Jet outflow and open field line measurements on the C-2U advanced beam-driven field-reversed configuration plasma experiment

Jet outflow and open field line measurements on the C-2U advanced beam-driven field-reversed configuration plasma experiment

August 2016 | D. Sheftman | Review of Scientific Instruments | Paper

Knowledge and control of the axial outflow of plasma particles and energy along open-magnetic-field lines are of crucial importance to the stability and longevity of the advanced beam-driven field- reversed configuration plasma. An overview of the diagnostic methods used to perform measurements on the open field line plasma on C-2U is presented, including passive Doppler impurity spectroscopy, microwave interferometry, and triple Langmuir probe measurements.

Hanle effect as a magnetic diagnostics for field-reversed configuration plasmas

Hanle effect as a magnetic diagnostics for field-reversed configuration plasmas

August 2016 | D. K. Gupta | Review of Scientific Instruments | Paper

Hanle effect is presented as a low magnetic-field diagnostic for field-reversed configuration (FRC) plasmas. The non-perturbative technique is capable of measuring not only magnetic-field pro- file and direction but also field-null position and its shape.

End loss analyzer system for measurements of plasma flux at the C-2U divertor electrode

End loss analyzer system for measurements of plasma flux at the C-2U divertor electrode

August 2016 | M. E. Griswold | Review of Scientific Instruments | Paper

An end loss analyzer system consisting of electrostatic, gridded retarding-potential analyzers and pyroelectric crystal bolometers was developed to characterize the plasma loss along open field lines to the divertors of C-2U. The system measures the current and energy distribution of escaping ions as well as the total power flux to enable calculation of the energy lost per escaping electron/ion pair.

First fast-ion D-alpha (FIDA) measurements and simulations on C-2U

First fast-ion D-alpha (FIDA) measurements and simulations on C-2U

August 2016 | N. G. Bolte | Review of Scientific Instruments | Paper

The first measurements of fast-ion D-alpha (FIDA) radiation have been acquired on C-2U, Tri Alpha Energy’s advanced, beam-driven field-reversed configuration (FRC). These measurements are also forward modeled by FIDASIM. This is the first measurement and simulation of FIDA carried out on an FRC topology.