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Bottom view of the LEGEND-200 liquid argon cryostat and the enclosing water tank. The inner walls of the water tank and the outer wall of the cryostat are covered with a wavelength-shifting mirror film. The purpose is to shift and reflect the light produced by muons via the Cherenkov effect in the water. The photons are detected by photosensors. The purpose of this detector component is to detect and identify cosmic ray muons, some of which still reach the experiment despite being located deep underground the Gran Sasso mountain. (fyi: The muon flux is reduced by a factor 106 (one million) by the rock). If not identified, the muon induced events could mimic the searched signal events.

This gleaming experiment may solve the cosmic mystery of antimatter

12 January 2022

The universe is filled with so much more matter than antimatter. The LEGEND experiment, photographed by Enrico Sacchetti, will soon start trying to unravel this conundrum
CERN

Peek inside a gilded cage of liquid argon made to spot neutrinos

1 November 2017

This huge shiny cube is just a 1/20th scale model of the planned DUNE neutrino detector. It will be filled with liquid argon to catch these elusive particles

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