The LUX detector, located deep underground in Lead, S.D., uses a tank of 370 kilograms of
ultra-pure liquid xenon to detect interacting particles by picking out blips of light they produce.
The new instrument, containing 3.5 tons of
ultra-pure noble gas
Xenon cooled to nearly -140 degrees Fahrenheit to make it
liquid, is installed inside a 10 - meter - wide water shield to protect it from radioactive background radiation.