Abstract

A Cerenkov signal is generated when energetic charged particles enter the core of an optical fiber. The Cerenkov intensity can be large enough to interfere with signals transmitted through the fiber. We determine the spectrum of the Cerenkov background signal generated in a poly(methyl methacrylate) optical fiber exposed to photon and electron therapeutic beams from a linear accelerator. This spectral measurement is relevant to discrimination of the signal from the background, as in scintillation dosimetry using optical fiber readouts. We find that the spectrum is approximated by the theoretical curve after correction for the wavelength dependent attenuation of the fiber. The spectrum does not depend significantly on the angle between the radiation beam and the axis of the fiber optic but is dependent on the depth in water at which the fiber is exposed to the beam.

© 2009 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Simultaneous measurements of pure scintillation and Cerenkov signals in an integrated fiber-optic dosimeter for electron beam therapy dosimetry

Wook Jae Yoo, Sang Hun Shin, Dayeong Jeon, Seunghan Hong, Seon Geun Kim, Hyeok In Sim, Kyoung Won Jang, Seunghyun Cho, and Bongsoo Lee
Opt. Express 21(23) 27770-27779 (2013)

Embedded structure fiber-optic radiation dosimeter for radiotherapy applications

Qin Zhuang, Hu Yaosheng, Ma Yu, Zhao Wenhui, Sun Weimin, Zhang Daxin, Chen Ziyin, and Lewis Elfed
Opt. Express 24(5) 5172-5185 (2016)

Twisted pair of optic fibers for background removal in radiation fields

P. Z. Y. Liu, N. Suchowerska, and D. R. McKenzie
Appl. Opt. 52(22) 5500-5507 (2013)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (4)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription