Experimental Study of a Multi-Cavity RF Gun with Thermionic Cathode

Tang Chuanxiang; Lin Yuzheng; Wu Yuanming; Wang Youzhi; Zhao Xinqiao; Xie Jialin

Chinese Physics C> 1997, Vol. 21> Issue(S2) : 91-95

Experimental Study of a Multi-Cavity RF Gun with Thermionic Cathode

1. Department of Engineering Physics, Tsinghua University, Beijing, China;
2. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China

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Abstract：
A novel multi-cavity RF thermionic gun with very weak back bombardment effects has been designed, manufactured, tested, and subjected to experimentation. In this paper, we focus on the experimental results of this RF gun. From the current pulse shapes of BCT at the gun exit and the energy spectra at different positions of the macro-pulse, we can see that the back bombardment effects are suppressed greatly. A current of about 200 mA, a maximum electron energy of 1.8 MeV and a geometric RMS emittance of about 20-30 πrmm·mrad are obtained at the entrance of the linac.
- RF thermionic gun ,
- back bombardment ,
- current pulse ,
- emittance ,
- energy spectrum
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Tang Chuanxiang, Lin Yuzheng, Wu Yuanming, Wang Youzhi, Zhao Xinqiao and Xie Jialin. Experimental Study of a Multi-Cavity RF Gun with Thermionic Cathode[J]. Chinese Physics C, 1997, 21(S2): 91-95.

Tang Chuanxiang, Lin Yuzheng, Wu Yuanming, Wang Youzhi, Zhao Xinqiao and Xie Jialin. Experimental Study of a Multi-Cavity RF Gun with Thermionic Cathode[J]. Chinese Physics C, 1997, 21(S2): 91-95. shu

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Received: 1996-04-08

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沈阳化工大学材料科学与工程学院沈阳 110142

Experimental Study of a Multi-Cavity RF Gun with Thermionic Cathode

1. Department of Engineering Physics, Tsinghua University, Beijing, China;
2. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China

Received Date: 1996-04-08

Abstract: A novel multi-cavity RF thermionic gun with very weak back bombardment effects has been designed, manufactured, tested, and subjected to experimentation. In this paper, we focus on the experimental results of this RF gun. From the current pulse shapes of BCT at the gun exit and the energy spectra at different positions of the macro-pulse, we can see that the back bombardment effects are suppressed greatly. A current of about 200 mA, a maximum electron energy of 1.8 MeV and a geometric RMS emittance of about 20-30 πrmm·mrad are obtained at the entrance of the linac.