1) A solenoid surrounds the TPC and creates a uniform magnetic field in the z direction. The field points from right to left and has a magnitude of 0.5 T. It terminates outside the outer field cage and endcaps.
2) A proton starting at x = y = 0 moves towards the outer sector within the TPC. The effect of the electric field (from the membrane) on the proton can be neglected. Assume we are facing the left endcap. Will the proton orbit clockwise or counter clockwise?
3) The magnitude of the momentum of the proton is 4x10^-19 kg m/s in the xy plane (again, the effect of the electric field on the proton can be neglected).