Abstract
Liquid Argon Time Projection Chambers are very promising detectors for neutrino and astroparticle physics due to their high granularity, good energy resolution and 3D imaging, allowing for a precise event reconstruction. ICARUS T600 is the largest liquid Argon (LAr) TPC detector ever built (~600 ton LAr mass) and is presently operating underground at the LNGS laboratory. This detector, internationally considered as the milestone towards the realization of the next generation of massive detectors (~tens of ktons) for neutrino and rare event physics, has been smoothly running since summer 2010, collecting data with the CNGS beam and with cosmics. The status of this detector will be shortly described together with the intent to adopt the LAr TPC technology at CERN as a possible solution to the sterile neutrino puzzle.
Highlights
The Liquid Argon Time Projection Chamber (LAr-TPC), first proposed by C
In a Liquid Argon TPC the ionization electrons produced by each ionizing event taking place in highly purified liquid Argon (LAr) can be transported by an uniform electric field and can be collected by 3 parallel wire planes, placed at the end of the drift path with wires oriented at different directions
The ICARUS T600 LAr-TPC detector, presently taking data in Hall B of the Gran Sasso National underground Laboratory (LNGS), is the largest liquid Argon TPC ever built: it consists of a large cryostat split into two identical, adjacent modules, with internal dimensions 3.6 × 3.9 × 19.9 m3 each
Summary
The Liquid Argon Time Projection Chamber (LAr-TPC), first proposed by C. In a Liquid Argon TPC the ionization electrons produced by each ionizing event taking place in highly purified LAr can be transported by an uniform electric field and can be collected by 3 parallel wire planes, placed at the end of the drift path with wires oriented at different directions. The passage of charged particles through the LAr generates a copious prompt ultra-violet scintillation light signal that can be detected using immersed PMTs. The LAr-TPC is a continuously sensitive and self triggering detector, characterized by high granularity and spatial resolution, similar to bubble chambers. The signal collected on the wire planes can provide a precise tridimensional reconstruction of the recorded particle trajectory. The LAr-TPC detector is an excellent calorimeter and it can provide an efficient particle identification based on the density of the energy deposition at the end of the particle range
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