FEL2011 - List of Authors (Li, P.)

Paper	Title	Page
WEPA21	Research of Emittance Compensation of CAEP CW DC-Gun Photoinjector	377
	P. Li, M. Li, D. Wu, Z. Xu, X. Yang CAEP/IAE, Mianyang, Sichuan, People's Republic of China
	Emittance growth is very import for photo-cathode injector due to space charge effect. The emittance compensation technology will be used on the 350 kV photo-cathode DC gun for the CAEP CW FEL, where the energy of electron beam is extremely low and Emittance growth is great severity. In this paper, the space charge force and its effect on electron beam transverse emittance is discussed, the principle of emittance compensation in phase space is analyzed. And a solenoid for emittance compensation is designed. Its beam dynamics has been studied by the PARMELA code. Simulation results indicate that the normalized transverse RMS emittance for electron beam of 80 pC is 1.267 mm•mrad with σ_r=1.5 mm, σ_z=4.25 pS.

Paper

Title

Page

Research of Emittance Compensation of CAEP CW DC-Gun Photoinjector

377

P. Li, M. Li, D. Wu, Z. Xu, X. Yang
CAEP/IAE, Mianyang, Sichuan, People's Republic of China

Emittance growth is very import for photo-cathode injector due to space charge effect. The emittance compensation technology will be used on the 350 kV photo-cathode DC gun for the CAEP CW FEL, where the energy of electron beam is extremely low and Emittance growth is great severity. In this paper, the space charge force and its effect on electron beam transverse emittance is discussed, the principle of emittance compensation in phase space is analyzed. And a solenoid for emittance compensation is designed. Its beam dynamics has been studied by the PARMELA code. Simulation results indicate that the normalized transverse RMS emittance for electron beam of 80 pC is 1.267 mm•mrad with σ_r=1.5 mm, σ_z=4.25 pS.