Hamburg 2016 – scientific programme
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T: Fachverband Teilchenphysik
T 99: Detektorsysteme IV
T 99.4: Talk
Thursday, March 3, 2016, 17:30–17:45, VMP8 SR 205
Simulation of an all silicon tracker for CLIC — •Magdalena Muenker1,2 and Andreas Nuernerg1,2 — 1CERN — 2University of Bonn
CLIC is a proposed future electron-positron linear collider with a centre-of-mass energy up to 3 TeV. The aim of high precision measurements at CLIC is driving the design of the detector for CLIC. To perform a precise measurement of the Higgs recoil mass a momentum resolution of σpT/pT2 ∼ 2 · 10−5GeV−1 is required. This imposes a single point tracking resolution of ∼ 7 µm. To reach this aim an all silicon tracker is foreseen for CLIC. A simulation chain has been set up to study the performance of different silicon sensor designs. This simulation chain consists of a GEANT4 simulation to model the energy deposit in silicon, a finite element simulation of the charge drift and signal formation with TCAD and a fast parametric modelling of the front-end electronics. By that energy fluctuations, electronic noise and the digitalisation of the readout signal are taken into account. Furthermore this tool is used to predict the sensor performance in terms of efficiency, cluster-size and resolution. This framework is used to study the performance of e.g. sensors with different pitch and thickness. Various incident angles of charged particles with respect to the sensor surface and the effect of a magnetic field are taken into account. The simulation chain is validated with data.