Table 2 Comparison of neutron multiplicity counter performances

From: Next-generation neutron detection using a 6Li glass scintillator composite

Characteristic

AWCC (3He)

ENMC (3He)

AWCC (6Li particle-based 4-mm pitch)

Outer dimension [cm]

48 (diameter)

66 (per side, box geometry)

48 (diameter)

Weight (estimated) [kg]

84

280

122

Neutron detection efficiency (fission/fast neutrons) with item in the center of the cavity

26%

65%

66%

Die-away time [µs]

51

22

14

Multiplicity. \({\mbox{FOM}}=\varepsilon /\sqrt{\tau }\) [(%)/(µs1/2)]

3.6

13.9

17.6

  1. The table compares the performance of the existing 3He-based Active Well Coincidence Counter (AWCC) and Epithermal Neutron Multiplicity Counter (ENMC) with that of a modeled 6Li particle-based AWCC.