This gleaming experiment may solve the cosmic mystery of antimatter


Bottom view into the lock system with the inner fiber barrel moved into the lock in preparation for the deployment into the liquid argon. (NB. No germanium detectors are mounted in this commissioning operation)

Two views of LEGEND’s scintillation light detector fibre modules (above and below) with light-capturing fibres (green), part of the equipment needed to try to spot antineutrinos annihilating each other

Enrico Sacchetti

Photographer Enrico Sacchetti

THESE gleaming images, taken by photographer Enrico Sacchetti, show key components of an experiment that could finally shed light on one of the biggest mysteries in modern physics.

LEGEND is an international project that aims to explain why there is so much more matter than antimatter in the universe. Starting this year, its first stage, called LEGEND-200, will use highly sensitive germanium detectors to collect data for the next five years at the Gran Sasso National Laboratory in Italy.

Side view of the inner fiber barrel and the open lock system. It serves to detect the scintillation light from the liquid argon to discriminate neutrinoless double beta decay signal events from background events.

Enrico Sacchett

Antimatter is composed of antiparticles that have the same mass as…

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