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Two-plane painting injection scheme for BRing of HIAF

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Abstract

The high-intensity heavy-ion accelerator facility (HIAF) is under design at the Institute of Modern Physics (IMP) and will provide an intense ion beam for nuclear physics, atomic mass measurement research, and other applications. As the main ring of HIAF, the BRing accumulates beams to high intensity and accelerates them to high energy. To achieve high intensities up to \(1\times 10^{11}\) (\(^{238}\)U\(^{34+}\)), the injection gain of the BRing must be as high as 88. However, multiple multiturn injection supported by the electron cooling system takes a long time, causing substantial beam loss under a strong space charge effect. Hence, a two-plane painting injection scheme is proposed for beam accumulation in the BRing. This scheme uses a tilted injection septum and horizontal and vertical bump magnets to paint the beam into horizontal and vertical phase space simultaneously. In this paper, the two-plane painting injection parameters are optimized, and the resulting injection process is simulated using the Objective Ring Beam Injection and Tracking (ORBIT) code. An injection gain of up to 110.3 with a loss rate of \(2.3\%\) is achieved, meeting the requirements of BRing.

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Authors and Affiliations

  1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China

    Guo-Feng Qu, Wei-Ping Chai, Jia-Wen Xia, Jian-Cheng Yang, Heng Du, Zhong-Shan Li, Wen-Wen Ge, Wen-Heng Zheng & Peng Shang

  2. University of Chinese Academy of Sciences, Beijing, 100046, China

    Guo-Feng Qu, Heng Du, Zhong-Shan Li, Wen-Wen Ge, Wen-Heng Zheng & Peng Shang

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  1. Guo-Feng Qu
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  2. Wei-Ping Chai
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  3. Jia-Wen Xia
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  4. Jian-Cheng Yang
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  5. Heng Du
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  6. Zhong-Shan Li
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  7. Wen-Wen Ge
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  8. Wen-Heng Zheng
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  9. Peng Shang
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Correspondence to Wei-Ping Chai.

Additional information

This work was supported by the National Natural Science Foundation of China (No. 11505256).

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Qu, GF., Chai, WP., Xia, JW. et al. Two-plane painting injection scheme for BRing of HIAF. NUCL SCI TECH 28, 114 (2017). https://doi.org/10.1007/s41365-017-0260-5

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  • DOI: https://doi.org/10.1007/s41365-017-0260-5

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