Commissioning the photocathode radio frequency gun: a candidate electron source for Hefei Advanced Light Facility

Wang, Wenxing; Li, Cheng; He, Zhigang; Zhang, Shancai; Huang, Ruixuan; Li, Weiwei; Lü, Ping; Li, Chuan; Tang, Leilei; Shang, Feng-lei; Wu, Fangfang; Jia, Dagong; Zhang, Haiyan; Wang, Wei

doi:10.1007/s41365-022-01000-6

NUCL SCI TECH

2022

DOI: 10.1007/s41365-022-01000-6

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Commissioning the photocathode radio frequency gun: a candidate electron source for Hefei Advanced Light Facility

Wenxing Wang

Cheng Li

Zhigang He

et al.

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Cited by 4 publications

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“…Beam testThe beam experiment and function test are carried out on the Photocathode Microwave Gun experimental platform of NSRL[16]. The excitation signal of the low-level output from the device is amplified by a solid-state amplifier first, then further amplified by a klystron into a 1.6-cell microwave gun (RF gun), which accelerates the electron beam to 4.5 MeV.…”

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Development of a digital low-level RF system for the STCF

Xie,

Xiong,

Zhang

et al. 2024

J. Inst.

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With the development of particle physics, higher requirements are put forward for the brightness and energy of the collider. A new collider — the Super Tau-Charm Facility (STCF) — is under study in China. To meet the high acquirement of the quality of the beam, a digital low-level RF (LLRF) system that achieves high stability plays a critical role as a part of the microwave system of Linacs. This paper introduces the design of a digital LLRF system that works in the S-band (2856 MHz) as required by Linacs of the STCF. The system architecture and hardware design as well as the control algorithms and software design are discussed and tested. The system includes a signal source, a frequency synthesis system and an IF signal processor. The phase noise of the signal source is as low as 20.3 fs, and the low-level IF signal processor adopts amplitude and phase control by a PI-type controller. They jointly realize ultra-low phase noise signal output. The table experiments show that the short-term amplitude and phase stability of the system is better than 0.01% and 0.01°, respectively. The beam experiments show that the closed-loop phase stability in the cavity is about 0.1°. The results prove that the LLRF system meets the requirement of the STCF.

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confidence: 99%

Development of a digital low-level RF system for the STCF

Xie,

Xiong,

Zhang

et al. 2024

J. Inst.

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Design of S-band photoinjector with high bunch charge and low emittance based on multi-objective genetic algorithm

et al. 2023

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

Wang

Meng

et al. 2023

NUCL SCI TECH

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Commissioning the photocathode radio frequency gun: a candidate electron source for Hefei Advanced Light Facility

Cited by 4 publications

References 29 publications

Development of a digital low-level RF system for the STCF

Development of a digital low-level RF system for the STCF

Design of S-band photoinjector with high bunch charge and low emittance based on multi-objective genetic algorithm

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

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