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arXiv · 1010.2482

Stable operation with gain of a double phase Liquid Argon LEM-TPC with a 1 mm thick segmented LEM

A. Badertscher·A. Curioni·S. Horikawa·L. Knecht·D. Lussi·A. Marchionni·G. Natterer·F. Resnati·A. Rubbia·T. Viant
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Abstract

In this paper we present results from a test of a small Liquid Argon Large Electron Multiplier Time Projection Chamber (LAr LEM-TPC). This detector concept provides a 3D-tracking and calorimetric device capable of charge amplification, suited for next-generation neutrino detectors and possibly direct Dark Matter searches. During a test of a 3~lt chamber equipped with a 10$\times$10~cm$^2$ readout, cosmic muon data was recorded during three weeks of data taking. A maximum gain of 6.5 was achieved and the liquid argon was kept pure enough to ensure 20~cm drift (O(ppb)~O$_2$ equivalent).

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A. Badertscher, A. Curioni, S. Horikawa, L. Knecht, D. Lussi, A. Marchionni, G. Natterer, F. Resnati, A. Rubbia, T. Viant. 2010-10-12. Stable operation with gain of a double phase Liquid Argon LEM-TPC with a 1 mm thick segmented LEM. https://doi.org/10.1088/1742-6596%2F308%2F1%2F012016

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