First operation of cesium telluride photocathodes in the TTF injector RF gun

被引：44

作者：

Sertore, D

Schreiber, S

Floettmann, K

Stephan, F

Zapfe, K

Michelato, P

机构：

[1] Deutsch Elektron Synchrotron, FDET, D-22607 Hamburg, Germany

[2] DESY, D-2000 Hamburg, Germany

[3] INFN Milano, LASA, I-20090 Milan, Italy

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2000年 / 445卷 / 1-3期

关键词：

photocathode; RF gun; electron source; photoemission;

D O I：

10.1016/S0168-9002(00)00095-4

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

During the run 1998/1999 a new injector based on a laser-driven RF gun was brought in operation at the TESLA Test Facility (TTF) linac at DESY, in order to produce the beam structure and quality required either by TeV collider and SASE FEL experiments. High quantum efficiency cesium telluride photocathodes, prepared at Milano and transferred to DESY, have been successfully operated in the RF gun. A bunch charge of 50 nC, only limited by space charge effects, was achieved. The photocathodes have shown an operative lifetime of several months. A new cathode surface finishing has showed a promising decrease of the photocathode dark current. Measurements of dark current, quantum efficiency and lifetime are reported. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：422 / 426

页数：5

共 13 条

[1] Photoemission from K-Te photocathodes [J].