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Delays prompt reshuffle at ITER fusion project: Scientific American

In an effort to put the world's largest scientific experiment back on track after delays and cost overruns, Europe is shaking up the agency overseeing its portion of the multinational ITER reactor.

On February 16, Frank Briscoe, a British fusion scientist, will take the reins as interim director of Fusion for Energy (F4E), the agency in Barcelona, Spain, that manages Europe's ITER contribution--the largest of any partner's. Briscoe replaces Didier Gambier, a French physicist who joined the F4E as director when it formed in 2007. Gambier was originally appointed for a five-year term.

The European Union (EU) is also formulating a plan to complete construction on the multibillion-dollar machine in 2019, a year after currently scheduled, Nature has learned.

ITER aims to prove the viability of fusion power by using superconducting magnets to squeeze a plasma of heavy hydrogen isotopes to temperatures above 150 million/degrees Celsius. When full-scale experiments begin in 2026, the machine should produce ten times the power it consumes.



The fact is that what we're experiencing right now is a top-down disaster. -Paul Krugman
by dvx (dvx.clt ät gmail dotcom) on Sun Feb 7th, 2010 at 01:45:16 PM EST
[ Parent ]
When full-scale experiments begin in 2026, the machine should produce ten times the power it consumes.

When they can extract 20% of that power as usable power they might have something, but they will likely have to extract significantly more to operate at scale, as 80% of 100 Megawatts would be a lot of "waste" energy, presuming that most of it would be thermal energy. The efficiency would seem to be a major limit on cycle time. Not very practical if one or two cycles melts or disables part of the machine. I don't have any idea how this will be done. Some sort of macro quantum efficiency?

As the Dutch said while fighting the Spanish: "It is not necessary to have hope in order to persevere."
by ARGeezer (ARGeezer a in a circle eurotrib daught com) on Sun Feb 7th, 2010 at 07:53:39 PM EST
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I remain convinced that stray particles from the reactions will shred the containment vessels requiring regular replacement. and those things will be just as hot as any other nuclear waste.

If practical fusion is a technological Friedman unit away (50 years), they're basically admitting they don't have a clue how they're gonna do it. Might as well work on the Star Drive.

keep to the Fen Causeway

by Helen (lareinagal at yahoo dot co dot uk) on Sun Feb 7th, 2010 at 08:12:01 PM EST
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ny gut sez this is a giant boondoggle/white elephant, and it burns me up thinking how it'd be if all those squillions had been invested in sun and wind instead.

i suspect that's as close to a free lunch we'll ever get!

~"When an inner situation is not made conscious, it appears outside as fate." Karl Jung~

by melo (melometa4(at)gmail.com) on Mon Feb 8th, 2010 at 07:39:13 AM EST
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