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.
They cut production time to a given number of anti-atoms from 10 weeks to 7 hours by improving the electron cooling, just from this fact it is a bit rich to insist the anti-proton generation is the limiting factor.
Going to the paper itself we can observe that the CERN Antiproton Decelerator can deliver 10^7 antiprotons every 2 minutes. Remembering it previously took 10 weeks to capture 10^4 anti-atoms, I hope you forgive me for not agreeing that the antiproton generation is the source of important inefficiencies.
Now we can make a firecracker's worth of antimatter (by annihilation energy) in a mere two hundred thousand years of continuous production. Super cool stuff though, pun intended.
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[ 4.2 ms ] story [ 26.9 ms ] threadGoing to the paper itself we can observe that the CERN Antiproton Decelerator can deliver 10^7 antiprotons every 2 minutes. Remembering it previously took 10 weeks to capture 10^4 anti-atoms, I hope you forgive me for not agreeing that the antiproton generation is the source of important inefficiencies.