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Plasma 2

October 29, 2018 at 12:42 am

The Fusor has produced a few more plasmas.  See below video.   Plasma_run from Tom McCarthy on Vimeo.   What you’re seeing is a plasma inside the vacuum chamber.  The wires are the tungsten grid that’s connected to the high voltage supply.  Chamber at ~10 microns and begins at ~6 […]


September 23, 2018 at 1:55 pm

Last weekend the Fusor produced a plasma for the first time, shown in the photograph below.  That plasma was at a voltage of about 4.5kV and 20mA current.  Pressure was roughly 10 microns. Plasma is the first sign of a Fusor really working.  It’s not fusion yet, but shows what […]

Conflat Leak

September 8, 2018 at 1:29 pm

In my previous post I wrote that I was aiming to do fusion last weekend. Once the high voltage line was fully wired, I was ready to evacuate the chamber and test the high voltage supply – 30 kv, 20 ma.  Pumping down the chamber takes some time, usually upwards […]

Nearing Fusion

August 30, 2018 at 10:29 pm

Vacuum system – Complete Deuterium line – Complete Metering – Complete High Voltage line – Nearing Completion I expect to be fusing in the next few days, having spent today and yesterday preparing the high voltage line.  This involves stripping down RG-58 coaxial cable and attaching lugs and ground wires, […]

Deuterium Line and Turbo Controller

April 30, 2018 at 7:09 pm

Great news.  The Turbopump controller, an NT 150/360 has been fixed.  One of the power transistors was blown, and it’s now on the way back to me from ProVac.  ProVac to the rescue again.  Vacuum system is all done now.  Will spin up the turbo when the controller arrives to […]

Inner Grid Construction

April 8, 2018 at 12:30 am

The vacuum system is fully hooked up, finito – Except that I’m waiting to hear back on the turbopump’s controller.  It wasn’t driving the turbo at all, but it’s just a case of plugging a cable in when it gets back.  The Fusor can even be run without the turbopump […]

Vacuum Progress

March 30, 2018 at 1:25 pm

Today I’m grappling with a turbopump issue.  I’m using an NT 150/360 controller, and TMP 150 pump, both provided very generously be Provac Ltd.  They’re a great unit, but I think the Edwards RV3 backing pump is struggling to back them, and the system isn’t operating smoothly.   As noted, […]

HV Power Supply

December 28, 2017 at 12:52 am

Won an auction for a high voltage power supply “in working condition” last night on eBay.   $100 + $50 shipping from the US for a Matsusada 30 kV, 20 mA negative polarity supply.  It would be preferable to have a higher voltage for experimentation, but it’s a great starting power […]

Current Status #1

September 2, 2017 at 8:03 pm

An update on where the Fusor is at:   Nearly done, honestly.  A handful of jobs to do prior to completion.  Main ones:  I’ve to finish ordering deuterium, and arrange a high voltage power supply.  Once they’re here, they’ve to be installed and then I’m set to go.  I’ve got […]

JET Visit

August 5, 2017 at 8:58 pm

JET – Joint European Torus operates out of the Culham Centre for Fusion Energy, CCFE in the U.K.  It’s between Cambridge and London. Mega Ampere Spherical Tokamak, MAST, also operates out of CCFE.  It’s a huge campus and JET is the largest fusion experiment in the world.  Excluding perhaps the […]