Pulse processing for the PET liquid xenon multiwire ionisation chamber

Author

Crespo, P. ; van der Marel, J. ; Chepel, V. ; Lopes, M.I. ; Santos, Dinis ; Janeiro, L. ; Solovov, V. ; Marques, R. Ferreira ; Policarpo, A.J.P.L.

Author_Institution

Dept. of Phys., Coimbra Univ., Portugal

Volume

2

fYear

1998

fDate

1998

Firstpage

929

Abstract

The readout and data acquisition systems designed for a first prototype of liquid xenon position sensitive gamma ray detector for Positron Emission Tomography is described, The problem of measurement of the gamma ray energy in the gridless multiwire ionisation chamber is considered. A previously suggested drift time based correction algorithm, allowing correction of the amplitude spectra for the contribution of positive ions, is experimentally tested. First ionisation spectra, with an energy resolution of 15-17%, are presented. A pulse shape discrimination method for rejecting the induction cross-talk between the wires, improving energy resolution and allowing the unambiguous identification of Compton scattered events in the detector, is described

Keywords

biomedical electronics; data acquisition; multiwire ionisation chambers; nuclear electronics; positron emission tomography; pulse analysers; xenon; Compton scattered events; PET liquid xenon multiwire ionisation chamber; Xe; drift time based correction algorithm; energy resolution; gamma ray energy; gridless multiwire ionisation chamber; ionisation spectra; liquid xenon position sensitive gamma ray detector; pulse shape discrimination method; Data acquisition; Energy measurement; Energy resolution; Gamma ray detectors; Ionization chambers; Position measurement; Positron emission tomography; Prototypes; Testing; Xenon;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium, 1998. Conference Record. 1998 IEEE

Conference_Location

Toronto, Ont.

ISSN

1082-3654

Print_ISBN

0-7803-5021-9

Type

conf

DOI

10.1109/NSSMIC.1998.774321

Filename

774321