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A milestone for the ATLAS experiment

LMU sent 16 detector modules built for first New Small Wheel

15.11.2019

Earlier this month, the delivery of the 16th Micromegas quadruplet module complete the LMU contribution to the first of two New Small Wheels of the ATLAS Muon Spectrometer. The New Small Wheels are an essential part of the first major upgrade of the ATLAS experiment for the High-Luminosity LHC. At CERN, the 16 modules will now be equipped with electronics for readout, detector control, and alignment, with a cooling system and with all kinds of electrical services for high-voltage, low-voltage supplies and fibre-optical readout. Finally they will be assembled together with further modules produced by groups in Italy, France, Greece andRussia small-strip thin-gap chambers produced by groups in Canada, Chile, China, Israel to form wedges. These wedges are finally mounted to the already prepared support structure (see picture). The first New Small Wheel shall be installed in the ATLAS detector by the end of next year. This procedure takes about twelve more months and runs in parallel to the production of another batch of 16 Micromegas quadruplet modules here in our group for the second New Small Wheel which shall be installed a year later.

Further reading

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The last three LMU Micromegas modules before being shipped to CERN. Credits: R.Hertenberger

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New Small Wheel support structure at CERN. Credits: Sascha Mehlhase

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First New Small Wheel sector installed. Credits: Mauro Iodice