Using an alpha magnet to compress the electron bunches from a photocathode RF gun

被引：0
|
作者：
Rajabi, A. [1 ,2 ]
Niknam, A. R. [2 ]
Shokri, B. [2 ,3 ]
机构：
[1] Eindhoven Univ Technol, Dept Appl Phys, Coherence & Quantum Technol Grp, POB 513, NL-5600 MB Eindhoven, Netherlands
[2] Shahid Beheshti Univ, Laser & Plasma Res Inst, GC, Tehran 1983963113, Iran
[3] Shahid Beheshti Univ, Dept Phys, GC, Tehran 1983963113, Iran
来源：
JOURNAL OF INSTRUMENTATION | 2019年 / 14卷 / 10期
关键词：
Accelerator modelling and simulations (multi-particle dynamics; single-particle dynamics); Accelerator Subsystems and Technologies; Beam dynamics; Instrumentation for FEL; LASER-DRIVEN;
D O I：
10.1088/1748-0221/14/10/P10026
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
We report here the design, simulation, and characterization of a compact electron injector for the formation of high-current, femtosecond electron bunches from a photocathode RF gun without mandatory use of ultra-short laser pulses and a high power RF supply. The proposed injector consists of a 1.6-cell S-band photocathode RF gun to produce the electron beam and a small bunch compressor to increase the peak current. The RF gun is designed to operate at a 65 MV/m accelerating field gradient, and the bunch compressor is a small ff-magnet with a maximum magnetic field gradient of 340 G/cm. The output beam from the gun has 100 pC charge per-bunch that is equivalent to a beam current of similar to 15 A, and output beam from the injector has an RMS bunch length of similar to 439 fs, a peak current of similar to 120Aand anRMS normalized horizontal emittance of 1.21 mm-mrad.
引用
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页数：16
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