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AbstractAbstract
[en] A new scheme for X-ray free electron lasers (XFELs) is presented, which makes it possible to generate an isolated monocycle X-ray pulse. This scheme is based on coherent emission from a chirped microbunch when passing through a strongly tapered undulator, and the pulse lengthening by optical slippage intrinsic to the lasing process of FELs, can be effectively suppressed through destructive interference of electromagnetic waves emitted at individual undulator periods. Numerical simulations show that an isolated monocycle X-ray pulse with the wavelength of 8.6 nm and the peak power of 1.2 GW can be generated if this scheme is applied to a 2-GeV and 2-kA electron beam. (author)
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Particle Accelerator Society of Japan, Tokyo (Japan); 1419 p; Aug 2015; p. 10-14; 12. annual meeting of Particle Accelerator Society of Japan; Tsuruga, Fukui (Japan); 5-7 Aug 2015; Available from Particle Accelerator Society of Japan, 2-62-8-507 Higashi-Ikebukuro, Toshima-ku, Tokyo, 170-0013 Japan; Also available from the Internet at URL http://www.pasj.jp/web_publish/pasj2015/proceedings/index.html; 20 refs., 4 figs., 1 tab.
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Conference
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