Antimagnets

Discuss the technical details of an "open source" community-driven design of a polywell reactor.

Moderators: tonybarry, MSimon


DeltaV
Posts: 2245
Joined: Mon Oct 12, 2009 5:05 am

Postby DeltaV » Fri Mar 23, 2012 4:42 am


rjaypeters
Posts: 869
Joined: Fri Aug 20, 2010 2:04 pm
Location: Summerville SC, USA

Postby rjaypeters » Mon Mar 26, 2012 2:28 am

Fascinating.

For Polywell applications, would this be a method of avoiding the cusps created by the close approach of the rings?* In effect, make each ring-generated magnetic field ignore the presence of the others? Confinement advantages? Structural advantages?

Maybe not, we want current carrying superconductors to create magnetic fields outside the ring casings. Would the ferromagnetic part of the shield attract the magnetic field generated by the internal superconductors?

*I forget which name is applied to those cusps.
"Aqaba! By Land!" T. E. Lawrence

R. Peters

DeltaV
Posts: 2245
Joined: Mon Oct 12, 2009 5:05 am

Postby DeltaV » Mon Mar 26, 2012 4:05 am

For Polywell, I see it possibly useful for test probes and/or support structures that don't affect the "ideal" B field.

rjaypeters
Posts: 869
Joined: Fri Aug 20, 2010 2:04 pm
Location: Summerville SC, USA

Postby rjaypeters » Mon Mar 26, 2012 11:26 am

Support structures: "Revenge of the Nubs!" or less aggressive: "Return of the Nubs!"

EDIT:

And how could I have missed these?

"Revenge of the Nurbs!" or "Return of the Nurbs!"
"Aqaba! By Land!" T. E. Lawrence

R. Peters

KitemanSA
Posts: 6113
Joined: Sun Sep 28, 2008 3:05 pm
Location: OlyPen WA

Postby KitemanSA » Mon Mar 26, 2012 4:37 pm

I hope not. This would make the nubs even more of a problem than they are now. It is the minor amount of magnetic field that protects them a bit now (kind of like the middle picture). Making the nub invisible magnetically makes it maximally attractive electrostatically, no?

DeltaV
Posts: 2245
Joined: Mon Oct 12, 2009 5:05 am

Re: Antimagnets

Postby DeltaV » Sat Jul 05, 2014 6:13 pm


DeltaV
Posts: 2245
Joined: Mon Oct 12, 2009 5:05 am

Re: Antimagnets

Postby DeltaV » Wed Aug 26, 2015 2:01 am

A Magnetic Wormhole
http://www.nature.com/articles/srep12488

Free PDF.

Image

DeltaV
Posts: 2245
Joined: Mon Oct 12, 2009 5:05 am

Re: Antimagnets

Postby DeltaV » Sun Dec 06, 2015 3:31 am

Three-dimensional magnetic cloak working from d.c. to 250 kHz
http://www.nature.com/ncomms/2015/151124/ncomms9931/abs/ncomms9931.html


Return to “Design”

Who is online

Users browsing this forum: No registered users and 1 guest