Development of longitudinal phase space measurement system employing Cherenkov radiation

• Project/Area Number: 25790078
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Quantum beam science
• Research Institution: Tohoku University
• Principal Investigator: Nanbu Kenichi 東北大学, 電子光理学研究センター, 技術専門職員 (00422072)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: ビーム診断 / 縦方向位相空間測定 / チェレンコフ放射 / シングルショット縦方向位相空間測定 / チェレンコフ光 / シングルショット計測 / 縦方向位相空間 / チェレンコフ角

Outline of Final Research Achievements

An accelerator based light sources for intense coherent THz light requires the electron bunch length shorter than a few hundred femtosecond. In order to improve the performance of accelerator based light sources, it is indispensable to measure the electron distribution in longitudinal phase space for understanding the beam dynamics at the bunching section. In this study, the longitudinal phase space measurement system by Cherenkov light observation applying velocity dependence of opening angle has been developed. This developed system is composed of a special optical system and a Cherenkov radiator. The designed special optical system has sufficient resolution to measure the longitudinal phase space. The beam test of the Cherenkov radiator was performed at beam diagnosis section of t-ACTS. In addition, the clear Cherenkov ring was observed. This measurement system is a promising system for innovative beam diagnosis technology.

Research Products

• [Presentation] 縦方向位相空間測定のためのLFCカメラの開発（Ⅱ） (2016)
  • Author(s): 南部健一，日出富士雄，柏木茂，武藤俊哉，柴崎義信，長澤育郎，高橋健，東谷千比呂，齊藤寛峻，阿部太郎，濱広幸
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学泉キャンパス（宮城県仙台市）
  • Year and Date: 2016-03-19
• [Presentation] LFCカメラ用チェレンコフラジエータの評価 (2015)
  • Author(s): 南部健一, 柏木茂, 日出富士雄、武藤俊哉、長澤育郎、髙橋健、東谷千比呂、 小林恵理子、齊藤寛峻、阿部太郎、濱広幸
  • Organizer: 第12回日本加速器学会年会
  • Place of Presentation: プラザ萬象・あいあいプラザ（福井県敦賀市）
  • Year and Date: 2015-08-06
• [Presentation] 縦方向位相空間測定のためのLFCカメラの開発 (2015)
  • Author(s): 日出富士雄，南部健一，Anusorn Lueangaramwong，柏木茂，武藤俊哉，柴崎義信，高橋健，長澤育郎，東谷千比呂，永沢聡，齊藤寛峻，濱広幸
  • Organizer: 日本物理学会第70回年次大会
  • Place of Presentation: 早稲田大学（東京都）
  • Year and Date: 2015-03-22
• [Presentation] Diagnostic System for Longitudinal Phase Space Distribution of Low Energy Electron Beam Employing Silica Aerogel Cherenkov Radiator (2015)
  • Author(s): 高橋健，南部健一，Anusorn Lueangaramwong，日出富士雄，柏木茂，武藤俊哉，柴崎義信，長澤育郎，東谷千比呂，永沢聡，齊藤寛峻，濱広幸
  • Organizer: Korea-Japan Workshop in Accelerator Based Advanced Light Sources 2015
  • Place of Presentation: KAERI（韓国）
  • Year and Date: 2015-03-13
• [Presentation] Linear Focal Cherenkov-ring Camera for Single Shot Observation of Longitudinal Phase Space Distribution for Non-Relativistic Electron Beam (2014)
  • Author(s): K. Nanbu, K. Kashiwagi, H. Hinode, Y. Shibasaki, T. Muto, I. Nagasawa, S. Nagasawa, K. Takahashi, C. Tokoku, A. Lueangaramwong, H. Hama
  • Organizer: 国際ビーム計測会議2014
  • Place of Presentation: Portola Hotel & Spa at Monterey Bay（アメリカ）
  • Year and Date: 2014-09-16
• [Presentation] LFCカメラ用シリカエアロゲル輻射体の真空中での特性評価 (2014)
  • Author(s): 南部 健一，柏木 茂，日出 富士雄，柴崎 義信，長澤 育郎，高橋 健，東谷 千比呂，永沢 聡，Anusorn Lueangaramwong，武藤 俊哉，濱 広幸
  • Organizer: 第11回日本加速器学会年会
  • Place of Presentation: リンクステーションホール青森（青森市）
  • Year and Date: 2014-08-09
• [Presentation] Linear Focal Cherenkov-ring Camera for Direct Longitudinal Phase Space Measurements (2014)
  • Author(s): Anusorn Lueangaramwong, Fujio Hinode, Shigeru Kashiwagi, Toshiya Muto, Ikurou Nagasawa, Satoru Nagasawa, Ken'ichi Nanbu, Yoshinobu Shibasaki, Ken Takahashi, Kayoko Yanagi, Hiroyuki Hama
  • Organizer: 第11回日本加速器学会年会
  • Place of Presentation: リンクステーションホール青森（青森市）
  • Year and Date: 2014-08-09