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

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).

arXiv comment7 pages, 6 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 (3)

• ArDM: a ton-scale liquid Argon experiment for direct detection of Dark Matter in the Universe
• Oxygen contamination in liquid Argon: combined effects on ionization electron charge and scintillation light
• Operation of a double-phase pure argon Large Electron Multiplier Time Projection Chamber: comparison of single and double phase operation

Cited by in corpus (7)

• First operation of a double phase LAr Large Electron Multiplier Time Projection Chamber with a two-dimensional projective readout anode
• Long-term operation of a double phase LAr LEM Time Projection Chamber with a simplified anode and extraction-grid design
• High Voltage in Noble Liquids for High Energy Physics
• Recent advances with THGEM detectors
• First in-beam studies of a Resistive-Plate WELL gaseous multiplier
• Future liquid Argon detectors
• GLACIER and related R&D