Speaker
Davide Pinci
(ROMA1)
Description
In last years, the development of optical sensors has produced objects able to provide very interesting performance. Large granularity is offered along with a very high sensitivity.
CMOS sensors with millions of pixels able to detect as few as two or three photons
per pixel are commercially available and can be used to read-out the optical signals
provided by tracking particle detectors.
In this work the results obtained by optically reading-out a triple-GEM detector by
a commercial CMOS sensor will be presented.
A standard detector was assembled with a transparent window below the third GEM
allowing the light to get out. The detector is supplied with an Ar/CF$_4$ based gas mixture
producing 650 nm wavelenght photons matching the maximum quantum efficiency of
the sensor (about 80\%).
In the presentation the measured performance as light yield, space resolution and detection efficiency will be shown.
Primary author
Davide Pinci
(ROMA1)
Co-authors
Adalberto Sciubba
(ROMA1)
Alessio Sarti
(LNF)
Eleuterio Spiriti
(LNF)
Dr
Michela Marafini
(Centro Fermi)
Vincenzo Patera
(ROMA1)
