Theoretical study of a dual harmonic system and its application to the CSNS/RCS

YUAN Yao-Shuo; WANG Na; XU Shou-Yan; YUAN Yue; WANG Sheng

doi:10.1088/1674-1137/39/12/127002

Chinese Physics C> 2015, Vol. 39> Issue(12) : 127002 DOI: 10.1088/1674-1137/39/12/127002

Theoretical study of a dual harmonic system and its application to the CSNS/RCS

1.
Dongguan Branch, Institute of High Energy Physics, Chinese Academy of Sciences, Dongguan 523803, China

Abstract
HTML
Reference
Related

PDF

Abstract：
Dual harmonic systems have been widely used in high intensity proton synchrotrons to suppress the space charge effect, as well as reduce the beam loss. To investigate the longitudinal beam dynamics in a dual rf system, the potential well, the sub-buckets in the bunch and the multi-solutions of the phase equation are studied theoretically in this paper. Based on these theoretical studies, optimization of bunching factor and rf voltage waveform are made for the dual harmonic rf system in the upgrade phase of the China Spallation Neutron Source Rapid Cycling Synchrotron (CSNS/RCS). In the optimization process, the simulation with space charge effect is done using a newly developed code, C-SCSIM.
- dual harmonic rf system ,
- longitudinal beam simulation ,
- rf voltage waveform ,
- bunching factor

References

[1]	Laslett L J. Proc. 1963 Summer Sch. BNL, 1963. 324-326
[2]	Baillod J M, Magnani L, Nassibian G et al. IEEE Trans. Nucl. Sci., 1983, 729: 3499-3501
[3]	Brennan J M, Roser T. Proc. of PAC1999. New York, 1999. 614-616
[4]	Middendorf M E, Brumwell F R, Dooling J C et al. Proc. of PAC2007. Albuquerque, New Mexico, 2007. 2233-2235
[5]	Yamamoto M et al. Nucl. Instrum. Methods A, 2010, 621: 15-32
[6]	CSNS Project Team. China Spallation Neutron Source Feasibility Reaearch Report. Institute of High Energy Physics and Institute of Physics, Chinese Academy of Sciences, 2009 (in Chinese)
[7]	WEI J et al. Chin. Phys. C, 2009, 33: 1033-1042
[8]	YUAN Y S et al. Nucl. Instrum Methods A, 2013, 729: 864-869
[9]	Lee S Y. Accelerator Physics, Singapore. World Scientific, 2004. 327-334
[10]	CHEN J F et al. Chinese Physics C, 2010, 34: 1643-1648

[1]	Xiao-Ni Li , Wei-Qiang Wen , Heng Du , Peng Li , Xiao-Hu Zhang , Xue-Jing Hu , Guo-Feng Qu , Zhong-Shan Li , Wen-Wen Ge , Jie Li , Han-Bing Wang , Jia-Wen Xia , Jian-Cheng Yang , Xin-Wen Ma , You-Jin Yuan . Simulation of longitudinal dynamics of laser-cooled and RF-bunched C³⁺ ion beams at heavy ion storage ring CSRe. Chinese Physics C, 2017, 41(7): 077003. doi: 10.1088/1674-1137/41/7/077003
[2]	Sharifi Asadi Malafeh , M. Ghergherehchi , H. Afarideh , J. S. Chai , Yoon Sang Kim . Intelligent low-level RF system by non-destructive beam monitoring device for cyclotrons. Chinese Physics C, 2016, 40(4): 047001. doi: 10.1088/1674-1137/40/4/047001
[3]	Rui-Xuan Huang , Chad Mitchell , Qi-Ka Jia , Christos Papadopoulos , Fernando Sannibale . Simulation study on the emittance compensation of off-axis emitted beam in RF photoinjector. Chinese Physics C, 2016, 40(11): 117004. doi: 10.1088/1674-1137/40/11/117004
[4]	DING Yun-Ze , DU Ying-Chao , ZHANG Zhen , HUANG Wen-Hui . Simulation study of a photo-injector for brightness improvement in Thomson scattering X-ray source via ballistic bunching. Chinese Physics C, 2014, 38(2): 027003. doi: 10.1088/1674-1137/38/2/027003
[5]	GENG Hui-Ping , GUO Zhen . Uncoupled achromatic condition of a dog-leg system with the presence of RF cavities. Chinese Physics C, 2014, 38(6): 067001. doi: 10.1088/1674-1137/38/6/067001
[6]	CHEN Ze , HU Zheng-Guo , CHEN Jin-Da , ZHANG Xiu-Ling , GUO Zhong-Yan , XIAO Guo-Qing , SUN Zhi-Yu , HUANG Wen-Xue , WANG Jian-Song . A simulation study of a dual-plate in-room PET system for dose verification in carbon ion therapy. Chinese Physics C, 2014, 38(8): 088202. doi: 10.1088/1674-1137/38/8/088202
[7]	HU Tong-Ning , PEI Yuan-Ji , QIN Bin , CHEN Qu-Shan . Beam tail effect of a performance-enhanced EC-ITC RF gun. Chinese Physics C, 2013, 37(12): 128101. doi: 10.1088/1674-1137/37/12/128101
[8]	PEI Shi-Lun , XIAO Ou-Zheng . Studies on an S-band bunching system with hybrid buncher. Chinese Physics C, 2013, 37(11): 117001. doi: 10.1088/1674-1137/37/11/117001
[9]	ZHAO Yu-Ning , LI Wei-Min , WU Cong-Feng , WANG Lin . Analytic modeling of instabilities driven by higher-order modes in the HLS Ⅱ RF system with a higher-harmonic cavity. Chinese Physics C, 2013, 37(8): 087005. doi: 10.1088/1674-1137/37/8/087005
[10]	LU Chang-Wang , LIU Jian-Fei , HOU Hong-Tao , MA Zhen-Yu , MAO Dong-Qing , FENG Zi-Qiang , ZHAO Shen-Jie , LUO Chen , ZHAO Yu-Bin , ZHANG Zhi-Gang , ZHENG Xiang , WEI Ye-Long , YU Hai-Bo , LI Zheng , XU Kai . Design and simulation of a new type of 500 MHz single-cell superconducting RF cavity. Chinese Physics C, 2012, 36(5): 447-451. doi: 10.1088/1674-1137/36/5/012
[11]	ZHOU Quan-Feng , ZHU-Kun , LU Yuan-Rong , GAO Shu-Li , KANG Ming-Lei , YAN Xue-Qing , GUO Zhi-Yu , CHEN Jia-Er . Simulation and experiments of rf tuning of a 201.5 MHz four-rod RFQ cavity. Chinese Physics C, 2011, 35(11): 1042-1046. doi: 10.1088/1674-1137/35/11/012
[12]	B. A. Soliman , M. M. Abdelrahman , A. G. Helal , F. W. Abdelsalam . Simulation of ion beam extraction and focusing system. Chinese Physics C, 2011, 35(1): 83-87. doi: 10.1088/1674-1137/35/1/017
[13]	CHEN Jin-Fang , TANG Jing-Yu . Studies of dual-harmonic acceleration at CSNS-Ⅱ. Chinese Physics C, 2010, 34(10): 1643-1648. doi: 10.1088/1674-1137/34/10/018
[14]	NIE Yuan-Cun , LU Yuan-Rong , CHEN Jia-Er , YAN Xue-Qing , GUO Zhi-Yu , ZHU Kun , FANG Jia-Xun . Beam dynamics and RF design of trapezoidal IH-RFQ with low energy spread. Chinese Physics C, 2009, 33(S2): 105-108. doi: 10.1088/1674-1137/33/S2/027
[15]	XU Zhe , ZHAO Hong-Wei , WANG Chun-Xiao , XIA Jia-Wen , ZHAN Wen-Long , BIAN Zhi-Bin . RF system design and measurement of HIRF-CSRe. Chinese Physics C, 2009, 33(5): 387-392. doi: 10.1088/1674-1137/33/5/014
[16]	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
[17]	HOU Mi , PEI Guo-Xi , . Modeling of the RF System for the Normal Conducting Linac. Chinese Physics C, 2008, 32(1): 56-59. doi: 10.1088/1674-1137/32/1/013
[18]	YIN Cheng-Ke , DAI Zhi-Min , LIU Jian-Fei , ZHAO Yu-Bin , ZHANG Tong-Xuan , FU Ze-Chuan , LIU Wei-Qing . A non-IQ sampling controller in low level RF system. Chinese Physics C, 2008, 32(10): 852-856. doi: 10.1088/1674-1137/32/10/018
[19]	CHU Jian-Hua , TONG De-Chun , ZHAO Zhen-Tang . RF measurements of a C-band cavity beam position monitor. Chinese Physics C, 2008, 32(5): 385-388. doi: 10.1088/1674-1137/32/5/012
[20]	AN Shi-Zhong , Klaus Bongardt , Rudolf Maier , TANG Jing-Yu , ZHANG Tian-Jue . Collective effects for long bunches in dual harmonic RF systems. Chinese Physics C, 2008, 32(2): 139-145. doi: 10.1088/1674-1137/32/2/013

Access

Get Citation

YUAN Yao-Shuo, WANG Na, XU Shou-Yan, YUAN Yue and WANG Sheng. Theoretical study of a dual harmonic system and its application to the CSNS/RCS[J]. Chinese Physics C, 2015, 39(12): 127002. doi: 10.1088/1674-1137/39/12/127002

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2015-03-31
Revised: 2015-05-21

Fund

Supported by National Natural Science Foundation of China (11175193)

Article Metric

Article Views(1505)
PDF Downloads(46)
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, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Theoretical study of a dual harmonic system and its application to the CSNS/RCS

Corresponding author: WANG Sheng,

1. Dongguan Branch, Institute of High Energy Physics, Chinese Academy of Sciences, Dongguan 523803, China

Received Date: 2015-03-31

Accepted Date: 2015-05-21

Available Online: 2015-12-20

Fund Project: Supported by National Natural Science Foundation of China (11175193)

Abstract: Dual harmonic systems have been widely used in high intensity proton synchrotrons to suppress the space charge effect, as well as reduce the beam loss. To investigate the longitudinal beam dynamics in a dual rf system, the potential well, the sub-buckets in the bunch and the multi-solutions of the phase equation are studied theoretically in this paper. Based on these theoretical studies, optimization of bunching factor and rf voltage waveform are made for the dual harmonic rf system in the upgrade phase of the China Spallation Neutron Source Rapid Cycling Synchrotron (CSNS/RCS). In the optimization process, the simulation with space charge effect is done using a newly developed code, C-SCSIM.

HTML

Reference (10)

Theoretical study of a dual harmonic system and its application to the CSNS/RCS

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article