Magnetic diagnostic suite of the C-2W field-reversed configuration experiment

July 2018 | T. Roche | Review of Scientific Instruments | Paper

A fundamental component of any magnetically confined fusion experiment is a firm understanding of the magnetic field. The increased complexity of the C-2W machine warrants an equally enhanced diagnostic capability.

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Magnetic Diagnostic Suite of the C-2W Field-Reversed Configuration Experiment

April 2018 | T. Roche | HTPD2018 | Poster

The C-2W machine is the world’s premier Advanced Beam-Driven FRC
n Monitoring the complete magnetic evolution of the plasma is essential for
understanding the system’s dynamics
n Over 500 B-field signals are monitored to provide both post-shot analysis data and data for an advanced active feedback system.

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C-2W Magnetic Measurement Suite

October 2017 | T. Roche | APS-DPP | Poster

Monitoring the complete magnetic evolution of the plasma is essential for understanding the system’s dynamics. Over 1000 B-field signals are monitored to provide both post-shot analysis data and data for an advanced active feedback system under development

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Enhanced magnetic field probe array for improved excluded flux calculations on the C-2U advanced beam-driven field-reversed configuration plasma experiment

August 2016 | T. Roche | Review of Scientific Instruments | Paper

External flux conserving coils were installed onto the exterior of the C-2U confinement vessel to increase the flux confinement time of the system. The 0.5 in. stainless steel vessel wall has a skin time of ⇠5 ms. The addition of the external copper coils e↵ectively increases this time to ⇠7 ms.

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Test ion transport in a collisional, field-reversed configuration

Test ion transport in a collisional, field-reversed configuration

July 2014 | T. Roche | Plasma Sources Science and Technology | Paper

Diffusion of test-ions in a flux-coil generated, collisional, field-reversed configuration is measured via time-resolved tomographic reconstruction of Ar+ optical emission in the predominantly nitrogen plasma.

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