FICS Fusion Experiment

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Steven Sesselmann
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FICS Fusion Experiment

Postby Steven Sesselmann » Wed Jan 06, 2016 10:12 am

Some of you may be interested in my current project, I am building a particle collider or a fusor. It's not the first one, I have built three versions before this one, after building each one I realised how I could make improvements, so I built another one, so here is number four.

It is a high vacuum system with a linear accelerator tube having a low negative electrical potential on the cathode, molecules of Deuterium are ionised in the cathode, where some undergo fusion, releasing a neutron, an alpha particle and around 3.7 meV of excess energy. My projects always have some new elements which require R&D so I expect it will take up to one year to complete. I have made a good start over the Christmas break, but this initial work pictured below was simple brainless work and progressed fairly fast.

Providing I manage to get this apparatus to operate in a steady state mode, It should be able to produce neutrons on demand, which may enable some activation experiments, but neutrons are not the primary objective of the experiment, I am hoping to demonstrate a system of Fusion Induced Charge Separation, which is why I have called the experiment for F.I.C.S.

When a fusion reaction takes place a charged alpha particle is ejected with lots of kinetic energy, so when this takes place inside the cathode, the positively charged particle is shot up through the accelerator tube against the charge gradient, thereby leaving the cathode with another negative charge, using a system of diodes it should be possible to close the circuit and measure the fusion induced charge separation, well thats the plan anyway.

I shall post more as I make progress..


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Steel frame construction welded from 30x30mm steel tube.
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Finished steel frame with castors
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Faraday cage and vacuum fore pump fitted, turbo pump alignment in progress
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Two stage vacuum pump and Glassman high voltage supply
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Concept drawing of flight tube
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Concept drawing of flight tube.
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Steven Sesselmann | Sydney | Australia | gammaspectacular.com | groundpotential.org | rephopper.com | beejewel.com.au |

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Geoff
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Re: FICS Fusion Experiment

Postby Geoff » Wed Jan 06, 2016 3:32 pm

Very exciting! I know I'll be following along on your project. Definitely beyond my ability level.
Geoff Van Horn

Anchorage and Deadhorse Alaska

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Steven Sesselmann
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Re: FICS Fusion Experiment

Postby Steven Sesselmann » Sun Feb 14, 2016 10:01 am

Hi Guys,

Just a 6 minute progress report on my project, work, family and life in general means it's progressing slowly, but at least it's moving forward.


https://youtu.be/nwG_y3ZFV9g
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Progress report
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Steven
Steven Sesselmann | Sydney | Australia | gammaspectacular.com | groundpotential.org | rephopper.com | beejewel.com.au |

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Steven Sesselmann
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Re: FICS Fusion Experiment

Postby Steven Sesselmann » Sat Jul 23, 2016 3:10 pm

Hi Guys,

It has been a while since I posted news about my FICS fusion experiment, well that doesn't mean I'm not working on it, the fact is I have been making good progress. We now have vacuum, a major milestone for any fusioneer, not only vacuum but good vacuum with an acceptably low leak rate (harder to achieve than many realise).

People thought I was either crazy or ignorant when I told them I was going to glue my vacuum chamber together with Latex carpet glue, but with the right preparation natural latex forms a hermetic seal with minimal outgassing and is flexible enough to allow for thermal expansion between aluminium and glass.

Preparation of the glass and aluminium is the key to success, so with 50 micron aluminium oxide powder and water, I ground the two surfaces together until they were evenly smooth all over, with a matt active surface, I then rinsed the discs thoroughly in clean water followed by deionised water, before drying and gluing.

Well it's all together now and holding vacuum, so to all you skeptics out there, it works!

Here is the rig how it looks today, we are almost there...

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FICS Fusion rig
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This is the high voltage double ended accelerator, where you can clearly see how it has been glued together. I have a system of four turnbuckles to maintain a good tension on the stack at all times and hold it firmly so it doesn't move in the cage. The two ends are maintained at ground potential at all times. The high voltage bias is connected with the two red cables to disc 9 and 11 either side of the reaction chamber, and the reaction chamber is connected via a 400V Zener diode and the yellow cable, this arrangement is for electron suppression, so when we burn a fusion plasma in the chamber we prevent electrons escaping up the tubes, which is the primary source of energy loss in fusors.

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Double ended accelerator
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On the next picture we can see the gas inlet into the reaction chamber, this is another one of my own inventions, because I don't believe (and I think I am the only one) in a Coulomb force, because there isn't one, I will prove that soon. Feeding neutral gas into a low potential plasma generates slow ions, and my objective is to make them stand still, this is contrary to all other fusion efforts where scientists believe they need a high temperature plasma to overcome the imaginary "Coulomb" force.

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Fusion chamber wiring
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Controlling the gas flow into the chamber at low potential turned out to be tricky, I had to develop a whole battery powered system floating at -50,000V with fibre optic data connection. I'm still developing this part of the project.

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FICS Pressure controller
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This is the main source of power, it's a Spellman 125 kV lab supply and can be (will be) controlled remotely from labView. These units are not cheap, but I got it on eBay with a minor fault and fixed it.

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125 kV Glassman power supply
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The following image shows the fore vacuum system, which consists of a two stage rotary vane pump and a stainless steel tank. The tank isn't essential, but it is a safety reservoir in case the rotary fails (prevents killing the turbo).

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Fore vacuum pump
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The next picture is the DAQ (Data Acquisition Module), here I am using four analog inputs and two analog outputs. These connections allow me to control power supply and monitor the actual consumption current remotely with LabView.

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NI-6008 Data acquisition module
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Following is my deuterium cylinder, it is bigger than a typical lecture bottle and inconvenient to float at high potential so I have made a system of valves and connections which allow me to pull a vacuum in a small sample cylinder and decant a small amount of deuterium into the sample cylinder. Very little is needed to run the reactor.

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Deuterium decanting system
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next up is the Varian V200 turbo pump, this one has given me a bit of a headache lately as it became hot, causing the grease to run out of the bearing and cease up, so I had to pull it apart and fix it, it was a big job, but now working fine.

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Varian V200 turbo pump
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Here you can see how the vacuum system is connected to the stack with NW25 fittings, for the absolute vacuum purist NW25 fittings are not the thing to use for ultra high vacuum, but it's a trade off between convenience and perfection. I am not a purist I just want to run this experiment and achieve an outcome. My current leak rate in this total volume of around 5 litres is 1 micron every 10 seconds and the turbo pump easily copes with that.

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Vacuum Connections to end caps
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So that where I am up now...

Still to do is finishing the remote control of the gas handling system and then I will be ready to learn how to drive this monster.

As a pioneer in FICS fusion I am building a machine that no-one including myself knows how to drive, so it's a matter of figuring it out, I guess the Wright brothers had the same problem, they built the first aeroplane but non of them knew how to fly ;)

Steven
Steven Sesselmann | Sydney | Australia | gammaspectacular.com | groundpotential.org | rephopper.com | beejewel.com.au |

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Steven Sesselmann
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Re: FICS Fusion Experiment

Postby Steven Sesselmann » Sat Jul 23, 2016 4:59 pm

Here is the front end of the Labview VI (Virtual Instrument) I'm developing.

For safety reasons and for the purpose of logging the experimental data I am using a Labview data acquisition system. With Labview I can remotely operate the experiment from a safe distance and apply various programming loops to maintain stability of the system.

The four virtual slide potentiometers (bottom centre) are my set controls;

  • Voltage
  • Current
  • Chamber pressure
  • gas flow rate

The meter panels on the left are actual volts out and actual current. The meters on the right from the top are, Vacuum gauge between turbo pump and accelerator stock, vacuum gauge for actual reaction chamber, and bottom meter is for F.I.C.S (Fusion Induced Charge Separation) which is what this experiment is all about.

The big meter top centre and the graph shows differential current, current in less FICS current, so in simple terms if it swings to the right its using power and if it swings to the left it's generating power.

Colourful isn't it :)

Vi2.PNG
Labview VI
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Steven Sesselmann | Sydney | Australia | gammaspectacular.com | groundpotential.org | rephopper.com | beejewel.com.au |

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Steven Sesselmann
Posts: 296
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Re: FICS Fusion Experiment

Postby Steven Sesselmann » Sun Jan 08, 2017 9:12 pm

Here is the latest on my fusion experiment.

https://youtu.be/-58nPYXxIRU

Steven
Steven Sesselmann | Sydney | Australia | gammaspectacular.com | groundpotential.org | rephopper.com | beejewel.com.au |


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