OPTICS DESIGN AND LAYOUT FOR THE ELECTRON BEAM TEST FACILITY AT DARESBURY LABORATORY

An Electron Beam Test Facility (EBTF) is being developed at Daresbury Laboratory [1] to provide the beam for scientific and industrial applications and as a front end of FEL test facility under consideration at Daresbury [2]. It is based on a RF photoinjector which delivers a ~6 MeV beam. The photoinjector design in the first phase consists of a 2.5 cell S-band RF gun to be driven by Ti:Sapphire laser. The design is aimed to deliver bunches at 10-250 pC charge with low transverse emittances and ultrashort lengths. The beam transport optics design described in this paper includes a dedicated diagnostics section capable of characterising ultra short and ultra low emittance bunches and beam transport lines to two user areas.