The Atlas Electromagnetic Calorimeter
  GOAL:  The electromagnetic calorimeter detects and identifies electrons and photons, and measures their energy. Context: The technology which is used offers a fast response to detected particles and an excellent stability.   Contribution by IRFU Responsabilities: -Bruno Mansoulié: co-convenor of the working group in the conceptual phase; Task Leader for the construction of the barrel electromagnetic calorimeter (1997-2003).
GOAL Muons can penetrate through the calorimeters and reach the outermost part of ATLAS, known as the muon spectrometer. This spectrometer surrounds the calorimeters and measures the trajectories of muons to determine  their direction, their electric charge and their momentum. This happens inside a volume of magnetic field produced by superconducting toroïd magnets. The detection elements (the muon chambers) are made of thousands of metal tubes equiped with a central wire and filled with gas.
IRFU responsibilities IRFU was responsible for the integration of the eight superconducting coils in their cold mass and in their cryostat. The laboratory is also in charge of defining the assembly process, of the design of the handling equipment for the coils in the toroid, and for the quality control of assembly in the cavern.

 

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