Tritium Production-Rate Measurement Techniques Developed at FNS/JAERI

Abstract

The tritium production-rate (TPR) is a very important neutronic parameter in the D-T fusion blanket research. The following five techniques for the measurement of TPR have been developed at FNS/JAERI: (1) Subtraction method using a pair of Li-glass scintillators, (2) Indirect method using a small sphere NE213 scintillator, (3) Liquid scintillation method with Li₂O pellet, (4) Liquid scintillation method with Li₂O plate/block (zonal method), and (5) LiF TLD self-irradiation method. This paper describes these methods, comparison of their features, and their typical results for the blanket benchmark experiments at FNS.