Investigation for FEL spectrum narrowing

FEL 光谱窄化研究

• 批准号: 02452278
• 负责人: IMASAKI Kazuo
• 金额: $ 4.29万
• 依托单位: Institute for Laser Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-02452278/
• 关键词: Free Electron Laser; Wiggler; Distributed Feed Back System; Resonator; Gain; 発振; 分布フィ-ドバック機構(DFB); スペクトルの狭帯域化; ミリ波; ウィグラ-; 断熱圧縮部; エミッタンス

High current electron beam was injected into a wiggler with distributed feed back system. FEL oscillation was observed. Narrowing of induced emission was obtained. The results are as follows.1) We obtained a superadiance of 600kW in 1mm wavelength the spectrum width was <plus-minus>20% in this cas2) Using the distributed feed back, the spectrum width was <plus-minus>5% and the results of experiment, were explained by the theor3) The gain we obtained was 30db/1.8m.We are summarizing the results to publish. Application experiments are planning such as high gradient acceleration.

强流电子束注入具有分布反馈系统的摇摆器。观察到自由电子激光振荡现象。获得了窄化的诱导发射。实验结果如下：1）在1 mm波长处获得了600 kW的超辐射，谱宽为<plus-minus>20%; 2）采用分布反馈，谱宽为<plus-minus>5%，理论上解释了实验结果; 3）获得了30 db/1.8m的增益，现将实验结果进行总结并发表。正在规划高梯度加速等应用实验.

项目成果

今崎 一夫: "Focusing permanent magnet undulator" Nuclear Instrument and Method. A304. 1492-1497 (1991)

Kazuo Imazaki：“聚焦永磁波荡器”核仪器和方法 1492-1497 (1991)。

今崎 一夫: "Multi frequency effects in an inverse FEL accelerator" Phys.Rev.43. 1492-1497 (1991)

Kazuo Imazaki：“反向 FEL 加速器中的多频效应”Phys.Rev.43 (1991)。

S. Kuruma.: "DFB Gas Loaded FEL by Induction Linac" Nuclear Instruments & Methods. A304. 93-98 (1991)

S. Kuruma.：“通过感应直线加速器加载 DFB 气体 FEL”核仪器

今崎 一夫: "逆自由電子レ-ザ-加速器の解析" The Review of Laser Engineering. 18. 823-833 (1990)

今崎一夫：“反向自由电子激光加速器的分析”激光工程评论18。823-833（1990）。

K. Imasaki,: "Higher Harmonics Generation in Modified Wiggler" Nuclear Instrument & Method (to be published). A. (1992)

K. Imasaki，：“改进的摆动器中的高次谐波产生”核仪器