Speaker
Tiina Naaranoja
(Helsinki Institute of Physics, Helsinki, Finland)
Description
Diamond timing detectors were installed in CT-PPS Roman Pots in June
2016 and served for collecting 2.5 fb^-1 of data. During the LHC technical stop from Dec 2016 to Apr 2017 one plane of diamond detectors was removed from each detector package and replaced with Ultra-Fast Silicon Detectors (UFSD). This provided an opportunity to re-characterize the diamond detector performance after irradiation.
The present talk discusses the results of the tests performed with a 180 GeV pion beam at the Northern Area at CERN in May 2017. The detectors were found in working condition. The typical signal height varied from 0.5 to 0.6 V, which is in the same range as typical MIP signal from a diamond sensor, but slightly lower than the non-irradiated reference detector in the same beam test. The signal-to-noise ratio was above 25. The challenges related to the comparison of the results to performance prior to the installation are also discussed.
Primary author
Tiina Naaranoja
(Helsinki Institute of Physics, Helsinki, Finland)
Co-authors
Laura Martikainen
(Helsinki Institute of Physics, Helsinki, Finland)
Mirko Berretti
(Helsinki Institute of Physics, Helsinki, Finland)
