ARIADNE: A Photographic 1-ton Two-Phase Liquid Argon Detector - PowerPoint PPT Presentation

ARIADNE: A Photographic 1-ton Two-Phase Liquid Argon Detector Jared Vann (on behalf of the ARIADNE team) University of Liverpool http://hep.ph.liv.ac.uk/ariadne

Optical Readout Method - Two-phase LArTPC design. - THGEM in gas phase amplifies drifted charge (up to ~100x). - Secondary scintillation light (S2) emitted in THGEM. Benefits: - High resolution — each EMCCD sensor is 1024x1024 pixels (run with 4x4 binning ≈ 1mm resolution). - Sensitivity to low energies — gain generated in the THGEM and the single-photon sensitivity of the EMCCDs. - Very low noise — EMCCDs are decoupled from TPC noise sources. - Ease of access — EMCCDs and future optical readouts can easily be swapped in and out, even during cryogenic running. 2 NNN17, Warwick Jared Vann

Prototype Results - Proof of Concept K. Mavrokoridis @ NNN14 https://indico.in2p3.fr/event/10162... “First Demonstration of Imaging Cosmic Muons in a Two-Phase Liquid Argon TPC using an EMCCD Camera and a THGEM” https://doi.org/10.1088/1748-0221/10/10/P10004 3 NNN17, Warwick Jared Vann

Detector Design EMCCD s Laser - 1500L Cryostat 53x53x80cm 3 active TPC - HV FT volume Turbo 500µm - Self contained cryogenic Pump recirculation and purification system - THGEM Detail High Voltage feedthrough THGEM - Nominal E Field 0.5kV/cm - 4x Andor EMCCDs Field Shaping 4x 8 ” Hamamatsu PMTs - Rings - 16 pad segmented Beam Window THGEM - Nd:YAG laser calibration system PMTs Beam Window Detail 4 NNN17, Warwick Jared Vann

Characterisation & Physics Goals - Detector will be characterised in Liverpool with cosmic muons , and a laser calibration system . - ARIADNE will collect data at CERN T9 test beam in 2018 (0.5GeV/c to 3.0GeV/c, e ± , p ± , π ± ). - Show ability to perform PID with optical readout. - Event reconstruction using EMCCD data. - Measurements of the Pion cross-section in liquid argon. - e- 𝛿 separation using EM showers. 5 NNN17, Warwick Jared Vann

Commissioning at the Liverpool LAr Facility 6 NNN17, Warwick Jared Vann

Video: LAr interactions from Prototype Thank-You 7 NNN17, Warwick Jared Vann

Extra - 3D Reconstruction (Prototype Results) 8 NNN17, Warwick Jared Vann

Extra - Expected Energy Containment (Very Preliminary) 9 NNN17, Warwick Jared Vann

Extra - Detector Simulation (Very Preliminary) 10 NNN17, Warwick Jared Vann

Extra - Beam Line Simulation (Very Preliminary) 11 NNN17, Warwick Jared Vann

Extra - T9 Beamline ARIADNE Detector 12 NNN17, Warwick Jared Vann

Extra - Purification System Testing on Pilot Cryostat 13 NNN17, Warwick Jared Vann