Alignment of the LHCb Vertex Locator

Details Alignment of the LHCb Vertex Locator Alignment of the LHCb Vertex Locator

2008-07-22

arxiv.org/abs/0807.3525v1

Nucl.Instrum.Meth.A598:71-74,2009

Physics

Instrumentation and Detectors

Presented at the 10th International Conference On Instrumentation For Colliding Beam Physics (INSTR08), 28 Feb - 5 Mar 2008, N

Scientific paper

10.1016/j.nima.2008.08.112

LHCb will commence data taking as the first dedicated heavy flavour experiment at a hadron collider in 2008. A very high hit precision from its vertex detector (VELO) is essential to meet the tight requirements of vertex reconstruction in B-physics. The single hit precision of the VELO is better than 10 micron. However, the VELO is operated only 8 mm from the beam and must be retracted and reinserted each LHC fill. Hence, the detector places unique demands on its alignment algorithm. The partially assembled VELO system has already been tested in a beam test. The novel software alignment methods are presented together with their interplay with the metrology measurements. Results from Monte Carlo simulation studies are discussed and recent beam test results are shown that prove the method's precision at the micron level.

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