Investigation on Plasma Based High Energy Proton Acceleration

基于等离子体的高能质子加速研究

基本信息

批准号：
12480114
负责人：
NISHIDA Yasushi
金额：
$ 10.56万
依托单位：
Utsunomiya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2001
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12480114/
关键词：
Proton Accelerator Wakefield Acceleration V_P x B Acceleration IH Linac Proton Source イオン源 IH加速器 V_2×B加速航跡場加速

项目摘要

The goal of this project is to develop a proton accelerator utilizing an interaction of a plasma with a high intensity, ultrashort laser pulse, which is expected to be more compact than the conventional accelerators. We have proposed two proton acceleration methods. The possibility of proton acceleration due to both the V_P x B and the wakefield has been confirmed by performing numerical simulations. Although the energy increment per stage is not large, the acceleration gradient is several hundred times larger than that in the conventional rf acceleration scheme. There seems to be some room for making improvements including new acceleration schemes. More detailed discussions are required for further improvement of the acceleration efficiency. We are going to develop a proton source with an output energy as high as 1 MeV for the proof-of-principle experiments of the proton acceleration methods. Development of the proton source with the energy 30 keV was finished so far. In order to accelerate protons with energy 30 keV extracted from the proton source up to 1 MeV, we are under designing IH (Interdigital H-mode) linear accelerator as the injector to the final stage of the accelerator which uses laser and plasma. At present, we are considering the design parameters including the cavity structure by using computer simulations, such as MAFIA. We plan to make prototype accelerator after finishing the design of the IH accelerator cavity.

该项目的目标是开发一种利用等离子体与高强度超短激光脉冲相互作用的质子加速器，预计该加速器比传统加速器更紧凑。我们提出了两种质子加速方法。由于 V_P x B 和尾场导致质子加速的可能性已通过数值模拟得到证实。虽然每级能量增量不大，但加速梯度比传统射频加速方案大数百倍。似乎还有一些改进的空间，包括新的加速方案。加速效率的进一步提高还需要更详细的讨论。我们将开发一种输出能量高达1 MeV的质子源，用于质子加速方法的原理验证实验。目前已完成能量30keV质子源的研制。为了将从质子源提取的能量为 30 keV 的质子加速到 1 MeV，我们正在设计 IH（叉指 H 模式）线性加速器，作为使用激光和等离子体的加速器末级的注入器。目前，我们正在利用MAFIA等计算机模拟来考虑包括腔体结构在内的设计参数。我们计划在IH加速器腔体设计完成后制作原型加速器。