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WANG Yun, CHEN Zhi, ZHAO Hongwei, ZHAO Yangyang, SUN Liangting, YANG Yao, QIAN Cheng, WU Qi, MA Hongyi, ZHANG Wenhui, ZHANG Zimin, ZHANG Xuezhen, LIU Zhanwen. Study on Extraction System for High Current ECR Ion Source[J]. Nuclear Physics Review, 2013, 30(2): 141-146. DOI: 10.11804/NuclPhysRev.30.02.141
Citation: WANG Yun, CHEN Zhi, ZHAO Hongwei, ZHAO Yangyang, SUN Liangting, YANG Yao, QIAN Cheng, WU Qi, MA Hongyi, ZHANG Wenhui, ZHANG Zimin, ZHANG Xuezhen, LIU Zhanwen. Study on Extraction System for High Current ECR Ion Source[J]. Nuclear Physics Review, 2013, 30(2): 141-146. DOI: 10.11804/NuclPhysRev.30.02.141
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Study on Extraction System for High Current ECR Ion Source

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    • Abstract
  • To improve the quality of extracted ion beam from a high current ECR ion source, 1# and 2# extraction systems were designed and tested. The PBGUNS code was used to simulate the 1# and 2# extraction systems of proton ion beam. The emittance measurement results with the two different extraction systems were compared and analyzed with the simulation, the conclusion that more high quality beam extracted from 2# system than 1# system was got. The formula derivation of ECR ion source extraction system spherical aberration and MATLAB drawing was done by the analyzing on the distribution of extraction field equipotentials, effective emittance increasing caused by spherical berration was proved by 1# and 2# extraction systems beam phase space simulation result, beam focusing would be improved if electrode hole size increasing appropriately and a general concept on good optics focusing of ion beam extraction system was proposed finally.
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