Feeds

WIMP-seeking detector flooded

It’s okay, that’s what’s meant to happen

Top three mobile application threats

A South Dakota-based dark matter experiment has taken a large step towards go-live, with a detector lowered into its water tank ahead of observations beginning next year.

The Large Underground Xenon (LUX) detector was delivered in July. The underground location is designed to shield the detector from cosmic radiation, while the water tank is there to filter out the small amounts of natural radiation emitted by the surrounding rock.

The 6m x 7.6m (25 feet in diameter, 20 feet tall) tank is filled with “ultra-pure, de-ionized water”, which El Reg supposes caused a distressing price hike for hipsters who won’t drink anything but.

Scientists operating LUX hope it will be sensitive enough to detect WIMPs, theorised as one of the explanations for the Universe’s missing mass (around 80 percent of the matter calculated to exist hasn’t been observed yet).

Twenty photo-multiplier tubes, each sensitive enough to detect a single photon, line the water tank. Their job is to provide error correction: should a high-energy particle make it all the way through the rock and water, its tiny flash of light will correspond with a collision event in LUX, alerting scientists to disregard a non-WIMP interaction.

LUX itself is installed in a cryostat at -160&degF, with another 122 photo-multiplier tubes to detect WIMP interactions. If collisions between WIMPs and Xenon atoms take place, scientists expect to see two flashes of light, one at the point of impact and a second in a layer of Xenon gas at the top of the detector.

More information about the LUX Dark Matter Collaboration can be found here. ®

3 Big data security analytics techniques

More from The Register

next story
KILLER SPONGES menacing California coastline
Surfers are safe, crustaceans less so
Opportunity selfie: Martian winds have given the spunky ol' rover a spring cleaning
Power levels up 70 per cent as the rover keeps on truckin'
Liftoff! SpaceX Falcon 9 lifts Dragon on third resupply mission to ISS
SpaceX snaps smartly into one-second launch window
KILLER ROBOTS, DNA TAMPERING and PEEPING CYBORGS: the future looks bright!
Americans optimistic about technology despite being afraid of EVERYTHING
Discovery time for 200m WONDER MATERIALS shaved from 4 MILLENNIA... to 4 years
Alloy, Alloy: Boffins in speed-classification breakthrough
R.I.P. LADEE: Probe smashes into lunar surface at 3,600mph
Swan dive signs off successful science mission
Elon Musk's LEAKY THRUSTER gas stalls Space Station supply run
Helium seeps from Falcon 9 first stage, delays new legs for NASA robonaut
prev story

Whitepapers

Securing web applications made simple and scalable
In this whitepaper learn how automated security testing can provide a simple and scalable way to protect your web applications.
3 Big data security analytics techniques
Applying these Big Data security analytics techniques can help you make your business safer by detecting attacks early, before significant damage is done.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Top three mobile application threats
Learn about three of the top mobile application security threats facing businesses today and recommendations on how to mitigate the risk.
Combat fraud and increase customer satisfaction
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.