Improvement of an S-band RF gun with a Cs2Te photocathode for the KEK-ATF
Improvement of an S-band RF gun with a Cs2Te photocathode for the KEK-ATF
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DOI：
10.1016/j.nima.2009.10.151
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发表时间：
2010-01
影响因子：
1.4
通讯作者：
N. Terunuma;A. Murata;M. Fukuda;K. Hirano;Y. Kamiya;T. Kii;M. Kuriki;R. Kuroda;H. Ohgaki;K. Sakaue;M. Takano;T. Takatomi;J. Urakawa;M. Washio;Y. Yamazaki;Jinfeng Yang
中科院分区：
文献类型：
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作者：
N. Terunuma;A. Murata;M. Fukuda;K. Hirano;Y. Kamiya;T. Kii;M. Kuriki;R. Kuroda;H. Ohgaki;K. Sakaue;M. Takano;T. Takatomi;J. Urakawa;M. Washio;Y. Yamazaki;Jinfeng Yang
自2002年以来，KEK一直在开发一种带有Cs2Te光电阴极的激光驱动射频枪，这是一种仿照BNL-IV射频枪的装置。该电子枪已被用作加速器测试设施(ATF)的电子源，并产生每束高达3.2nC的束流。基于ATF的成功结果，这种枪已经在大学的新研究中应用了几次。从2002年起，不断改进的射频枪已被纳入较新的型号。最近的一次是在2008年，为ATF生产了一种新的枪支，它包含了所有以前的改进。测试证实，最新型号的Q值有了显着的改善。在螺线管场为0.18T，束流强度为1.6nC/束，射频功率为9 mW的条件下，获得了1.3mmrad的典型横向发射度。这种配备了Cs2Te光电阴极的射频枪正用于ATF的高级研究计划。最近完成了对其业绩的调查。
A laser-driven RF gun with a Cs2Te photocathode, a device modeled after the BNL-IV RF gun, has been in development at KEK since 2002. This gun has been operated as an electron source for the Accelerator Test Facility (ATF) and generates a beam with an operational intensity of up to 3.2nC per bunch. Based on successful results at the ATF, this gun has been applied several times for new research at universities. From 2002 onwards, successive improvements have been incorporated into newer models of the RF gun. Most recently, in 2008, a new gun incorporating all of the earlier modifications was produced for the ATF. Tests have confirmed a significant improvement of the Q-value of the latest model. A typical transverse emittance of 1.3 πmmmrad has been obtained under the following conditions: solenoid field of 0.18T, beam intensity of 1.6nC per bunch, and RF power of 9MW. This RF gun equipped with the Cs2Te photocathode is being used for the advanced research programs at the ATF. A survey of its performance has recently been completed.