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Mechanical design of the barrel electromagnetic celorimeter of the ALLEGRO full detector concept at the FCC-EE collider.

Number: 0038

Author(s) : ARETIO-ZARATE F., KARST P., ALEKSA M., CHALIFOUR M., BREMER J., NIKIFOROU N., SHAW A.

Summary

ALLEGRO is a general-purpose detector concept for an experiment at FCC-ee featuring a noble-liquid electromagnetic calorimeter (ECAL) as one of its central detectors. Noble-liquid calorimetry is a promising option for future particle physics experiments, applicable to both hadron and lepton colliders. It comprises 1536 multi-layer read-out electrodes, realised as Printed Circuit Boards, and an equal number of absorbers, all immersed in liquefied noble gas at cryogenic temperatures. The absorbers consist of metallic composites, with a lead core and a stainless-steel skin. The electrodes and absorbers in ALLEGRO are straight and inclined relative to the radial direction of the ECAL. This new design is also larger and heavier than previous noble liquid calorimeters, requiring a rethinking of the assembly that supports the detection components. This article presents the design of the new ECAL, the structure that rests within the cryostat, along with the thermomechanical studies conducted to ensure the structural requirements are met.

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Pages: 7 p.

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Details

  • Original title: Mechanical design of the barrel electromagnetic celorimeter of the ALLEGRO full detector concept at the FCC-EE collider.
  • Record ID : 30033919
  • Languages: English
  • Subject: Technology
  • Source: Cryogenics 2025. Proceedings of the 18th IIR International Conference on Cryogenics, Prague, Czech Republic, 7-11 April 2025.
  • Publication date: 2025/04/07
  • DOI: http://dx.doi.org/10.18462/iir.cryo.2025.0038

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