5.When they reach the axis that the laser pulse is traveling along, they overshoot and end up traveling outward again, producing a wavelike oscillation [see box on precedingpage].
6.For example, my group in Munich demonstrated a BEC “conveyor belt,” using a chip whose structure went well beyond that of a simple trap [see illustration on precedingpage].
7.The other two, PHENIX and STAR, are built around huge, general-purpose devices that fill their three-story experimental halls with thousands of tons of magnets, detectors, absorbers and shielding [see bottom box on precedingpage].