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WEPSO89 Design of a Resonator for the CSU THz FEL FEL, coupling, undulator, radiation 719
 
  • P.J.M. van der Slot
    Mesa+, Enschede, The Netherlands
  • S. Biedron, S.V. Milton, P.J.M. van der Slot
    CSU, Fort Collins, Colorado, USA
 
  Funding: This research is support by Office of Naval Research Global, grant number N62909-10-1-7151
A 6-MeV L-band linac will be used to drive a planar, fixed gap, 2.5-cm period, hybrid undulator with parabolic pole faces. Consequently, this system is capable of generating wavelengths from 160 to 600 μm. In this paper we discuss the design of an optical resonator for this system. The resonator uses hole-coupled mirrors to allow for a straight electron beam line. The Rayleigh length, the position of the waist of the cold-cavity mode and the hole radii will be investigated to optimize the performance of the FEL.