Speaker
Description
Future circular e+e− colliders require tracking systems that combine a low material budget, high spatial resolution, mechanical stability, and particle identification capabilities. As part of the IDEA detector concept, the drift chamber is being developed as a large (4m long and 4m in diameter), ultra-light central tracker based on a large number of thin wires and composite structural components, and operating in helium atmosphere . This contribution presents the design and the characterization studies of the components of the IDEA drift chamber. In particular, a mechanical design of the composite endplates was developed using CAD and finite element simulations, new material for the wires are under test and suitable gas mixtures are going to be studied. Measurements on beam test data collected using helium-based gas mixtures were done, and used to study the primary ionisation cluster counting technique for particle identification. A “full length” prototype of the IDEA drift chamber is in preparation, aiming to test and validate the chosen solutions for the detector design and to measure the performance.