Grigori M. Kazakevitch(a), Stanislav S. Serednyakov(a), Nikolai A. Vinokurov(a), Young Uk Jeong(b), Byung Cheol Lee(b), and Jongmin Lee(b)
(a)Budker Institute of Nuclear Physics, Academician Lavrentyev 11, Novosibirsk, 630090, Russia, (b)Lab. for Quantum Optics, Korea Atomic Energy Research Institute, P.O.Box105, Yusong, Taejon, Korea
Longitudinal bunching properties of the classical microtron have been investigated by numerical simulation of longitudinal motion of accelerated electrons. The simulations were performed for the 12-turn microtron that has been used as an injector for the KAERI far infrared free electron laser. The deviation of the bunch repetition rate that was measured by the heterodyne method in real operating conditions and the measured dispersion properties of the microtron accelerating cavity were taken into account. With the calculated bunching properties the power of the coherent undulator radiation from the free electron laser was estimated. The calculation results were compared with the experimental data.