Scientists have developed new tools that will help find signs of neutrinos in detectors located on the Earth’s surface.
The new method combines several data sieving and image reconstruction techniques. The principle of operation is similar to how CT scanners reconstruct 3D images of internal organs from 2D slice-like images of the human body. Thanks to the new method, scientists can isolate the neutrino signals generated by the particle accelerator against the backdrop of the “web” of tracks that appear due to cosmic rays. The experiment showed that when using the new method, the tracks of the interaction of electrons and neutrinos paired with the corresponding light signals from photomultipliers are clearly distinguished from the many tracks that create cosmic rays.
According to the US Department of Energy, there are about 20,000 times more particles from this “noise” than neutrino interactions in the detector. Filtering out cosmic ray trails should improve experiments on the Earth’s surface aimed at understanding the behavior of subatomic neutrinos.
In a new study, scientists have developed a new technique for the MicroBooNE, one of three detectors that track neutrinos emitted by an accelerator at Fermi Lab. However, the new approach should work on all ground-based neutrino detectors, where cosmic rays can obscure the signals. The method will benefit the entire neutrino research program in the United States, the department stressed.