First operation of cesium telluride photocathodes in the TTF injector RF gun
First operation of cesium telluride photocathodes in the TTF injector RF gun
复制标题
碲化铯光电阴极首次在 TTF 注入器射频枪中运行
DOI：
10.1016/s0168-9002(00)00095-4
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发表时间：
2000
影响因子：
1.4
通讯作者：
P. Michelato
中科院分区：
文献类型：
--
作者：
D. Sertore;S. Schreiber;K. Floettmann;F. Stephan;K. Zapfe;P. Michelato
在运行1998/1999年的一个新的注入器的基础上的激光驱动的RF枪被带到操作在TESLA测试设施（TTF）直线加速器在DESY，以产生的光束结构和质量所需的TeV对撞机和SASE自由电子激光实验。高量子效率碲化铯光电阴极，在米兰制备和转移到DESY，已成功地在射频枪运行。获得了50 nC的聚束电荷，仅受空间电荷效应的限制。光电阴极的工作寿命为几个月。一种新的阴极表面处理显示出有希望的降低光阴极暗电流。报道了暗电流、量子效率和寿命的测量结果。
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 50nC, 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.