Study on high intensity of terahertz-wave by pulse stacking

• Project/Area Number: 16K17539
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Quantum beam science
• Research Institution: Nihon University
• Principal Investigator: SAKAI Takeshi 日本大学, 理工学部, 助手 (20409147)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000); Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 高強度テラヘルツ波光源 / コヒーレント遷移放射 / コヒーレントエッジ放射 / コヒーレントシンクロトロン放射 / 電子線形加速器 / コヒーレントX線 / 自由電子レーザー / 高強度テラヘルツ波 / 加速器 / パラメトリックX線

Outline of Final Research Achievements

Development of terahertz (THz) wave source has been underway at Nihon University. The THz wave transport lines has been constructed on the same axis as the X-ray and FEL beam line. The average intensity of the THz coherent transition radiation (CTR) wave obtained at the output port in the accelerator room has been 1 mJ/macro-pulse (pulse width 4.5 us). The superposition transport system of the THz waves to the X-ray beam-line was installed in a multi-purpose vacuum chamber. Additionally, the energy of the coherent edge radiation (CER) as high as 0.2 mJ/macro-pulse were achieved with the experimental room. Although an optical system using a vacuum chamber is necessary, if the influence due to the absorption of water vapor is ignored, it is expected that the intensity of the THz wave would up to several-mJ as the electron beam power output increases. These THz waves has been used for user experiments for the imaging in addition to measurement of the spectrum.

Research Products

• [Journal Article] Millijoule terahertz coherent transition radiation at LEBRA (2017)
  • Author(s): Norihiro Sei, Hiroshi Ogawa, Takeshi Sakai, Ken Hayakawa, Toshinari Tanaka, Yasushi Hayakawa, Kyoko Nogami
  • Journal Title: Japanese Journal of Applied Physics Volume: 56 Issue: 3 Pages: 032401-032401
  • DOI: 10.7567/jjap.56.032401
  • NAID: 210000147466
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Development of the High Power Terahertz Light Sources at LEBRA Linac in Nihon University (2017)
  • Author(s): T. Sakai, K. Hayakawa, Y. Hayakawa, K. Nogami, T. Tanaka, H. Ogawa, N. Sei
  • Journal Title: Proceedings of the 8th International Particle Accelerator Conference Volume: 1 Pages: 1437-1439
  • DOI: 10.18429/JACoW-IPAC2017-TUPAB049
  • Open Access
• [Journal Article] Measurement of Electron-Bunch Length Using Coherent Radiation in Infrared Free-Electron Laser Facilities (2017)
  • Author(s): N. Sei, H. Ogawa, K. Hayakawa, Y. Hayakawa, K. Nogami, T. Sakai, T. Tanaka, H. Ohgaki, H. Zen
  • Journal Title: Proceedings of the 8th International Particle Accelerator Conference Volume: 1 Pages: 288-291
  • DOI: 10.18429/JACoW-IPAC2017-MOPAB073
  • Open Access
• [Journal Article] Project of the superposing beamline for parametric X-ray radiation and coherent transition radiation in THz region at LEBRA (2016)
  • Author(s): Y Hayakawa, K Hayakawa, M Inagaki, T Kaneda, K Nakao, K Nogami, T Sakae, T Sakai, N Sei, Y Takahashi, T Tanaka
  • Journal Title: Journal of Physics: Conference Series Volume: 732 Pages: 012013-012013
  • DOI: 10.1088/1742-6596/732/1/012013
  • Peer Reviewed / Open Access
• [Presentation] Project of an intense terahertz-wave source based on coherent Cherenkov radiation matched to circle plane wave (2018)
  • Author(s): N. Sei, T. Sakai, T. Tanaka, Y. Hayakawa, Y. Sumitomo, Y. Takahashi, K. Hayakawa, K. Nogami
  • Organizer: 43rd International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW THz-2018)
  • Int'l Joint Research
• [Presentation] High Power Coherent Terahertz Wave Sources at LEBRA Linac in Nihon University (2018)
  • Author(s): T. Sakai, N. Sei, T Tanaka, Y. Hayakawa, Y. Sumitomo, K. Hayakawa, K. Nogami and H. Ogawa
  • Organizer: 43rd International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW THz-2018)
  • Int'l Joint Research
• [Presentation] Development and Application of Terahertz Sources at LEBRA Linac in Nihon University (2018)
  • Author(s): T. Sakai, N. Sei, T. Tanaka, Y. Hayakawa, Y. Sumitomo, K. Nogami, K. Hayakawa and H. Ogawa
  • Organizer: 日本物理学会第73回年次大会
• [Presentation] Study of coherent edge radiation for the measurement of the bunch length in an electron bunch (2018)
  • Author(s): N. Sei, H. Ogawa, T. Tanaka, Y. Hayakawa, T. Sakai, Y. Sumitomo, Y. Takahashi, K, Hayakawa, K. Nogami, H. Zen, H. Ohgaki
  • Organizer: 日本物理学会第73回年次大会
• [Presentation] 日本大学電子線利用研究施設における高強度テラヘルツ光源開発 (2018)
  • Author(s): 境武志、田中俊成、早川恭史、住友洋介、早川建、髙橋由美子、野上杏子、清紀弘、小川博嗣
  • Organizer: 第31回放射光学会、放射光科学合同シンポジウム
• [Presentation] 赤外自由電子レーザー施設におけるコヒーレント放射を用いた電子ミクロパルスのバンチ長の観測 (2018)
  • Author(s): 清紀弘、小川博嗣、全炳俊、大垣英明、田中俊成、早川恭史、境武志、住友洋介、髙橋由美子、早川建、野上杏子
  • Organizer: 第31回放射光学会、放射光科学合同シンポジウム
• [Presentation] 日本大学LEBRAにおけるテラヘルツ波光源の研究開発 (2017)
  • Author(s): 境武志，田中俊成，早川恭史，早川建，野上杏子，清紀弘，小川博嗣
  • Organizer: 日本物理学会第72回年次大会
  • Place of Presentation: 大阪大学豊中キャンパス, 大阪府吹田市
  • Year and Date: 2017-03-17
• [Presentation] 日本大学LEBRA電子線形加速器を用いたテラヘルツ波光源の研究開発 (2017)
  • Author(s): 境武志，田中俊成，早川恭史，早川建，野上杏子，清紀弘，小川博嗣
  • Organizer: 第30回日本放射光学会年会・放射光科学合同シンポジウム
  • Place of Presentation: 神戸芸術センター, 兵庫県神戸市
  • Year and Date: 2017-01-07
• [Presentation] 日本大学電子線利用研究施設(LEBRA)の現状 (2017)
  • Author(s): 早川恭史，境武志
  • Organizer: 第30回日本放射光学会年会・放射光科学合同シンポジウム
  • Place of Presentation: 神戸芸術センター, 兵庫県神戸市
  • Year and Date: 2017-01-07
• [Presentation] 赤外自由電子レーザー施設におけるコヒーレント放射を用いた電子バンチ長評価の研究 (2017)
  • Author(s): 清紀弘，小川博嗣，田中俊成，早川恭史，境武志，早川建，野上杏子，全炳俊，大垣英明
  • Organizer: 第30回日本放射光学会年会・放射光科学合同シンポジウム
  • Place of Presentation: 神戸芸術センター, 兵庫県神戸市
  • Year and Date: 2017-01-07
• [Presentation] Measurement of Electron-bunch Length Using Coherent Radiation in Infrared Free-electron Laser Facilities (2017)
  • Author(s): N. Sei, H. Ogawa, T. Tanaka, Y. Hayakawa, T. Sakai, K. Hayakawa, K. Nogami, H. Ohgaki, H. Zen
  • Organizer: 8th International Particle Accelerator Conference（IPAC2017）
  • Int'l Joint Research
• [Presentation] Development of the High Power Terahertz Light Sources at LEBRA Linac in Nihon University (2017)
  • Author(s): T. Sakai, T. Tanaka, Y. Hayakawa, K. Hayakawa, K. Nogami, N. Sei, H. Ogawa
  • Organizer: 8th International Particle Accelerator Conference（IPAC2017）
  • Int'l Joint Research
• [Presentation] Research and development of the high power THz light sources at LEBRA in Nihon University (2017)
  • Author(s): Takeshi Sakai, Toshinari Tanaka, Yasushi Hayakawa, Yoske Sumitomo, Ken Hayakawa, Kyoko Nogami, Norihiro Sei, Hiroshi Ogawa
  • Organizer: 第14回日本加速器学会年会
• [Presentation] Status of electron linac and light source at LEBRA in Nihon University (2017)
  • Author(s): Kyoko Nogami, Ken Hayakawa, Toshinari Tanaka, Yasushi Hayakawa, Takeshi Sakai, Yoske Sumitomo, Isamu Sato, Norihiro Sei, Hiroshi Ogawa, Atsushi Enomoto, Satoshi Ohsawa, Shigeki Fukuda, Tetsuo Shidara, Kazuro Furukawa, Shinichiro Michizono, Kimichika Tsuchiya, Mitsuhiro Yoshida, Takakazu Shintomi, Shigeru Yamamoto
  • Organizer: 第14回日本加速器学会年会
• [Presentation] Research and Development of Terahertz Sources at LEBRA in Nihon University (2017)
  • Author(s): T. Sakai, N. Sei, T. Tanaka, Y. Hayakawa, Y. Sumitomo, K. Nogami, K. Hayakawa and H. Ogawa
  • Organizer: 日本物理学会第72回年次大会
• [Presentation] 日本大学LEBRA電子線形加速器を用いたテラヘルツ波光源の研究開発 (2017)
  • Author(s): 境 武志、田中 俊成、早川 恭史、早川 建、野上 杏子、清 紀弘、小川 博嗣
  • Organizer: 第30回放射光学会年会・放射光科学合同シンポジウム
• [Presentation] 赤外自由電子レーザー施設におけるコヒーレント放射を用いた電子バンチ長評価の研究 (2017)
  • Author(s): 清 紀弘、小川 博嗣、田中俊成、早川恭史、境武志、早川建、野上杏子
  • Organizer: 第30回放射光学会年会・放射光科学合同シンポジウム
• [Presentation] 日大LEBRA-PXRビームラインにおけるTHz波-X線ビーム重畳システムの開発 (2016)
  • Author(s): 早川 恭史，早川 建，中尾 圭佐，野上 杏子，境 武志，清 紀弘，田中 俊成
  • Organizer: 第13回加速器学会
  • Place of Presentation: 幕張メッセ、千葉県千葉市
  • Year and Date: 2016-08-08