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NEW RF-GUN DESIGN FOR THE PAL-XFEL ∗

Juho Hong, Kyehwan Gil, Moonsik Chae, In Soo Ko

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Abstract

We are developing an S-band photocathode RF-gun for the X-ray free electron laser (XFEL) at the Pohang Accelerator Laboratory (PAL). This RF-gun is a 1.6-cell RF-gun with dual-feed waveguide ports and two pumping ports. We have done the complete RF and thermal analysis of a new gun. The new RF-gun is designed to operate at a maximum field gradient of 130MV/m with a RF pulse width of 3 μs, a repetition rate of 120Hz. In this paper we present features and RF simulation results and thermal analysis results of the new RF-gun.

About this research paper

What this paper is about

We are developing an S-band photocathode RF-gun for the X-ray free electron laser (XFEL) at the Pohang Accelerator Laboratory (PAL). This RF-gun is a 1.6-cell RF-gun with dual-feed waveguide ports and two pumping ports. We have done the complete RF and thermal analysis of a new gun. The new RF-gun is designed to operate at a maximum field gradient of 130MV/m with a RF pulse width of 3 μs, a repetition rate of 120Hz. In this paper we present features and RF simulation results and thermal analysis results of the new RF-gun.

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Available abstract

We are developing an S-band photocathode RF-gun for the X-ray free electron laser (XFEL) at the Pohang Accelerator Laboratory (PAL). This RF-gun is a 1.6-cell RF-gun with dual-feed waveguide ports and two pumping ports. We have done the complete RF and thermal analysis of a new gun. The new RF-gun is designed to operate at a maximum field gradient of 130MV/m with a RF pulse width of 3 μs, a repetition rate of 120Hz. In this paper we present features and RF simulation results and thermal analysis results of the new RF-gun.

Key concepts: Electron gun, Photocathode, Radio frequency, Optics, Physics, Laser, Optoelectronics, Electrical engineering

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