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rdh_2011_icc_16.pdf2011-08-23 11:55:25Robert Horton

Formation and analysis of accelerated non-hydrogenic compact toroid plasmas on CTIX

Author: Robert D. Horton
Requested Type: Poster Only
Submitted: 2011-06-10 14:16:06

Co-authors: D. Buchenauer, D.Q. Hwang, R. Klauser, B.E.Mills

Contact Info:
University of California, Davis
Building 661, Greenville Rd an
Livermore, CA   94550
USA

Abstract Text:
In the past, the Compact Toroid Injection Experiment (CTIX) has typically produced accelerated magnetized plasmas of low atomic number suitable for mass injection into nearly-hydrogenic target plasmas. However, for other applications such as disruption mitigation, plasmas of higher atomic number (Z>1) will be desirable. CTIX can be used to produce Z>1 plasmas either by direct formation or by snowplow accretion. We will compare the CT formation and acceleration process as well as the mass, momentum, and energy density obtained on CTIX in hydrogenic and non-hydrogenic plasmas, using magnetic and interferometric diagnostics for position and density, and spectroscopic diagnostics for species identification. Both conventional and active switching will be used for plasma production, with active switching of particular importance for high-Z neutral species. The acceleration of high Z plasmas and impurities in hydrogenic plasmas will be studied using Rutherford Backscattering Spectrometry (RBS) and Auger Electron Spectroscopy on Si collector probes at the exit to the accelerator.

Characterization: A3,A4

Comments:

University of Washington

Workshop on Innovation in Fusion Science (ICC2011) and
US-Japan Workshop on Compact Torus Plasma
August 16-19, 2011
Seattle, Washington

ICC 2011