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geoneutrinos / reactors

Port/cleanup of the reactor page as an independent repo
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Time Critical: Scattered lepton KE distributions dR/dT #294

Open stdye opened 3 years ago

stdye commented 3 years ago

IMB_IB_31082021.pdf

ES is a potential demonstration at Morton- see slides

We started adding ES almost 2 years ago. It is still not done.

dR/dT vs T distributions are needed to determine detectable signal. Detector efficiency function cannot operate on dR/dE vs E for ES; It can operate on dR/dT vs T for ES and for IBD

See issues #291 and #268

stdye commented 2 years ago

This is due this week. Please report progress.

DocOtak commented 2 years ago

Massive computation issues aside, the largest problem we have in getting this implemented is that in ES total mode, all information about which neutrino flavor is lost by the time we want to to detector efficiency calculations. I tried some simple things over the weekend that didn't work out very well.

I have a more complicated idea that would make essentially all interaction type spectra available all the time (on demand, with caching) but it's complicated on the level of #290 so I'd want that merged in some usable state before making this attempt.

Do you know of any reasonable approximations we could use to get something done quickly? Specifically for when we do not know the neutrino flavor (maybe average survival probability?).

stdye commented 2 years ago

We should try implementing the KE spectrum for 8B solar neutrinos and use the simplifying assumption that the flux is all electron neutrinos.

DocOtak commented 2 years ago

We have the "building blocks" for doing this now and it has been done for solar electron neutrinos (8B). However the computational complexity is the problem now. Solar neutrinos were pretty easy, but doing the same with reactors at the current resolution (1000x1000 bins for each core, 500ish cores) is 4~5 orders of magnitude more number crunching compared to solar. We might need some cleverness to deal with this.