Image: Image: Inside of the newly constructed CCM200 detector showing the 200 PMT light sensors (circles) and the interior walls coated with a special material to convert the argon scintillation light into visible light that can be detected by the photo-multiplier tubes. Dark sector particles that are produced in the beam travel to the detector and then interact in the argon producing a clear scintillation light signal that is recorded by the data acquisition system. There is an outer veto region to reject events coming from the outside such as cosmic rays.
Source: Los Alamos National Laboratory news feature
The first physics results from the Coherent CAPTAIN-Mills (CCM) experiment, led by Los Alamos and research institutions from the United States, United Kingdom and Mexico, including University of Florida Physics collaborators, powerfully demonstrate the capability of the accelerator-based dark matter search underway at the Los Alamos Neutron Science Center. The results garnered from the 2019 engineering run of a prototype detector, CCM120, were recently published in Physical Review Letters and Physical Review D.