Abstract
The signal wires in double-wire drift chambers need to be mechanically linked together. We describe the construction and test of links, which decrease the overall chamber efficiency by only 10 −3. Where the primary particle beam passes through the drift chambers, certain regions must be desensitized. The construction and test of these dead spots is described. The detection of particles in the desensitized regions is suppressed to the level 2×10 −3, while the neighbouring signal wire remains at least 70% efficient.
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