The Research of Multi-cell Thermionic RF Gun Injector Based on X-band DAW Accelerating Structure

HU Yuan; TANG Chuan-Xiang; CHEN Huai-Bi; TONG De-Chun; LIN Yu-Zheng

Chinese Physics C> 2005, Vol. 29> Issue(7) : 700-704

The Research of Multi-cell Thermionic RF Gun Injector Based on X-band DAW Accelerating Structure

Department of Engineering Physics,Tsinghua University,Beijing 100084,China

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Abstract：
A multi-cell thermionic RF gun injector based on X-band(11.43GHz) Disk-and-Washer(DAW) accelerating structure has been developed. The influence to the RF characteristic of the washer supports and the mode overlap problem of DAW structure are analysed in this paper. Becaus DAW accelerating structure has a large coupling coefficient and the next nearest neighbour coupling can't be ignored, a special tuning method was developed. The results of dynamic simulation of this injector are given. Simulation shows the gun can accelerate electron beams of 40mA to 5—6MeV, with an emittance of 3.4π.mm.mrad. Manufacture and brazing of the RF gun have been finished, and the cold test results of it are also presented.

References

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HU Yuan, TANG Chuan-Xiang, CHEN Huai-Bi, TONG De-Chun and LIN Yu-Zheng. The Research of Multi-cell Thermionic RF Gun Injector Based on X-band DAW Accelerating Structure[J]. Chinese Physics C, 2005, 29(7): 700-704.

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Received: 2004-10-29
Revised: 2004-11-15

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

The Research of Multi-cell Thermionic RF Gun Injector Based on X-band DAW Accelerating Structure

Corresponding author: TANG Chuan-Xiang,

Department of Engineering Physics,Tsinghua University,Beijing 100084,China

Received Date: 2004-10-29

Accepted Date: 2004-11-15

Available Online: 2005-07-05

Abstract: A multi-cell thermionic RF gun injector based on X-band(11.43GHz) Disk-and-Washer(DAW) accelerating structure has been developed. The influence to the RF characteristic of the washer supports and the mode overlap problem of DAW structure are analysed in this paper. Becaus DAW accelerating structure has a large coupling coefficient and the next nearest neighbour coupling can't be ignored, a special tuning method was developed. The results of dynamic simulation of this injector are given. Simulation shows the gun can accelerate electron beams of 40mA to 5—6MeV, with an emittance of 3.4π.mm.mrad. Manufacture and brazing of the RF gun have been finished, and the cold test results of it are also presented.

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The Research of Multi-cell Thermionic RF Gun Injector Based on X-band DAW Accelerating Structure

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