GLAS-PPE/2009-17

First LHC beam induced tracks reconstructed in the LHCb VELO

Chris Parkes(1), Silvia Borghi(1), LHCb VELO group (2)

(1) University of Glasgow, Kelvin Building, Glasgow G12 8QQ, Scotland.
(2) University of Glasgow, University of Liverpool, University of Oxford, EPFL Lausanne, University college Dublin, Moscow State University, Syracuse University, Nikhef, CERN

The Vertex Locator of the LHCb experiment has been used to fully reconstruct beam induced tracks at the LHC. A beam of protons was collided with a beam absorber during the LHC synchronisation test of the anti-clockwise beam on the weekend 22nd-24th August2008. The resulting particles have been observed by the Vertex Locator. The LHCb Vertex Locator is a silicon micro-strip detector containing 21 planes of modules. Tracks were observed passing through up to 19 modules (38 silicon sensors). A total of over 700 tracks were reconstructed, and are being used to study the calibration and alignment of the detector.

Proceedings of a special announcement presentation by C.~Parkes at the 8th International Conference on Position Sensitive Detectors
1st September 2008, University of Glasgow, Scotland, UK.

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