Abstract

For purposes of scientific research, an L-band FEL injector was proposed at the China Institute of Atomic Energy (CIAE) some time ago [X.L. Zhai et al., Nucl. Instr. and Meth. A296 (1990) 684]. It consists of an electron gun, one subharmonic buncher (108 MHz), a fundamental buncher (1300 MHz), an accelerating section, a microwave power source and diagnostic devices. The design goal was to produce electrons at an energy of 20 MeV at a micropulse current of up to 50 A and a micropulse length of 10–20 ps. Now the injector (including the buncher) is complete and testing is under way. This paper describes preliminary results and reports the status of the injector.

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