| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1828607 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2008 | 5 Pages |
Abstract
Several BNL/KEK/SHI type photocathode RF guns have been fabricated for high-quality electron beams in Accelerator Laboratory of Tsinghua University. This paper describes how the characteristics of a waveguide post can be chosen to correct for a mismatch in power coupling without affecting the pi-mode resonant frequency and the balance of fields between the two cells. Microwave circuit theories are used to analyze how to select the proper location and depth of the waveguide post. The tolerance on the post positioning is evaluated based on gun field quality requirements. MAFIA simulations and RF experiments have been done to confirm the theoretical analysis.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
Houjun Qian, Chuanxiang Tang, Shuxin Zheng, Dechun Tong, Huaibi Chen, Wenhui Huang, Xin Guan,