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Your search keyword '"Petridou, Ch."' showing total 2 results
Start Over Author "Petridou, Ch." Topic muons
2 results on '"Petridou, Ch."'

1. The Micromegas Project for the ATLAS New Small Wheel.

Author

Manthos, I., Maniatis, I., Maznas, I., Tsopoulou, M., Paschalias, P., Koutsosimos, T., Kompogiannis, S., Petridou, Ch., Tzamarias, S. E., Kordas, K., Lampoudis, Ch., Tsiafis, I., and Sampsonidis, D.

Subjects
LARGE Hadron Collider, SPECTROMETERS, LUMINOSITY, MUONS, PARTICLE accelerators
Abstract

The MicroMegas technology was selected by the ATLAS experiment at CERN to be adopted for the Small Wheel upgrade of the Muon Spectrometer, dedicated to precision tracking, in order to meet the requirements of the upcoming luminosity upgrade of the Large Hadron Collider. A large surface of the forward regions of the Muon Spectrometer will be equipped with 8 layers of MicroMegas modules forming a total active area of 1200 m². The New Small Wheel is scheduled to be installed in the forward region of 1.3 < |η| < 2.7 of the ATLAS detector during the second long shutdown of the Large Hadron Collider. The New Small Wheel will have to operate in a high background radiation environment, while reconstructing muon tracks as well as furnishing information for the Level-1 trigger. The project requires fully efficient MicroMegas chambers with spatial resolution down to 100 µm, a rate capability up to about 15 kHz/cm² and operation in a moderate (highly inhomogeneous) magnetic field up to B=0.3 T. The required tracking is linked to the intrinsic spatial resolution in combination with the demanding mechanical accuracy. An overview of the design, construction and assembly procedures of the MicroMegas modules will be reported. [ABSTRACT FROM AUTHOR]

Published
2019
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2. Extensive Performance Studies for the ATLAS BIS-MDT Precision Muon Chambers With Cosmic Rays.

Author

Alexopoulos, T., Avramidou, R., Bratzler, U., Cemoch, C., Dris, M., Fassouliotis, D., Filippas, T. A., Fokitis, E., Cans, E. N., Ioannou, P., Katsoufis, E. C., Kourkoumelis, Ch., Krepouri, A., Liolios, T., Maltezos, S., Manolopoulou, M., Palestini, S., Petridou, Ch., Polychronakos, V., and Sampsonidis, D.

Subjects
HADRON colliders, COLLIDERS (Nuclear physics), OPTICAL resolution, COSMIC rays, IONIZING radiation, MUONS
Abstract

ATLAS (a toroidal LHC apparatus) is a general purpose experiment that will start its operation at the large hadron collider (LHC) at CERN in 2007. The ATLAS detector is designed to explore numerous physics processes by recording, measuring, and investigating the products emerging from proton-proton collisions at energies up to 14 TeV. High-precision muon momentum measurement (dp/p ∼ 10% at pT = 1 TeV/c) over large areas using monitored drift tube (MDT) chambers is crucial for the ATLAS experiment. More than 1200 MDT chambers, consisting of approximately 370 000 drift tubes, will provide a total coverage of 5500 m². Three Greek universities have taken the responsibility to construct 130 barrel inner small (BIS)-MDT chambers using 30 000 drift tubes of ∼ 1.7 m length that have been quality tested before assembly. The design of the muon drift tubes aims at high detection efficiency (> 95%) and a spatial single tube resolution of < 80 μm. This paper describes the cosmic ray test setup, which has been instrumented in order to verify that the BIS-MDT chamber Module-0 fulfills its design requirements. The analysis of its data shows that the chamber meets these requirements; it has low noise levels, uniform drift properties, good spatial resolution, and high particle detection efficiency. [ABSTRACT FROM AUTHOR]

Published
2003
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