Design and performance of the LLRF system for CSNS/RCS

LI Xiao; SUN Hong; LONG Wei; ZHAO Fa-Cheng; ZHANG Chun-Lin

doi:10.1088/1674-1137/39/2/027002

Chinese Physics C> 2015, Vol. 39> Issue(2) : 027002 DOI: 10.1088/1674-1137/39/2/027002

Design and performance of the LLRF system for CSNS/RCS

Abstract
HTML
Reference
Related

PDF

Abstract：
The rapid cycling synchrotron (RCS) is part of the China Spallation Neutron Source (CSNS). The RCS provides 1.6 GeV protons with a repetition rate of 25 Hz. The RF system in RCS is mainly composed of a ferrite loaded RF cavity, a high power tetrode amplifier, a bias supply of 3300 A and a digital low level RF (LLRF) system based on FPGA. The major challenge of the LLRF system is to solve problems caused by rapid frequency sweeping and the heavy beam loading effect. A total of eight control loops are applied to ensure the normal operation. An effective feedforward scheme is widely used to improve the dynamic performance of the system. The design of the LLRF system and high power integration test results with the prototype RF system are presented.

References

[1]

WANG Sheng et al. Chin. Phys. C, 2009, 33(Suppl. II): 1-3[2] WEI J et al. Nucl. Instrum. Methods A, 2009, 600: 10-13[3] SUN Hong et al. IPAC, 2013. 2765-2767[4] LI Xiao et al. IPAC, 2013. 2977-2979[5] LI Xiao. Study on the Digital Low Level RF Control System of CSNS/RCS (PhD Thesis). Beijing: Graduate University of Chinese Academy of Sciences, 2010 (in Chinese)[6] Tamura F et al. PAC, 2005. 3624-3626[7] LI Xiao et al. High Power Laser and Particle Beams, 2013, 25(10): 2671-2674 (in Chinese)

[1]	De-Liang Zhang , Ping Cao , Qi Wang , Bing He , Ya-Xi Zhang , Xin-Cheng Qi , Tao Yu , Qi An . System design for precise digitization and readout of the CSNS-WNS BaF₂ spectrometer. Chinese Physics C, 2017, 41(2): 026102. doi: 10.1088/1674-1137/41/2/026102
[2]	Ran Xiao , Yan-Fen Liu , Wen-Zhen Xu , Xiao-Jie Ni , Zi-Wen Pan , Bang-Jiao Ye . A new muon-pion collection and transport system design using superconducting solenoids based on CSNS. Chinese Physics C, 2016, 40(5): 057004. doi: 10.1088/1674-1137/40/5/057004
[3]	Hong-Fei Ji , Yi Jiao , Ming-Yang Huang , Shou-Yan Xu , Na Wang , Sheng Wang . Optimization of the collimation system for CSNS/RCS with the robust conjugate direction search algorithm. Chinese Physics C, 2016, 40(9): 097006. doi: 10.1088/1674-1137/40/9/097006
[4]	YUAN Yao-Shuo , LI Kai-Wei , WANG Na , Yoshiro Irie , WANG Sheng . Study of the beam loading effect in the CSNS/RCS. Chinese Physics C, 2015, 39(4): 047003. doi: 10.1088/1674-1137/39/4/047003
[5]	YUAN Yao-Shuo , WANG Na , XU Shou-Yan , YUAN Yue , WANG Sheng . Theoretical study of a dual harmonic system and its application to the CSNS/RCS. Chinese Physics C, 2015, 39(12): 127002. doi: 10.1088/1674-1137/39/12/127002
[6]	XU Shou-Yan , WANG Sheng , AN Yu-Wen , LI Zhi-Ping . Study on the effects of chromaticity and magnetic field tracking errors at CSNS/RCS. Chinese Physics C, 2014, 38(11): 117003. doi: 10.1088/1674-1137/38/11/117003
[7]	LIU Ren-Hong , QU Hua-Min , ZHANG Jun-Song , KANG Ling , WANG Mo-Tuo , WANG Guang-Yuan , WANG Hai-Jing . Study of the dynamic characteristics of the AC dipole-girder system for CSNS/RCS. Chinese Physics C, 2014, 38(7): 077003. doi: 10.1088/1674-1137/38/7/077003
[8]	LIU Ren-Hong , ZHANG Jun-Song , QU Hua-Min , KANG Ling , WANG Mo-Tuo , WANG Guang-Yuan , WANG Hai-Jing . Vibration research of the AC dipole-girder system for CSNS/RCS. Chinese Physics C, 2014, 38(6): 067005. doi: 10.1088/1674-1137/38/6/067005
[9]	WEN Liang-Hua , WANG Xian-Wu , HE Yuan , CHANG Wei , ZHANG Rui-Feng , ZHANG Sheng-Hu , ZHU Zheng-Long , LI Chun-Long , SHI Long-Bo , ZHANG Rui . R&D of an LLRF control system for a 162.5 MHz radio frequency system. Chinese Physics C, 2013, 37(8): 087004. doi: 10.1088/1674-1137/37/8/087004
[10]	LU Yan-Hua , LI Gang , OUYANG Hua-Fu . Design and development of the CSNS ion source control system. Chinese Physics C, 2013, 37(7): 077004. doi: 10.1088/1674-1137/37/7/077004
[11]	ZOU Yi-Qing , WANG Na , KANG Ling , QU Hua-Min , HE Zhe-Xi , YU Jie-Bing . Thermal analysis and cooling structure design of the primary collimator in CSNS/RCS. Chinese Physics C, 2013, 37(5): 057004. doi: 10.1088/1674-1137/37/5/057004
[12]	LIU Ren-Hong , QU Hua-Min , KANG Ling , ZHANG Jun-Song , WANG Hai-Jing . Modal analysis of AC quadrupole magnet system for CSNS/RCS. Chinese Physics C, 2013, 37(8): 087002. doi: 10.1088/1674-1137/37/8/087002
[13]	YANG Xiao-Yu , XU Tao-Guang , FU Shi-Nian , LIU Yu-Dong , LI Yong , ZHAO Ya-Liang . Design of a stripline kicker for tune measurementin CSNS RCS. Chinese Physics C, 2012, 36(7): 666-669. doi: 10.1088/1674-1137/36/7/017
[14]	XU Shou-Yan , WANG Sheng . Study on space charge effects of the CSNS/RCS. Chinese Physics C, 2011, 35(12): 1152-1158. doi: 10.1088/1674-1137/35/12/014
[15]	WEI Tao , WU Qing-Biao , LI Wen-Qian . Beam collimation for CSNS/RCS. Chinese Physics C, 2010, 34(4): 506-511. doi: 10.1088/1674-1137/34/4/018
[16]	XU Mei-Hang , TIAN Jian-Min , CHEN Chang , CHEN Yuan-Bo , XU Tao-Guang , LU Shuang-Tong . Design and construction of the first prototype ionization chamber for CSNS and PA beam loss monitor (BLM) system. Chinese Physics C, 2009, 33(2): 123-126. doi: 10.1088/1674-1137/33/2/010
[17]	LIU Lin , TANG Jing-Yu , QIU Jing , WEI Tao . Longitudinal RF capture and acceleration simulation in CSNS RCS. Chinese Physics C, 2009, 33(S2): 4-7. doi: 10.1088/1674-1137/33/S2/002
[18]	SHEN Li , CHI Yun-Long , HUANG Chuan , TANG Jing-Yu . Design of Injection Painting Bumper Magnets Pulse Power Supply for CSNS/RCS. Chinese Physics C, 2008, 32(S1): 22-24.
[19]	ZHAO Yu-Bin , YIN Cheng-Ke , ZHANG Tong-Xuan , FU Ze-Chuan , ZHAO Zhen-Tang , DAI Zhi-Min , LIU Jian-Fei , WANG Fang . Digital prototype of LLRF system for SSRF. Chinese Physics C, 2008, 32(9): 758-760. doi: 10.1088/1674-1137/32/9/015
[20]	WEI Tao , FU Shi-Nian , QIN Qing , TANG Jing-Yu . RF trapping and acceleration in CSNS/RCS. Chinese Physics C, 2008, 32(6): 437-441. doi: 10.1088/1674-1137/32/6/005

Access

Get Citation

LI Xiao, SUN Hong, LONG Wei, ZHAO Fa-Cheng and ZHANG Chun-Lin. Design and performance of the LLRF system for CSNS/RCS[J]. Chinese Physics C, 2015, 39(2): 027002. doi: 10.1088/1674-1137/39/2/027002

LI Xiao, SUN Hong, LONG Wei, ZHAO Fa-Cheng and ZHANG Chun-Lin. Design and performance of the LLRF system for CSNS/RCS[J]. Chinese Physics C, 2015, 39(2): 027002. doi: 10.1088/1674-1137/39/2/027002 shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2014-04-09
Revised: 1900-01-01

Article Metric

Article Views(2119)
PDF Downloads(212)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, [email protected]

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Design and performance of the LLRF system for CSNS/RCS

Corresponding author: LI Xiao,

Received Date: 2014-04-09

Accepted Date: 1900-01-01

Available Online: 2015-02-05

Abstract: The rapid cycling synchrotron (RCS) is part of the China Spallation Neutron Source (CSNS). The RCS provides 1.6 GeV protons with a repetition rate of 25 Hz. The RF system in RCS is mainly composed of a ferrite loaded RF cavity, a high power tetrode amplifier, a bias supply of 3300 A and a digital low level RF (LLRF) system based on FPGA. The major challenge of the LLRF system is to solve problems caused by rapid frequency sweeping and the heavy beam loading effect. A total of eight control loops are applied to ensure the normal operation. An effective feedforward scheme is widely used to improve the dynamic performance of the system. The design of the LLRF system and high power integration test results with the prototype RF system are presented.

HTML

Reference (1)

Design and performance of the LLRF system for CSNS/RCS

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, [email protected]

Email This Article