Aaron Chou

Aaron Chou is a Fermilab scientist.

Axion space

Flashback Friday: In February 2018, scientists working on quantum sensor R&D to search for axion dark matter rejoice in their new space in Lab B. Among them is the late, great Alvin Tollestrup, second from right. people Photo: Leticia Shaddix

Flashback Friday: In February 2018, scientists working on a project to search for axions rejoice in their new space in Lab B. Among them is the late, great Alvin Tollestrup, second from the right.

The Fermilab Holometer has reached its design luminosity, building up more than 1 kilowatt of infrared laser power stored in a 40-meter-long Michelson interferometer. This light intensity corresponds to more than 10 billion trillion photons per second hitting the interferometer optics. It also allows scientists to measure the optics’ positions to a resolution 1,000 times smaller than the size of a proton.