Design Considerations for Low Field Short Phot-Injected RF Electron Gun with High Charge Electron Bunch.

Chang, X. ; Ben-Zvi, I. ; Kewisch, J.

Technical Information Center Oak Ridge Tennessee

关键词: Accelerators;    Electron guns;    Linear accelerators;    Phase space;    Space charge;   

RP-ID  :  DE200415009927

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The RF field and space charge effect in a low field RF gun is given. The cell lengths are modified to have maximum accelerating efficiency. The modification introduces an extra RF field slice emittance. The phase space evolution of the following emittance compensation system is presented taking into account the chromatic effect. The emittance compensation mechanics for RF field and chromatic effect induced emittance is similar to that of compensating the space charge induced emittance. But the requirements are different to have best compensation for them. The beam waist is far in front of linac entrance to have best compensation for the RF field and chromatic effect induced emittance. For low field RF gun with high charge electron bunch this compensation is more important.