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Feb 15 – 19, 2016
Vienna University of Technology
Europe/Vienna timezone

Imaging the LHC beams with silicon and scintillating fibre vertex detectors

Feb 16, 2016, 5:20 PM
Vienna University of Technology

Vienna University of Technology

Gusshausstraße 27-29, 1040 Wien
Talk Miscellaneous Miscellaneous 2


Mariana Rihl (Vienna University of Technology (AT))


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))

Presentation materials