Production of Pulsed Ion Beams by ECR Ion Source Afterglow Mode

SONG Pei; GUO Xiao-Hong; ZHAO Hong-Wei; ZHANG Zi-Min; FENG Yu-Cheng; LI Jing-Yu; ZHANG Xue-Zhen

Chinese Physics C> 2001, Vol. 25> Issue(10) : 1029-1034

Production of Pulsed Ion Beams by ECR Ion Source Afterglow Mode

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China

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Abstract：
To satisfy the requirements of the Heavy Ion Cooling Storage Ring which is under con- struction at Lanzhou, afterglow mode was tested with the IMP 14 .5GHz ECR ion source to produce pulsed ion beams. The afterglow phenomenon was clearly observed and the pulsed ion beams of Ar11+ and Ar12+ were successfully produced with pulsed rf power. The peak current of the pulsed beam is typically two or three times higher than that of cw beam. The afterglow peak current could increase by a factor of six after further optiedzation during the experiment. The mechani8m of the af terglow mode was studied and discussed on basis of the test results and physical model of ECR ion source.

References

[1]

ZHAO Hong–Wei et al. Atomic Energy Science and Technology, 2000, 34(3):282–288(in Chinese)(赵红卫等.原子能科学技术,2000,34(3):282—288)2 ZHAO H W, WEI B W, LIU Z W. Rev. Sci. Instrum, 2000, 71(2):646–651 3 Hill C E, Wenander F. Experiments on tbe Pulsed Afterglow Operation of an ECR Ion Source. In: Proceedings of 14th Interna–tional Workshop on ECR Ion Souroes. Deneva, Switzerland: CERN, 1999. 187–1904 Sortais P. Rev. Sci. Instrum., 1992, 63(4):2801–2805

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SONG Pei, GUO Xiao-Hong, ZHAO Hong-Wei, ZHANG Zi-Min, FENG Yu-Cheng, LI Jing-Yu and ZHANG Xue-Zhen. Production of Pulsed Ion Beams by ECR Ion Source Afterglow Mode[J]. Chinese Physics C, 2001, 25(10): 1029-1034.

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Received: 2000-11-14
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Production of Pulsed Ion Beams by ECR Ion Source Afterglow Mode

Corresponding author: SONG Pei,

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China

Received Date: 2000-11-14
Accepted Date: 1900-01-01
Available Online: 2001-10-05

Abstract: To satisfy the requirements of the Heavy Ion Cooling Storage Ring which is under con- struction at Lanzhou, afterglow mode was tested with the IMP 14 .5GHz ECR ion source to produce pulsed ion beams. The afterglow phenomenon was clearly observed and the pulsed ion beams of Ar11+ and Ar12+ were successfully produced with pulsed rf power. The peak current of the pulsed beam is typically two or three times higher than that of cw beam. The afterglow peak current could increase by a factor of six after further optiedzation during the experiment. The mechani8m of the af terglow mode was studied and discussed on basis of the test results and physical model of ECR ion source.