from what they say, they use mu-metal and coils to screen magnetic fields. Of course metal is used to block pressure and hydrogen leaks... they claim 30-500keV gammas around background level.
you can notice it indirectly with the photography of a gamma measurement (falsely attributed to vysotskii) that they have to sheld the detector from the background and not the operator from the reactor. 2013/10/5 Eric Walker <[email protected]> > On Thu, Oct 3, 2013 at 12:43 AM, Sunil Shah <[email protected]> wrote: > > Mats has posted some pictures, a short interview with John Hadjichristos, >> and updated with some comments regarding the setup. >> >> http://matslew.wordpress.com/2013/10/03/update-on-defkalions-reactor-demo-in-milan/ >> /Sunil >> > > Elsewhere I have noted in connection with Defkalion's device that it > appeared to have thick shielding, and I went on to speculate that the > shielding was there to protect against x-rays. The link above includes a > closeup of the box, cut open, which gives a better view of what is > surrounding the core: > > http://matslew.files.wordpress.com/2013/10/dsc_0025_600px_matslewan.jpg > > In the picture there is a thin metal case and a thick layer of something > that looks like asbestos. I'm going to guess that this setup would not be > good at stopping high-intensity x-rays, although it would probably stop > some. This is another indication that my speculation that there were high > levels of radiation that need to be shielded was incorrect. If so, this > would better match what we saw with Rossi's last demo. > > Eric > >
