Irradiation tests of radiation resistance optical fibers for fusion diagnostic application

Tsunemi Kakuta; Tatsuo Shikama; Takeo Nishitani; Shin Yamamoto; Shinji Nagata; Bun Tsuchiya; Kentaro Toh; Junichi Hori

doi:10.1117/12.451742

26 November 2002 Irradiation tests of radiation resistance optical fibers for fusion diagnostic application

Tsunemi Kakuta, Tatsuo Shikama, Takeo Nishitani, Shin Yamamoto, Shinji Nagata, Bun Tsuchiya, Kentaro Toh, Junichi Hori

Proceedings Volume 4786, Penetrating Radiation Systems and Applications IV; (2002) https://doi.org/10.1117/12.451742
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

To promote development of radiation-resistant core optical fibers, the ITER-EDA (International Thermonuclear Experimental Reactor-Engineering Design Activity) recommended carrying out international round-robin irradiation tests of optical fibers to establish a reliable database for their applications in the ITER plasma diagnostics. Ten developed optical fibers were irradiation-tested in a Co-60 gamma cell, a Japan Materials Testing Reactor (JMTR). Also, some of them were irradiation tested in a fast neutron irradiation facility of FNS (Fast Neutron Source), especially to study temperature dependence of neutron-associated irradiation effects. Included were several Japanese fluorine doped fibers and one Japanese standard fiber (purified and undoped silica core), as well as seven Russian fibers. Some of Russian fibers were drawn by Japanese manufactures from Russian made pre-form rods to study effects of manufacturing processes to radiation resistant properties. The present paper will describe behaviors of growth of radiation-induced optical transmission loss in the wavelength range of 350-1750nm. Results indicate that role of displacement damages by fast neutrons are very important in introducing permanent optical transmission loss. Spectra of optical transmission loss in visible range will depend on irradiation temperatures and material parameters of optical fibers.

Citation Download Citation

Tsunemi Kakuta, Tatsuo Shikama, Takeo Nishitani, Shin Yamamoto, Shinji Nagata, Bun Tsuchiya, Kentaro Toh, and Junichi Hori "Irradiation tests of radiation resistance optical fibers for fusion diagnostic application", Proc. SPIE 4786, Penetrating Radiation Systems and Applications IV, (26 November 2002); https://doi.org/10.1117/12.451742

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available