Ponente
Descripción
Large liquid argon (LAr) volumes are integral to modern particle and nuclear physics experiments, specifically for detecting weakly interacting particles such as neutrinos and dark matter. Ensuring detector performance and optimal detection efficiency requires comprehensive LAr characterization and efficient monitoring of recirculation systems. High-resolution temperature monitoring systems, capable of detecting gradients as small as a few hundredths of a degree, reveal key details about purification quality and swiftly signal changes in recirculation operations. In addition, these temperature measurements, coupled with computational fluid dynamic (CFD) simulations, are instrumental for detector calibration.
IFIC has advanced large-scale temperature monitoring systems (TMS) tailored for liquid argon time projection chambers (LArTPCs), leveraging a decade of expertise in resistance temperature detection (RTD) techniques. Key aspects, including temperature readout hardware, cabling, RTD supports, and calibration systems, are meticulously designed to achieve the high resolution required. IFIC’s TMS has been deployed on a large scale, demonstrated by its operation at CERN, monitoring temperatures along an 8-meter vertical column with 3 mK resolution in the DUNE prototype. This setup offers exceptional resolution with extensive sensor arrays, making it ideal for large TPC instrumentation. Concurrently, ongoing R&D on fiber Bragg grating (FBG) sensors aims to establish a Fiber-based TMS (FTMS) for high electric field environments, promising to expand the temperature measurement points while maintaining the RTD system’s resolution.
