Design and optimization of racetrack microtron for laser Compton scattered -ray sources

Hajima, Ryoichi; Ferdows, M.

Racetrack microtron (RTM) is a compact accelerator to obtain electron beams with an energy above 100 MeV. Conventional RTM's have been designed to accelerate a train of electron bunch from a thermionic electron gun, where the bunch charge is typically 10 pC. In the industrial application of laser Compton scattered -ray sources, RTM with 200-300 MeV electron energy will be a suitable device to produce 2-3 MeV -ray beams. Single electron bunch from a photocathode RF gun is accelerated and a high-charge small-emittance beam is preferable in such RTM. In this paper, we adopt a simulation code, GPT, for design and optimization of RTM in view of high-charge and small-emittance beam generation.