[ExI] Accelerator on a Chip: How It Works

Anders Sandberg anders at aleph.se
Sun Sep 29 09:26:57 UTC 2013

On 2013-09-28 16:19, John Clark wrote:
> https://www.youtube.com/watch?v=V89qvy8whxY

Original paper at http://arxiv.org/abs/1308.0464

Neat. So if one can accelerate electrons to 50 GeV in 100 feet, that 
means a one meter chip would presumably get you 500 MeV(linear increase 
in energy by length). The paper merely claims 25 MeV/m, but 25 MeV is 
still a pretty penetrating beam. I don't think this design lends itself 
to firing a lot of electrons as a particle beam weapon (efficiency of 
energy transfer from the laser into the electrons will still  be low; 
you could just fire the laser at the target), but as they say, this is a 
good electron source for free-electron X-ray lasers.

Dr Anders Sandberg
Future of Humanity Institute
Oxford Martin School
Oxford University

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