Study of a free-electron laser driven by a laser-plasma accelerated beam at Peking University

Journal Article · Fri Feb 15 00:00:00 EST 2019 · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

DOI:https://doi.org/10.1016/j.nima.2019.02.025· OSTI ID:1506846

Qin, Weilun ^[1]; Zeng, Ling ^[1]; Huang, Senlin ^[1]; Zhao, Gang ^[1]; Ding, Yuantao ^[2]; Huang, Zhirong ^[2]; Hu, Ronghao ^[1]; Lu, Haiyang ^[1]; Yan, Xueqing ^[1]; Liu, Kexin ^[1]

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1. Peking Univ., Beijing (China)
2. SLAC National Accelerator Lab., Menlo Park, CA (United States)

The percent level energy spread and large divergence of laser-plasma beam are the main challenges of realizing compact short-wavelength free-electron lasers based on laser-plasma accelerators. These issues can be solved with proposed transverse gradient undulator method or bunch decompression method along with proper transport design. We present a study of using an expected 500 MeV laser-plasma beam with 0.3 mm•mrad normalized emittance and 0.3 mrad divergence at Peking University to drive compact free-electron laser at 30 nm. We employ the bunch decompression method with a chromatic matching beamline as well as the transverse gradient undulator method with assumed matched beam. Simulation shows that 700 MW power, 9.7 fs pulse duration and 0.85% relative bandwidth FEL output can be obtained using chromatic matched bunch decompression method. As a result FEL with similar performance can be obtained using the transverse gradient undulator scheme.

• Research Organization: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: AC02-76SF00515
• OSTI ID: 1506846
• Journal Information: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Journal Name: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment Journal Issue: C Vol. 925; ISSN 0168-9002
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
Chromatic matching
Free-Electron laser
Laser-Plasma accelerator
Transverse gradient undulator