In:
International Journal of Modern Physics E, World Scientific Pub Co Pte Ltd, Vol. 16, No. 07n08 ( 2007-08), p. 2413-2418
Kurzfassung:
The large TPC (95 m 3 ) of the ALICE detector at the CERN LHC was commissioned in summer 2006. The first tracks were observed both from the cosmic ray muons and from the laser rays injected into the TPC. In this article the basic principles of operating the 266 nm lasers are presented, showing the installation and adjustment of the optical system and describing the control system. To generate the laser tracks, a wide laser beam is split into several hundred narrow beams by fixed micro-mirrors at stable and known positions throughout the TPC. In the drift volume, these narrow beams generate straight tracks at many angles. Here we describe the generation of the first tracks and compare them with simulations.
Materialart:
Online-Ressource
ISSN:
0218-3013
,
1793-6608
DOI:
10.1142/S0218301307008021
Sprache:
Englisch
Verlag:
World Scientific Pub Co Pte Ltd
Publikationsdatum:
2007
