High-Temperature Superconducting Level Meter for Liquid Argon Detectors

TL;DR

This paper introduces a high-temperature superconducting level meter for liquid argon detectors, demonstrating improved accuracy, stability, and linearity over traditional capacitive probes used in neutrino and dark matter experiments.

Contribution

The study presents a novel superconducting level meter that outperforms conventional devices in stability and accuracy for cryogenic noble liquid measurements.

Findings

Superconductor exhibits linear response to liquid level.

Device shows high stability and accuracy.

Potential advantages over traditional level meters.

Abstract

Capacitive devices are customarily used as probes to measure the level of noble liquids in detectors operated for neutrino studies and dark matter searches. In this work we describe the use of a high-temperature superconducting material as an alternative to control the level of a cryogenic noble liquid. Lab measurements indicate that the superconductor shows a linear behaviour, a high degree of stability and offers a very accurate determination of the liquid volume. This device is therefore a competitive instrument and shows several advantages over conventional level meters.