Search found 993 matches

by rcain
Sat Sep 06, 2008 2:47 am
Forum: Theory
Topic: Possible wiffle-ball analytical solution
Replies: 88
Views: 39093

Indrek - Dr Nebel has gone very quiet - it seems it is all up to you now :)

is your model complete and accurate yet? ;)
by rcain
Sat Sep 06, 2008 2:36 am
Forum: Theory
Topic: magrid configuration brainstorming
Replies: 632
Views: 148186

what happens if yu make the whole magrid structure oblate - like a like a rubgy(-foot) ball?

ragarding it simply as a cavity surface - then use MHD flow? use the cusps to extend the well?
by rcain
Sat Sep 06, 2008 2:20 am
Forum: Theory
Topic: The question of scaling
Replies: 42
Views: 13276

I wouldn't recommend doing a lot of modelling of the arcing right now. We've been looking at it, and it's complicated. It's not just a Paschen breakdown to the chamber wall. However, rather than sticking my foot in my mouth (by saying something that's not correct) let me say that we don't understan...
by rcain
Sat Sep 06, 2008 2:17 am
Forum: News
Topic: Dense Z-Pinch Conference '08
Replies: 3
Views: 2613

actually, I would be quite interested in a complete round-up of what fusion is up to - amongst others i'm wondering what is happening with our Australian friends - Dr. Joe Khachan - http://www.talk-polywell.org/bb/viewtopic.php?t=509 . i'm also wondering if our dear friend http://www.talk-polywell.o...
by rcain
Sat Sep 06, 2008 1:54 am
Forum: News
Topic: Any official news as of late July 2008?
Replies: 154
Views: 51587

we may become nothing but an archive!

shall we start a new forum?
by rcain
Sat Sep 06, 2008 1:48 am
Forum: News
Topic: TOKAMAK Instabilities
Replies: 25
Views: 10705

Art Carlson suggested a while ago that his money would be on Reversed Field Configurations - maybe self organized plasma is the best direction?
by rcain
Mon Jul 07, 2008 9:44 pm
Forum: Theory
Topic: Where's the beef?
Replies: 132
Views: 39210

TallDave wrote:
Now why on earth hasn't this been built yet?
They got $45M from Paul Allen's VC company and may be building it as we speak.
Thanks for the info TallDave - I shall certainly be keeping a weather-eye from now on - any idea of their project plan/timescales?
by rcain
Mon Jul 07, 2008 8:54 pm
Forum: Theory
Topic: Where's the beef?
Replies: 132
Views: 39210

I've been out of the field for a looong time, so I can't say much about the current state or the best reviews. Google seems to turn up a lot, like this white paper . Thanks for that Dr Carlson, I shall certainly give it a good read through. A very nice looking approach here - circa 2000 - 'Thick Li...
by rcain
Mon Jul 07, 2008 5:51 pm
Forum: Theory
Topic: Where's the beef?
Replies: 132
Views: 39210

Your quote regarding - 'line cusps' is this referring to containment in the absence of the Wiffle Ball inflation effect (difficult to guess out of context, I'm afraid I don't yet have access to the paper)? . Unless I misunderstood something, this is after going to high beta (= whiffle ball made). S...
by rcain
Mon Jul 07, 2008 2:44 pm
Forum: Theory
Topic: Where's the beef?
Replies: 132
Views: 39210

Hi Dr Carlson I just loved your 'eviscerative' salvo - and sardonic to boot!) - I'm sure Dr Bussard would be truly gutted - were he with us. I'd really love to take you on concerning your 'electrons taking two paths at once' concept - alas, I think my both my maths and physics will fall woefully sho...
by rcain
Mon Jul 07, 2008 10:16 am
Forum: Theory
Topic: from confinement to ignition to (continuous?) burn
Replies: 11
Views: 4995

i cant help thinking that scattering will be an 'uncontrolled' problem, also as you suggest alpha sputtering. I am of a different opinion . I believe the real annealing mechanism is beam bunching (klystron like). If that is predominant [POPS results and several simulations including the MIT papers ...
by rcain
Sun Jul 06, 2008 1:10 am
Forum: Theory
Topic: All that can go wrong with recirculation
Replies: 112
Views: 33826

This should do for a start. I believe the true believers talk about getting recirculation factors of 1000 or 10,000 (because that is what they need to compensate for the poor cusp confinement, which I argue is even poorer than they think). I can't imagine getting more than a factor of 10 Unless we ...
by rcain
Sun Jul 06, 2008 12:06 am
Forum: General
Topic: Two more months on the contract
Replies: 31
Views: 10140

my guess is along the following lines of reasoning:: 1) the WB7 programme was missioned principally with confirming the 'snap-shot' results of the WB6, before it blew up and coincidentally that contract concluded. 2) the WB7 is purportedly 'spinning like a top and producing data 'all day long' - whi...
by rcain
Sat Jul 05, 2008 10:41 pm
Forum: Theory
Topic: from confinement to ignition to (continuous?) burn
Replies: 11
Views: 4995

Is Rider's paper discredited? Probably not. Disputed, certainly. We probably need experimental data at MW energies to really know for sure. I think that was really one of the points of my thread here - are we really likely ever to achieve data at those levels - at least in any 'continuous' burn reg...
by rcain
Sat Jul 05, 2008 10:00 pm
Forum: Theory
Topic: from confinement to ignition to (continuous?) burn
Replies: 11
Views: 4995

Hi To TallDave:: a different definition of 'ignition' - thats a useful idea to work with - thanks. i still do wonder though, how we maintain the well (and the core) whilst at the same time producing and extracting a 'useful' amount of energy out of it. If some degrees of asymmetry were to be incorpo...