Wavelength-shifting-fibre-based neutron image detector with a fibre-optic taper to increase the spatial resolution

被引：9
|
作者：
Nakamura, T. [1 ]
Katagiri, M. [1 ]
Toh, K. [1 ]
Sakasai, K. [1 ]
Ebine, M. [2 ]
Birumachi, A. [2 ]
Soyama, K. [1 ]
机构：
[1] Japan Atom Energy Agcy, J PARC Ctr, Tokai, Ibaraki 3191195, Japan
[2] Japan Atom Energy Agcy, Mech Engn & Elect Sect, Tokai, Ibaraki 3191195, Japan
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2009年 / 604卷 / 1-2期
关键词：
Neutron detector; Wavelength-shifting-fibre; Fibre-optic taper; High spatial resolution;
D O I：
10.1016/j.nima.2009.01.048
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The effective pixel size of a two-dimensional wavelength-shifting-fibre (WLS-fibre)-based neutron image detector was improved from 0.5 to 0.16 mm by including a fibre-optic taper (FOT) between the scintillator screen and the WLS fibre. The WLS-fibre-based detector consisted of a thin ZnS/(6)LiF screen, a FOT and WLS ribbons crossed in the x and y directions. The demonstrator detector had 16 fibre channels in each direction, and the light signals in each fibre were read out individually. The FOT was constructed from fine glass fibres with a taper ratio of 3.1 and served as an image magnifier. The prototype detector equipped with the FOT exhibited a spatial resolution of 0.3 mm, compared to the spatial resolution of 0.8 mm of the original detector without the FOT. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：158 / 160
页数：3
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