双束平行入射电子束引导的自注入电子加速效果的研究

张枫; 黄硕; 李晓锋; 余芹; 顾彦珺; 孔青

doi:10.7498/aps.62.242901

摘要

在粒子束引导的等离子尾波场加速机制中，为了加速电子获得最大能量，大量研究集中于改变单束牵引粒子束的线度、形状、电荷性质等参数. 综合考虑已有的实验结果，本文提出了一种相比于单束电子牵引更为有效的加速方式，利用双束平行电子束来加速自注入的电子. 通过2.5维粒子程序模拟，发现在牵引电子束具有相同能量、电量、尺寸的条件下，通过双束平行电子束加速得到的电子具有长程加速、高能和准单能性的特性. 同时在空泡内形成了一束独特的回流电子，进一步使得自注入电子具有更好的准直性.

关键词:

Abstract

In the case of wake field acceleration driven by charged particle bunches, many researchers focused on adjusting parameters such as magnitude, shape and electrical properties to amplify the maximum energy which drives electrons. Comprehensively considering the existing studies, in the paper we propose a new method of acceleration in which paralleled bunches are used to excite plasma wake field and trap self-injected electrons. It is proved to be more efficient than using single drive beam. With 2.5D PIC code, the driven electrons accelerated by paralleled bunches are found to possess the advantages of acceleration in longer distance, higher energy and better quasimonoenergy. Moreover, a bunch of backflow electrons is observed in the bubble, which makes self-injected electrons well collimated.

Keywords:

wake field acceleration driven by electron beams /
paralleled drive bunches /
particle in cell code

作者及机构信息

1.
复旦大学现代物理研究所, 应用粒子束教育部重点实验室, 上海 200433;

2.
复旦大学物理系, 上海 200433

基金项目: 国家自然科学基金（批准号：11175048）、上海市自然科学基金（批准号：11ZR1402700）、上海市教委科研创新重点项目（批准号：12ZZ011）和上海市重点学科（批准号：B107）资助的课题.

Authors and contacts

1.
Key Laboratory of Applied Particle Beam, Ministry of Education, Institute of Modern Physics, Fudan University, Shanghai 200433, China;

2.
Physics Department, Fudan University, Shanghai 200433, China

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 11175048), the Shanghai Natural Science Foundation, China (Grant No. 11ZR1402700), the Key Project of Shanghai Innovation Scientific Research Program, China (Grant No. 12ZZ011), and the Leading Academic Discipline Project of Shanghai, China (Grant No. B107).

参考文献

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[18]	Kalmykov S Y, Beck A, Yi S A 2011 Phys. Plasma 18 056704
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[20]	Wang G H, Wang X F, Dong K G 2012 Acta Phys. Sin. 61 165201 (in Chinese) [王广辉, 王晓方, 董克攻 2012 61 165201]
[21]	Zhou D F, Ma Y Y 2011 High Power Laser and Particle Beams 23 392 (in Chinese) [周东方, 马燕云 2011 强激光与粒子束 23 392]
[22]	Lotov K V 2010 Phys. Rev. ST Accel. Beams 13 041301
[23]	Caldwell A, Lotov K, Pukhov K, Simon F 2009 Nature Phys. 5 363
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[26]	Lu W 2007 Phys. Rev. ST Accel. Beams 10 061301
[27]	Gordienko S, Pukhov A 2005 Physics of Plasmas 12 043109

施引文献

[1]	Sheng Z M, Zhang J 2006 Progress in Nature Science 16 781 (in Chinese) [盛政明, 张杰 2006 自然科学进展 16 781]
[2]	Zhou G C, Li Y, Cao J B, Wang X Y 1998 Chin. Phys. Lett. 15 895
[3]	Ma J Y, Qiu X J, Zhu Z Y 2004 Chin. Phys. 13 373
[4]	Su D, Tang C J 2012 Acta Phys. Sin. 61 042501 (in Chinese) [苏东, 唐昌建 2012 61 042501]
[5]	Xu Z Z, Ma J X 1988 Acta Phys. Sin. 37 735 (in Chinese) [徐至展, 马锦秀 1988 37 735]
[6]	Chang W W, Zhang L F, Shao F Q 1991 Acta Phys. Sin. 40 182 (in Chinese) [常文蔚, 张立夫, 邵福球 1991 40 182]
[7]	Zhang H O, Wang K, Wang G L 2007 High Power Laser And Particle Beams 19 2039 (in Chinese) [张海鸥, 王琨, 王桂兰 2007 强激光与粒子束 19 2039]
[8]	Muggli P 2004 Phys. Rev. Lett. 93 014802
[9]	Esarey E, Sprangle P, Krall J, Ting A 1996 IEEE Trans. Plasma Sci. 24 252
[10]	Xu H, Chang W W, Yin Y, Zhuo H B 2004 Acta Phys. Sin. 53 171 (in Chinese) [徐涵, 常文蔚, 银燕, 卓红斌 2004 53 171]
[11]	Bane K L, Chen P, Wilson P B 1985 Report No. SLACPUB-3662
[12]	Katsouleas T 1986 Phys. Rev. A 33 2056
[13]	Bane K L, Chen P, Wilson P B 1985 IEEE Trans. Nucl. Sci. 32 3524
[14]	Schutt P, Weiland T, Tsakanov V M 1990 Proceedings of the Second All-Union Conference on New Methods of Charged Particle Acceleration Yerevan, USSR, October 19, 1989 pp12–17
[15]	Blumenfeld I 2007 Nature Phys. 445 05538
[16]	Ruggiero A G, Schoessow P, Simpson J 1986 AIP Conf. Proc. 165 247
[17]	Xu H, Sheng Z M, Zhang J 2007 Acta Phys. Sin. 56 968 (in Chinese) [徐慧, 盛政明, 张杰 2007 56 968]
[18]	Kalmykov S Y, Beck A, Yi S A 2011 Phys. Plasma 18 056704
[19]	Rosenzweig J 1989 Phys. Rev. A 39 1586
[20]	Wang G H, Wang X F, Dong K G 2012 Acta Phys. Sin. 61 165201 (in Chinese) [王广辉, 王晓方, 董克攻 2012 61 165201]
[21]	Zhou D F, Ma Y Y 2011 High Power Laser and Particle Beams 23 392 (in Chinese) [周东方, 马燕云 2011 强激光与粒子束 23 392]
[22]	Lotov K V 2010 Phys. Rev. ST Accel. Beams 13 041301
[23]	Caldwell A, Lotov K, Pukhov K, Simon F 2009 Nature Phys. 5 363
[24]	Zheng C Y, Wang W M 2006 Acta Phys. Sin. 55 310 (in Chinese) [郑春阳, 王伟民 2006 55 310]
[25]	Zhuo H B, Hu Q F, Liu J, Chi L H, Zhang W Y 2005 Acta Phys. Sin. 54 197 (in Chinese) [卓红斌, 胡庆丰, 刘杰, 迟利华, 张文勇 2005 54 197]
[26]	Lu W 2007 Phys. Rev. ST Accel. Beams 10 061301
[27]	Gordienko S, Pukhov A 2005 Physics of Plasmas 12 043109

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