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Séminaire de Edward Thomas (7 juillet 2014 - 14h00)

par Caroline CHAMPENOIS - publié le

The Magnetized Dusty Plasma Experiment : design, installation, and initial operations

Edward Thomas, Jr.(a), Uwe Konopka(a), Ami DuBois(a), Brian Lynch(a), Stephen Adams(a), Spencer LeBlanc(a), Darrick Artis(a),Robert L. Merlino(b) and Marlene Rosenberg(c)
(a) Physics Department, Auburn University (etjr AT
(b) Department of Physics and Astronomy, The University of Iowa
(c) Department of Electrical and Computer, University of California – San Diego

Over the last two and one-half years, the Magnetized Dusty Plasma Experiment (MDPX) has been under development at Auburn University. The MDPX device is envisioned as a flexible, multi-user, research instrument that can perform a wide range of studies in fundamental and applied plasma physics. The MDPX device consists of a four-coil, superconducting magnet system that can produce magnetic field strengths in excess of 4 Tesla in the bore. In the bore, a 35 cm diameter x 19 cm tall, octagonal vacuum chamber will be used to study strongly magnetized plasmas and dusty plasmas. The primary missions of the MDPX device are to :
(1) investigate the structural, thermal, charging, and collective properties of a plasma as the electrons, ions, and finally charged microparticles become magnetized ;
(2) study the evolution of a dusty plasma containing magnetic particles (paramagnetic, super-paramagnetic, or ferromagnetic particles) in the presence of uniform and non-uniform magnetic fields ;
(3) explore the fundamental properties of strongly magnetized plasmas (“i.e., dust-free” plasmas).
At the end of February, 2014, the MDPX magnet was delivered to Auburn University. By mid-April, 2014, the first magnetic field operations and first plasma operations of the MDPX device began. This presentation will discuss the initial characterization of the magnetic field structure in the MDPX device and will report on initial plasma operations.

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