b'Figure 4. Instrumentation checkout ofMeasurement Science Laboratoryand loaded into the capsule. Using the THOR-MOXTOP-1 experiment at INL, where the instrumentationthe internal cable heater, the heat package was tested and calibrated. sink temperature was raised until Following the module andthe sodium melted. The capsule was instrumentation assemblies thethen allowed to cool, the sodium experiment hardware was shippedlevel in the heat sink was verified, to the Materials & Fuels Complexand the capsules were sealed. Figure for sodium loading in the pyro- 2 shows a series of photographs of chemistry glovebox. In the inertthe sodium loading of the THOR-atmosphere of the glovebox, solidMOXTOP-1 capsule.sodium was rolled into cylinders 180 2023|AFC ACCOMPLISHMENTS'