First I think you should post the full question here rather than a link to google docs, as not all of us have the time to go pursuing external links.
Anyhow, I did look at your Google doc, and a proton beam is not a laser beam. You can use lasers to create a proton beam by heating matter to very high temperatures, but all you are doing is ionising atoms to create a beam from the protons in their nuclei. If you direct the protons onto a suitable target they will create pions when they collide with the target, and the result is a pion beam. The pions decay to (amongst other things) neutrinos, so you end up with a beam of neutrinos. There is no sense in which the neutrinos are the same as the original laser beam.