Speaker
Michael Breindl
(Freiburg University)
Description
There are two setups in Freiburg with the new ALIBAVA system as a
replacement for the binary ATLAS SCT DAQ for
testing silicon strip detectors (planar and 3D detectors). The first setup
is a beta setup with a radioactive source (Sr90) for charge collection
efficiency measurements and the second one is a laser setup with an
infrared pulsed PicoQuanT laser to investigate the space-resolved electric
field and the charge collection efficiency. Some laser scans were performed on various parts of a planar reference detector with
ALIBAVA. In the future we want to learn more about the electric field
distribution and space-resolved charge collection efficiency of the
detectors with this measurement.
Measuring highly irradiated detectors requires an efficient cooling system
to reduce leakage current and prevent thermal runaway. Standard cooling
systems as used (e.g. on ATLAS module tests) circulating a cooled liquid are not
sufficient. Therefore in the near future a new cooling system based on liquid nitrogen will be installed in Freiburg to cool down to deep temperatures.
Author
Michael Breindl
(Freiburg University)
