May 31, 2016
The J-PARC neutrino beam, which provides neutrinos and antineutrinos for the T2K experiment, has exceeded 400 kW beam power. A new Main Ring accelerator tune allowed the beam power to exceed the 400 kW threshold on May 20, and the T2K beam ran stably above 400 kW from May 23 until May 27, when the T2K beam shut down for the summer.
Snapshot of J-PARC accelerator status webpage, showing beam power above 400 kW.
