Design of the FCC-hh Muon Detector and Trigger System

Kortner, O.; Kortner, S.; Kroha, H.; Podkladkin, S.; Richter, R.

doi:10.1016/j.nima.2018.10.013

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Design of the FCC-hh Muon Detector and Trigger System

MPS-Authors

Kortner, O.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Kortner, S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Kroha, H.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Podkladkin, S.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Richter, R.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

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Citation

Kortner, O., Kortner, S., Kroha, H., Podkladkin, S., & Richter, R. (2019). Design of the FCC-hh Muon Detector and Trigger System. Nuclear Instruments and Methods in Physics Research Section A, 936, 447.

Cite as: https://hdl.handle.net/21.11116/0000-0005-D6F1-9

Abstract

The design of a muon detector and first-level muon trigger system for the FCC-hh baseline experiment is presented. The baseline FCC-hh detector configuration with a solenoid magnet system providing a field integral of 18 Tm over a wide pseudorapidity interval and a muon system around the solenoid and the calorimeter system is assumed. In order to identify muons with high momentum resolution one needs to measure the muon incidence angle at the entry point of the muon system with an angular resolution better than 100 µrad. This precision can be achieved with chambers with two quadruple layers which are separated by a 1.5 m thick spacer structure and contain 15 mm diameter aluminium drift tubes filled with Ar:CO(93:7) at 3 bars absolute pressure. Each drift-tube chamber is combined with a double layer of thin-gap RPC chambers which provide bunch crossing identification with better than 1 ns time resolution, muon trigger seeds, and coordinate measurement along the tubes.