Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2018, Vol. 29 ›› Issue (10): 143 doi: 10.1007/s41365-018-0476-z

• SYNCHROTRON RADIATION TECHNOLOGY AND APPLICATIONS • Previous Articles     Next Articles

Generating femtosecond coherent X-ray pulses in a diffractionlimited storage ring with the echo-enabled harmonic generation scheme

Wei-Hang Liu 1,2 • Guan-Qun Zhou 1,2 • Yi Jiao 1   

  1. 1 Key Laboratory of Particle Acceleration Physics and Technology, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 10004, China
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • Contact: Yi Jiao E-mail:jiaoyi@ihep.ac.cn
  • Supported by:

    This work was supported by National Natural Science Foundation of China (No. 11475202, 11405187), the Youth Innovation Association of Chinese Academy of Sciences, and Key Research Program of Frontier Sciences, CAS (No. QYZDJ-SSW-SLH001).

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Wei-Hang Liu, Guan-Qun Zhou, Yi Jiao. Generating femtosecond coherent X-ray pulses in a diffractionlimited storage ring with the echo-enabled harmonic generation scheme.Nuclear Science and Techniques, 2018, 29(10): 143     doi: 10.1007/s41365-018-0476-z

Abstract:

To study ultrafast processes at the sub-picosecond level, novel methods based on coherent harmonic generation technologies have been proposed to generate ultrashort radiation pulses in existing ring-based light sources. Using the High Energy Photon Source as an example, we numerically test the feasibility of implementing one coherent harmonic generation technology, i.e., the echo-enabled harmonic generation (EEHG) scheme, in a diffraction-limited storage ring (DLSR). Two different EEHG element layouts are considered, and the effect of the EEHG process on the electron beam quality is also analyzed. Studies suggest that soft X-ray pulses, with pulse lengths of a few femtoseconds and peak powers of up to 1 MW, can be generated by using the EEHG scheme, while causing little perturbation to the regular operation of a DLSR.

Key words: Echo-enabled harmonic generation, Diffraction-limited storage ring, High-energy photon source, Femtosecond X-ray pulses