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.

当带电的粒子光束穿过真空管的间隙时，光束的电磁场被辐射到真空管中的自由空间中。辐射的频谱取决于光束的束长度，在微波炉到毫米波区域。这些辐射光谱，强度和自由空间中的空间分布已根据束长度进行详细研究。基于系统的计算，为了制造原型检测器，基于基本参数，该参数基于具有宽带（10-50 GHz）和高灵敏度的Fabry-Perot谐振型干涉仪。检测器已成功校准，可以确认可以完全满足从KEKB喷油器Linac传递的单束电子束的束长度测量。

项目成果

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;M.Satoh;T. Suwada and K. Furukawa;T. Suwada
• 通讯作者: T. Suwada

New Laser Alignment with Fresnel Lenses at the KEKB Injector Linac

KEKB 注射器直线加速器上采用菲涅尔透镜的新型激光对准

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

LASER-BASED ALIGHNMENT SYSTEM FOR THE 500-M-LONG KEK ELECTRON/POSITRON INJECTOR LINAC : DESIGN OF THE OPTICAL SYSTEM

用于 500 米长 KEK 电子/正电子注入器直线加速器的激光对准系统：光学系统的设计

• 发表时间: 2009
• 作者: 別所義隆;東島今日子;柴田理恵;西本まどか;倉光成紀;横山茂之;T. Suwada and M. Satoh
• 通讯作者: T. Suwada and M. Satoh

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)

LASER-BASED ALIGHNMENT SYSTEM FOR THE 500-M-LONG KEK ELECTRON/POSITRON INJECTOR LINAC

用于 500 米长 KEK 电子/正电子注入器直线加速器的激光对准系统

• 发表时间: 2009
• 作者: M. Satoh;T. Suwada;E. Kadokura;K. Furukawa(KEK);T. Kudou;S. Kusano;Y. Mizukawa;K. Hisazumi(Mitsubishi)
• 通讯作者: K. Hisazumi(Mitsubishi)