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T: Fachverband Teilchenphysik
T 11: Gaseous Detectors I
T 11.1: Vortrag
Montag, 16. März 2026, 16:15–16:30, KH 01.014
A Straw Tube Chamber Prototype — •Julia Okfen, Oliver Kortner, Sandra Kortner, Hubert Kroha, Max Lohrmann, Nick Meier, Giorgia Proto, and Jörg Zimmermann — Max Planck Institute for Physics, Munich, Germany
The future e+e− collider provides a unique opportunity for precision measurements of the Higgs boson. The Higgs-strahlungs process enables the detection of Higgs bosons through the recoil momentum and thereby allows the determination of its total width in a model independent way. To achieve this, 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. As GEANT-4-based studies performed by the Straw Tracker community reveal, a tracking system consisting of a combination of silicon and gaseous detectors achieves the best momentum resolution. The gaseous detector can be realized using a drift chamber, however, a straw tube tracker also achieves a comparable performance, offering additional advantages, such as functioning as independent detector units. This contribution presents the development and production of a 1.5m-long Straw Tube chamber prototype. It also reports test beam results obtained at CERN’s GIF++ facility, including key performance criteria such as efficiency and single tube resolution, which highlight the suitability of the Straw Tube tracker for an inner detector concept of a future e+e− collider experiment. In addition, important lessons learned are discussed that will be essential for designing and building the next 4m-long prototype.
Keywords: Tracking; Particle identification; Low material budget; FCCee