Drift chamber with cluster counting technique for CEPC

Le résumé fourni par la source

To achieve the physics goals of the Circular Electron Positron Collider (CEPC), a tracking system combining a silicon tracker and a drift chamber is proposed. The drift chamber could provide excellent particle identification (PID) performance with cluster counting (dN/dx) technique. By measuring the number of primary ionizations along the particle trajectory, the dN/dx will significantly improve PID performance due to little sensitivity to Landau tails. Simulation study, including the detector and electronics responses as well as the reconstruction algorithm, is performed to optimize the detector design and performance. The results show the kaon and pion separation power with 1.2 m track for 20 GeV/c momentum can reach 3.2σ. Fast readout electronics was developed, and a detector prototype was tested with electron beam. The preliminary results validate the performance of the electronics and the feasibility of dN/dx method.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.