# How to discern between the accelerator and atmospheric neutrinos in detectors?

If an experiment is detecting accelerator neutrinos, then how can one distinguish the accelerator $$\nu_{\mu}$$-neutrinos from the atmospheric $$\nu_{\mu}$$-neutrinos? As I know, both of these types of neutrinos will be having almost the same energy ranges. Then how is it to possible to discriminate these two types of neutrinos in a given experimental setup?

• That will depend on the experiment. Are you specifically thinking about the DUNE experiment? Oct 30 '18 at 8:06
• @JohnRennie You can consider the example of NOvA. How is it known that the neutrinos detected in this experiment are accelerator neutrinos generated by NUMI beam only and they are not the atmospheric neutrinos? Oct 30 '18 at 9:35
• This is a matter that the experimenters generally address during design. The details vary hugely, but there are a handful of pretty standard techniques. Experimental proposals and initial design documents are almost always publicly available by the time they're building it (look on arXiv), so you can get the details straight from the horses mouth. Oct 30 '18 at 14:24