Friday, November 16, 2012

ITER gyrotrons push technology to the limit

ITER newsline

Excerpts:

  • if you want to name a device based on the rotating motion of electrons, gyro and tron come in quite handy. By calling such a device a "gyrotron" you will convey a very clear notion of the principles it is based upon.
  • Gyrotrons are powerful devices that have very few applications: industry uses them as heating tools to process glass, composites and ceramics; in magnetic fusion, they contribute - along with ohmic and neutral beam heating - to bringing plasmas to the temperature necessary for fusion.
  • Gyrotrons are, essentially, energy-delivery devices.
  • In ITER...will be composed of more than 20 gyrotrons which will deliver a combined heating power of 24 MW.

Comment:

That answers some of my googled question of how powerful are gyrotrons.  Apparently, these are about 1.2 MW each.  The mass of each is not stated.  One can guesstimate, but it is likely to be wrong.


http://www.iter.org/newsline/162/577


How many of these could be put on a single rocket and blasted into space?  Just one at a time, or could several be packaged together and sent up?

Then, there's this:
"Progress is constant," says Darbos "but we are all working at the limits of technology. We have no experience in steady-state gyrotron operations: the DIII-D Tokamak operated by General Atomics in San Diego has experience with HF pulses of a couple of seconds only, and the Wendelstein 7-X Stellarator, which will implement 10MW of steady-state gyrotron power, is not yet operational."

So, would it be better to just make a really big one and send it up?  Or a few big ones and send them up separately?



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