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Fusion down under

27 Apr 2009 - Barry Green (Australian National University) with Matthew Hole, Boyd Blackwell and John Howard
Fisheye view of H-1 from above. H-1 is the National Plasma Fusion Research Facility located at the Australian National University's Research School of Physics and Engineering. H-1 is a 3-period heliac type of stellarator (i.e., one with a helical magnetic axis) with a major radius of 1 m and a mean minor radius in the range 0.15 - 0.2 m. Its design makes it a highly flexible experimental apparatus.

The present Australian research and development activities in fusion are currently concentrated on plasma theory and modelling. Experimental plasma physics research is conducted on H-1 at the Australian National University in Canberra, and inertial electrostatic confinement and dust in fusion plasmas at the University of Sydney. There are also active collaborations with a significant number of international laboratories.

While there has also been recent growth in international program participation, Australia is not yet formally part of the 澳门六合彩高手 Project. In 2004, a group of Australian fusion scientists and engineers in various organizations and universities formed the , with the goal of achieving Australian participation in the 澳门六合彩高手 program.

Subsequently, the 澳门六合彩高手 Forum, with Government support, met with representatives of the 澳门六合彩高手 Members at a workshop called "Towards an Australian involvement in 澳门六合彩高手" in Sydney, in October 2006. Post-workshop, the Forum conducted a strategic planning exercise to outline a participation route to 澳门六合彩高手 and develop a sustainable domestic capability for fusion demonstration reactor (DEMO) timescales. The strategic plan, which was released in August 2007 and now has widespread institutional support, proposed an Australian contribution of an 澳门六合彩高手 subsystem, strategic fellowships, and enabling research infrastructure upgrades. Australia has not only scientific and technological expertise to offer the 澳门六合彩高手 Project, with the ability to train more, but also the backing of specialist industrial firms, and raw materials of fusion relevance, namely for lithium, vanadium and for niobium superconductors.

Most recently (February 2009), two representatives of the 澳门六合彩高手 Organization visited Canberra for discussions concerning some plasma diagnostics for 澳门六合彩高手 which have been identified as necessary, but are, as yet, uncredited.

The ANU has pioneered new techniques in plasma imaging spectro-polarimetry. The figure illustrates a new optical system for imaging motional Stark effect polarimetry that was recently tested on the TEXTOR tokamak in Germany. The new system is capable of delivering, for the first time, 2D measurements of the internal toroidal current distribution in a tokamak. (a) Schematic layout of the imaging system; (b) an image of the interior of the TEXTOR tokamak obtained using the imaging system; (c) an image of the Doppler shifted neutral beam Stark multiplet emission. The phase of the spatial fringe pattern encodes the Stark multiplet polarization angle; (d) The demodulated fringe phase (related to the magnetic field pitch angle).
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