Study of New Bunch Length Monitor Utilizing a Detection of Electromagnetic Fields in Millimeter-Wave Region

利用毫米波区域电磁场检测的新型束长度监测器的研究

• 批准号: 21604011
• 负责人: SUWADA Tsuyoshi
• 金额: $ 3.08万
• 依托单位: High Energy Accelerator Research Organization
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21604011/
• 关键词: 加速器; バンチ長計測; 量子ビーム; 粒子測定技術; ミリ波・マイクロ波計測; 電子・陽電子線形加速器; マイケルソン干渉計; ファブリーペロー干渉計; ファブリーペロー共振器

When a charged-particle beam passes through a gap of a vacuum pipe, an electromagnetic field of the beam is radiated into free space out of the vacuum pipe. The frequency spectrum of the radiation spreads over microwave to millimeter wave region depending on the bunch length of the beam. These radiation spectrum, intensity, and spatial distributions in free space have been numerically investigated in detail depending on the bunch length. Based on the systematic calculations, the fundamental parameters have been optimized in order to fabricate a prototype detector, which is based on a Fabry-Perot resonator type interferometer with a wide band(10-50 GHz) and high sensitivity. The detector was successfully calibrated and it could be confirmed to fully meet the bunch length measurement for a single-bunch electron beam delivered from the KEKB injector linac.

当带电粒子束穿过真空管的间隙时，该束的电磁场辐射到真空管外的自由空间中。辐射的频谱范围从微波到毫米波区域，具体取决于光束的束长。自由空间中的这些辐射光谱、强度和空间分布已根据束长度进行了详细的数值研究。在系统计算的基础上，对基本参数进行了优化，制作了基于宽频带（10-50 GHz）高灵敏度法布里-珀罗谐振腔型干涉仪的探测器样机。探测器已成功校准，并且可以确认其完全满足 KEKB 注入器直线加速器传输的单束电子束的束长度测量。

项目成果

Experimental study of new laser-based alignment system at the KEK B-factory injector linear accelerator

KEK B工厂喷射式直线加速器上新型激光对准系统的实验研究

• 发表时间: 2010
• 影响因子: 1.6
• 作者: T.Suwada; M.Satoh; E.Kadokura
• 通讯作者: E.Kadokura

LASER-BASED ALIGNMENT EXPERIMENT AT THE KEKB INJECTOR LINAC

KEKB 注射器直线加速器上的激光对准实验

• 发表时间: 2010
• 作者: T. Suwada; M. Satoh;E. Kadokura
• 通讯作者: E. Kadokura

Development of a New Bunch-Length Monitor for Detection of Electromagnetic Fields in Millimetre-Wave Region

开发用于毫米波区域电磁场检测的新型束长监测器

• 发表时间: 2009
• 作者: T. Suwada

KEK電子陽電子入射器におけるレーザーアライメントシステム

KEK 正负电子注入器的激光对准系统

• 发表时间: 2012
• 作者: 佐藤政則

EXPERIMENTAL STUDY ON NEW LASER-BASED ALIGNMENT SYSTEM UTILIZING A SEQUENTIAL THREE-POINT METHOD AT THE KEKB INJECTOR LINAC

KEKB 喷射器直线加速器上采用顺序三点法的新型激光对准系统的实验研究

• 发表时间: 2011
• 作者: T. Suwada; M. Staoh(KEK); S. Telada; K. Minoshima(AIST)
• 通讯作者: K. Minoshima(AIST)