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arXiv · 2312.14785

PANCAKE: a large-diameter cryogenic test platform with a flat floor for next generation multi-tonne liquid xenon detectors

Adam Brown·Horst Fischer·Robin Glade-Beucke·Jaron Grigat·Fabian Kuger·Sebastian Lindemann·Tiffany Luce·Darryl Masson·Julia Müller·Jens Reininghaus·Marc Schumann·Andrew Stevens·Florian Tönnies·Francesco Toschi
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Abstract

The PANCAKE facility is the world's largest liquid xenon test platform. Inside its cryostat with an internal diameter of 2.75 m, components for the next generation of liquid xenon experiments, such as DARWIN or XLZD, will be tested at their full scale. This is essential to ensure their successful operation. This work describes the facility, including its cryostat, cooling systems, xenon handling infrastructure, and its monitoring and instrumentation. The inner vessel has a flat floor, which allows the full diameter to be used with a modest amount of xenon. This is a novel approach for such a large cryostat and is of interest for future large-scale experiments, where a standard torispherical head would require tonnes of additional xenon. Our current xenon inventory of 400 kg allows a liquid depth of about 2 cm in the inner cryostat vessel. We also describe the commissioning of the facility, which is now ready for component testing.

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Adam Brown, Horst Fischer, Robin Glade-Beucke, Jaron Grigat, Fabian Kuger, Sebastian Lindemann, Tiffany Luce, Darryl Masson, Julia Müller, Jens Reininghaus, Marc Schumann, Andrew Stevens, Florian Tönnies, Francesco Toschi. 2023-12-22. PANCAKE: a large-diameter cryogenic test platform with a flat floor for next generation multi-tonne liquid xenon detectors. https://doi.org/10.1088/1748-0221%2F19%2F05%2Fp05018

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