1–6 Jun 2025
Taipei International Convention Center (TICC)
Asia/Taipei timezone

Study of Cherenkov diffraction radiation from radiator with periodic structure in THz-region

THPM090
5 Jun 2025, 15:30
2h
Exhibiton Hall A _Magpie (TWTC)

Exhibiton Hall A _Magpie

TWTC

Poster Presentation MC6.T03 Beam Diagnostics and Instrumentation Thursday Poster Session

Speaker

Ken-ichi Nanbu (Tohoku University)

Description

We have studied classical radiation from relativistic electrons at a facility, test accelerator as a coherent terahertz source (t-ACTS), the Research Center for Accelerator and Radioisotope Science (RARiS), Tohoku University. Cherenkov radiation is generated when a relativistic charged particle passes through a dielectric medium, while Cherenkov diffraction radiation (ChDR) is emitted when the relativistic charged particle passes near the dielectric medium. In general, the ChDR spectrum is broadband. However, when a periodic structure is used as a radiator, interference effects can monochromatize the ChDR. At t-ACTS, a proof-of-principle experiment in the THz region was conducted using a high-density polyethylene (HDPE) radiator with a periodic structure. We successfully measured ChDR from radiator with periodic structure and achieved narrowband ChDR (NbChDR) in the THz region. This paper will discuss the characteristics of NbChDR in the THz region, as observed at t-ACTS.

Funding Agency

JSPS KAKENHI Grant Number 22K12660

Region represented Asia
Paper preparation format Word

Author

Ken-ichi Nanbu (Tohoku University)

Co-authors

Fujio Hinode (Tohoku University) Hiroyuki Hama (Tohoku University) Ikurou Nagasawa (Tohoku University) Ken Takahashi (Tohoku University) Kotaro Shibata (Tohoku University) Pitchayapak Kitisri (Tohoku University) Shigeru Kashiwagi (Research Center for Accelerator and Radioisotope Science) Toshiya Muto (Tohoku University) Kodai Kudo (Tohoku University) Anjali Kavar (Tohoku University) Hiroki Yamada (Tohoku University)

Presentation materials

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