Injection method of barrier bucket supported by off-aligned electron cooling for CRing of HIAF

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Guo-Dong Shen, Jian-Cheng Yang, Jia-Wen Xia, Li-Jun Mao, Da-Yu Yin, Wei-Ping Chai, Jian Shi, Li-Na Sheng, A.Smirnov, Bo Wu and He Zhao. Injection method of barrier bucket supported by off-aligned electron cooling for CRing of HIAF[J]. Chinese Physics C, 2016, 40(8): 087004. doi: 10.1088/1674-1137/40/8/087004
Guo-Dong Shen, Jian-Cheng Yang, Jia-Wen Xia, Li-Jun Mao, Da-Yu Yin, Wei-Ping Chai, Jian Shi, Li-Na Sheng, A.Smirnov, Bo Wu and He Zhao. Injection method of barrier bucket supported by off-aligned electron cooling for CRing of HIAF[J]. Chinese Physics C, 2016, 40(8): 087004.  doi: 10.1088/1674-1137/40/8/087004 shu
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Received: 2016-01-05
Revised: 2016-03-22
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    Supported by New Interdisciplinary and Advanced Pilot Fund of Chinese Academy of Sciences

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Injection method of barrier bucket supported by off-aligned electron cooling for CRing of HIAF

    Corresponding author: Guo-Dong Shen,
  • 1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
  • 2. University of Chinese Academy of Sciences, Beijing 100049, China
  • 3.  Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
  • 4.  Joint Institute for Nuclear Research, Dubna 141980, Russian Federation
Fund Project:  Supported by New Interdisciplinary and Advanced Pilot Fund of Chinese Academy of Sciences

Abstract: A new accelerator complex, HIAF (the High Intensity Heavy Ion Accelerator Facility), has been approved in China. It is designed to provide intense primary and radioactive ion beams for research in high energy density physics, nuclear physics, atomic physics as well as other applications. In order to achieve a high intensity of up to 5×1011 ppp 238U34+, the Compression Ring (CRing) needs to stack more than 5 bunches transferred from the Booster Ring (BRing). However, the normal bucket to bucket injection scheme can only achieve an intensity gain of 2, so an injection method, fixed barrier bucket (BB) supported by electron cooling, is proposed. To suppress the severe space charge effect during the stacking process, off-alignment is adopted in the cooler to control the transverse emittance. In this paper, simulation and optimization with the BETACOOL program are presented.

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