Levitated Dipole Experiment
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The latest on the LDX project can be found on this page.

August 2012. MIT and Columbia to begin project to test models of space weather using two state-of-the-art laboratory experiments, LDX at MIT and and CTX at Columbia.

"Turbulent inward pinch of a plasma confined in a dipole magnet", Nature Physics, 1/24/2010, doi: 10.1038/NPHY51510

December 31, 2008: The first levitated experiments took place in the fall of 2007 and four experimental campaigns were carried out in 2008. In May a 10 kW klystron was put into service increasing the heating power capability from 5 to 15 kW. Experimental studies documented for the first time the formation of "natural" density profiles with equal number of particles per unit flux. This work resulted from the development of a four chord interferometer and formed the basis of a Ph.D. study (A.C. Boxer, 2008). Results were presented at the innovative confinement concept (ICC) meeting (Reno 6/08) the IAEA fusion conference (Geneva, 10/08) and in an invited presentation at the DPP meeting (Dallas, 11/08). Several journal articles are in preparation. Additionally, in December, we obtained a 1 MW transmitter (2-28 MHz) which we plan to utilize for direct ion heating.

February 9, 2007: First levitation tests were sucessfully completed. The launcher was withdrawn about 2 cm and the floating coil was levitated for approximately 40 minutes. The floating coil has 5 degrees of freedom for position and tilt. The real time digital control system utilizes an occulting position detection made up of 8 laser lines. The the coil position was maintained within 0.5 mm of the desired location. View of the coil floating and a movie of the end of the float period are available.

September 2003: The continuation proposal of LDX for FY 2004-2007 approved.

September 2006: The continuation proposal of LDX for FY 2007-2009 approved.

November 8, 2007: we completed our fourth experimental campaign with a levitated dipole and, for the first time, with all supports fully removed from the plasma. We gathered data covering a range of parameters, heating, and fueling conditions. First results will be presented at the Orlando APS meeting on 11/14/07.

  • LDX in the Media

As LDX is an exciting new experiment in the field of fusion research, it has attracted some attention from the media. Here are links to the internet versions of journalistic reports on LDX.

Previous Progress and Activity Reports:

Webmaster: D. Garnier Last updated: Mon, Sep 11, 2006