ARIADNE: Beam Time and Resources Request

The ARIADNE research programme is based around developing an optical readout system for use in LAr TPC detectors, which could potentially have a number of bene ts over the currently used segmented anode planes - particularly in matters of scalability for future kilo-tonne scale detectors, ease of installation, use and maintenance, and reconstruction resolution. As detailed in our previously submitted Letter of Intent (CERN-SPSC-2016-008 [SPSC-I-244]), ARIADNE itself is a 1-tonne, two-phase LAr TPC detector, designed and built at the University of Liverpool, which uses an array of EMCCD cameras as its optical readout system, alongside PMTs for scintillation light observation and a THGEM for charge readout. Once construction and initial calibration is completed at Liverpool, the detector's capabilities should be fully studied and characterised, and we would like to request 2 weeks of on-beam time at the CERN T9 beam line in the Spring of 2018 for this purpose. Due to the purity requirements and cryogenic nature of the experiment, we would also need an additional 3 weeks prior to the on-beam time for commissioning the detector (which could take place before the beam is turned on, so as to minimise the impact for other beam users), and half a week afterward for decommissioning.