Speaker
Mariana Rihl
(Vienna University of Technology (AT))
Description
The LHCb Vertex Locator (VELO) is used to reconstruct beam-gas interaction
vertices which allows one to obtain precise profiles of the LHC beams.
In LHCb, this information is combined with the profile of the reconstructed
beam-beam collisions and with the LHC beam currents to perform precise
measurements of the luminosity.
This beam-gas imaging (BGI) method also allows one to study the transverse beam
shapes, beam positions and angles in real time. Therefore, a demonstrator
beam-gas vertex detector (BGV) based on scintillating fibre modules has been
built and installed in LHC Ring 2 (at point 4). We present first results of
the commissioning of this device and compare with recent results obtained in
the LHCb experiment.
Primary author
Mariana Rihl
(Vienna University of Technology (AT))
