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arXiv · 1009.4908

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

S. Horikawa·A. Badertscher·L. Kaufmann·M. Laffranchi·A. Marchionni·M. Messina·G. Natterer·A. Rubbia
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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.

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S. Horikawa, A. Badertscher, L. Kaufmann, M. Laffranchi, A. Marchionni, M. Messina, G. Natterer, A. Rubbia. 2010-09-24. Feasibility of high-voltage systems for a very long drift in liquid argon TPCs. https://doi.org/10.1088/1742-6596%2F308%2F1%2F012027

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