Attenuation measurements of vacuum ultraviolet light in liquid argon revisited

作者：Neumeier A; Dandl T; Himpsl A; Hofmann M; Oberauer L; Potzel W; Schoenert S; Ulrich A^*

来源：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , 2015, 800: 70-81.

DOI：10.1016/j.nima.2015.07.051

• Liquid argon
• Scintillation detectors
• Vacuum ultraviolet
• Attenuation length

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 urn. 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.

• 出版日期2015-11-11