Newly developed ultra-low radiation cables reduce background noise for neutrino and dark matter detectors.
Imagine trying to tune a radio to a single station but instead encountering static noise and interfering signals from your own equipment. That is the challenge facing research teams searching for evidence of extremely rare events that could help understand the origin and nature of matter in the universe. It turns out that when you are trying to tune into some of the universe's weakest signals, it helps to make your instruments very quiet.
"We have pioneered a technique to produce electronic cabling that is a hundred times lower than current commercially available options," said PNNL principal investigator Richard Saldanha."This manufacturing approach and product has broad application across any field that is sensitive to the presence of even very low levels of radioactive contaminants."Small amounts of naturally occurring radioactive elements are found everywhere: in rocks, dirt and dust floating in the air.
After several years of work and hundreds of measurements, the resulting cables are now so free of contaminants that they will not impact the operation of next-generation dark matter and neutrino experiments such as DAMIC-M, OSCURA, and nEXO. The research team points out in their study that low-radioactivity cables can increase the sensitivity of the experiments and even allow more flexibility in detector design.
Planning is already underway to upgrade the highly sensitive DAMIC-M dark matter experiment and the new ultra-pure cables are one of the key improvements scheduled for installation in the detector.
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Quiet cables set to help reveal rare physics eventsImagine trying to tune a radio to a single station but instead encountering static noise and interfering signals from your own equipment. That is the challenge facing research teams searching for evidence of extremely rare events that could help understand the origin and nature of matter in the universe. It turns out that when you are trying to tune into some of the universe's weakest signals, it helps to make your instruments very quiet.
Leer más »