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Titolo:
PERFORMANCE AND SIMULATION OF CDZNTE STRIP DETECTORS AS SUBMILLIMETERRESOLUTION IMAGING GAMMA-RADIATION SPECTROMETERS
Autore:
MAYER M; BOYKIN DV; CHERRY ML; COURVILLE JF; DOTY FP; DRAKE A; GUZIK TG; HAMEL LA; LARSON K; MACRI JR; MCCONNELL ML; RYAN JM; TOUSIGNANT O;
Indirizzi:
UNIV NEW HAMPSHIRE,CTR SPACE SCI DURHAM NH 03824 UNIV MONTREAL,DEPT PHYS MONTREAL PQ H3C 3J7 CANADA LOUISIANA STATE UNIV,DEPT PHYS & ASTRON BATON ROUGE LA 70803 DIGIRAD SAN DIEGO CA 92121
Titolo Testata:
IEEE transactions on nuclear science
fascicolo: 3, volume: 44, anno: 1997,
parte:, 1
pagine: 922 - 928
SICI:
0018-9499(1997)44:3<922:PASOCS>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
14
Recensione:
Indirizzi per estratti:
Citazione:
M. Mayer et al., "PERFORMANCE AND SIMULATION OF CDZNTE STRIP DETECTORS AS SUBMILLIMETERRESOLUTION IMAGING GAMMA-RADIATION SPECTROMETERS", IEEE transactions on nuclear science, 44(3), 1997, pp. 922-928

Abstract

We report gamma-ray detection performance measurements and computer simulations of a sub-millimeter pitch CdZnTe strip detector. The detector is a prototype for gamma-ray astronomy measurements in the range of20-200 keV. The prototype is a 1.5 mm thick, 64 x 64 orthogonal stripe CdZnTe detector of 0.375 mm pitch in both dimensions, with approximately one square inch of sensitive area. Using discrete laboratory electronics to process signals from an 8 x 8 strip region of the prototypewe measured good spectroscopic uniformity and sub-pitch (similar to 0.2 mm) spatial resolution in both x and y dimensions. We present belowmeasurements of the spatial uniformity, relative timing and pulse height of the anode and cathode signals, and the photon detection efficiency. We simulated the photon interactions and signal generation in thestrip detector and the test electronics and we compare these results to the data. The data indicate that the cathode signal-as well as the anode signal-arises primarily from the conduction electrons rather than the holes. This presents a detection efficiency limitation which must be considered in the design of strip detector systems.

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Documento generato il 27/11/20 alle ore 04:09:31