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arXiv · 1511.07726

Attenuation measurements of vacuum ultraviolet light in liquid argon revisited

A. Neumeier·T. Dandl·A. Himpsl·M. Hofmann·L. Oberauer·W. Potzel·S. Schönert·A. Ulrich
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Abstract

The attenuation of vacuum ultraviolet light in liquid argon in the context of its application in large liquid noble gas detectors has been studied. Compared to a previous publication several technical issues concerning transmission measurements in general are addressed and several systematic effects were quantitatively measured. Wavelength-resolved transmission measurements have been performed from the vacuum ultraviolet to the near-infrared region. On the current level of sensitivity with a length of the optical path of 11.6 cm, no xenon-related absorption effects could be observed, and pure liquid argon is fully transparent down to the short wavelength cut-off of the experimental setup at 118 nm. A lower limit for the attenuation length of pure liquid argon for its own scintillation light has been estimated to be 1.10 m based on a very conservative approach.

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A. Neumeier, T. Dandl, A. Himpsl, M. Hofmann, L. Oberauer, W. Potzel, S. Schönert, A. Ulrich. 2015-11-24. Attenuation measurements of vacuum ultraviolet light in liquid argon revisited. https://doi.org/10.1016/j.nima.2015.07.051

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