Speaker
Simon Eckert
(Universität Freiburg)
Description
In view of the projected luminosity upgrade of the LHC, we are studying
novel Silicon detectors in terms of their radiation-hardness to be employed
as tracking detectors at the sLHC. We have tested 3D-detectors of
singletype-column (STC) design, with only n-type columns etched into a p-
type substrate. Rows of the columns are connected together to form strips.
Using ATLAS SCT electronics, we have built prototype detector modules
which were then irradiated to a dose of up to 10 15N eq/cm 2. After
irradiation, the modules were tested with two methods: a β-source set-up
and an IR-laser. The former allows measurements of the absolute CCE and
Signal, whereas the laser yields only relative results, though with high
position resolution. Position-sensitive measurements are required, as from
simulation the STC 3D-detector geometry is expected to have low-field
regions with lower CCE. We will report on the performance of the irradiated
3D-modules read out at 40 MHz, compare it to the un-irradiated behaviour,
and draw conclusions about the feasibility of using such detectors for
tracking at the sLHC.
Authors
Simon Eckert
(Universität Freiburg)
Ulrich Parzefall
(Uni Freiburg)
