it is a toroidal coil
with a rectangular cross section).
We now consider the dimensions of the toroidal coil
. The tolerable uncertainty on [B.sub.rf] X [l.sub.rf] is somewhat relaxed for the r.f.
* When imprinting a frequency into water, the frequency imprinted is that of an alternating current in a toroidal coil
. Succussion or a magnetic B-field will do the imprinting.
structures fabricated using microreplication technology offer several advantages:
As part of this study, a bucked and wedged OFHC toroidal coil
will be evaluated.
* the reactor magnetic system containing 18 superconducting toroidal coils
(conductors--[Nb.sub.3]Sn; current--68 kA; magnetic flux density--11.8 T; accumulated field energy--41 GJ; weight--6540 tons; cost--EUR 323 million), 6 superconducting poloidal field coils (conductors--NbTi; current--52 kA; magnetic flux density--6 T; accumulated field energy--4 GJ; weight 2163 tons; cost--EUR 122 million) and central solenoid (conductors--Nb3Sn; current--46 kA; magnetic flux density--13 T; accumulated field energy--6.4 GJ; mass 974 tons; cost--EUR 135 million);
One of those companies sold an electronics component called toroidal coils
, made by winding copper wire by hand around a doughnut-shaped ceramic core.