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Thermionic cathode gridded electron gun for RF linacs

用于射频直线加速器的热离子阴极栅电子枪

基本信息

批准号：
2033785
负责人：
金额：
--
依托单位：
University of Strathclyde
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2017
资助国家：
英国
起止时间：
2017 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=studentship-2033785
关键词：
Thermionic cathode gridded electron gun

项目摘要

The next generation of security linacs will likely operate with shorter pulses and higher repetition frequencies to improve material separation, single photon counting or to enable backscattered X-rays to be employed. However no such commercial linac exists already, however by utilising RF design methodology and techniques employed in high gradient accelerators and utilising existing alternative RF sources such a linac could be realised. A crucial technology that will enable short pulse operation will be the incorporation of a gridded thermionic cathode electron gun to modulate the electron beam. This project aims to design and model a thermionic cathode gridded electron gun for the RF linac. The gridded electron gun design will be developed by the University of Strathclyde in collaboration with TMD Technologies Ltd who have a track record of providing similar electron beam sources for high power microwave amplifiers. The student will take a six month placement with TMDs Technologies Ltd, Hayes Middlesex to incorporate in the design knowledge and understanding of the grid structure to enable high duty cycle operation while minimising beam interception. TMD Technologies Ltd will also make available to the student expertise of high voltage power supplies and isolation needed to apply voltage to the grid to modulate the beam. In addition the student would be involved in upgrading and running the Cockcroft Institute's existing RF linac facility to test the latest X-ray detector developments and to understand the requirements of any new linacs.

下一代安全直线加速器可能会以更短的脉冲和更高的重复频率运行，以改善材料分离、单光子计数或启用反向散射 X 射线。然而，目前还没有这样的商业直线加速器存在，但是通过利用高梯度加速器中采用的射频设计方法和技术以及利用现有的替代射频源，可以实现这样的直线加速器。实现短脉冲操作的一项关键技术是采用栅格热离子阴极电子枪来调制电子束。该项目旨在为射频直线加速器设计和建模热电子阴极栅极电子枪。网格电子枪设计将由斯特拉斯克莱德大学与 TMD Technologies Ltd 合作开发，TMD Technologies Ltd 拥有为高功率微波放大器提供类似电子束源的记录。该学生将在 Hayes Middlesex 的 TMDs Technologies Ltd 实习六个月，融入设计知识和对网格结构的理解，以实现高占空比操作，同时最大限度地减少光束拦截。 TMD Technologies Ltd 还将向学生提供高压电源和向电网施加电压以调制光束所需的隔离方面的专业知识。此外，学生还将参与升级和运行科克罗夫特研究所现有的射频直线加速器设施，以测试最新的 X 射线探测器开发成果并了解任何新型直线加速器的要求。