Performance Studies of a Micromegas Chamber in the ATLAS Environment

Abstract

Five small prototype micromegas detectors were positioned in the ATLAS detector during Large Hadron Collider running at $\sqrt{s}=7$ and $8\mathrm{TeV}$. A $9\times 4.5\mathrm{c}{\mathrm{m}}^2$ double drift gap detector was placed in front of the electromagnetic calorimeter and four $9\times 10\mathrm{c}{\mathrm{m}}^2$ detectors on the ATLAS Small Wheel, the first station of the forward muon spectrometer. The one attached to the calorimeter was exposed to interaction rates of about $70\mathrm{kHz}/\mathrm{c}{\mathrm{m}}^2$ at $\mathcal{L}=5\times 10^{33}\mathrm{c}{\mathrm{m}}^{-2}{\mathrm{s}}^{-1}$ two orders of magnitude higher than the rates in the Small Wheel. We present the results from performance studies carried out using data collected with these detectors and we also compare the currents drawn by the detector installed in front of the electromagnetic calorimeter with the luminosity measurement in ATLAS.

9 pages, 11 figures

References in corpus (1)

• Improved luminosity determination in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector at the LHC

Cited by in corpus (2)

• Performance of Multiplexed XY Resistive Micromegas detectors in a high intensity beam
• A Study of a Mini-drift GEM Tracking Detector