Health Physics Question

Hi Everyone,

I am a senior undergrad student.  I am looking for ideas for a senior
project regarding health physics.

I have access to a nuclear reactor, particle accelerator, neutron
activation, xrf... etc..  if anyone has any great ideas I would love to hear
them as I don't have many ideas myself.  I am interested in something
possibly dealing with doses, radiation safety, etc......  it can be
anything, anything you've ever wondered, etc..etc..  any help is
appreciated.

ps