  This study is focused on an investigation of the performance of the Short
Strip module developed by the ATLAS Inner Tracker (ITk) strip collaboration
using electron beams of energy 5.4 GeV and 5.8 GeV at the DESY-II Testbeam
Facility. The noise at +30 C and -30 C was measured. The ratio of the two
measurements is compared with a circuit-model calculation. The measured noise
at -30 C is compared with the maximum noise that would correspond to an
acceptable signal-to-noise ratio after the expected radiation damage from
operation at HL-LHC. The measured charge distributions at +30 C and -30 C are
compared with GEANT4 simulations. The detection efficiency and noise-occupancy
were measured as a function of threshold at both +30 C and -30 C. The average
cluster width was measured as a function of threshold. Scans of detection
efficiency versus threshold at different delay settings were used to
reconstruct the pulse shape in time. The resulting pulse shape was compared
with a circuit model calculation.
