Speaker
Description
Optical readout of large scale dual-phase liquid Argon TPCs is an
attractive and cost effective alternative to charge readout. Following
the successful demonstration of 3D optical readout with the ARIADNE
1-ton detector, the ARIADNE+ experiment was deployed using the protoDUNE
“cold box” at the CERN neutrino platform imaging a much larger active
region of 2mx2m. ARIADNE+ uses 4 Timepix3 cameras imaging the S2 light
produced by 16 novel, patented, glass THGEMs. ARIADNE+ takes
advantage of the raw Timepix3 data coming natively 3D and zero
suppressed with a 1.6 ns timing resolution. Three of the four THGEM
quadrants were visible readout with the fourth featuring a VUV light
image intensifier, thus removing the need for wavelength shifting
altogether. Cosmic muon events were recorded successfully at stable
conditions providing the first demonstration for its use in kton scale
experiments such as DUNE.
In my talk I will be discussing in detail the innovative ideas that make
ARIADNE+ unique and the benefits that come with these technologies.
These include, but are not limited to, TPX3Cams, PEN wavelength
shifting, a chemically etched stainless steel extraction grid, Invar
support structure and a new way to manufacture glass THGEMs. Future
plans and a road map towards an even larger demonstration using the ProtoDUNE
cryostat itself for a dedicated dual phase optical run will also be
discussed.
