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ATRAPAir Transportable Radiac Package (USAF)
ATRAPAntimatter Trap
ATRAPAsymmetric Threat Response and Analysis Program (US DoD)
ATRAPAlliance for Transportation Research
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In a paper published online in Physical Review Letters November 16, the ATRAP group reports centrifugally separating antiprotons from electrons, which could provide a new way to isolate low-energy antiprotons for making antihydrogen.
Athena and Atrap share the goal of producing antihydrogen atoms at low energies, in a magnetic trap, and comparing the energy levels and behavior of antihydrogen with hydrogen.
Atrap, which includes members of an earlier collaboration whose experiments at CERN began in 1986, has essentially the same goals as Athena, but with a different approach toward the way antiprotons and positrons are captured and brought together to form antihydrogen.
Atrap physicists will first attempt to reduce the momentum of antiprotons and positrons, then hold the cold ingredients in the same container so they can combine to create anti-H.
A later phase of the Atrap experiments will use a superconducting solenoidal magnet with several metal coils spiraling the magnet in an array of complicated patterns, and a clear plastic sheet with photomultipliers surrounding it.
The Atrap physicists aim to build nondestructive tests, such as the use of lasers to find and measure anti-H's properties, and the further confinement of the anti-H atom.
Atrap is set - and it's over to Miss Marple to unmask the killer...
Now, a second CERN group, known by the acronym ATRAP, has independently made slow-paced antihydrogen atoms.