Fusion products detection system in migmacell II

Abstract To observe the p+t branch of the D+d and d+d fusion reaction at E d = 0.55 MeV in Migmacell II, three 50 mm 2 Si surface barrier detectors were installed at 120°, −60° and −90° relative to the incoming D 2 + beam. Results of an experiment where the background D 2 gas pressure was controlled at around 1.2×10 −5 torr are presented. A computer simulation program has been developed to understand the shapes of the observed spectra. Proton counting rates obtained yield a migma number of 6×10 8 trapped ions in the cell.