Impact factor of Chinese Physics C is 3.6 in 2023 Impact factor of Chinese Physics C is 3.6 in 2022 2021 Impact Factor 2.944
Advanced Search
Chinese Physics C> 2007, Vol. 31> Issue(S1) : 128-132 

Enhancing the Performances of Conventional B-Geometry ECR Ion Sources with Broadband Microwave Radiation

  •  Oak Ridge National Laboratory, Oak Ridge, TN 37831-6372, USA2 AccSys Technology, 1177 A Quarry Lane, Pleasanton, CA 94566, USA3 Department of Physics, P.O. Box 35, FIN-40014, University of Jyvaskyla JYFL, Finland

  • As clearly demonstrated at several laboratories, the performances of electron-cyclotron resonance (ECR) ion sources can be enhanced by increasing the physical sizes (volumes) of embedded ECR zones. Enlarged ECR zones have been achieved by engineering the central magnetic field region of these sources so they are uniformly-distributed "volumes" in resonance with single-frequency rf power. Alternatively, the number of ECR {surfaces} in conventional minimum-B geometry sources can be increased by heating their plasmas with multiple, discrete frequency microwave radiation. Broadband rf power offers a simple, low cost and arguably more effective means for increasing the physical sizes of the ECR zones within the latter source type. In this article, theoretical arguments are made in support of the volume effect and the charge-state enhancing effects of broadband microwave radiation (bandwidth: 200MHz) plasma heating are demonstrated by comparing the high-charge-states of Ar ion beams, produced by powering a conventional minimum-B geometry, 6.4GHz ECR ion source, equipped with a biased disk, with those produced by conventional bandwidth (bandwidth: ～1.5MHz) radiation.
  • 加载中

  • References

    [1] . Drentje A G. Rev. Sci. Instrum., 2003, 74: 26312. Alton G D, Smithe D N. Rev. Sci. Instrum., 1994, 65: 7553. Alton G D. Microwave Electron Cyclotron Electron Resonance (ECR) Ion Source with a Large, Uniformly Distributed, Axially Symmetric, ECR Plasma Volume, U.S.Patent 5,506,475 (1996)4. Alton G D. Proc. 14th Int. Conf. Cyclotrons and Their Applications, Cape Town, South Africa, 1995. 3625. Alton G D. Production of Large Resonant Plasma Volumes in Microwave Electron Cyclotron Resonance Ion Sources,U.S. Patent 5,841,237 (1998)6. Alton G D, Kawai Y, LIU Y et al. Proc. 16th Int. Workshop on ECR Ion Sources, AIP CP749, 2004. 1037. Bilheux H. Design And Initial Comparative Evaluation Studies of Conventional "Surface"- And New Concept"Volume"- Type, All Permanent Magnet Electron Cyclotron Resonance (ECR) Ion Source, Doctor of Physics Thesis, Université de Versailles Saint-Quentin-En-Yvelines,France (2003)8. Müller L et al. Proc. 15th Int. Workshop on ECR Ion Sources, Jyvskyl, Finland, 2002. 359. LIU Y, Alton G D, Bilheux H et al. Nucl. Instrum. Methods,2005, B241: 96510. XIE Z Q, Lyneis C M. Rev. Sci. Instrum., 1995, 66: 421811. Alton G D, Meyer F M, LIU Y et al. Rev. Sci. Instrum.,1998, 69: 230512. Vondrasek R C, Scott R, Pardo R C. Rev. Sci. Instrum.,2006, 77: 33713. Koivisto H, Suominen P, Tarvainen O et al. Rev. Sci. Instrum.,2006, 77: 31614. Koivisto H et al. Nukleonika, 2003, 48(Supplement 2): S8115. The Model UFX9850 white-noise generator used in the experiments is a product of Noise/Com, Inc., Parsippany, NJ16. Tarvainen O, Suominen P, Koivisto H. Rev. Sci. Instrum.,2004, 75: 3138

  • Access

    加载中

Get Citation
G.D.Alton1, Y.Kawai2, Y.Liu1, O.Tarvainen3, P.Suominen3 and H.Koivisto3. Enhancing the Performances of Conventional B-Geometry ECR Ion Sources with Broadband Microwave Radiation[J]. Chinese Physics C, 2007, 31(S1): 128-132.
G.D.Alton1, Y.Kawai2, Y.Liu1, O.Tarvainen3, P.Suominen3 and H.Koivisto3. Enhancing the Performances of Conventional B-Geometry ECR Ion Sources with Broadband Microwave Radiation[J]. Chinese Physics C, 2007, 31(S1): 128-132. shu
Milestone
Received: 2007-05-30
Revised: 1900-01-01
Article Metric

Article Views(3204)
PDF Downloads(656)
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

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Email This Article

Title:
Email:

Enhancing the Performances of Conventional B-Geometry ECR Ion Sources with Broadband Microwave Radiation

  • Oak Ridge National Laboratory, Oak Ridge, TN 37831-6372, USA2 AccSys Technology, 1177 A Quarry Lane, Pleasanton, CA 94566, USA3 Department of Physics, P.O. Box 35, FIN-40014, University of Jyvaskyla JYFL, Finland
  • Received Date: 2007-05-30
  • Accepted Date: 1900-01-01
  • Available Online: 2007-01-03

Abstract: As clearly demonstrated at several laboratories, the performances of electron-cyclotron resonance (ECR) ion sources can be enhanced by increasing the physical sizes (volumes) of embedded ECR zones. Enlarged ECR zones have been achieved by engineering the central magnetic field region of these sources so they are uniformly-distributed "volumes" in resonance with single-frequency rf power. Alternatively, the number of ECR {surfaces} in conventional minimum-B geometry sources can be increased by heating their plasmas with multiple, discrete frequency microwave radiation. Broadband rf power offers a simple, low cost and arguably more effective means for increasing the physical sizes of the ECR zones within the latter source type. In this article, theoretical arguments are made in support of the volume effect and the charge-state enhancing effects of broadband microwave radiation (bandwidth: 200MHz) plasma heating are demonstrated by comparing the high-charge-states of Ar ion beams, produced by powering a conventional minimum-B geometry, 6.4GHz ECR ion source, equipped with a biased disk, with those produced by conventional bandwidth (bandwidth: ～1.5MHz) radiation.

    HTML

Reference (1)

目录

Link
IOPScience
SCOAP3
arXiv
Chinese Physical Society
Journal information
Introduction
Editorial Board
Others
Subscribe
Contact us
QQ: 1307685413
Tel: +86-010-88235947
Fax: +86-010-88233126
E-mail: cpc@ihep.ac.cn

  • CPC Website

  • IOP Website

  • CPC WeChat

Copyright © Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, China 京ICP备05002789号-1

Supported by: Beijing Renhe Information Technology Co. Ltd  E-mail: info@rhhz.net

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return