Fusor Forums

Hello everyone, I am happy to say that on October 14th, I achieved fusion. I have been practicing operation with my deuterium system for about a month now as I had to wait for my bubble dosimeter to arrive and wanted to have some practice in for when I actually measured neutron radiation. I began this project last year when I was in grade 11 with the completion of my first demo fusor. One year later, I have finally completed my fusor at 17 during my grade 12 year.

Fusor Parts:
Transformer: 120kV X-Ray Transformer
Ballast: MOT
Rectifier: 2 40kV diodes 2 20kv diodes in series (120kV) for each winding
Voltage Control: 20 amp variac
Primary Pump: Robinair 15600 6CFM
Secondary Pump: Alcatel 5081 Turbo Pump
High Vacuum Gauge: Ionization Gauge
Deuterium System: PEM equipped with an over under pressure system, drierite and a needle valve.

Data:
Time of Operation: 7 minutes and 30 seconds (450 seconds)
Voltage: 26kV average
Current: 30mA average
D2 Pressure: 5-15 microns
Neutron Data:
Detector Type: BD-PND Bubble Dosimeter, 22 bubble/mrem sensitivity
Number of Bubbles: 8
Distance: 12" (30.48cm) from the center of the grid (9" from shell + 3" from shell to center of grid)

Calculations:
Flux: (3600/450) * 8 * (8/22) = 23.27n/cm2/s
Isotropic surface area: 3.14 * 4 * 30.48^2 = 11,668.62cm^2
Total Isotropic Emmision Rate: 23.27 * 11,668.62 = 271,528.83 n/s

Fusor Set Up: Inner Grid: Detector: Me: Thanks to everyone who has provided insight along my fusor journey, I hope to continue working with my fusor and eventually conduct tests in the 50kV range.

Sam, I have entered your name in the Neutron Club listing.

You have done well and if you continue to work with your fusor, you will do much better.

Richard Hull

Thank you, Mr. Hull.

Congratulations for the good work and getting in the neutron club!

Thanks, Dennis.