15–17 Oct 2018
Hilton-Buffalo Thunder
US/Mountain timezone

Synthesis and x-ray characterization of Cesium Telluride photocathodes

16 Oct 2018, 08:45
25m
Pueblo Conference Room A (Hilton-Buffalo Thunder)

Pueblo Conference Room A

Hilton-Buffalo Thunder

20 Buffalo Thunder Trail Santa Fe, NM, USA 87506
Session 5: Application Oriented Research: High Average Current Session 5

Speaker

Dr Mengjia Gaowei (Brookhaven National Laboratory)

Description

Cesium telluride (CsTe) photocathodes has been the first hand choice for electron sources by worldwide accelerators, due to its high quantum yield, stable performance at complicated operation environment and long lifetime. In this work we compared the results of in situ x-ray characterization of the traditional sequential and co-evaporation growth of CsTe photocathodes. We were able to achieve ~2nm surface roughness, high crystallinity and a quantum efficacy of 18 % at 266 nm wavelength.

Presentation materials