Accelerator on a Chip for ADRS?

  • #1
Someone has built a tiny particle accelerator on a chip:

I'd like to know if this type of approach could be used to build an Accelerator Driven Reactor System, for a small scale nuclear reactor running on uranium or thorium fuel.
  • #2
Based on the video, the electron beam travels through the semiconductor material. That would seem to limit the strength of the beam.
It may be possible to circumvent this constraint by designing the accelerator structure with a hollow core.
  • #3
ADR Systems use high energy, high current protons beams.

High-current, high-energy accelerators or cyclotrons are able produce neutrons from heavy elements by spallation. A number of research facilities exist which explore this phenomenon, and there are plans for much larger ones. In this process, a beam of high-energy protons (usually >500 MeV) is directed at a high-atomic number target (e.g. tungsten, tantalum, depleted uranium, thorium, zirconium, lead, lead-bismuth, mercury) and up to one neutron can be produced per 25 MeV of the incident proton beam. (These numbers compare with 200-210 MeV released by the fission of one uranium-235 or plutonium-239 atomb.) A 1000 MeV beam will create 20-30 spallation neutrons per proton.

The experiment on a chip accelerates electrons over 3 mm, while they mention matching the acceleration of SLAC in 100 ft or 33 m, which is 11 million time 3 mm. There is a lot of effort in developing a concept from 3 mm to 33 m. The SLAC article mentions compact systems, not large accelerators.

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