Electron Trajectories and Gains in FEL with an Axial Guide Field

概要

論文の詳細を見る
Electron trajectories and small signal gains have been evaluated for a FEL with aconstant wiggler and strong axial guide field. Two different injections into the wigglerare considered in this paper. The first case is that the electron beam is injected into anideal helical orbit. In the second case, the electrons are injected parallel to the axialguide field. At the Doppler upshifted wiggler frequency the magnitudes of gain forthe two types of injection tend to become identical. At the upshifted Larmor fre-quency the FEL gain is feasible. In the case of axial injection, small gains at frequen-cies higher than those obtained with perfect beam injection are also found possible.Effects of space charge, including enhancement in gain are discussed.
社団法人日本物理学会の論文
1991-09-15