Studies of dual-harmonic acceleration at CSNS-Ⅱ

CHEN Jin-Fang; TANG Jing-Yu

doi:10.1088/1674-1137/34/10/018

Chinese Physics C> 2010, Vol. 34> Issue(10) : 1643-1648 DOI: 10.1088/1674-1137/34/10/018

Studies of dual-harmonic acceleration at CSNS-Ⅱ

CHEN Jin-Fang ^, ,
TANG Jing-Yu

Abstract
HTML
Reference
Related

PDF

Abstract：
The Rapid Cycling Synchrotron (RCS) of the China Spallation Neutron Source (CSNS) complex is designed to provide 1.56×10¹³ protons per pulse (ppp) during the initial stage, and it is upgradeable to 3.12×10¹³ ppp during the second stage and 6.24×10¹³ ppp during the ultimate stage. The high beam intensity in the RCS requires alleviation of space charge effects to reduce beam losses, which is key in such high beam power accelerators. With higher intensities in the upgrading phases, a dual-harmonic RF system is planned to produce flat-topped bunches that are useful to reduce the space charge effects. We have studied different schemes to apply the dual-harmonic acceleration in CSNS-Ⅱ, and have calculated the main parameters of the RF systems, which are presented in this paper.

References

[1]

WEI J,CHEN H S,CHEN Y W et al.Nucl.Instrum.Methods Phys.Res.A,2009,600:10-13[2] CSNS Accelerator Team.Conceptual Design on Chinese Spallation Neutron Source-Accelerators,2004.IHEPCSNS-Report/2004-01E(in Chinese)[3] Baillod J M,Magnani L,Nassibian G et al.IEEE Trans.Nucl.Sci.,1983,30:3499-3501[4] Brennan J M,Roser T.Proc.of PAC1999.New York,1999.614-616[5] Middendorf M E,Brumwell F R,Dooling J C et al.Proc.of PAC2007.Albuquerque,New Mexico,2007.2233-2235[6] Seville A,Gardner I,Thomseon J et al.Proc.of EPAC2008.Genoa,2008.349-351[7] Tamura F,Yamamoto M,Yoshii M et al.Phys.Rev.ST Accel.Beams,2009,12:041001-041009[8] Prior C.Studies of Dual Harmonic Acceleration in ISIS.ICANS Ⅻ,RAL Report 94025,1994.A11[9] QIU J,TANG J Y,WANG S et al.HEP NP,2007,31(10):942-946(in Chinese)[10] Hofmann A,Pedersen F.IEEE Trans.Nucl.Sci.,1979,26:3526-3528[11] Lee S Y.Accelerator Physics.Singapore:World Scientific Publishing Co.Pte.Ltd.,1999.229-230[12] Laslett L J.On Intensity Limitations Imposed by Transverse Space-Charge Effects in Circular Particle Accelerators.Proc.1963 Summer Sch.BNL,1963.324-326[13] Duke J P,Rees G H,Trotman J V et al.Dual Harmonic Acceleration.ESS 94-12-R,August 1994

[1]	Zhe Chang , Hai-Nan Lin , Zhi-Chao Zhao , Yong Zhou . Searching for a possible dipole anisotropy in acceleration scale with 147 rotationally supported galaxies. Chinese Physics C, 2018, 42(11): 115103. doi: 10.1088/1674-1137/42/11/115103
[2]	Liang Lu , Toshiyuki Hattori , Huan-Yu Zhao , Katsunori Kawasaki , Lie-Peng Sun , Qian-Yu Jin , Jun-Jie Zhang , Liang-Ting Sun , Yuan He , Hong-Wei Zhao . RETRACTED: High power acceleration of an HSC type injector for cancer therapy. Chinese Physics C, 2016, 40(7): 077001. doi: 10.1088/1674-1137/40/7/077001
[3]	Hua-Jie Han , Sheng-Hao Wang , Kun Gao , Zhi-Li Wang , Can Zhang , Meng Yang , Kai Zhang , Pei-Ping Zhu . Preliminary research on dual-energy X-ray phase-contrast imaging. Chinese Physics C, 2016, 40(4): 048201. doi: 10.1088/1674-1137/40/4/048201
[4]	LI Xiao , SUN Hong , LONG Wei , ZHAO Fa-Cheng , ZHANG Chun-Lin . Design and performance of the LLRF system for CSNS/RCS. Chinese Physics C, 2015, 39(2): 027002. doi: 10.1088/1674-1137/39/2/027002
[5]	WU Qing , ZHOU Li-Juan , XIANG Qian-Fei , MA Wei-Xing . Multiquark cluster form factors in the relativistic harmonic oscillator model. Chinese Physics C, 2015, 39(1): 013102. doi: 10.1088/1674-1137/39/1/013102
[6]	HUANG Rui-Xuan , HE Zhi-Gang , LI Wei-Wei , JIA Qi-Ka . Velocity bunching in travelling wave accelerator with low acceleration gradient. Chinese Physics C, 2014, 38(5): 057004. doi: 10.1088/1674-1137/38/5/057004
[7]	WANG Shao-Heng , DENG Jian-Jun . Acceleration modules in linear induction accelerators. Chinese Physics C, 2014, 38(5): 057005. doi: 10.1088/1674-1137/38/5/057005
[8]	WU Yang , TANG Jing-Yu . Post-acceleration study for neutrino super-beam at CSNS. Chinese Physics C, 2013, 37(9): 097002. doi: 10.1088/1674-1137/37/9/097002
[9]	LIU Hua-Chang , PENG Jun , YIN Xue-Jun , OUYANG Hua-Fu , FU Shi-Nian . RF power coupling for the CSNS DTL. Chinese Physics C, 2011, 35(1): 92-95. doi: 10.1088/1674-1137/35/1/019
[10]	WU Xiao-Bing , OUYANG Hua-Fu , CHI Yun-Long , HE Wei , HUANG Tao , LI Gang , LIU Ying-Man , LU Yan-Hua , XU Tao-Guang , ZHANG Jun-Song , ZHANG Hua-Shun , ZHAO Fu-Xiang . CSNS H^- ion source test stand. Chinese Physics C, 2011, 35(7): 679-683. doi: 10.1088/1674-1137/35/7/014
[11]	LU Yan-Hua , LI Gang , OUYANG Hua-Fu . Control system for the CSNS ion source test stand. Chinese Physics C, 2010, 34(12): 1883-1886.
[12]	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
[13]	LIU Yu-Dong , YUE Jun-Hui , WANG Na . Studies on electron cloud instability in BEPCⅡ. Chinese Physics C, 2009, 33(S2): 71-74. doi: 10.1088/1674-1137/33/S2/018
[14]	CHEN Jia-Er , GUO Zhi-Yu , FU Shi-Nian , FANG Jia-Xun , LU Yuan-Rong , YAN Xue-Qing . Studies on RFQ accelerators and its applications. Chinese Physics C, 2009, 33(10): 926-929. doi: 10.1088/1674-1137/33/10/019
[15]	WANG Na , QIN Qing , LIU Yu-Dong . Electron proton instability in the CSNS ring. Chinese Physics C, 2009, 33(S2): 8-11. doi: 10.1088/1674-1137/33/S2/003
[16]	OUYANG Hua-Fu , LIU Hua-Chang , FU Shi-Nian . Study of the design of CSNS MEBT. Chinese Physics C, 2009, 33(7): 583-589. doi: 10.1088/1674-1137/33/7/015
[17]	CHI Yun-Long , WANG Wei . Design of Pulse Power Supply for CSNS Extraction Kicker Magnet. Chinese Physics C, 2008, 32(S1): 25-27.
[18]	DENG Hai-Xiao , DAI Zhi-Min . Gain of harmonic generation in high gain free electron laser. Chinese Physics C, 2008, 32(4): 297-302. doi: 10.1088/1674-1137/32/4/012
[19]	QIU Jing , TANG Jing-Yu , WANG Sheng , WEI Jie . Studies of Transverse Phase Space Painting for the CSNS RCS Injection. Chinese Physics C, 2007, 31(10): 942-946.
[20]	Zhao Liu . Hamiltonian Reductions of Supersymmetric Self-Dual Yang-Mills Model. Chinese Physics C, 1993, 17(S4): 361-369.

Access

Get Citation

CHEN Jin-Fang and TANG Jing-Yu. Studies of dual-harmonic acceleration at CSNS-Ⅱ[J]. Chinese Physics C, 2010, 34(10): 1643-1648. doi: 10.1088/1674-1137/34/10/018

CHEN Jin-Fang and TANG Jing-Yu. Studies of dual-harmonic acceleration at CSNS-Ⅱ[J]. Chinese Physics C, 2010, 34(10): 1643-1648. doi: 10.1088/1674-1137/34/10/018 shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2009-11-02
Revised: 2010-01-14

Article Metric

Article Views(3436)
PDF Downloads(507)
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

Studies of dual-harmonic acceleration at CSNS-Ⅱ

Corresponding author: CHEN Jin-Fang,

Received Date: 2009-11-02

Accepted Date: 2010-01-14

Available Online: 2010-10-05

Abstract:

The Rapid Cycling Synchrotron (RCS) of the China Spallation Neutron Source (CSNS) complex is designed to provide 1.56×10¹³ protons per pulse (ppp) during the initial stage, and it is upgradeable to 3.12×10¹³ ppp during the second stage and 6.24×10¹³ ppp during the ultimate stage. The high beam intensity in the RCS requires alleviation of space charge effects to reduce beam losses, which is key in such high beam power accelerators. With higher intensities in the upgrading phases, a dual-harmonic RF system is planned to produce flat-topped bunches that are useful to reduce the space charge effects. We have studied different schemes to apply the dual-harmonic acceleration in CSNS-Ⅱ, and have calculated the main parameters of the RF systems, which are presented in this paper.

HTML

Reference (1)

Studies of dual-harmonic acceleration at CSNS-Ⅱ

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article