Archived - Dave Xanatos - Fusor Foundations

Current images of fusor efforts, components, etc. Try to continuously update from your name, a current photo using edit function. Title post with your name once only. Change image and text as needed. See first posting for details.
User avatar
Dave Xanatos
Posts: 111
Joined: Tue Apr 22, 2014 5:59 pm
Real name: Dave Xanatos
Location: Western Massachusetts, USA
Contact:

Archived - Dave Xanatos - Fusor Foundations

Post by Dave Xanatos » Wed Apr 30, 2014 2:52 pm

So I am going to make the attempt at (to start) a Demo Fusor, while simultaneously developing a system to make my own D2 from D2O using a PEM cell. Being the owner of an old house with a lot of repairs necessary, my budget for my fusor isn't going to be as high as I'd like, so I believe this is where I also make my request to be placed on the scrounger's list :) I'm pretty much set on the electronics side (used to build Tesla coils, and I'm an electronics engineer) - what I'm mostly going to be in need of - parts and advice - will be on the vacuum and fuel generation/delivery end of things. I just this past week learned what's really meant by high vacuum. Before that I thought my Shop Vac might do the trick!

The images below show where I am in my collecting so far. Not shown are several 5kV and 10kV NSTs, about 40' of 1/4" flexible copper tubing which I believe will be my D2 delivery tubing, and a whole bunch of misc items that are incidental to the build.

I am very thankful to Jake Hecla for his donation of a HyVac Products HyperVac model 100 vacuum pump and the High Voltage Feed Through (well the feed through wasn't a donation, but still... :) ). I've just downloaded all the PDFs for the unit including the exploded parts diagram, and when I get the gallon of HyVac DirectDrive Oil, I'll be rebuilding the unit and restoring it to as close to new as I can. That pump uses KF16 couplings...

The electronics components shown below are representative only - I have many more of most of these (except the two oil-poly caps, those are my only two).

And this weekend I anticipate scoring another dozen or more 16kV microwave oven diodes at our annual electronics recycle event (and maybe a few flyback transformers as well).

Here we go...

Dave
idj1.jpg
idj2.jpg
idj3.jpg
hvtp2.jpg
It would take decades of work, by thousands of scientists, in a particle accelerator powered by dump trucks of flaming grant money! - Professor Farnsworth/FUTURAMA

User avatar
Dave Xanatos
Posts: 111
Joined: Tue Apr 22, 2014 5:59 pm
Real name: Dave Xanatos
Location: Western Massachusetts, USA
Contact:

Re: Dave Xanatos - Fusor Foundations update

Post by Dave Xanatos » Sat May 03, 2014 4:57 am

Scored at NEAR Fest in NH today. Fantastic ceramic feed-through insulator, 6" overall length; a 30 Meg fat old wirewound, should find several uses; 12 x 12kv 1A aluminum base diodes - need to find more data on these; 6 x 30k 100W wirewound resistors, plus other random stuff, all totaled for under $30.00. Gotta love the ham fests! Pics below. Has anyone ever seen these diodes before? Google isn't being very helpful with the number, although I have located the manufacturer, so I'll call Monday.
Attachments
picture1119.jpg
picture1111.jpg
picture1109.jpg
picture1108.jpg
picture1106.jpg
It would take decades of work, by thousands of scientists, in a particle accelerator powered by dump trucks of flaming grant money! - Professor Farnsworth/FUTURAMA

User avatar
Dave Xanatos
Posts: 111
Joined: Tue Apr 22, 2014 5:59 pm
Real name: Dave Xanatos
Location: Western Massachusetts, USA
Contact:

Re: Dave Xanatos - Fusor Foundations Update

Post by Dave Xanatos » Wed Jun 04, 2014 10:29 pm

Some significant additions to the growing collection of fusor parts - 2.75" 4-way conflat and 2 PEM Electrolyzers to generate D2 from D2O. The conflat wasn't even my fourth choice... but I managed to get it for a price that didn't go out of sight. It's a place to start, anyway, I can always upgrade once the first demo is working.

And I also finished the rebuild of the HyVac 1000 vacuum pump from Jake Hecla. Works great, runs quiet, strong vacuum... just need a gauge now.

Slow and steady...

Dave

DSC00869.JPG
DSC00870.JPG
DSC00871.JPG
DSC00872.JPG
DSC00873.JPG
It would take decades of work, by thousands of scientists, in a particle accelerator powered by dump trucks of flaming grant money! - Professor Farnsworth/FUTURAMA

User avatar
Dave Xanatos
Posts: 111
Joined: Tue Apr 22, 2014 5:59 pm
Real name: Dave Xanatos
Location: Western Massachusetts, USA
Contact:

Re: Archived - Dave Xanatos - Fusor Foundations

Post by Dave Xanatos » Fri Aug 01, 2014 12:48 am

Vacuum work can now begin in earnest! I got an Edwards WRG-SL via ebay and it seems to work. It has some cosmetic issues with the case but the unit seems fully functional and clean. Before I even hook up my KF to CF adaptors, I'm just going to run pressure tests on the pump, fittings and gauge connections to be sure I can get what should be a reasonable roughing pump vacuum with no leaks. I figure it'll be easier to verify each stage first before progressing to the next.

Never thought I'd be so excited about something that really sucks! :)

Pics of gauge & 16 to 25 adapter hooked up attached.
DSC01104.JPG
DSC01105.JPG
DSC01106.JPG
It would take decades of work, by thousands of scientists, in a particle accelerator powered by dump trucks of flaming grant money! - Professor Farnsworth/FUTURAMA

User avatar
Dave Xanatos
Posts: 111
Joined: Tue Apr 22, 2014 5:59 pm
Real name: Dave Xanatos
Location: Western Massachusetts, USA
Contact:

Re: Archived - Dave Xanatos - Fusor Foundations

Post by Dave Xanatos » Mon Oct 06, 2014 2:19 am

So I've been silent on here, but not stagnant - see photos below. I'm developing the system monitor for my fusion efforts. Rather than separate voltage & current panel meters, vacuum meters, etc., I thought I'd put it all on a video overlay so it could all be on the same screen as the video of the fusion plasma. Right now it's a small 7" diagonal display, but it uses a standard composite video, so I can display it on a larger screen as desired.

The video overlay is a nice pre-made module from Decade Engineering, the BOB4. The system is driven by a BS2px from Parallax. I have a real-time clock built in (lower left on screen, live data), and a 5-counter CT505 chip that I use to pick up the counts from my gamma detectors (G1-G3) and my as-yet-to-be-built neutron counters (N1 & N2) - all lower right. I know I shouldn't get anything really over background on the gammas, but I have a bunch of tubes and I built a run of circuits for them, so why not stick a few in just for fun...

My vacuum pressure gauge (Edwards WRG) displays in the upper right (simulated at the moment, but it's just a simple ADC with a correspondence table), and the temperature of the chamber wall displays beneath that (live data).

Upper left is the all important voltage and current data (simulated at the moment). Voltage is taken into an LM358 voltage follower and an ADC through a 300M and an 50k voltage divider, with the bottom of the divider chain at +12v, to give me a swing of +12v at 0vdc and +7vdc at -30kvdc, roughly. Current is monitored on the "ground" side of the PS across a 10 ohm 50W wirewound resistor, again through an ADC.

Everything is sequentially polled by the BS2px microcontroller about 3 times per second.

All data is logged in CSV format to an 8Gig memory stick for recording runs... whenever they finally happen.

And because I am a goofball, I also added an EMIC2 text-to-speech module so the thing talks to me. It reads out the startup sequence, and will alert me as various presets are achieved - roughing pressure achieved, neutrons detected, stuff like that.

My goal is to get familiar enough with the parameters of my given setup that I can automate the sequence to achieve fusion, so I can basically flip a switch and it'll bring the initial vacuum down, switch on the diff pump at the right point, when the pressure's down to e-5 or so (whatever it turns out to be for the system) it'll tweak the D, and when the optimal pressure of D is achieved, it'll ramp the voltage and current and adjust for maximum N count.

That's the goal anyway. :)

For now, it's fun just building the monitor and control system.

The image on the screen is just the innards of my 2.75 conflat cross through the viewport. It's a cheap B&W camera for now, I'll use a color camera for the actual unit.

Happy to share details if anyone is interested in a similar setup.

Dave
DSC01292.JPG
DSC01293.JPG
It would take decades of work, by thousands of scientists, in a particle accelerator powered by dump trucks of flaming grant money! - Professor Farnsworth/FUTURAMA

User avatar
Dave Xanatos
Posts: 111
Joined: Tue Apr 22, 2014 5:59 pm
Real name: Dave Xanatos
Location: Western Massachusetts, USA
Contact:

Plasma Cam Mount Complete

Post by Dave Xanatos » Mon Nov 10, 2014 12:05 am

After finishing up some winterizing around the yard today, I got to work on some Fusor stuff. Today I built the mount for the Plasma Cam, see the pics. I built it so it has a great range of adjustment and can accomodate different brands and mounting patterns of cameras in case I ever cook the one that's in there now. Took about 3 hours to fabricate this thing, but I think it'll do the job well and maybe even block a few stray x-rays as long as the voltage stays relatively low :)

Dave
plasmacam01.JPG
plasmacam02.JPG
plasmacam03.JPG
plasmacam04.JPG
plasmacam05.JPG
plasmacam06.JPG
plasmacam07.JPG
plasmacam08.JPG
plasmacam09.JPG
It would take decades of work, by thousands of scientists, in a particle accelerator powered by dump trucks of flaming grant money! - Professor Farnsworth/FUTURAMA

User avatar
Andrew Robinson
Moderator
Posts: 686
Joined: Sun Aug 11, 2013 5:54 am
Real name: Andrew Robinson
Location: Raleigh, North Carolina
Contact:

Re: Archived - Dave Xanatos - Fusor Foundations

Post by Andrew Robinson » Mon Nov 10, 2014 4:21 pm

Looks good Dave!
I can wire anything directly into anything! I'm the professor!

User avatar
Dave Xanatos
Posts: 111
Joined: Tue Apr 22, 2014 5:59 pm
Real name: Dave Xanatos
Location: Western Massachusetts, USA
Contact:

Re: Archived - Dave Xanatos - Fusor Foundations

Post by Dave Xanatos » Fri Jul 10, 2015 10:17 pm

Hi folks... I haven't gone away, just haven't really needed to post much. Basically, I've gotten some demo plasma in my original configuration, so I'm building it up into a nice self-contained unit that I can take around to libraries/schools/etc., and give some talks on what fusion is, the differences between fission and fusion, the state of the art, and the possibilities and pitfalls. Once I get this up & running, I'll post videos to secure my status in the "demo plasma club" :) For now, here's some pics of the rebuild into what used to be a file cart!!! Perfect for the demo fusor. These pics were from 6/21/2015, and I've added much since then. Working my a** off to pay the bills, so time is limited, sometimes I only get half an hour a week to work on this... but I'll finish it!
Attachments
fusor2.jpg
fusor1.jpg
fusor5.jpg
fusor4.jpg
fusor3.jpg
It would take decades of work, by thousands of scientists, in a particle accelerator powered by dump trucks of flaming grant money! - Professor Farnsworth/FUTURAMA

User avatar
Richard Hull
Moderator
Posts: 11636
Joined: Fri Jun 15, 2001 1:44 pm
Real name: Richard Hull

Re: Archived - Dave Xanatos - Fusor Foundations

Post by Richard Hull » Sat Jul 11, 2015 5:16 am

A very nice mobile show-and-tell fusor system.

Richard Hull
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
Retired now...Doing only what I want and not what I should...every day is a saturday.

User avatar
Dave Xanatos
Posts: 111
Joined: Tue Apr 22, 2014 5:59 pm
Real name: Dave Xanatos
Location: Western Massachusetts, USA
Contact:

Re: Archived - Dave Xanatos - Fusor Foundations

Post by Dave Xanatos » Thu Aug 06, 2015 3:03 am

So I finally managed to dedicate 2 hours to something not explicitly designed to pay the bills or repair the house... I added in the +5, +12 and +24 Vdc power supplies, and wired up the camera and video overlay board, and it's all working nicely so far. Still wishing I could win the lottery... :)
0805152148d.jpg
0805152148c.jpg
0805152148.jpg
0805152149.jpg
0805152149b.jpg
It would take decades of work, by thousands of scientists, in a particle accelerator powered by dump trucks of flaming grant money! - Professor Farnsworth/FUTURAMA

Post Reply