期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 46, 期 32, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0022-3727/46/32/325501
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资金
- University of Wisconsin Graduate School
- US Department of Energy [DE-FG02-07ER46383]
- NASA [NNX10AN93G]
- U.S. Department of Energy (DOE) [DE-FG02-07ER46383] Funding Source: U.S. Department of Energy (DOE)
- NASA [127664, NNX10AN93G] Funding Source: Federal RePORTER
A conceptual design for a soft x-ray free-electron laser (FEL) using a short-pulsed, high energy near infrared laser undulator and a low-emittance modest-energy (similar to 170 MeV) electron beam is described. This low-cost design uses the laser undulator beam in a nearly copropagating fashion with respect to the electron beam, instead of the traditional 'head-on' fashion. The nearly copropagating geometry reduces the Doppler shift of scattered radiation to yield soft, rather than hard x-rays. To increase the FEL gain a sheared laser pulse from a Ti : sapphire or other broadband laser is used to extend the otherwise short interaction time of the nearly copropagating laser undulator beam with a relativistic electron beam.
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