The first one "220" has a nice discussion, in particular a comment by pfdietz: > It increases the rate of production of neutral antihydrogen from antiprotons a

The first one "220" has a nice discussion, in particular a comment by pfdietz: > It increases the rate of production of neutral antihydrogen from antiprotons and positrons by a factor of 8. It doesn't increase the efficiency of production of antiprotons, which is the extremely inefficient, energy intensive part.