To evaluate performance of a second generation Tandem Mirror Machine, an extensive instrumentation system is being designed and installed as part of the major device fabrication. The systems listed will be operational during the start-up phase of the TMX Upgrade machine and provide bench marks for future performance data. In addition to plasma diagnostic instrumentation, machine parameter monitoring systems will be installed prior to machine operation. Simultaneous recording of machine parameters will permit evaluation of plasma parameters sensitive to machine conditions.

After the two C-coils were joined to form a yin-yang magnet, it was moved to the Mirror Fusion Test Facility (MFTF) at the Lawrence Livermore National Laboratory. Additional preparatory work was done before the magnet assembly could be moved into the vacuum vessel for final hookup. Apparatus was designed and built to determine magnet mechanical and magnetic centerlines and establish a magnetic-field profile between the mirror points and yin-yang center. Hall probes were installed to measure magnetic fields during startup and operation. A system using linear potentiometers was used to detect magnet movement during operation.