Polywell tidbits from nasa.gov... EMC2 CEO?

Point out news stories, on the net or in mainstream media, related to polywell fusion.

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

Polywell tidbits from nasa.gov... EMC2 CEO?

Post by DeltaV »

THE KON TIKI
A 2012 National Space Settlement Contest Proposal


This seems vaguely familiar, but T-P search finds nothing...

page 9:
A special thanks goes out to Jeffery E. McAninch, CEO of EMC2 fusion who personally answered some of our questions regarding the ISV’s onboard power source.
Jeffery E. McAninch is LLNL coauthor of
Measurement of Beryllium in Biological Samples by Accelerator Mass Spectrometry: Applications for Studying Chronic Beryllium Disease
April 21, 2004


page 57:
Photo Credit: EMC2 Fusion Development Corporation
Same dodecahedral Polywell concept posted here on T-P by torulf2 on May 1, 2010.
Image


http://search.nasa.gov/search/search.js ... e=polywell

TallDave
Posts: 3140
Joined: Wed Jul 25, 2007 7:12 pm
Contact:

Re: Polywell tidbits from nasa.gov... EMC2 CEO?

Post by TallDave »

Hmmm

http://www.unidata.ucar.edu/support/hel ... 10430.html

Hi Jeff,

> I've built a 3D PIC code for the plasma physics, that I also use to do
> engineering analysis to support our experimental work.
>
> I settled on NetCDF up front, mostly because I use VisIt for graphics, and
> knew that they worked well together.
>
> If I get the NetCDF build on Cygwin working, I will be sure to provide the
> details if you want to post it to help other people out.
>

That's all the cyb
> I would like to get a NetCDF 4 reader for VisIt (right now it only reads
> classic), and get VisIt to include the fortran API in their standard build,
> so that I could link my code to VisIt's netcdf+hdf5, rather than always
> maintaining my own. But there's no way I have time to do either of those
> myself. I am hoping to find some funds to contract someone else to do that.
> I'm open to suggestions if you know anyone who is familiar with both NetCDF
> builds and VisIt plugins.

I do know of a software company that is familiar with netCDF and VisIT, and has
written VisIT plugins. In the next response, I'll forward your request to
someone at that company who may be able to help or suggest other avenues.

--Russ

> Thanks again for your help,
> Jeff
>
>
> On Aug 17, 2011, at 9:16 AM, Unidata netCDF Support wrote:
>
> > Hi Jeffrey,
> >
> >> We are a small non-profit working on Fusion Energy R&D.
> >>
> >> Our name is "EMC2 Fusion Development Corporation". You can view our
> >> website at:
> >>
> >> http://www.emc2fusion.org/
> >>
> >> I use NetCDF heavily in our research. I am having difficulty with
> >> porting issues, and would like to arrange for email support under the
> >> "Support to Institutions" conditions on your website.
> >>
> >> I would be the technical point-of-contact. My contact information is:
> >>
> >> Jeffrey E. McAninch, Secretary/Treasurer
> >> EMC2 Fusion Development Corporation
> >> 120 Parkway Dr., Ste A
> >> Santa Fe, NM 87544
> >> jeff@xxxxxxxxxxxxxx
> >> 505-412-5050
> >>
> >> Please let me know if there is any other information I need to provide.
> >
> > That's sufficient, thanks. Our support is on a best-effort basis, as it's
> > done by developers rather than a dedicated support staff. That means there
> > will occasionally be lapses in responsiveness as development needs dictate.
> >
> > Feel free to submit your questions to support-netcdf@xxxxxxxxxxxxxxxx and
> > we'll try to provide helpful responses as our development schedule allows.
> >
> > It's interesting to know about your use of netCDF in fusion energy research.
> > We know of another group of netCDF users at Culham Centre for Fusion Energy
> > (CCFE) in the UK. One of the researchers working there, Lynton Appel, has
> > contributed the new netCDF-4 C++ API, which is being used there for storing
> > experimental, analysis, configuration, model, and engineering data for their
> > MAST (Mega Amp Spherical Tokamak) project.
> >
> > --Russ

-------

That's all the cyber-stalking I can do atm. :twisted:
n*kBolt*Te = B**2/(2*mu0) and B^.25 loss scaling? Or not so much? Hopefully we'll know soon...

Torulf2
Posts: 286
Joined: Fri Sep 21, 2007 9:50 pm
Location: Swedem

Re: Polywell tidbits from nasa.gov... EMC2 CEO?

Post by Torulf2 »

I have declared my art of polywell free for promotion of the technology.
Its would be better if they got my name there. But I'm happy if I can give them some help.

KitemanSA
Posts: 6179
Joined: Sun Sep 28, 2008 3:05 pm
Location: OlyPen WA

Re: Polywell tidbits from nasa.gov... EMC2 CEO?

Post by KitemanSA »

Maybe you should include your name in your signature.
By the way, where is Swedem? ;)

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

Re: Polywell tidbits from nasa.gov... EMC2 CEO?

Post by DeltaV »

UWisc Madison alumni.

OK, he's got the plasma physics chops.

The analyzing power in elastic neutron-deuteron scattering at 3.0 MeV
J. E. McAninch Thesis (Ph. D.)--University of Wisconsin--Madison, 1993

(No e-copy)

Analyzing power in neutron-deuteron elastic scattering at Elabn=3 MeV
Phys. Rev. C 50, 589–601 (1994)
J. E. McAninch, L. O. Lamm, and W. Haeberli
Department of Physics, University of Wisconsin–Madison, Madison, Wisconsin 53706

Received 14 February 1994; published in the issue dated August 1994

A measurement of the analyzing power Ay(θ) in neutron-deuteron (n-d) elastic scattering below the deuteron breakup threshold is described, including a detailed discussion of the experimental apparatus and the treatment of systematic errors. The data provide a precise test of Faddeev calculations of the three-nucleon system and of the nucleon-nucleon interaction models used as inputs to these calculations. Ay was measured at six angles from 44.5 ° c.m. to 145.7 ° c.m. to a precision of (7–13)×10-4. Polarized neutrons, produced by the 3H(p→,n→)3He reaction, were incident upon the target, a deuterated organic scintillator. Scattered neutrons were detected in fast coincidence with the recoil deuterons in the target. A computer simulation of the experiment was used to compensate for a number of systematic errors. Particularly important were corrections for neutron multiple scattering, accidental coincidences, and finite geometry effects. The Ay data have a 2.2% scale factor uncertainty associated with uncertainty in the polarization of the incident neutron beam. The incident neutron polarization was measured in a separate experiment using n-4He scattering from a liquid helium scintillator. The neutron polarization measurement also yielded an improved value for the polarization transfer coefficient [Kyy(0°)=0.650±0.019] in the 3H(p→,n→)3He reaction at Elabp=3.80 MeV. A comparison of the Ay data to Faddeev calculations shows that the discrepancy in Ay observed previously at higher energies continues below the breakup threshold. A comparsion of the Ay data to a recent phase shift analysis of proton-deuteron (p-d) scattering indicates that observed differences between n-d and p-d analyzing powers are only partially explained by Coulomb effects.
APS » Journals » Search » Search Results -- 3 results found for Author:J. E. McAninch

Hydrologic and Geochemical Controls on the Transport of Radionuclides in Natural Undisturbed
Arid Environments as Determined by Accelerator Mass Spectrometry Measurements

Geosciences and Environmental Technologies Division
Earth and Environmental Sciences Directorate
Lawrence Livermore National Laboratory
April, 2000


Absolute calibration of 10Be AMS standards
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Volume 258, Issue 2, May 2007

MSimon
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Location: Rockford, Illinois
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Re: Polywell tidbits from nasa.gov... EMC2 CEO?

Post by MSimon »

I wonder if Dr. Mike knows about this.
Engineering is the art of making what you want from what you can get at a profit.

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

Re: Polywell tidbits from nasa.gov... EMC2 CEO?

Post by DeltaV »

More tidbits from Skynet --er-- Google:

http://www.mail-archive.com/pythonocc-u ... 01515.html
2010/11/10 Jeffrey E. McAninch <j...@emc2fusion.com>

I am building a Python/Fortran 95 based simulation environment for some physics simulations.

I am interested in reading a Solidworks model (ported for instance to STL)
and querying xyz locations to populate a simulation mesh, which I will then
write out as a NETCDF database, which will be the input to my simulation code.
http://shake2.esscc.uq.edu.au/pipermail ... 00010.html
Jeff,

so your rho will be an expression or do you need to read in data?

Lutz

-----Original Message-----
From: Jeffrey E. McAninch <jeff at emc2fusion.com>
To: Lutz Gross <l.gross at uq.edu.au>
Subject: Re: [Escript_users] Examples of escript for 3D electrostatic
(poisson) with boundary conditions?
Date: Mon, 19 Apr 2010 09:21:36 -0600

Lutz,


Thanks for the link. I got sidetracked for the last few days, but it
looks like your tools will work well for me.


I am working on a simplified, poor-man's plasma physics code. Though,
with all the packages that have python
interfaces available, I'm starting to think I might reach a higher level
of sophistication that I had originally anticipated.


So to answer your question, ultimately the rho will the time-dependent
net charge distribution of the ions and electrons
.


Thanks,
Jeff




On Apr 18, 2010, at 5:13 PM, Lutz Gross wrote:

> Take a look at
> http://esys.esscc.uq.edu.au/esys13/nigh ... node4.html
> This is more or less what you want. How exaclty is rho defined?
>
> Lutz
>
>
> Lutz Gross
> Earth Systems Science Computational Center
> School of Earth Sciences
> The University of Queensland
> http://www.esscc.uq.edu.au
>
>
>
> ______________________________________________________________________
> From: Jeffrey E. McAninch [mailto:jeff at emc2fusion.com]
> Sent: 17-Apr-10 [Sat] 0:56
> To: Lutz Gross
> Subject: Re: [Escript_users] Examples of escript for 3D electrostatic
> (poisson) with boundary conditions?
>
>
> Lutz,
>
>
>
> Thanks for the offer to help.
>
>
> Essentially I need to do the following (expressed as python
> meta-code):
>
>
>
> # p is a regular 3D mesh
> # with shape (3,101,101,101)
> #
> p = numpy.meshgrid[-1:1:101j,-1:1:101j,-1:1:101j]
>
>
> # phi_bdy is the defined "boundary" value
> # is_bdy is a logical telling whether a given point
> # on the mesh has a defined Vbdy or not
> #
> # phi_bdy.shape is (101,101,101)
> # is_bdy.shape is (101,101,101)
> #
> phi_bdy,is_bdy = set_boundary_values(p)
>
>
> # rho is some charge density function on p
> # (would be 0. whereever is_bdy is False)
> #
> # rho.shape is also (101,101,101)
> #
> rho = charge_density(p)
>
>
> # so need to solve the Poisson equation
> # del_squared(phi) = rho
> # on the mesh
> phi = poisson_solver(p,phi_bdy,is_bdy,rho)
>
>
> Does it look to you like the tools in escript/finley would
> be a good starting point for trying to build "poisson_solver"?
>
>
> This is a relatively simple, time-independent PDE, but is the
> basis for what will evolve into a more complicated
> electromagnetic solve
.
>
>
> Also, the example above is for ~1e6 mesh points,
> but will ultimately be shooting for ~1e9 mesh points, so MPI
> is a big plus, which is why your tools caught my attention.
>
>
> Thanks for any help, examples, pointers you could provide.
>
>
> Jeff McAninch
>
>
>
>
>
>
> On Apr 14, 2010, at 7:44 PM, Lutz Gross wrote:
>
>
>
> > Not really but I am happy to help here.
> >
> > Lutz
> >
> > -----Original Message-----
> > From: Jeffrey E. McAninch <jeff at emc2fusion.com>
> > To: escript_users at esscc.uq.edu.au
> > Subject: [Escript_users] Examples of escript for 3D electrostatic
> > (poisson) with boundary conditions?
> > Date: Wed, 14 Apr 2010 18:01:51 -0600
> >
> >
> > New to this list...
> >
> > Are there examples of using escript for 3D electrostatics with boundary conditions?
> >
> > –––––––––––––––––––––––––––––
> > Jeffrey E. McAninch
> >
> > jeff at emc2fusion.com

Teemu
Posts: 92
Joined: Mon Oct 17, 2011 10:15 am

Re: Polywell tidbits from nasa.gov... EMC2 CEO?

Post by Teemu »

Well, that writing is not from NASA personnel, but it is some high school science project "National Space Settlement Contest Proposal" that has been put up on nasa.gov so not getting all sources, or titles or other stuff exactly right is pretty understandable.

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