Author :
Lau, W.K. ; Chan, B.J. ; Chang, L.H. ; Chen, C.W. ; Chen, H.Y. ; Hsu, S.Y. ; Hsu, K.T. ; Hwang, J.Y. ; Wang, Y.C. ; Yang, T.T.
Abstract :
A microwave electron gun system is being constructed to evaluate the feasibility of using such system as the electron source for the linac pre-injector in storage ring synchrotron radiation sources and for novel linac-based light source R&D at NSRRC. A 2856 MHz SSRL-type microwave gun cavity has been fabricated in house for this purpose. Properties of the cavity resonant modes have been characterized as a function of side-coupled cell plunger position. Special tuning plunger design for this cell allows re-adjustment of field ratio even after brazing. Field amplitude ratio of the cavity full cell to half cell has now been tuned to 2:1. That is the optimized ratio for low energy bunch compression by an alpha magnet.
