Abdulmutallab then passed through a walk-through metal detector and put his shoulder bag through an X-ray screening machine, Demuren said.
As dark matter particles steam through the detector, scientists hope that a few will collide with the argon atoms.
BBC: Dark Matter: Experiment to shed light on dark particles
Naturally occurring neutrinos from cosmic rays, supernovae and the sun stream through the detector at the same time.
Such a particle, if produced in his apparatus, would cruise through a detector made of barium-phosphate glass and leave a trail of damage along the way.
Demuren said the suspect underwent regular screening -- walking through a metal detector and having his shoulder bag scanned through an X-ray machine.
Sometimes, you have to pass through a metal detector or a police search as you go through the front doors.
Through a metal detector and into a large hall, I took in the scene.
Spectators had to pass through a metal detector and then were searched again before entering the courtroom.
When cosmic rays pass through the NOvA detector, they leave straight tracks and deposit well-known amounts of energy.
Once, arriving for a TV interview at the Australian parliament, he refused to walk through a metal detector.
When your name was called, you were passed through a metal detector and ferried upstairs to an undecorated 6-by-6 cubicle.
He then grabs one of his smaller bags and attempts to rush through the metal detector, but she blocks his path.
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He is now 15 years old and attends a New York City public high school where two armed police officers stand guard at the entrance and students need to go through a metal detector every day as they enter the building.
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Later this year, Fermilab, outside of Chicago, will start sending a beam of neutrinos 500 miles through the earth to the NOvA detector near the Canadian border.
After passing through the shelter's metal detector and enjoying a long wait in a bucket seat, I was greeted by a tall man with a kind face.
Mass spectrometry works by evaporating molecules, giving them an electric charge, and then applying an electric field to them and accelerating them through a vacuum chamber to a detector.
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Tata said the extra security measures would not have stopped the attackers from entering the building because they went through a kitchen door that was not monitored by a metal detector.
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As luck would have it, a project called NOvA, which should start collecting data in the spring of 2013, will send neutrinos through the Earth's crust from Batavia to an underground detector 810km away in Minnesota.
The metal detector at its entrance was unplugged when your correspondent passed through it on October 20th.
That is the goal at a shop a few miles down the road from U.S. Genomics, at Harvard, where biophysicist Daniel Branton and colleagues hope to design a better detector by passing DNA, one letter at a time, through a microscopic "nanopore" in a silicon membrane.
Open Harbor, in San Carlos, California, wants to be global trade's equivalent of a radar detector, replacing with a fast Web service the practice of thumbing through thick tomes of trade rules and restrictions.
That's the goal at a shop at Harvard, where Daniel Branton, a biophysicist, and his colleagues hope to design a better detector by passing DNA--a letter at a time--through a microscopic "nanopore" in a silicon membrane.
The state-of-the art detector, which weighs 8, 500 kilograms, is expected to stay in operation through the lifetime of the space station, until 2020 or longer.
CNN: Space station detector gives first clues to 'dark matter'
Since May 2011, the detector -- which is mounted outside the space station -- has been sifting through matter, antimatter and other particles as it circles the Earth, with the data sent to hundreds of scientists on the ground for analysis.
CNN: Space station detector gives first clues to 'dark matter'
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