摘要
中国工程物理研究院正在开展自由电子激光太赫兹源(FEL-THz)的研究。介绍了中物院FEL-THz束线的设计,通过PARMELA和TRANSPORT等程序优化了束线参数,并通过IMPACT-T和ELEGANT程序核对了模拟结果。优化结果表明,电子束在摇摆器入口处能量7～8MeV、平均电流5mA、横向归一化发射度小于10mm·mrad,满足设计要求。
A THz free electron laser （FEL-THz） is being constructed in China Academy of Engineering Physics （CAEP） with the aim of proving high-power, monochromatic and tunable radiation for research in a va riety of experimental fields. This facility consists of an injector equipped with a photo-cathode direct current gun, an achromatic transfer line, and an undulator for THz radiation. The physical design of the beamline is ac- complished with the PARMELA and TRANSPORT programs. Start to end simulation is performed and the re- sult is crosschecked with the codes of IMPACT-T and ELEGANT. The results show that it is feasible to a- chieve an electron beam with energy of 7 ～8 MeV, beam current of about 5 mA, and normalized transverse emittance typically below 10 mm · mrad at the entrance of the undulator.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2014年第8期213-217,共5页
High Power Laser and Particle Beams
基金
supported by National Key Scientific Instrument Development Projects(2011YQ130018)
