GLAS-PPE/2008-05

LHCb VELO software alignment Part III: the alignment of the relative sensor positions

M. Gersabeck(1), C.Parkes(1), S.Viret(1)

(1) University of Glasgow, Kelvin Building, Glasgow G12 8QQ, Scotland.

The LHCb Vertex Locator contains 42 silicon sensor modules. Each module has two silicon sensors. A method for determining the relative alignment of the silicon sensors within each module from data is presented. The software implementation details are discussed. Monte-Carlo simulation studies are described that demonstrate an alignment precision of 1.3 μm is obtained in the sensor plane.


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