Alignment procedure of the LHCb Vertex Detector

Abstract

LHCb is one of the four main experiments of the Large Hadron Collider (LHC) project, which will start at CERN in 2008. The experiment is primarily dedicated to B-Physics and hence requires precise vertex reconstruction. The silicon vertex locator (VELO) has a single hit precision of better than 10 micron and is used both off-line and in the trigger. These requirements place strict constraints on its alignment. Additional challenges for the alignment arise from the detector being retracted between each fill of the LHC and from its unique circular disc r/phi strip geometry. This paper describes the track based software alignment procedure developed for the VELO. The procedure is primarily based on a non-iterative method using a matrix inversion technique. The procedure is demonstrated with simulated events to be fast, robust and to achieve a suitable alignment precision.

accepted for publication in NIMA

References in corpus (4)

• O'KKLT
• The accelerating universe and a limiting curvature proposal
• Supersymmetric States in M5/M2 CFTs
• Performance of the LHCb Vertex Detector Alignment Algorithm determined with Beam Test Data

Cited by in corpus (11)

• LHCb Detector Performance
• Performance of the LHCb Vertex Locator
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• Application of vertex and mass constraints in track-based alignment
• Performance of the LHCb Vertex Detector Alignment Algorithm determined with Beam Test Data
• Alignment of the Alpha Magnetic Spectrometer (AMS) in space
• Study of the Global Alignment for the DAMPE Detector
• Alignment of the LHCb Vertex Locator
• Track-based alignment for the BESIII CGEM detector in the cosmic-ray test
• Alignment of the CLAS12 central hybrid tracker with a Kalman Filter
• Measurement of the lifetimes of promptly produced ${\Omega }_c^0$ and ${\Xi }_c^0$ baryons