Numerical study of Cherenkov radiation from thin silica aerogel

H. Hama, K. Nanbu, H. Saito, Y. Saito

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Vavilov-Cherenkov radiation, usually just Cherenkov radiation (CR), is commonly used in high energy charged particle and cosmic rays detectors. We have studied CR emitted from very low refractive index material such as silica-aerogel and found it may be useful tool for electron beam diagnostics since the opening angle (Cherenkov angle) is small, then the CR can be transported onto a detector located far from the radiator. We have prepared a thin (1 mm thick) hydrophobic silica-aerogel having refractive index of 1.05 that has been developed at Chiba University. Since the intensity of CR is much stronger than that of optical transition radiation, the CR is a better light source for low intensity beam diagnostics. In order to apply the CR to measurement of bunch length of electron beams, we have investigated properties of CR by numerical simulation study based on the Liénard-Wiechert potentials. In addition, possibility of intense THz source is also discussed.

Original languageEnglish
Title of host publicationProceedings of the 38th International Free-Electron Laser Conference, FEL 2017
EditorsKip Bishofberger, Carlsten Bruce, Volker RW Schaa
PublisherJACoW Publishing
Pages479-481
Number of pages3
ISBN (Electronic)9783954501793
DOIs
Publication statusPublished - 2017 Jan 1
Event38th International Free-Electron Laser Conference, FEL 2017 - Santa Fe, United States
Duration: 2017 Aug 202017 Aug 25

Publication series

NameProceedings of the 38th International Free-Electron Laser Conference, FEL 2017

Conference

Conference38th International Free-Electron Laser Conference, FEL 2017
CountryUnited States
CitySanta Fe
Period17/8/2017/8/25

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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  • Cite this

    Hama, H., Nanbu, K., Saito, H., & Saito, Y. (2017). Numerical study of Cherenkov radiation from thin silica aerogel. In K. Bishofberger, C. Bruce, & V. RW. Schaa (Eds.), Proceedings of the 38th International Free-Electron Laser Conference, FEL 2017 (pp. 479-481). (Proceedings of the 38th International Free-Electron Laser Conference, FEL 2017). JACoW Publishing. https://doi.org/10.18429/JACoW-FEL2017-WEP027