What question did this study set out to answer?

To design a multi-mirror gas Cerenkov counter for improved detection at GRAAL.

March 5, 2026Open Access

The Design of a Gas Cerenkov Particle Detector for the Graal High Energy Polarised Photon Facility

Key Points

To design a multi-mirror gas Cerenkov counter for improved detection at GRAAL.
Reviewed project guidelines for impact on mechanical design
Designed the bank of mirrors using computer aided engineering (CAE)
Conducted optical ray-tracing for performance assessment
Selected materials for optimal detector performance
Performed structural analysis to verify optical reproducibility
Enhanced mechanical design features based on project guidelines
Improved optical performances predicted through ray-tracing
Materials selection aligned with structural integrity requirements

Abstract

We discuss the design of a multi-mirror gas Cerenkov counter to be added to the existing GRAAL apparatus at the European Synchrotron Radiation Facility in Grenoble. The guidelines of the project are reviewed and their impact on the mechanical design is outlined. Several technical procedures adopted to design the bank of mirrors and their support: computer aided engineering (CAE), optical ray-tracing, materials selection, are discussed in detail. Structural analysis has been done to assess reproducibility of optical performances of the detector.

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