop to +/- 0.15 degrees (RMS) with close loop, while the detuning phase and field flatness are maintained to within +/- 2 degrees and +/- 1%, respectively.
Indexed BySCI
Language英语
WOS IDWOS:000358109700006
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/24900
Collection中科院上海应用物理研究所2011-2019年
Corresponding AuthorLiu, JF (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
Recommended Citation
GB/T 7714
Zhang, ZG,Zhao, YB,Xu, K,et al. Digital LLRF controller for SSRF booster RF system upgrade[J]. NUCLEAR SCIENCE AND TECHNIQUES,2015,26(3):—.
APA Zhang, ZG.,Zhao, YB.,Xu, K.,Zheng, X.,Li, Z.,...&Liu, JF .(2015).Digital LLRF controller for SSRF booster RF system upgrade.NUCLEAR SCIENCE AND TECHNIQUES,26(3),—.
MLA Zhang, ZG,et al."Digital LLRF controller for SSRF booster RF system upgrade".NUCLEAR SCIENCE AND TECHNIQUES 26.3(2015):—.
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