Radial Wire Drift Chambers for CDF Forward Tracking

Abstract
Radial wire drift chambers have been built for the Collider Detector of Fermilab (CDF) to cover forward and backward cone angles between 20 and 100 and 170° and 178°. The chambers are built to provide good azimuthal track resolution, good multi-track resolutions, and high rate capability. Tests done using cosmic-rays and nitrogen UV-laser beam show that single wire resolution of 110 μm and 68 μm are obtainable, respectively. Construction details and test results are presented.

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