標題: Driver linac design for a femtosecond head-on inverse Compton scattering X-ray source
作者: Huang, N. Y.
Lau, W. K.
Liang, C. C.
Lee, A. P.
Cheng, W. C.
Yang, S. S.
光電工程學系
Department of Photonics
關鍵字: Femtosecond beam;Inverse Compton scattering
公開日期: 1-May-2011
摘要: The feasibility of generating an ultra-short relativistic electron beam with a thermionic cathode rf gun driver linac for a femtosecond head-on inverse Compton scattering (ICS) X-ray source has been examined by space charge tracking throughout the entire beamline, from the cathode to the interaction point. It has been determined that GHz-repetition-rate electron pulses as short as 49 fs can be produced by compressing the energy-chirped beam from a 2998-MHz, 1.5-cell rf gun with an alpha magnet and an rf linac operating at the injection phase near the zero crossing. These electron pulses, with a 42-pC bunch charge, are accelerated to 27 MeV with an S-band traveling-wave constant-gradient linac structure for the ICS in an interaction chamber located downstream. The driver linac design that allows the operation of an ultra-short ICS X-ray source at a 0.7-angstrom wavelength, with a peak photon flux of 9.08 x 10(17) photons/s, is presented in this paper. (C) 2010 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.nima.2010.02.026
http://hdl.handle.net/11536/8891
ISSN: 0168-9002
DOI: 10.1016/j.nima.2010.02.026
期刊: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Volume: 637
Issue: 
起始頁: S76
結束頁: S79
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