Mini-strip ionization chamber for γ-ray imaging

Author

Solovov, V. ; Chepel, V. ; Lopes, M.I. ; Abrantes, J. ; Marques, R. Ferreira ; Policarpo, A.J.P.L.

Author_Institution

Laboratorio de Instrumentacao e Fisica Exp. de Particulas, Coimbra Univ., Portugal

Volume

1

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

34

Lastpage

38

Abstract

We are developing a liquid xenon ionization chamber for single-photon radioisotope imaging in nuclear medicine. The chamber has a mini-strip plate made of glass substrate with metal strips deposited along two perpendicular directions. Here, we report on a version of this chamber with an additional grid, improved trigger capability and the development of the multichannel readout system based on highly integrated low-noise front-end electronics and dedicated data acquisition system. The average r.m.s. noise between 250 and 350 electrons has been achieved with the front-end electronics operated at the temperature of -100°C. The whole system was tested with 122 keV γ-rays from ⁵⁷Co

Keywords

data acquisition; diagnostic radiography; gamma-ray detection; liquid ionisation chambers; liquid scintillation detectors; nuclear electronics; particle calorimetry; preamplifiers; readout electronics; xenon; γ-ray imaging; -100 degC; 122 keV; ⁵⁷Co; Xe; data acquisition system; front-end electronics; glass substrate; highly integrated low-noise front-end electronics; liquid xenon ionization chamber; metal strips; ministrip ionization chamber; multichannel readout system; nuclear medicine; single-photon radioisotope imaging; trigger capability; Data acquisition; Electrons; Glass; Ionization chambers; Nuclear electronics; Nuclear medicine; Optical imaging; Radioactive materials; Strips; Xenon;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2001 IEEE

Conference_Location

San Diego, CA

ISSN

1082-3654

Print_ISBN

0-7803-7324-3

Type

conf

DOI

10.1109/NSSMIC.2001.1008404

Filename

1008404