Long-path second-harmonic interferometer with nanosecond time resolution: reliable diagnostic tool for electron density measurement in pulsed plasma devices

Long-path second-harmonic interferometer with nanosecond time resolution: reliable diagnostic tool for electron density measurement in pulsed plasma devices

September 2012 | Optics Letters | Paper

We describe the performance of a second-harmonic interferometer (SHI) to measure, on an optical path exceeding 12 m, the electron plasma density of two plasmoids formed in separate theta-pinch chambers and then merged in a central compression chamber after undergoing acceleration and compression.

Electron density and temperature profile diagnostics for C-2 field reversed configuration plasmas

Electron density and temperature profile diagnostics for C-2 field reversed configuration plasmas

August 2012 | Review of Scientific Instruments | Paper

The 9-point Thomson scattering diagnostic system for the C-2 field reversed configuration plasmas is improved and the measured electron temperature profiles are consistent with theoretical expectations.

A photodiode-based neutral particle bolometer for characterizing charge-exchanged fast-ion behavior

A photodiode-based neutral particle bolometer for characterizing charge-exchanged fast-ion behavior

July 2012 | Review of Scientific Instruments | Paper

A neutral particle bolometer (NPB) has been designed and implemented on Tri Alpha Energy’s C-2 device in order to spatially and temporally resolve the charge-exchange losses of fast-ion populations originating from neutral beam injection into field-reversed configuration plasmas.