A compact hybrid photodetector (HPD)

Author

Suyama, M. ; Kawai, Y. ; Kimura, S. ; Asakura, N. ; Hirano, K. ; Hasegawa, Y. ; Saito, T. ; Morita, T. ; Muramatsu, M. ; Yamamoto, K.

Author_Institution

Hamamatsu Photonics KK, Japan

Volume

44

Issue

3

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

985

Lastpage

989

Abstract

In order to be utilized in such application fields as high energy physics or medical imaging, where a huge number of photodetectors are assembled in designated small area, the world´s smallest hybrid photodetector (HPD), the compact HPD, has been developed. The overall diameter and the length of the tube are 16 mm and 15 mm, respectively. The effective photocathode area is 8 mm in diameter. At applied voltage of -8 kV to the photocathode, the electron multiplication gain of a PD incorporated HPD (PD-HPD) is 1,600, and that of an APD (APD-HPD) is 65,000. In the pulse height distribution measurement, photoelectron peaks up to 6 photoelectrons are clearly distinguishable with the APD-HPD. Experiments established that there was no degradation of gain in magnetic fields up to 1.5 T, an important performance characteristic of the compact HPD for application in high energy physics

Keywords

biomedical imaging; particle detectors; photodetectors; -8 kV; 0 to 1.5 T; 15 mm; 16 mm; compact hybrid photodetector; electron multiplication gain; high energy physics; medical imaging; performance characteristic; photoelectron peaks; pulse height distribution; Assembly; Biomedical imaging; Cathodes; Degradation; Electrons; Magnetic field measurement; Performance gain; Photodetectors; Pulse measurements; Voltage;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.603790

Filename

603790