42
K. Hashimoto
Fig. 2.22 Time-sequence
data N(t) and Q(t) in a beam
trip experiment (Ref. [28])
(a) N(t)
(b) Q(t)
a pulsed neutron source. The mask analysis technique was employed to reduce the
dependence.
It is obvious from Table 2.3 that counter B1 significantly overestimates the subcriticality. This feature is originated from a large amount of source neutrons traveling
from the DT target. This is because the counter relatively close to the target counts
much more the source neutrons during successive pulse injection, and then the source
neutrons decay out with a larger decay constant after beam trip and more steeply
K. Hashimoto
Fig. 2.22 Time-sequence
data N(t) and Q(t) in a beam
trip experiment (Ref. [28])
(a) N(t)
(b) Q(t)
a pulsed neutron source. The mask analysis technique was employed to reduce the
dependence.
It is obvious from Table 2.3 that counter B1 significantly overestimates the subcriticality. This feature is originated from a large amount of source neutrons traveling
from the DT target. This is because the counter relatively close to the target counts
much more the source neutrons during successive pulse injection, and then the source
neutrons decay out with a larger decay constant after beam trip and more steeply