Forbidden Proton

Welcome Recruit Delta-7 and congratulations on your promotion to the junior manager position of "Grand Lord and High Controller of All Things Unseen Hither and Yon". Your first assignment is operator of the quantum unification measurement device to observe exotic particles passing through a series of test systems. To isolate detectors from cosmic rays and other background radiation the system is built deep into the planet's core and tests pass through chambers that journey ever downwards.