Speaker
Karol Hennessy
(Liverpool)
Description
The LHCb experiment is dedicated to searching for New Physics effects in the
heavy flavour sector, precise measurements of CP violation and rare heavy
meson decays. Precise tracking and vertexing around the interaction point
is crucial in achieving these physics goals.
The LHCb VELO (VErtex LOcator) silicon micro-strip detector is the highest
precision vertex detector at the LHC and is located at only 8 mm from
the proton beams. The high spatial resolution (up to 4 microns single
hit precision) is obtained by a complex chain of processing algorithms
to suppress noise and reconstruct clusters. These are implemented in large
FPGAs, with over one million parameters that need to be individually optimised.
Previously we presented a novel approach that has been developed to optimise
the parameters and integrating their determination into the full software framework
of the LHCb experiment. Presently we report on the experience gained
from regular operation of the calibration and monitoring software with the
collision data taken in 2011 by the LHCb experiment. Both the VELO performance
and its impact on the physics results will be detailed.
Primary author
Dr
Tomasz Szumlak
(AGH Univ. of Science & Technology (PL))
Co-author
Karol Hennessy
(Liverpool)
