Speaker
Manuel Lozano
(CNM-IMB Barcelona)
Description
The new super-LHC upgrade will impose severe restrictions in the radiation
hardness of
silicon detectors with maximum foreseen fluence of 10^16 particles/cm^2
in the innermost region.
Microstrip detectors have been fabricated in p-type high resistivity float zone
silicon at CNM microfabrication facilities and have been irradiated at the
TRIGA Mark II reactor in Ljubljana to a fluence of 10^16 neutrons/cm^2
and characterized at IFIC laboratory.
The detectors have been characterized in terms of reverse current, full
depletion voltage, and
total collected charge before and after irradiation. CCE has been measured
by infrared
laser illumination and ^90Sr beta source, with an energy deposition
comparable to minimum ionising particles (mip). The results show that even
after this extreme radiation fluence, p-type substrate detectors collect
enough charge to induce a measurable signal at -35C with standard readout
electronics.
Author
Manuel Lozano
(CNM-IMB Barcelona)
