A Suite of Diagnostics for the FuZE Stabilized Z-pinch Experiment

We report on our ARPA-E diagnostic capability team results from measurements on the Zap Energy FuZE experiment. The experiment has recently been moved from the U of Washington to a new facility in Everett, Washington. Our diagnostics include fast gated visible imaging, fast soft x-ray imaging, multichord visible survey snapshot spectroscopy, an EUV spectrometer, visible spectral line monitors (time resolved), a very sensitive arsenic neutron activation detector (total DD neutron yields), a seven channel foil-filtered soft x-ray diode set, and a four-channel phosphor/PMT soft x-ray system. These diagnostics supplement other measurements on FuZE (particularly magnetics and doppler broadening ion measurements). Our goals are to characterize the pinch column stability, look for hot spots or thermal features, estimate the electron temperature, and study the impurity evolution, for optimized shear-flow pinch conditions. The neutron yield provides an absolute integral measurement to enable better shot-by-shot feedback to the physics operator during plasma parameter scans.