Michiaki Takahashi

TL;DR: In this paper, the authors empirically demonstrated that the proton range and prompt gamma distribution are well correlated in the therapy energy range, and that measuring prompt gammas is a viable method for the clinical application.

TL;DR: In this article, a direction-sensitive dark matter search experiment at Kamioka underground laboratory with the NEWAGE-0.3a detector was performed, which achieved a new record of 5400 pb for 150 GeV / c 2 WIMPs.

TL;DR: In this article, an electron tracking Compton camera (ETCC) was developed for medical use, which has a wide energy dynamic range (200-1300-kV) and wide field-of-view (3-sr) for medical applications.

TL;DR: NewAGE-0.3a as mentioned in this paper is a prototype direction-sensitive dark matter search detector with a gamma-ray rejection power of 8.1 ± 1.9 × 10 −6 at 100 keV/α and an energy resolution of 45% at 6 −MeV /α.

TL;DR: A LaBr3:Ce scintillator array consisting of 8 × 8 pixels, which serves as an absorber of scattered gamma rays with energies from 0.1 to 1 MeV in a Compton camera, and a Gd2SiO5: Ce (GSO:Ci) scintilla array, which is coupled to a 64-channel multi-anode PMT and measured with a single anode photomultiplier tube.