Feasibility of high-voltage systems for a very long drift in liquid argon TPCs

Abstract

Designs of high-voltage (HV) systems for creating a drift electric field in liquid argon TPCs are reviewed. In ongoing experiments systems capable of approx. 100 kV are realised for a drift field of 0.5-1 kV/cm over a length of up to 1.5 m. Two of them having different approaches are presented: (1) the ICARUS-T600 detector having a system consisting of an external power supply, HV feedthroughs and resistive voltage degraders and (2) the ArDM-1t detector having a cryogenic Greinacher HV multiplier inside the liquid argon volume. For a giant scale liquid argon TPC, a system providing 2 MV may be required to attain a drift length of approx. 20 m. Feasibility of such a system is evaluated by extrapolating the existing designs.

8 pages, 13 figures, to appear in Proc. of 1st International Workshop towards the Giant Liquid Argon Charge Imaging Experiment (GLA2010), Tsukuba (Japan), March 2010

References in corpus (2)

• Underground Neutrino Detectors for Particle and Astroparticle Science: the Giant Liquid Argon Charge Imaging ExpeRiment (GLACIER)
• ArDM: a ton-scale liquid Argon experiment for direct detection of Dark Matter in the Universe

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• Status and New Ideas Regarding Liquid Argon Detectors
• Liquid Argon Time Projection Chamber Research and Development in the United States
• Charge and Light Production in the Charge Readout System of a Dual Phase LAr TPC
• Future liquid Argon detectors