Dear TIPP 2014 secretariat,
I am one of the author of the abstracts already accepted for an Oral presentation in the track Sensors: 1d) Photon Detectors. The title is: "Light-yield results of 1 liter liquid argon scintillation detector based on Silicon Photo Multipliers operating at cryogenic temperature"
I am contacting you to kindly ask if there is still the possibility to submit, in addition to the already accepted abstract, also a poster contribution to your conference. The poster could be inside the lines of the themes II (experiments) or IV (emerging technologies).
I report here below an abstract, so that you can evaluate it.
Looking forward to have a feedback from your side, Cheers,
Maddalena Antonello
Authors: C. Vignoli M. Antonello E. Segreto
Co-authors: ICARUS collaboration
Poster Proposal for the Session: II (Experiments) or IV (emerging technologies)
ICARUS T600 liquid argon purification system
Authors: C. Vignoli M. Antonello E. Segreto
Co-authors: ICARUS collaboration
ABSTRACT
The ICARUS T600 Module is the largest LAr detector (760 t LAr mass) ever realized. It was installed and successfully operated for 3 years inside the underground Gran Sasso Laboratory to study neutrino nature with the CERN to Gran Sasso beam and atmospheric neutrino interactions. The ICARUS detector is a liquid argon time projection chamber with unique features that make it an ideal device to be used for several particle physics applications. One of the most important issues for the success of the detector technology is the liquid argon purity: for a plant of the ICARUS T600 Module size it is necessary to keep the residual electronegative impurity content to a level of the order of 0.1 parts per billion or better all over the argon volume, thus allowing the ionization tracks, created by interacting particles inside LAr, to be transported without suppression along the drift path. The solution developed by the ICARUS Collaboration is essentially based on the following key elements: use of commercial filters, carefully selected among the many availabilities on the market and operated directly in liquid phase; adoption of ultra high vacuum materials and techniques; proper choice of the commissioning procedures; continuous argon purification through re-circulation of both the liquid and the gas phase at regime. In the poster we present the ICARUS T600 Module and describe in details the solutions adopted for the LAr re-circulation and purification systems that permitted to reach impressive results in terms of LAr purity thus representing a milestone for future projects and developments at higher LAr mass scale.