Development of Synchronized Injection Gun for Laser Beat-wave Acceleration

激光拍波加速同步注射枪的研制

• 批准号: 07558179
• 负责人: KITAGAWA Yoneyoshi
• 金额: $ 0.7万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07558179/
• 关键词: Laser beat-wave acceleration; Electron beam; Synchronized injection; Electron spectrometer; Photocathode; 炭酸ガスレーザー; ビ-ト波加速; 電子ビーム入射

The purpose of this project is to develop the electron beam source, synchronized to the laser beat-wave. To realize a laser particle accelerator, we must put the injected electrons on the acceleration phase of the excited plasma wave potential. So that we have tried to emit electrons from a laser triggered photocathode. The laser will easily control the emission timing of the electrons, so as to put them on any phase of the wave potential. We have developed sequentially two electron sources, the first one without the laser photocathode and the second one with it.In the first year (1995), we have modified the Marx generator for the CO_2 laser electron gun to provide 1MeV electron beams. By controlling the cathode impedance, we have obtained more than 1MeV electron beams. Also we have for the first time calibrated a 20MeV electron spectrometer (ESM) by using the 20 MeV linear accelerator.In the second year (1996), we have developed the electron gun with a laser triggered photocathode. The Pulse power machine is a coaxial Marx generator and the maximum charging is 1 MV.We have obtained 1MeV electrons. Now we are providing to trigger the photo diode by using a YAG laser second harmonic pulse.

本计画的目的是研制与雷射拍频波同步的电子束源。为了实现激光粒子加速器，必须将注入的电子置于激发等离子体波势的加速相。所以我们尝试从激光触发的光电阴极发射电子。激光将很容易地控制电子的发射时间，以便将它们置于波势的任何相位上。我们先后研制了两种电子源，第一种不带激光光阴极，第二种带激光光阴极，第一年（1995年）我们改进了CO_2激光电子枪的马克思发生器，使之能提供1MeV的电子束。通过控制阴极阻抗，获得了1MeV以上的电子束。第二年（1996年），我们研制了激光触发光阴极电子枪。脉冲功率机为同轴马克思发生器，最大充电量为1MV，获得了1MeV的电子。现在我们提供通过使用YAG激光二次谐波脉冲来触发光电二极管。

项目成果

北川米喜: "光量子科学の誕生と未来像第7章2.2" 光量子の高度利用に関する懇談会, 493 (1996)

米木北川：“光子量子科学的诞生和未来愿景第 7 章 2.2”光子高级利用会议，493 (1996)

北川米喜: "PUR Measurement Imploded Cryogenic Foam Target by DD protons" Proc.AIP. CP369. 136-143 (1996)

Yoneki Kitakawa：“通过 DD 质子测量内爆低温泡沫目标”Proc.AIP 136-143 (1996)。

三間圀興: "Recent pregress of laser fusion research with Gekko lasers at ILE,Osaka" Proceedings of the 16th IAEA Fusion Energy Conference. (発表予定). (1997)

Kuniyuki Mima：“大阪 ILE 的 Gekko 激光器激光聚变研究的最新进展”第 16 届 IAEA 聚变能源会议记录（待提交）。

北川米喜: "SAR measurement of inploded ceyogenic foam target by D-D-protons" Prereedings of Laser interaction and delated plasma phenomena (AIP pren). CP369. 136-143 (1996)

Yoneki Kitakawa：“D-D-质子对内爆的青原泡沫目标的 SAR 测量”激光相互作用和延迟等离子体现象的预录（AIP pren）136-143（1996）。

北川米喜: "Energy from Inestial Fusion:43章(Hogan編)" IAEA,W.J., 457 (1995)

北川米树：“Inestial Fusion 的能量：第 43 章（由 Hogan 编辑）” IAEA，W.J.，457 (1995)