Abstract
Compton scattering hard X-ray source for 10-40 keV are under construction using the X-band (11.424 GHz) electron linear accelerator and YAG laser at Nuclear Engineer ing Research laboratory, University of Tokyo. This work is a part of the national project on the development of advanced compact medical accelerators in Japan. National Institute for Radiological Science is the host institute and U. Tokyo and KEK are working for the X-ray source. Main advantage is to produce tunable monochromatic hard (10-40 keV) X-rays with the intensities of 108-109photons/s (at several stages) and the table-top size. In addition, dual energy monochromatic X-ray source can be realized that generate two monochromatic hard X-ray by turin with high (up to 10 pps) repetition rate by one X-ray source. The X-ray yield by the electron beam and Q-switch Nd: YAG laser of 2.5 J/10 ns is 107photons/RF-pulse (108photons/sec in 10 pps). X-band beam line for the demonstration is under commissioning. We also design to adopt a technique of laser circulation to increase the X-ray yield up to 108photons/pulse (109photons/s).
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