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Consideration of optimized design for photocathode RF gun

Yang Xi, Kui Zhao, Hao Jiankui, Baocheng Zhang, Lingyi Zhang, Yuxing Tang, Yunchi Zhang, Chen Jia-Er

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Abstract

A 1.3 GHz photocathode RF gun is under study in peking University. The photocathode RF gun, composed of gun cavity, photocathode and Laser system, is expected to deliver a electron beam with a normalized transverse rms emittance of 1π mm·mrad at a charge of 1nC. Its performance has been studied by the space-charge tracking code PARMELA. The influences of the initialized electron beam were also studied. The emittance compensation technique is employed. After optimization of the parameters was achieved, the normalized transverse emittance is 1.39 πmm·mrad at the gun exit.

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What this paper is about

A 1.3 GHz photocathode RF gun is under study in peking University. The photocathode RF gun, composed of gun cavity, photocathode and Laser system, is expected to deliver a electron beam with a normalized transverse rms emittance of 1π mm·mrad at a charge of 1nC. Its performance has been studied by the space-charge tracking code PARMELA. The influences of the initialized electron beam were also studied. The emittance compensation technique is employed. After optimization of the parameters was achieved, the normalized transverse emittance is 1.39 πmm·mrad at the gun exit.

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Available abstract

A 1.3 GHz photocathode RF gun is under study in peking University. The photocathode RF gun, composed of gun cavity, photocathode and Laser system, is expected to deliver a electron beam with a normalized transverse rms emittance of 1π mm·mrad at a charge of 1nC. Its performance has been studied by the space-charge tracking code PARMELA. The influences of the initialized electron beam were also studied. The emittance compensation technique is employed. After optimization of the parameters was achieved, the normalized transverse emittance is 1.39 πmm·mrad at the gun exit.

Key concepts: Photocathode, Thermal emittance, Electron gun, Optics, Physics, Transverse plane, Space charge, Beam (structure)

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