Longitudinal Focusing Design of Space-Charge Dominated Beams

DENG Jian-Jun; WANG Jian-Guang; Reiser Martin; Godlove Terry

近期发现有不法分子冒充我刊与作者联系，借此进行欺诈等不法行为，请广大作者加以鉴别，如遇诈骗行为，请第一时间与我刊编辑部联系确认（《中国物理C》（英文）编辑部电话：010-88235947,010-88236950），并作报警处理。

本刊再次郑重声明：

（1）本刊官方网址为cpc.ihep.ac.cn和https://iopscience.iop.org/journal/1674-1137

（2）本刊采编系统作者中心是投稿的唯一路径，该系统为ScholarOne远程稿件采编系统，仅在本刊投稿网网址（https://mc03.manuscriptcentral.com/cpc）设有登录入口。本刊不接受其他方式的投稿，如打印稿投稿、E-mail信箱投稿等，若以此种方式接收投稿均为假冒。

（3）所有投稿均需经过严格的同行评议、编辑加工后方可发表，本刊不存在所谓的“编辑部内部征稿”。如果有人以“编辑部内部人员”名义帮助作者发稿，并收取发表费用，均为假冒。

《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 2003, Vol. 27> Issue(12) : 1119-1122

Longitudinal Focusing Design of Space-Charge Dominated Beams

Engineering Physics Dept.,Tsinghua University,Beijing 100084,China2 Institute for Plasma Research,University of Maryland at College Park,MD 20742,USA3 FM Technologies,Inc.,USA

Abstract
HTML
Reference
Related

PDF

Abstract：
Longitudinal focusing is of great importance in space-charge-dominated bunched beams such as heavy ion fusion. The bunches lengthen rapidly due to the strong space-charge forces during transportation. The electron ring at University of Maryland (UMD) is designed to operate with bunches having rectangular and parabolic profiles. Three induction cavities along the ring will be employed for longitudinal focusing. In this paper, we first briefly review the longitudinal dynamics of parabolic and rectangular bunches. The design of the induction cavities with their high repetition rate modulators is then presented. The preliminary test results of lower voltage and repetition rate version of two different modulators and the PSPICE simulation results show that modulators work well.

References

[1]

. WANG J G ,Bernal S ,Chin P et al.Design and Development of an Electron Recirculator.In:COMYN M et al.Proc.of the 1997 Particle Accelerator Confrence,Vol.2.Vancouver:APS ,1997.1855—18572. Faltens A ,Lee E P ,Rosenblum S S .J.Appl.Phys,1987,61(12):5219—52213. HO D D ,Brandon S T ,Lee E P .Part.Accel.,1991,35(15)4. WANG D X ,WANG J D ,Reiser M .Phys.Rev.,1994,73(1):66—695. WANG D X ,WANG J G ,Reiser M J.Appl.Phys.Lett.,1993,62(25):3232—32346. Reiser M .Theory and Design of Charged Particle Beams.New York:Wiley,1994.432—4367. Briggs R J.Linear Induction Accelerator.In:Proc.of LINAC’86,APS ,1986.10—138. WANG J G ,Reiser M .Nucl.Instru.Meth.in Phys.Res.,1991,301:19—269. CHEN Y B ,Reiser M J .Appl.Phys.,1989,65(9):3324—3328

[1]	G.D.Alton , H.Bilheux . Elementary Theory for Optimum Extraction of Space-Charge-Dominated Ion Beams from Plasma Boundaries. Chinese Physics C, 2007, 31(S1): 201-205.
[2]	DAI Jian-Ping . Adjustment of Energy of BFEL Linac. Chinese Physics C, 2006, 30(S1): 93-95.
[3]	Mao Li-Jun , YANG Xiao-Dong , XIA Jia-Wen , WEI Bao-Wen . Electron Beam Longitudinal Temperatures Of Electron Cooler On CSR. Chinese Physics C, 2006, 30(S1): 54-56.
[4]	YIN Ming , ZHOU Xiao-Yan . Studies on Wehnelt of Electron-Beam Accelerator. Chinese Physics C, 2005, 29(3): 301-304.
[5]	LI Hao-Hu , WANG Bing , ZHANG Jin-Quan , TANG Jing-Yu . Effect of Flat-Top Acceleration on Longitudinal Phase Space. Chinese Physics C, 2004, 28(8): 889-892.
[6]	LIU Yong . Space Charge and Longitudinal Stationarity in Bunched Beams. Chinese Physics C, 2003, 27(12): 1128-1132.
[7]	ZHANG Yong-Hui , CHEN Hong-Bin , KANG Qiang , CAO Shao-Yun , CHANG An-Bi . Development of Repetition Frequency Electron-Beam Generator Technology. Chinese Physics C, 2002, 26(8): 876-881.
[8]	OUYANG Hua-Fu . Effects of the Space Charge Forces and the Beam Halo in an AVF Cyclotron with Intense Beam Currents. Chinese Physics C, 2001, 25(6): 561-570.
[9]	OUYANG Hua-Fu . Effects of the Space Charge Forces and the Beam Halo in a Cyclotron. Chinese Physics C, 2001, 25(7): 674-679.
[10]	WANG ShuiQing . Calculation of the Electron Trajectory for 200kV Self-shielded Electron Accelerator. Chinese Physics C, 2000, 24(6): 573-577.
[11]	YANG XiaoDong , SONG MingTao , XIA JiaWen , WEI BaoWen , WU JunLi . Adiabatic Expansion of Electron Beam. Chinese Physics C, 2000, 24(12): 1179-1184.
[12]	ZHU JunBiao , LI YongGui , XIE JiaLin . Theoretical Estimation and Experimental Design of High lntensity Coherent Synchrotron Radiation Generated by Short Electron Bunches at BFEL. Chinese Physics C, 2000, 24(2): 172-180.
[13]	Chen Yinbao , Huang Zhibin . Nonlinear Space Charge Effects and Emittance Growth in Linac. Chinese Physics C, 1999, 23(12): 1231-1242.
[14]	SONG Zhong-Heng , WANG Xiao-Min . Calculation of Space Charge Field for Annulus and Disc Bunch of Charged Particles. Chinese Physics C, 1991, 15(1): 7-12.
[15]	YU Qing-Chang , QIU Hong , HUANG Jia-Chang . Relations Between Focusing Power of Space-Charge Lenses and External Electromagnetic Fields. Chinese Physics C, 1991, 15(1): 13-16.
[16]	YU Qing-Chang . ELECTRON CLOUDS IN AXIAL SYMMETRIC SPACE-CHARGE LENSES. Chinese Physics C, 1989, 13(4): 298-301.
[17]	WEI Kai-Yu , LIN Zhen-Hua . THE DESIGN AND STUDY OF SPACE CHARGE EFFECT FOR THE BPL 750keV BEAM TRANSPORT SYSTEM. Chinese Physics C, 1984, 8(5): 588-595.
[18]	QIU Hong , CHEN Jian-Pu , XU Jian-Ming . STUDIES OF THE FOCUSING PROPERTIES OF A SPACE CHARGE LENS. Chinese Physics C, 1983, 7(5): 583-588.
[19]	FANG SHOU-XIAN . COMPENSATION OF THE SPACE CHARGE FORCE IN A SYNCHROTRON BY MEANS OF RF QUADRUPOLE. Chinese Physics C, 1981, 5(2): 169-175.
[20]	Yu Qing-chang . THEORY OF NONLINEAR SPACE-CHARGE EFFECTS OF LOW ENERGY INTENSE CHARGED PARTICLE BEAMS. Chinese Physics C, 1980, 4(5): 579-587.

Access

Get Citation

DENG Jian-Jun, WANG Jian-Guang, Reiser Martin and Godlove Terry. Longitudinal Focusing Design of Space-Charge Dominated Beams[J]. Chinese Physics C, 2003, 27(12): 1119-1122.

DENG Jian-Jun, WANG Jian-Guang, Reiser Martin and Godlove Terry. Longitudinal Focusing Design of Space-Charge Dominated Beams[J]. Chinese Physics C, 2003, 27(12): 1119-1122. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2003-04-07
Revised: 1900-01-01

Article Metric

Article Views(2889)
PDF Downloads(538)
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

Longitudinal Focusing Design of Space-Charge Dominated Beams

Corresponding author: DENG Jian-Jun,

Engineering Physics Dept.,Tsinghua University,Beijing 100084,China2 Institute for Plasma Research,University of Maryland at College Park,MD 20742,USA3 FM Technologies,Inc.,USA

Received Date: 2003-04-07
Accepted Date: 1900-01-01
Available Online: 2003-12-05

Abstract: Longitudinal focusing is of great importance in space-charge-dominated bunched beams such as heavy ion fusion. The bunches lengthen rapidly due to the strong space-charge forces during transportation. The electron ring at University of Maryland (UMD) is designed to operate with bunches having rectangular and parabolic profiles. Three induction cavities along the ring will be employed for longitudinal focusing. In this paper, we first briefly review the longitudinal dynamics of parabolic and rectangular bunches. The design of the induction cavities with their high repetition rate modulators is then presented. The preliminary test results of lower voltage and repetition rate version of two different modulators and the PSPICE simulation results show that modulators work well.