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A HgI2 Microstrip Detector Based on Resistive Charge Division Readout

Published online by Cambridge University Press:  21 February 2011

D. Grassi
Affiliation:
Dipartimento di Scienze Fisiche-Università‘Federico II’ and Istituto Nazionale di Fisica Nucleare-Sezione di Napoli, Mostra d'Oltremare pad 20, 80125 Napoli, Italy
F. Murolo
Affiliation:
Dipartimento di Scienze Fisiche-Università‘Federico II’ and Istituto Nazionale di Fisica Nucleare-Sezione di Napoli, Mostra d'Oltremare pad 20, 80125 Napoli, Italy
E. Perillo
Affiliation:
Dipartimento di Scienze Fisiche-Università‘Federico II’ and Istituto Nazionale di Fisica Nucleare-Sezione di Napoli, Mostra d'Oltremare pad 20, 80125 Napoli, Italy
G. Spadaccini
Affiliation:
Dipartimento di Scienze Fisiche-Università‘Federico II’ and Istituto Nazionale di Fisica Nucleare-Sezione di Napoli, Mostra d'Oltremare pad 20, 80125 Napoli, Italy
M. Vigilante
Affiliation:
Dipartimento di Scienze Fisiche-Università‘Federico II’ and Istituto Nazionale di Fisica Nucleare-Sezione di Napoli, Mostra d'Oltremare pad 20, 80125 Napoli, Italy
M. Amann
Affiliation:
CRN/PHASE, 23, rue de Loess, Strasbourg, France
J.M. Koebel
Affiliation:
CRN/PHASE, 23, rue de Loess, Strasbourg, France
P. Siffert
Affiliation:
CRN/PHASE, 23, rue de Loess, Strasbourg, France
W. Dusi
Affiliation:
CNR/TESRE, via dei Castagnoli, 1, Bologna, Italy
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Abstract

A HgI2 linear array detector with a surface resistive layer between the readout strips has been constructed with the aim of achieving the maximum possible active detection area and a spatial resolution of ≈ 50 µm, by using an analog readout of the strip outputs and a centroid finding algorithm.

This device has been developed as a high efficiency position-sensitive detector for use in a Bragg X-ray spectrometer, designed for detecting X-ray photons with energies up to ≈ 30 keV.

Calculations performed by taking into account the various sources of electronic noise have allowed the optimization of the interstrip distance and resistance.

Fabrication techniques and preliminary results on energy and spatial resolution are reported and discussed.

Type
Research Article
Copyright
Copyright © Materials Research Society 1993

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References

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