ALPS II will try to detect dark matter by filtering light with an advanced device
It is very difficult to study dark matter because it is invisible. However, not only is dark matter invisible, it also does not interact with ordinary matter except by gravity. To investigate dark matter, which has become very difficult to investigate due to these properties, researchers started the ALPS II experiment at Deutsches Electronen-Synchrotron (DESY).
A recent study of Einstein Rings claims that the axes are closer to what we see in the universe. Building on this claim, the ALPS II experiment hopes that at least some of the photons in the laser will spin into axes when they encounter the magnetic field. But since dark matter doesn’t interact with anything, to detect this, ALPS II will filter all unconverted light with an advanced instrument.
The detectors in the tunnel are designed to be extremely sensitive. DESY’s Axel Lindner compares this experiment to the probability that all 33 dice rolls are the same. However, if any light leaks through the wall, it can profoundly affect how we understand the universe.