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Development and simulation of a gridded thermionic cathode electron gun for a high-energy photon source

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Abstract

A gridded thermionic cathode electron gun was developed for the linear accelerator of the High Energy Photon Source (HEPS). An electron gun should provide a large maximum bunch charge with a wide adjustable range. To satisfy these requirements, the shape of the electrode was optimized using a multi-objective genetic algorithm. A large bunch charge with an adjustable range was achieved using the grid-limited gun, the flow of which was analyzed using 3-D simulations. The electron gun has been manufactured and tested, and the measured data of the grid-limited current and simulation results are compared and discussed in this study.

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Data availability

The data that support the findings of this study are openly available in Science Data Bank at https://www.doi.org/10.57760/sciencedb.j00186.00031 and http://resolve.pid21.cn/31253.11.sciencedb.j00186.00031.

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Authors and Affiliations

  1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China

    Sheng-Chang Wang, Da-Yong He, Cai Meng, Jing-Yi Li, Zu-Sheng Zhou & Jin-Dong Liu

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  1. Sheng-Chang Wang
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  2. Da-Yong He
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  3. Cai Meng
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  4. Jing-Yi Li
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  5. Zu-Sheng Zhou
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  6. Jin-Dong Liu
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Contributions

All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by Sheng-Chang Wang, Jing-Yi Li and Da-Yong He. The first draft of the manuscript was written by Shengchang Wang and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

Corresponding authors

Correspondence to Da-Yong He or Jing-Yi Li.

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Wang, SC., He, DY., Meng, C. et al. Development and simulation of a gridded thermionic cathode electron gun for a high-energy photon source. NUCL SCI TECH 34, 39 (2023). https://doi.org/10.1007/s41365-023-01195-2

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  • DOI: https://doi.org/10.1007/s41365-023-01195-2

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