Up in the Air
One of the detectors is seen here, suspended by a crane.
After transport, scientists check the equipment to make sure it wasn’t damaged. They will do this again after helicopters transport the SDs to their final destination.
Scientists also check the sensitive electronics before operations begin.
Home Sweet Home
A helicopter transports the detectors to their new home, where scientists will check the electronics before leaving them. This image is from the deployment of the first batch of TA detectors.
The sensitive photomultiplier tubes (PMTs) capture and amplify light within the TA project's fluorescent telescopes. These telescopes look for ultraviolet light in the night sky that is created by cosmic-ray collisions with the atmosphere.
For each mirror, 256 PMTs sit in a box. Light reflects from the mirror to the PMTs, which amplify the signal.
Callahan poses near one of the cloverleaf mirrors used in the fluorescent telescopes that look for flashes of light created when cosmic rays interact with atoms in Earth's atmosphere.
Sets of Mirrors
Fourteen sets of mirrors are part of the Telescope Array, while another 10 make up the Telescope Array Low Energy Extension, an upgrade to the TA that will search for cosmic rays of lower energies.
Robert Cady, an assistant research professor at the University of Utah who is working on the TA experiment, stands near one of the TA telescope mirrors after the sun has gone down.
After the sun sets over the desert, the fluorescent telescopes go to work.