Large Polygon Drift Chamber for the JADE Experiment at PETRA

摘要

A large cylindrical shell drift chamber is described. The chamber is 2.4 m long and 1.75 m diameter with a shell thickness of 45 mm. The sense wires are strung in the form of a polygon over rigid supports. This allows a measurement of the z-coordinate in the direction of the cylinder axis with an accuracy of approximately 250 mu . Results of tests on a representative prototype are presented. (ERA citation 08:056274)