| The principle task of the tracking system is to provide efficient reconstruction of
charged-particle tracks and precise measurements of their momenta. It also has to provide
measurements of track directions for the reconstruction of Cherenkov rings in the RICH
detectors. The main tracking system comprises four tracking stations: one station
("TT") is located between RICH1 and the LHCb dipole magnet, three stations
("T1-T3") are located between the magnet and RICH2. Two detector technologies
are employed:
- The
Outer Tracker uses straw-tube
drift chambers with 5 mm cell diameter and covers the largest fraction of the
detector sensitive area in stations T1-T3. The largest station will cover a sensitive area
of 720 cm x 600 cm.
- The Silicon
Tracker uses silicon microstrip detectors with a strip pitch of approximately
200 mum. It covers the entire TT station and a cross-shaped area around the beam pipe
in stations T1-T3. Its total senstive surface is approximately 11 m2
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|
times since
August 03, 2000.