Laser Monitoring System for the ALICE ITS

A system was developed to locate the position of a laser on a CMOS camera with a accuracy of less than 20 µm. This is used to determine the location of particle tracks at the interface of two sub-detectors. This is accomplished through the application of Minkowski algebra and least squares elliptical fitting. The ALICE (A Large Ion Collider Experiment) detector on the LHC (Large Hadron Collider) at the European Center for Nuclear Research (CERN) is being developed to study heavy ion collisions. Momentum of charged particles coming from these collisions are determined from the radius of curvature of the tracks in ALICE’s TPC (Time Projection Chamber) and the ITS (Inner Tracking System). The ITS and the TPC must work in tandem in order to detect particles with low transverse momentum. The precision alignment of the ITS with respect to the TPC is necessary for an accurate measurement of the radii for these tracks.

Grantor dc:publisher

Creighton University

Year dc:date.issued

2008

Author dc:creator

• Rizzo, Benjamin

Advisor dc:contributor.advisor

• Cherney, Michael G.

Language dc:language.iso

en_US

Handle dc:identifier.uri

http://hdl.handle.net/10504/109

OAI identifier oai:identifier

oai:cdr.creighton.edu:10504/109