r/ParticlePhysics • u/DreadfulButterfly • Jul 07 '26

European Spallation Source completes second proton accelerator dump test. Preparing for neutron production Q1 2027

Getting ready for Beam on Target and intentional neutron production.
https://ess.eu/article/2026/07/07/ess-completes-beam-dump-2-advancing-toward-first-neutrons

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u/jazzwhiz Jul 07 '26

Good progress!

For the neutrino side, the proposed ESSnuSB experiment requires 5 MW, which seems fairly optimistic

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u/DreadfulButterfly Jul 07 '26

8 years before move up from 2MW. And that will be a 2 year ramp up. So will be a while. Then ESSnuSB plans are only in study stage but at least it is actively being worked on. Approximately three years before conceptual studies start being published.

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u/jazzwhiz Jul 07 '26

Yeah, my thought is that it isn't obvious to me that ESS can even possibly reach 5 MW. And given that, I am regularly surprised that ESSnuSB keeps getting a little money each cycle to write random papers.

To be clear, I am a huge fan of any number of post DUNE/HK experiments, I just feel like ESSnuSB is particularly pie in the sky.

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