A preparation system for potassium cesium antimonide photocathode

LI Xudong1; 2 CHEN Liping1 GU Qiang1 LIN Guoqiang1 ZHAO Minghua1 1

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A preparation system for potassium cesium antimonide photocathode

更新时间：2021-03-05

- A preparation system for potassium cesium antimonide photocathode
- NUCLEAR TECHNIQUES Vol. 35, Issue 7, (2012)
- 作者机构：
  
  1. 中国科学院上海应用物理研究所
  2. 中国科学院研究生院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TL503.3
- Published：01 July 2012
- 稿件说明：
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[1]李旭东,陈丽萍,顾强,林国强,赵明华.锑钾铯光阴极制备系统[J].核技术,2012,35(07):486-490.

LI Xudong1, 2 CHEN Liping1 GU Qiang1 LIN Guoqiang1 ZHAO Minghua1 1. A preparation system for potassium cesium antimonide photocathode[J]. Nuclear techniques, 2012, 35(7): 486-490.
[1]李旭东,陈丽萍,顾强,林国强,赵明华.锑钾铯光阴极制备系统[J].核技术,2012,35(07):486-490. DOI：

LI Xudong1, 2 CHEN Liping1 GU Qiang1 LIN Guoqiang1 ZHAO Minghua1 1. A preparation system for potassium cesium antimonide photocathode[J]. Nuclear techniques, 2012, 35(7): 486-490. DOI：

摘要

双碱金属锑化物光阴极在可见光下有高量子效率（QE）、低发射度和强射（RF）频电场

实用真空下寿命较长

产生的高亮度电子束团满足能量回收型直线加速器要求。此类光阴极都含有元素Cs

需在超高真空（UHV）下制备、转移及工作。本文简述了SINAP的双碱金属锑化物光阴极制备装置及各种仪器功能

提出了UHV获得、光阴极基底清洗和K-Cs-Sb光阴极制备过程的方案。通过实验测量了K-Cs-Sb光阴极QE与激光入射功率密度和波长的关系

并构想了基于此制备装置的K-Cs-Sb光阴极的其它性能测试实验。

Abstract

A bialkali antimonide photocathode is of high quantum efficiency(QE) for visible lights

low emittance

and relatively long life time in the strong RF field and practical vacuum.It produces high-brightness electron beams to meet the energy recovery need of a linac.This kind of photocathode contains cesium

hence the need of preparing

transferring and operating it in ultra high vacuum(UHV).In this paper

we report the design of a bialkali antimonide photocathode preparation apparatus developed at SINAP.Functions of the equipment are described.The UHV pumping

the photocathode substrate cleaning and preparation the K-Cs-Sb photocathode are presented in detail.The QE is measured under different laser power densities and wavelengths.Other testing experiments for performance of the K-Cs-Sb photocathode prepared with this apparatus are conceived.

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Related Institution

Shanghai Institute of Applied Physics, Chinese Academy of Sciences

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