Figure 4
From: Solid cryogen: a cooling system for future MgB2 MRI magnet
Temperature versus time curves of the cooling system: (a) from 77 K and (b) after 130 h of the cool-down. Temperature sensor locations: TS1 (on the Cu bar below the 2nd stage of the cryocooler), TS2 (on the Cu plate of the SN2 chamber near the current lead tube), TS3 (on the negative current lead termination of the coil), TS4 (on top of the coil), TS5 (on the bottom of the coil), TS6 (on the G10 support plate), TS7 (on the radiation shield bottom, diagonal to the cryocooler 1st stage connection).
