MOP019
JLAB, Newport News, Virginia, USA
Great interest has been generated by the possibility of compact, high brilliance X-ray source based on inverse Compton scattering (ICS) since the rapid advancement in laser and accelerator technologies. While most superconducting (SC) linac designs have been aimed at large high energy facilities throughout the world, a compact and affordable SC linac that fits compact ICS source would be very attractive. MIT had proposed such concept, but the linac for electron acceleration after injector was not well defined then. JLab is developing the concept of a compact cryostat, which contains two elliptical, 400MHz, 3-cell cavities, to demonstrate the SRF technology for ICS applications. The linac is designed to accelerate an electron beam with a bunch charge of 5 pC at 200 MHz repetition rate, increasing the energy by 17 MeV. SC elliptical cavities at various frequencies, SC spoke cavity with β=1, and normal conducting (NC) cavities were compared in order to minimize the dynamic heat load. In this paper, the performance, capital and operational cost are compared among different options, and the choice of JLab is justified.
