QE Measurements of a Nb-Pb Photoinjector.

Smedley, J. ; Strzyzewski, P. ; Warren, J. ; Rao, T. ; Kostin, D.

Technical Information Center Oak Ridge Tennessee

关键词: Beam dynamics;    Cathodes;    Niobium;    Cryogenics;    Energy recovery;   

RP-ID  :  DE2008910372

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

We report recent progress in the development of a hybrid lead niobium superconducting RF (SRF) photoinjector. The goal of this effort is to produce an injector with the SRF properties of a niobium cavity along with the superior quantum efficiency (QE) of a lead photocathode. A prototype hybrid injector, consisting of an all-niobium cavity arc-deposited with lead in the cathode region, has been constructed. We present the results of QE measurements on this cavity under RF field, and an arc-deposited cathode under DC bias at cryogenic temperatures.