4–12 Jul 2018
Europe/Athens timezone
Group photo: indico.cern.ch/event/663474/images/19808-ICNFP_2018_Group_Photo.JPG

The Micromegas construction project for the ATLAS New Small Wheel

5 Jul 2018, 11:30
30m
Room 2

Room 2

Speaker

Christos Lampoudis (Université Paris-Saclay (FR))

Description

In order to meet the requirements of the upcoming luminosity upgrade of the LHC, the
Micromegas (MM) technology was selected to be adopted for the New Small Wheel (NSW)
upgrade, dedicated to precision tracking. A large surface of the forward regions of the Muon
Spectrometer will be equipped with 8 layers of MM modules forming a total active area of
1200 m2. The NSW is scheduled to be installed in the forward region of 1.3 < |η| < 2.7 of
ATLAS during the second long LHC shutdown. The NSW will have to operate in a high
background radiation region, while reconstructing muon tracks as well as furnishing
information for the Level-1 trigger. The project requires fully efficient MM 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. Results and characterization with cosmic rays of the first series module will also be presented.

Primary authors

ATLAS Muon Collaboration Christos Lampoudis (Université Paris-Saclay (FR))

Presentation materials