Dark matter detector now underground, underwater, ready

The world’s most sensitive dark-matter detector

A ton of liquid xenon inside a six-foot water-filled double-walled titanium cylinder — all of it now submerged in a tank of ultrapure water — should be able to detect a particle of dark matter when data collection begins early in 2013. Credit: Sanford Lab   

November 15, 2012 | By Kevin Stacey

Physicists from Brown and 16 other institutions in the United States and Europe are almost ready to begin data collection using the world's most sensitive dark-matter detector. The detector, nearly a mile underground in South Dakota, is sitting inside a stainless steel tank of ultrapure water and undergoing tests. Data collection should begin early in 2013.