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Physics of JLab FEL injector

Conference ·
OSTI ID:754372
Jefferson Laboratory is currently commissioning a high-power kw-level cw IR FEL which recently demonstrated impressive high-power capability with the linac operating in a nonrecirculating mode. The injector, which provides a 10 MeV electron beam with high bunch charge (60--135 pC) to the linac, consists of a 350 kV dc photocathode gun and two 5-cell superconducting rf cavities, along with a buncher cavity. Due to the nonrelativistic nature of the electron beam at 350 keV there is some interesting physics involved in the beta=1srf cavities during acceleration. This is discussed, as is the usual space-charge-originated emittance degradation at various injector components.
Research Organization:
Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
Sponsoring Organization:
USDOE Office of Energy Research (ER) (US)
DOE Contract Number:
AC05-84ER40150
OSTI ID:
754372
Report Number(s):
DOE/ER/40150-1375; JLAB-ACP-99-03
Country of Publication:
United States
Language:
English

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