Researchers have tested the LUX-ZEPLIN (LZ) dark matter detector for the first time and it passed a check-out phase of startup operations with flying colors. This is already the world’s most sensitive dark matter detector and the team plans to collect about 20 times more data in the coming years.
The presence of dark matter is estimated to be around 85% of the total mass of the universe, possibly even shaping the form and movement of galaxies. LZ consists of two nested titanium tanks filled with ten tons of pure liquid xenon, which are viewed by two arrays of photomultiplier tubes (PMTs) capable of detecting faint sources of light. The two titanium tanks are located in a larger detector system to catch particles that might mimic a dark matter signal. It may even help solve the mystery of the universe being an expanding bubble in extra dimensions.
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I’m thrilled to see this complex detector ready to address the long-standing issue of what dark matter is made of. The LZ team now has in hand the most ambitious instrument to do so!,” said Nathalie Palanque-Delabrouille, Berkeley Lab Physics Division Director.
