Featured Research

from universities, journals, and other organizations

MIT, Columbia Begin New Energy Experiment: Half-ton Levitating Ring Is Key To Work

Date:
December 10, 2004
Source:
Massachusetts Institute Of Technology
Summary:
MIT and Columbia University students and researchers have begun operation of a novel experiment that confines high-temperature ionized gas, called plasma, using the strong magnetic fields from a half-ton superconducting ring inside a huge vessel reminiscent of a spaceship.

MIT and Columbia University researchers have begun an experiment at the Plasma Fusion and Science Center that could lead to a new source of energy. Key to the work is this huge vessel reminiscent of a spaceship. Photo / Donna Coveney

CAMBRIDGE, Mass. -- MIT and Columbia University students and researchers have begun operation of a novel experiment that confines high-temperature ionized gas, called plasma, using the strong magnetic fields from a half-ton superconducting ring inside a huge vessel reminiscent of a spaceship. The experiment, the first of its kind, will test whether nature's way of confining high-temperature gas might lead to a new source of energy for the world.

First results from the Levitated Dipole Experiment (LDX) were presented at a meeting of the American Physical Society the week of Nov. 15. Scientists and students described more than 100 plasma discharges created within the new device, each lasting from 5 to 10 seconds. X-ray spectroscopy and visible photography recorded spectacular images of the hot, confined plasma and of the dynamics of matter confined by strong magnetic force fields.

A dedication for LDX, the United States' newest approach to nuclear fusion, was held in late October. Fusion energy is advantageous because its hydrogen fuel is practically limitless and the resulting energy would be clean and would not contribute to global warming as does the burning of fossil fuels.

Scientists using the LDX experiment will conduct basic studies of confined high-temperature matter and investigate whether the plasma may someday be used to produce fusion energy on Earth. Fusion energy is the energy source of the sun and stars. At high temperature and pressure, light elements like hydrogen are fused together to make heavier elements, such as helium, in a process that releases large amounts of energy.

Powerful magnets, such as the ring in LDX, provide the magnetic fields needed to initiate, sustain and control the plasma in which fusion occurs. Because the shape of the magnetic force fields determines the properties of the confined plasma, several different fusion research experiments are under way throughout the world, including a second experiment at MIT, the Alcator C-Mod, and the HBT-EP experiment at Columbia University.

LDX tackles fusion with a unique approach, taking its cue from nature. The primary confining fields are created by a powerful superconducting ring about the size of a truck tire and weighing more than a half-ton that will ultimately be levitated within a large vacuum chamber. A second superconducting magnet located above the vacuum chamber provides the force necessary to support the weight of the floating coil. The resulting force field resembles the fields of the magnetized planets, such as Earth and Jupiter. Satellites have observed how these fields can confine plasma at hundreds of millions of degrees.

###

The LDX research team is led by Jay Kesner, senior scientist at MIT's Plasma Science and Fusion Center (PSFC) (who earned his Ph.D. from Columbia University in 1970), and Michael Mauel, a professor of applied physics at Columbia University (who earned his degrees from MIT, S.B. 1978, S.M. 1979, Sc.D. 1983).

Kesner and Mauel's colleagues on the experiment include five graduate students (Alex Boxer, Jennifer Ellsworth, Ishtak Karim and Scott Mahar of MIT and Eugenio Oritz of Columbia) and two undergraduates (Austin Roach and Michelle Zimmermann of MIT). The team also includes Columbia scientists Darren Garnier and Alex Hansen, as well as Rick Lations, Phil Michael, Joseph Minervini, Don Strahan and Alex Zhukovsky of the PSFC.

The work is sponsored by the Department of Energy's Office of Fusion Energy Sciences.


Story Source:

The above story is based on materials provided by Massachusetts Institute Of Technology. Note: Materials may be edited for content and length.


Cite This Page:

Massachusetts Institute Of Technology. "MIT, Columbia Begin New Energy Experiment: Half-ton Levitating Ring Is Key To Work." ScienceDaily. ScienceDaily, 10 December 2004. <www.sciencedaily.com/releases/2004/12/041206192640.htm>.
Massachusetts Institute Of Technology. (2004, December 10). MIT, Columbia Begin New Energy Experiment: Half-ton Levitating Ring Is Key To Work. ScienceDaily. Retrieved July 22, 2014 from www.sciencedaily.com/releases/2004/12/041206192640.htm
Massachusetts Institute Of Technology. "MIT, Columbia Begin New Energy Experiment: Half-ton Levitating Ring Is Key To Work." ScienceDaily. www.sciencedaily.com/releases/2004/12/041206192640.htm (accessed July 22, 2014).

Share This




More Matter & Energy News

Tuesday, July 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Government Approves East Coast Oil Exploration

Government Approves East Coast Oil Exploration

AP (July 18, 2014) The Obama administration approved the use of sonic cannons to discover deposits under the ocean floor by shooting sound waves 100 times louder than a jet engine through waters shared by endangered whales and turtles. (July 18) Video provided by AP
Powered by NewsLook.com
Sunken German U-Boat Clearly Visible For First Time

Sunken German U-Boat Clearly Visible For First Time

Newsy (July 18, 2014) The wreckage of the German submarine U-166 has become clearly visible for the first time since it was discovered in 2001. Video provided by Newsy
Powered by NewsLook.com
Obama: U.S. Must Have "smartest Airports, Best Power Grid"

Obama: U.S. Must Have "smartest Airports, Best Power Grid"

Reuters - US Online Video (July 17, 2014) President Barak Obama stopped by at a lunch counter in Delaware before making remarks about boosting the nation's infrastructure. Mana Rabiee reports. Video provided by Reuters
Powered by NewsLook.com
Crude Oil Prices Bounce Back After Falling Below $100 a Barrel

Crude Oil Prices Bounce Back After Falling Below $100 a Barrel

TheStreet (July 16, 2014) Oil Futures are bouncing back after tumbling below $100 a barrel for the first time since May yesterday. Jeff Grossman is the president of BRG Brokerage and trades at the NYMEX. Grossman tells TheStreet the Middle East is always a concern for oil traders. Oil prices were pushed down in recent weeks on Libya increasing its production. Supply disruptions in Iraq fading also contributed to prices falling. News from China's economic front showing a growth for the second quarter also calmed fears on its slowdown. Jeff Grossman talks to TheStreet's Susannah Lee on this and more on the Energy Department's Energy Information Administration (EIA) report. Video provided by TheStreet
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins