公开(公告)号：US20200093448A1

公开(公告)日：2020-03-26

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：US20170123078A1

公开(公告)日：2017-05-04

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: G01T1/20 ,  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.

公开(公告)号：US20200326438A1

公开(公告)日：2020-10-15

申请号：US16090655

申请日：2017-04-04

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Ryosuke OTA ,  Ryoko YAMADA ,  Takahiro MORIYA

IPC: G01T1/29

Abstract: A radiation position detector includes a radiator including a medium that generates Cherenkov light by interacting with an incident radiation, a photodetector including a plurality of two-dimensionally arrayed pixels, the plurality of pixels being disposed to correspond to a predetermined surface of the radiator, and a control unit that acquires position information and time information of the plurality of pixels which have detected the Cherenkov light on the basis of a signal output from the photodetector, and obtains a position of a generation place of the Cherenkov light in the radiator on the basis of the acquired position information and the acquired time information, and a propagation locus of the Cherenkov light in the radiator.