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Detector Construction:
Together with other laboratories in Belgium ( UA,
UCL
and UMH),
Europe, Pakistan and US, the IIHE is participating to the construction
of the CMS
Silicon Strip Tracker. This Tracker is built of ~16,000 silicon
strip detectors (see below - centre), ~10 x 15 cm², arranged in
cylindrical
layers in the barrel (see the artist view below - left) and in wheels
in
the endcaps (see below - right).
 
 The
IIHE was responsible for the procurement and participated to the
tests of the ~17,000 pitch adapters
allowing to connect the
readout strips to the readout electronics, and for the procurement of
the ~17,000 frames supporting the
silicium wafers and the readout
electronics. In addition, most of the frames needed for the endcap
wheels (~6,500) are being assembled in Brussels. A significant fraction
of the endcap detector modules
(~1,500) are assembled at the IIHE on a
gantry. A set-up to assemble
and long term test sectors of wheels
equiped with ~20 detectors, named petals, was
installed and should
deliver ~40 tested petals.The IIHE engineers and technicians also
provided several pieces of
equipment needed for the Tracker construction. For example, they
machined pieces and built the electronic boxes needed to operate the 9
gantries of the collaboration. The optical electronic system used for
the petal tests and the test system for the light generator for the
hybrids were developped by an engineer from the IIHE.
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