ATRAP experiment

The Antihydrogen Trap (ATRAP) collaboration at the Antiproton Decelerator facility at CERN, Geneva, was responsible for the AD-2 experiment.

Later ATRAP members pioneered accurate hydrogen spectroscopy and observed the first hot antihydrogen atoms.

In this process, the positrons lose much of their energy so that it is no longer necessary (as in ATHENA) to decelerate further with collisions in gas.

[5] ATRAP had an Ioffe trap, which attempted to store the electrically neutral antihydrogen using a magnetic quadrupole field.

Laser spectroscopy was intended to be performed on antihydrogen stored in the Ioffe trap, however no publication was ever made.

ATRAP collaborators next to the apparatus that first trapped, cooled and stacked antiprotons at CERN's AD
A post-doctoral fellow on the ATRAP experiment, with the Penning trap apparatus for trapping antiprotons.