Title :
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
fDate :
6/23/1905 12:00:00 AM
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;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2001 IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-7324-3
DOI :
10.1109/NSSMIC.2001.1008404
