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Development of V_p×B Electron Linear Accelerator utilizing Transverse Electromagnetic Wave

利用横向电磁波的V_p×B电子直线加速器的研制

基本信息

批准号：
10358008
负责人：
NISHIDA Yasushi
金额：
$ 20.86万
依托单位：
Utsunomiya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A).
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 2000
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10358008/
关键词：
V_p×B Acceleration Compact Electon Linac V_p×B Electron Linac IH Proton Linac Proton Source V_P×B加速 V_P×B電子加速器電磁的横波イオン加速プロトン加速 PIG 線形加速器プラズマ加速器 Vp×B線形加速器イオン源横波小型陽子加速器 RFQ

项目摘要

The goal of this project is to develop a more compact electron linear accelerator with V_p×B acceleration scheme utilizing X-band microwave (9 GHz). We need to design a slow-wave structure for X-band V_p×B accelerator. We heve made the prototype slow-wave structure by using approximate equations, because no design method of it was found, to our best knowlege. It has been confirmed experimentally that the V_p×B electron linac has the better acceleration rate in the X-band microwave range, though the experiments have not been performed perfectly. Thus, a possibility of more compact electron linac has been shown. Because the high power microwave source for the accelerator has broken down at the beginning of this year, we have not completed our goal. The transmission rate of the X-band microwave through the accelerator is too small to obtain large increment of energy gain estimated from the microwave power 250 kW, because of the disagreement of the resonance frequency between the mode converter and the slow-wave structure. At present, a new slow-wave structure together with the mode converter is underway.In addition, we have developed a proton source (〜30 keV) for the study of a new compact proton accelerator. In order to accelerate protons with energy 30 keV extracted from the proton source up to 1 MeV, we have been designing IH(Interdigital H) linear accelerator as the injector to the final stage of the accelerator using laser and plasma. We plan to make prototype after finishing the design of the accelerator cavity.

本项目的目标是研制一台体积更小的X波段微波（9 GHz）电子直线加速器，采用V_p × B加速方案。X波段V_p × B加速器需要设计一种慢波结构。由于目前还没有找到设计方法，我们用近似方程制作了慢波结构的原型。实验证实，在X波段微波范围内，V_p × B电子直线加速器具有较好的加速率，尽管实验还不完善。因此，一个更紧凑的电子直线加速器的可能性已被证明。因为加速器的高功率微波源在今年年初坏了，我们没有完成我们的目标。由于模式转换器和慢波结构之间的谐振频率不一致，X波段微波通过加速器的传输率太小，无法获得从微波功率250 kW估算的大的能量增益增量。目前，一种新型的慢波结构和模式转换器正在研制中，另外，我们还研制了一台质子源（1030 keV），用于研究一种新型的紧凑型质子加速器。为了将从质子源中提取的能量为30 keV的质子加速到1 MeV，我们一直在设计IH（Interdigital H）直线加速器作为使用激光和等离子体的加速器末级的注入器。我们计划在完成加速器腔体的设计后制作样机。