PAC09 - List of Authors (Liu, X.H.)

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Liu, X.H.

Paper	Title	Page
TU6RFP064	Coaxial Coupler for X-Band Photocathode RF Gun	1693
	X.H. Liu, J.Q. Qiu, J. Shi, C.-X. Tang TUB, Beijing
	Funding: This work is supported by National Natural Science Foundation of China(Project 10735050) and National Basic Research Program of China (973 Program)(Grant No. 2007CB815102). The X-band photocathode RF gun can be utilized to generate electron beams with ultra-low emittance. In this paper, we present the design of a coaxial coupler for the X-band RF gun to avoid the emittance growth caused by field asymmetries. A detailed 3D simulation of the coupler is performed. The microwave circuit analysis is accomplished, and the relationship between the coupling factor and the coaxial coupler size is obtained. This paper likewise presents the beam dynamics parameters of the X-band RF gun with a coaxial coupler.

Paper

Title

Page

TU6RFP064

Coaxial Coupler for X-Band Photocathode RF Gun

1693

X.H. Liu, J.Q. Qiu, J. Shi, C.-X. Tang
TUB, Beijing

Funding: This work is supported by National Natural Science Foundation of China(Project 10735050) and National Basic Research Program of China (973 Program)(Grant No. 2007CB815102).

The X-band photocathode RF gun can be utilized to generate electron beams with ultra-low emittance. In this paper, we present the design of a coaxial coupler for the X-band RF gun to avoid the emittance growth caused by field asymmetries. A detailed 3D simulation of the coupler is performed. The microwave circuit analysis is accomplished, and the relationship between the coupling factor and the coaxial coupler size is obtained. This paper likewise presents the beam dynamics parameters of the X-band RF gun with a coaxial coupler.