WA105 experiment (LBNO-DEMO)

The most important remaining issues in neutrino oscillation physics are the determination of the neutrino mass hierarchy, CP violation and the neutrino anomalies related to the possible existence of sterile neutrinos. Most of the current experimental proposals are based on liquid Argon (LAr) TPC detectors. A mandatory milestone in view of any future long baseline experiment is a concrete prototyping effort towards the envisioned large-scale detectors, and an accompanying campaign of measurements aimed at assessing the systematic errors that will be affecting their intended physics programme.



WA105 3 x 1 x 1 m3 prototype being installed at CERN

The WA105 experiment (also called LBNO-DEMO) aims at demonstrating the operation of the novel large liquid argon double-phase time projection chamber (DLAr TPC). A 6 x 6 x 6 m3 dual-phase LAr TPC detector will be built and operated in a new CERN test area with charged particles beam capability as a first step towards the development of future large scale neutrino LAr detectors.

This will be done in 2 steps: (1) construction of a 3 x 1 x 1 m3 prototype (~ 4.2 ton), which is currently under installation at CERN and will take data in 2016 and (2) with the operation of the WA105 experiment 6 x 6 x 6 m3 detector (~300 ton) that will be exposed to a charged particle test-beam in 2018.



WA105 6 x 6 x 6 m3 LAr TPC with the inner detector inside the cryostat