Forced two-phase helium cooling scheme for the Mu2e transport solenoid G Tatkowski1,2, S Cheban1, N Dhanaraj1, D Evbota1, M Lopes1, T Nicol1, R Sanders1, R Schmitt1 and E Voirin1 1 Fermi National Accelerator Laboratory, PO Box 500, Batavia IL USA 60510-5011