Progress on high-resolution tracking with scintillating fibres: a new detector based on capillaries filled with liquid scintillator

Adinolfi, M.; Angelini, C.; Cardini, A.; Cianfarani, C.; Viá, C. Da; Duane, A.; Fabre, Jean-Paul; Flaminio, V.; Frenkel, A.; Golovkin, S.V.; Gorin, A.; Gruwé, M.; Harrison, K.; Kanerva, M.; Kozarenko, E.; Kushnirenko, A. E.; Martellotti, G.; McEwen, J.G.; Morrison, D. R. O.; Penso, G.; Peresypkin, A.I.; Roda, C.; Websdale, D.; Wilquet, G.; Zaichenko, A.A.

doi:10.1016/0168-9002(92)90700-e

Cited by 16 publications

(1 citation statement)

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“…In order to improve damage resistance, previous studies have examined glass capillary tubes filled with liquid organic scintillator. 4,5) Such tubes are not flexible, and cannot be used in complex facilities or tight and narrow spaces. As flexible fibers being sensitive to radiations, a liquid light guide was tested to measure radiation distributions using a 60 Co gamma ray source.…”

Section: Introductionmentioning

confidence: 99%

Position-Sensitive Radiation Detector with Flexible Light Guide and Liquid Organic Scintillator to Monitor Distributions of Radioactive Isotopes

Hayashi

Kawarabayashi

Asai

et al. 2008

Journal of Nuclear Science and Technology

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Position-sensitive detectors consisting of optical fibers such as scintillating fibers, normal optical plastic fibers, and liquid light guides have been developed as radiation sensors to monitor long-range distributions of radioactive isotopes. Because of losses of optical transmission due to radiation damage in high-level radiation environments, however, both scintillating fibers and normal optical plastic fibers are less applicable to areas of high dose rate. In order to develop a flexible fiber-type radiation sensor with good radiation hardness, we propose to use a liquid light guide, the core of which is replaced by a liquid organic scintillator. A liquid light guide consists of flexible cladding material, and can be easily bent. A liquid organic scintillator can generate a much larger number of photons than the original liquid material, leading to a better detection efficiency than a simple liquid light guide; furthermore, it is not significantly damaged by incident radiation. In preliminary experiments using a fast neutron beam, we confirmed that our prototype system can be operated as a position-sensitive radiation detector. Fundamental characteristics such as spatial resolution, detection efficiency and attenuation length of light propagation were examined with two detectors of 2 m and 10 m length. Optical transmission losses due to radiation damage were examined using 60 Co gamma rays; no significant transmission loss was observed up to a dose of 1:5 Â 10 4 Gy.

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Section: Introductionmentioning

confidence: 99%