Design of a New DC-RF Injector Used in High Average Power FEL

HU Yan-Le; ZHAO Kui; CHEN Jia-Er; ZHANG Bao-Cheng; HAO Jian-Kui; WANG Li-Fang

Chinese Physics C> 2001, Vol. 25> Issue(8) : 787-792

Design of a New DC-RF Injector Used in High Average Power FEL

Institute of Heavy Ion Physics, Peking University, Beijing 100871, China

Abstract
HTML
Reference
Related

PDF

Abstract：
Here we give the design proposal of a new DC-RF injector used in high average power FEL. The injector includes a Pierce gun and a 1+1/2 SC cavity. It will be able to provide high average beam current because it can work in CW mode. By changing the shape of the first 1/2 cell of SC cavity to enforce the focusing effect, we can decrease the distance between photocathode and SC cavity. Thus, the growth of emittance can be suppressed effectively. Through the simulation of particle dynamics with PARMELA, the shape of Pierce gun and the optimized synchronous phase of the SC cavity can be decided. The simulation results show that this kind of injector is feasible.

References

[1]

. Neil G R,Bohn C L,Benson S V et al.Phys.Rev.Lett.,2000,84(4):662—6652. Benson S.High Power Free-Electron Lasers.In:Proc.of the PAC.BNL,1999,212—2163. Summary of Free Electron Laser for Industry.CEBAF,1995,Vol.24. Janssen D,Stein P vom,Bushuev A et al.The Development ofa Superconducting RF Gun.In:Proc.of the PAC.TRIUMF,1997,2838—28395. Volkov V,Karliner M,Petrov V et al.Beam Dynamics in RF-Gun Cavity with a Modified First Cell.In:Proc.of the PAC.TRIUMF,1997,2796—29786. Edwards D.Tesla Test Facility Design Report.Hamburg:DESY,19957. YANG Xi.Design and Critical Technique Researches on High Brightness Photocathode RF Gun.Thesis of M S Degree in Peking University.2000(in Chinese)(杨希.高亮度光阴极微波电子枪的设计及关键技术研究硕士研究生学位论文.2000)8. ZHAO K,GENG R L,WANG L F et al.Nucl.Instr. Meth.in Phys.Res.,1996,A375:147—1499. James H Billen.PARMELA Documentation.LANL,1997

Access

Get Citation

HU Yan-Le, ZHAO Kui, CHEN Jia-Er, ZHANG Bao-Cheng, HAO Jian-Kui and WANG Li-Fang. Design of a New DC-RF Injector Used in High Average Power FEL[J]. Chinese Physics C, 2001, 25(8): 787-792.

HU Yan-Le, ZHAO Kui, CHEN Jia-Er, ZHANG Bao-Cheng, HAO Jian-Kui and WANG Li-Fang. Design of a New DC-RF Injector Used in High Average Power FEL[J]. Chinese Physics C, 2001, 25(8): 787-792. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2000-08-07
Revised: 1900-01-01

Article Metric

Article Views(4043)
PDF Downloads(652)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Design of a New DC-RF Injector Used in High Average Power FEL

Corresponding author: HU Yan-Le,

Institute of Heavy Ion Physics, Peking University, Beijing 100871, China

Received Date: 2000-08-07
Accepted Date: 1900-01-01
Available Online: 2001-08-05

Abstract: Here we give the design proposal of a new DC-RF injector used in high average power FEL. The injector includes a Pierce gun and a 1+1/2 SC cavity. It will be able to provide high average beam current because it can work in CW mode. By changing the shape of the first 1/2 cell of SC cavity to enforce the focusing effect, we can decrease the distance between photocathode and SC cavity. Thus, the growth of emittance can be suppressed effectively. Through the simulation of particle dynamics with PARMELA, the shape of Pierce gun and the optimized synchronous phase of the SC cavity can be decided. The simulation results show that this kind of injector is feasible.