Experimental results from an injector for an IR FEL
Conference
·
OSTI ID:754298
- and others
An electron injector capable of delivering the high brightness electron beam necessary for an infrared free-electron laster (FEL) is described. The injector is composed of a high-DC-voltage GaAs photocathode gun coupled with a normal-conducting rf buncher and two superconducting rf cavities operating at 1.497 GHz. The gun pulse structure is mode locked to the fortieth subharmonic of the rf fundamental using a Nd:YLF drive laser. The gun provides 50 picosecond FWHM bunches at 60 pC per bunch with a normalized RMS transverse emittance less than 6 mmmrad at 9.5 MeV/c and an average current of 1.1 mA. Experimental measurements of the transverse and longitudinal beam properties of the injector are described. The results are compared with PARMELA. Operational issues for the injector are also presented.
- 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:
- 754298
- Report Number(s):
- DOE/ER/40150-1352; JLAB-ACC-98-06
- Country of Publication:
- United States
- Language:
- English
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