CERN Accelerating science

Article
Report number	arXiv:1603.09508 ; MPP-2013-596
Title	Performance of Drift-Tube Detectors at High Counting Rates for High-Luminosity LHC Upgrades
Author(s)	Bittner, Bernhard (Munich, Max Planck Inst.) ; Dubbert, Joerg ; Kortner, Oliver ; Kroha, Hubert ; Manfredini, Alessandro ; Nowak, Sebastian ; Ott, Sebastian ; Richter, Robert ; Schwegler, Philipp ; Zanzi, Daniele ; Biebel, Otmar ; Hertenberger, Ralf ; Ruschke, Alexander ; Zibell, Andre
Publication	2013
Imprint	31 Mar 2016
Number of pages	5
In:	Nucl. Instrum. Methods Phys. Res., A 732 (2013) 250-254
In:	13th Vienna Conference on Instrumentation, Vienna, Austria, 11 - 15 Feb 2013, pp.250-254
DOI	10.1016/j.nima.2013.07.076
Subject category	hep-ex ; Particle Physics - Experiment ; physics.ins-det ; Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Abstract	The performance of pressurized drift-tube detectors at very high background rates has been studied at the Gamma Irradiation Facility (GIF) at CERN and in an intense 20 MeV proton beam at the Munich Van- der-Graaf tandem accelerator for applications in large-area precision muon tracking at high-luminosity upgrades of the Large Hadron Collider (LHC). The ATLAS muon drift-tube (MDT) chambers with 30 mm tube diameter have been designed to cope with γ and neutron background hit rates of up to 500 Hz/cm 2 . Background rates of up to 14 kHz/cm 2 are expected at LHC upgrades. The test results with standard MDT readout electronics show that the reduction of the drift-tube diameter to 15 mm, while leaving the operating parameters unchanged, vastly increases the rate capability well beyond the requirements. The development of new small-diameter muon drift-tube (sMDT) chambers for LHC upgrades is completed. Further improvements of tracking ef fi ciency and spatial resolution at high counting rates will be achieved with upgraded readout electronics employing improved signal shaping for high counting rates
Copyright/License	arXiv nonexclusive-distrib. 1.0

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