An Unexpected Effect in ALEPH: Long-Term Displacements of the Silicon Vertex Detector

Details An Unexpected Effect in ALEPH: Long-Term Displacements of the Silicon Vertex Detector An Unexpected Effect in ALEPH: Long-Term Displacements of the Silicon Vertex Detector

2002-05-16

arxiv.org/abs/physics/0205047v1

Physics

Instrumentation and Detectors

4 pages, 8 figures. To be published in Proceedings of 'XXXVII Rencontres de Moriond, QCD and Hadronic Interactions', March 200

Scientific paper

The ALEPH Silicon Vertex Detector for LEP2 featured a laser survey system to monitor its mechanical stability. The analysis of laser system data from 1997 to 2000 showed that VDET suffered a time-dependent displacement. It resulted to be compatible with a deformation of the support structure that made the device to slowly rotate during the data-taking. A maximal local displacement of ~20 microns was observed, corresponding to a rotation of ~10E-4 rad. The implementation of a time-dependent correction on the alignment by using the laser system data led to sizeable improvements on the ALEPH data quality.

Affiliated with

Also associated with

No associations

Rating

An Unexpected Effect in ALEPH: Long-Term Displacements of the Silicon Vertex Detector does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with An Unexpected Effect in ALEPH: Long-Term Displacements of the Silicon Vertex Detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An Unexpected Effect in ALEPH: Long-Term Displacements of the Silicon Vertex Detector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-239777