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

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

Nov 15, 2022 324 likes •468 views

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

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SLIDE 1

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

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SLIDE 2

Jared Vann NNN17, Warwick

Optical Readout Method

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  • 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.

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SLIDE 3

Jared Vann NNN17, Warwick

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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

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SLIDE 4

Jared Vann NNN17, Warwick

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EMCCD s Laser HV FT Turbo Pump Beam Window PMTs THGEM Field Shaping Rings

Detector Design

500µm

  • 1500L Cryostat
  • 53x53x80cm3 active TPC

volume

  • Self

contained cryogenic recirculation and purification system

  • High Voltage feedthrough
  • Nominal E Field 0.5kV/cm
  • 4x Andor EMCCDs
  • 4x 8” Hamamatsu PMTs
  • 16

pad segmented THGEM

  • Nd:YAG

laser calibration system

THGEM Detail Beam Window Detail

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SLIDE 5

Jared Vann NNN17, Warwick

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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.
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SLIDE 6

Jared Vann NNN17, Warwick

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Commissioning at the Liverpool LAr Facility

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SLIDE 7

Jared Vann NNN17, Warwick

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Thank-You Video: LAr interactions from Prototype

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SLIDE 8

Jared Vann NNN17, Warwick

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Extra - 3D Reconstruction (Prototype Results)

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SLIDE 9

Jared Vann NNN17, Warwick

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Extra - Expected Energy Containment (Very Preliminary)

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SLIDE 10

Jared Vann NNN17, Warwick

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Extra - Detector Simulation (Very Preliminary)

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SLIDE 11

Jared Vann NNN17, Warwick

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Extra - Beam Line Simulation (Very Preliminary)

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SLIDE 12

Jared Vann NNN17, Warwick

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Extra - T9 Beamline

ARIADNE Detector

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SLIDE 13

Jared Vann NNN17, Warwick

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Extra - Purification System Testing on Pilot Cryostat