公开(公告)号：US10925557B2

公开(公告)日：2021-02-23

申请号：US16543728

申请日：2019-08-19

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Motohiro Suyama ,  Hideki Shimoi ,  Ryosuke Ota ,  Ryoko Yamada

IPC: A61B6/00 ,  G01T1/24 ,  A61B6/03

Abstract: A high-energy ray detector includes a detection unit in a vacuum container. The detection unit includes a first electron multiplier, a second electron multiplier, and an electron collector. Each of the first electron multiplier and the second electron multiplier has one or more MCPs each configured to emit electrons by interaction with an incident high-energy ray (γ-ray, X-ray (in particular hard X-ray), or neutron ray), and multiply and output the electrons. The electron collector is transmissive for the high-energy ray. The electron collector is configured to collect the electrons multiplied and output from each of the first electron multiplier and the second electron multiplier, and output an electric pulse signal.

公开(公告)号：US09759820B2

公开(公告)日：2017-09-12

申请号：US15333350

申请日：2016-10-25

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Ryosuke Ota ,  Ryoko Yamada ,  Tomohide Omura ,  Mitsuo Watanabe

IPC: G01T1/164 ,  G01T1/20 ,  G01T1/29

CPC classification number: G01T1/2006 ,  G01T1/2985

Abstract: A scintillator array including a plurality of scintillators, an optical detector array corresponding to the scintillators, an AD conversion unit configured to convert an analog signal output from each optical detector into digital data, and a position detection processing unit configured to specify a position of the scintillator on which the radiation is incident are provided. If there are two different pieces of digital data at the same time, the position detection processing unit determines that radiation is incident on two scintillators when energy value data of the two pieces of digital data is greater than an energy value of a Compton edge and specifies the address of the scintillator on which the radiation is incident by comparing the energy values of the two pieces of digital data when at least one of the two energy values is less than the energy value of the Compton edge.