Prototype development of an AC-coupled pad matrix detector

Author

Hyun, H.J. ; Bae, J.B. ; Kah, D.H. ; Kim, H.J. ; Kim, H.O. ; Park, H.

Author_Institution

Kyungpook Nat. Univ., Daegu, South Korea

fYear

2011

fDate

23-29 Oct. 2011

Firstpage

1076

Lastpage

1078

Abstract

We designed and fabricated AC-coupled single-sided silicon pad matrix sensors in a 5-inch fabrication line, and developed the signal readout electronics system. The fabricated sensor is fully depleted below 60 V and the leakage current at operating voltage is measured to be ~ 40 nA/cm². Measurements of the coupling capacitance and bias resistance of the sensor show uniformity in their values. The analog signal from the silicon sensor is processed by VATA ASIC chip as frontend electronics. The linearity of the VATA is measured to be good and the signal-to-noise ratio is about 10, which needs the Minimum-Ionizing-Particle (MIP) correction. The phantom image with a Cu foil is also obtained with the fabricated matrix sensor.

Keywords

capacitance measurement; nuclear electronics; readout electronics; silicon radiation detectors; AC-coupled single-sided silicon pad matrix sensor; Cu foil; VATA ASIC chip; bias resistance measurement; coupling capacitance measurement; fabricated matrix sensor; fabrication line; frontend electronics; leakage current; minimum-ionizing-particle correction; operating voltage; signal readout electronics system; signal-to-noise ratio; silicon sensor analog signal; Atmospheric measurements; Copper; Noise; Particle measurements; Power supplies;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2011 IEEE

Conference_Location

Valencia

ISSN

1082-3654

Print_ISBN

978-1-4673-0118-3

Type

conf

DOI

10.1109/NSSMIC.2011.6154576

Filename

6154576