15-19 April 2018
Paradise Point Resort & Spa
America/Los_Angeles timezone

10.40 Development of a three-wave far-infrared laser interferometry and polarimetry diagnostics for the C-2W FRC experiment

18 Apr 2018, 10:30
2h 31m
Paradise Point Resort & Spa

Paradise Point Resort & Spa

1404 Vacation Rd, San Diego, CA 92109

Speakers

Bihe Deng (TAE Technologies, Inc.) Mark Rouillard (TAE Technologies, Inc.) Ping Feng (TAE Technologies, Inc.) Michael Beall (TAE Technologies, Inc.) Sam Armstrong (TAE Technologies, Inc.) Josie Castellanos (TAE Technologies, Inc.) John Kinley (TAE Technologies, Inc.) Angelica Ottaviano (TAE Technologies, Inc.) Greg Settles (TAE Technologies, Inc.) Greg Snitchler (TAE Technologies, Inc.) Jason Wells (TAE Technologies, Inc.) Shawn Ziaei (TAE Technologies) the TAE Team (TAE Technologies, Inc.)

Description

C-2W field-reversed configuration (FRC) experiments [1] are focused to resolve major physics issues facing the future of FRC devices. To achieve these goals, it is essential to measure the plasma equilibrium dynamics and monitor plasma fluctuations. One of the critical diagnostics under development is a 14-chord three-wave far infrared (FIR) laser interferometry and polarimetry system, which can provide simultaneous high temporal resolution measurements of density and Faraday rotation profiles with high accuracy. The unique challenges facing FIR diagnostics in high beta FRC plasmas are the extremely small (< 0.5 degrees) Faraday rotation angles, severe laser beam refraction effects due to high density gradients and choice of long wavelength [2], and extremely high electromagnetic noise produced by the plasma forming pulsed power circuits. The electro-opto-mechanical design and development of the system will be described with methods to overcome the challenges. Initial experimental data will be presented. [1] M.W. Binderbauer et al., AIP Conf. Proc. 1721, 030003 (2016). [2] B.H. Deng et al., Rev. Sci. Instrum. 87, 11E125 (2016).

Primary author

Bihe Deng (TAE Technologies, Inc.)

Co-authors

Mark Rouillard (TAE Technologies, Inc.) Ping Feng (TAE Technologies, Inc.) Michael Beall (TAE Technologies, Inc.) Sam Armstrong (TAE Technologies, Inc.) Josie Castellanos (TAE Technologies, Inc.) John Kinley (TAE Technologies, Inc.) Angelica Ottaviano (TAE Technologies, Inc.) Greg Settles (TAE Technologies, Inc.) Greg Snitchler (TAE Technologies, Inc.) Jason Wells (TAE Technologies, Inc.) Shawn Ziaei (TAE Technologies) the TAE Team (TAE Technologies, Inc.)

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