Speaker
Vittorio Raoul Tavolaro
(Eidgenoessische Tech. Hochschule Zuerich (CH))
Description
The CMS experiment at the LHC will substitute its pixel detector during
the extended winter shutdown in 2016-17, with an upgraded detector which
is now being built. An additional layer in the barrel region and an
additional disk in each of the end caps is featured in the new geometry
introduced by the phase 1 upgrade of the pixel detector. In order to
withstand the higher rates of Runs 2 and 3 of the LHC, where instantaneous
luminosities up to 2.0 x 10^34 cm-2 s-1 are expected, new digital readout
chips and improved front-end electronics are introduced. The features of
the upgraded detector are presented, along with a comparison and of its
performance with respect to the current one. The production of the new
Barrel pixel (BPix) detector modules is reviewed with a focus on the
qualification process developed to assess the quality of the assembled
modules produced. New BPix detector modules undergo performance and
quality tests and calibrations in a temperature and humidity controlled
environment, whose details will be presented, together with a description
of the testing setups. Motivations for the choice of particular figures
of merit to assess module quality will be given and a summary of results
from the current status of the production of BPix modules for Phase I
Upgrade will be presented.
