DocumentCode :
2191875
Title :
In-situ out-core monitoring using optical fibers with scintillators
Author :
Sakasai, K. ; Katagiri, M.
Author_Institution :
Japan Atomic Energy Res. Inst., Ibaraki, Japan
Volume :
1
fYear :
2002
fDate :
10-16 Nov. 2002
Firstpage :
397
Abstract :
In-situ radiation monitoring in the outside region of a reactor core has been experimentally demonstrated using radiation-resistant optical fibers with scintillators. To avoid influences of luminescence (400-450 nm) from the fibers by radiation, Y3A15O12:Ce scintillators were adopted because the luminescence has its peak around 550 nm. In this method, low radiation field was monitored with a pulse counting method while high field with an integral method. The demonstration experiments shows that radiation intensity outside a reactor core can be well monitored with the system from the reactor power of 1 kW to 3.5 MW. The vertical radiation intensity distribution around the reactor core was also measured at 3.5 MW.
Keywords :
cerium; fission reactor core control; integration; luminescence; optical fibres; radiation monitoring; solid scintillation detectors; yttrium compounds; 1 kW to 3.5 MW; 400 to 450 nm; 550 nm; YAG:Ce; YAl5O12:Ce; integral method; intensity distribution; luminescence; optical fibers; out-core monitoring; pulse counting method; radiation monitoring; radiation-resistant optical fibers; reactor core; reactor power; scintillators; Atomic measurements; Electromagnetic radiation; Inductors; Luminescence; Optical attenuators; Optical fibers; Optical pulses; Pulse amplifiers; Radiation monitoring; Silicon compounds;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Nuclear Science Symposium Conference Record, 2002 IEEE
Print_ISBN :
0-7803-7636-6
Type :
conf
DOI :
10.1109/NSSMIC.2002.1239340
Filename :
1239340
Link To Document :
بازگشت