Göttingen 2025 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 92: Detectors VIII (Gaseous Detectors)
T 92.4: Vortrag
Freitag, 4. April 2025, 09:45–10:00, VG 1.102
Development of a straw-tube chamber prototype for the inner detector of a future e+e− collider experiment — •Julia Okfen, Davide Cieri, Francesco Fallavollita, Oliver Kortner, Sandra Kortner, Hubert Kroha, Giorgia Proto, Robert Richter, Elena Voevodina, and Jörg Zimmermann — Max Planck Institut für Physik
The future e+e− collider provides a unique opportunity for precision measurements of the Higgs boson and electroweak properties. The process e+ + e− → Z* → Z + H allows Higgs detection via the recoil momentum, independent of the Higgs decay modes. The precise momentum measurement of the Z-boson decay particles is crucial, requiring an accuracy at the level of 0.1% for pT≈ 50 GeV/c, commensurate with the narrow spread of the center-of-mass energy. Such precision can only be attained using silicon sensors that offer position resolutions on the order of a few µm. However, gaseous-based technologies are essential for particle identification via dE/dx measurements along charged particle trajectories. To prevent a significant compromise of momentum resolution due to excessive multiple scattering, the detector material must be minimized. Straw tube chambers meet these requirements and add advantages: each unit operates independently, so a broken wire affects only one tube. They also offer flexibility in gas choice and volume instrumentation. This contribution will present a concept for an inner detector with straw tube and the design, production, and test of a straw-tube prototype chamber.
Keywords: Tracking; Particle identification; Low material budget; FCC-ee