A small scintillating fiber camera consisting of 0.25-mm square fibers for space dosimetry

Author

Terasawa, K. ; Doke, T. ; Hara, K. ; Hasebe, N. ; Kikuchi, J. ; Kudo, K. ; Takeda, N. ; Yoshihira, E.

Author_Institution

Adv. Res. Inst. for Sci. & Eng., Waseda Univ., Tokyo, Japan

Volume

48

Issue

4

fYear

2001

fDate

8/1/2001 12:00:00 AM

Firstpage

1118

Lastpage

1121

Abstract

A small scintillating fiber camera for space dosimetry was developed. The camera consists of a scintillating fiber stack bundled with 0.25-mm square fibers, two image intensifier units whose input windows are 40 mm in diameter, and two photomultipliers. Neutron events are distinguished from gamma-ray events by observing three-dimensional track images of recoil protons and electrons. Experimental results show that events caused by recoil protons with energies above 5 MeV can be distinguished from gamma-ray events. The purpose of this camera is to evaluate the LET, of charged particles produced in the interaction of neutrons with the nucleus in scintillating fibers. The camera is expected to measure the dose contribution from higher energy neutron, especially, more than ~10 MeV, which is the upper limit energy of the present measurement in space

Keywords

dosimeters; gamma-ray detection; neutron detection; solid scintillation detectors; 0.25 mm; dose contribution; gamma-ray events; image intensifier units; neutron events; photomultipliers; scintillating fiber camera; scintillating fiber stack; space dosimetry; three-dimensional track images; Cameras; Current measurement; Dosimetry; Electrons; Energy measurement; Image intensifiers; Neutrons; Particle measurements; Protons; Space vehicles;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.958734

Filename

958734