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T: Teilchenphysik

T 408: Spurkammern IV

T 408.7: Vortrag

Donnerstag, 21. März 2002, 15:30–15:45, SR 1039/40

The Central Fiber Tracker of the Upgraded DØ Detector — •Thomas Nunnemann — Fermilab, MS 357, P.O. Box 500, Batavia, IL 60510, U.S.A.

For the new run at the upgraded Fermilab Tevatron collider, the DØ experiment is operating an entirely new tracking system based on a silicon micro-strip detector and a central fiber tracker located inside a 2 Tesla super-conducting solenoid.

The central tracker covering a range in pseudo-rapidity of about |η| < 2, consist of approx. 78,000 scintillating fibers, which are arranged on 8 cylindrical super-layers. The fast read-out with Visible Light Photon Counters (VLPC) allows to employ reconstructed tracks for trigger decisions at Level 1.

In this talk the construction and read-out, as well as the trigger and track reconstruction performance will be discussed.