Search found 138 matches

by Scott Moroch
Wed Dec 11, 2019 12:42 am
Forum: Ion Gun Design and Construction (& FAQs)
Topic: 30keV Deuteron Source
Replies: 9
Views: 418

Re: 30keV Deuteron Source

Roberto, To your first question: yes, the bottom of the glass tube is the gas inlet Second question: Yes, I have read about those ratios. The spacing was increased for that photo to demonstrate variability. Ultimately the spacing will be based on a SIMION model I have built of the entire beam line. ...
by Scott Moroch
Sat Dec 07, 2019 6:22 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: 30keV Deuteron Source
Replies: 9
Views: 418

Re: 30keV Deuteron Source

Ian,

The ceramic on the Einzel Lens is Macor. The first and third electrodes of the lens are grounded and the middle is at a positive potential (400-1kV depending on desired focal length).

Scott
by Scott Moroch
Fri Dec 06, 2019 7:31 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: 30keV Deuteron Source
Replies: 9
Views: 418

Re: 30keV Deuteron Source

Ian, The ceramic is a high voltage break, electrically isolating the ion source from ground and allowing it to float at 20kV. See the full CAD rendering with a circuit below. The voltage drop across the diodes allows for a DC plasma discharge, and the voltage drop across the resistor is the extracti...
by Scott Moroch
Fri Dec 06, 2019 3:35 am
Forum: Ion Gun Design and Construction (& FAQs)
Topic: 30keV Deuteron Source
Replies: 9
Views: 418

30keV Deuteron Source

I have been working on developing a Capacitively coupled ion source and Einzel lens for generating 30keV deuterons. Right now the source is being operated in DC discharge mode with just air. The anode is floating at 17kV and the cathode at 15kV. A chain of 400 volt zener diodes are used to self bias...
by Scott Moroch
Tue Jul 30, 2019 2:08 am
Forum: Images du Jour
Topic: Magnetic Mirror
Replies: 5
Views: 2388

Magnetic Mirror

This post shows a magnetic mirror built recently by Tim Koeth, Jay Howson, myself and Jimbo Krutzler. It was a fun project!

Everything was acquired surplus. More to come! Enjoy the photos.
by Scott Moroch
Sun Jul 28, 2019 12:45 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Joe Gayo's lab tour
Replies: 69
Views: 21771

Re: Joe Gayo's lab tour

Ah, I see. I apologize, I misunderstood. Thought time was the x-axis . Nice plots.

Scott
by Scott Moroch
Sat Jul 27, 2019 11:52 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Joe Gayo's lab tour
Replies: 69
Views: 21771

Re: Joe Gayo's lab tour

Are you sure your units are right? I have never heard of anyone reaching 1E-10 with a turbo. Best I have seen is E-8. Perhaps someone with more experience can weigh in.

What are the time units? Minutes? Days?

Nice work though!

Scott
by Scott Moroch
Tue Jun 25, 2019 3:06 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Joe Gayo's lab tour
Replies: 69
Views: 21771

Re: Joe Gayo's lab tour

Joe, Your effort is really impressive and it definitely shows in the numbers. There has been a lot of talk recently that these smaller fusors are capable of outputting a higher neutron rate, for a given kW input, than larger 6-10" devices. Intuitively, I am on board with this. However, up until your...
by Scott Moroch
Wed Jun 19, 2019 3:30 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Joe Gayo's lab tour
Replies: 69
Views: 21771

Re: Joe Gayo's lab tour

I was interested in your 7-hole grid design. The models support the observations.

Simulation Video: https://www.youtube.com/watch?v=P5lp3Wu ... e=youtu.be

Initial distribution is circular, launched from the left with 0 KE. Grid at -60kV with respect to the chamber.
by Scott Moroch
Mon Mar 18, 2019 11:01 pm
Forum: Announcements and Site Administration Topics
Topic: Commentary on Doing Fusion
Replies: 17
Views: 7354

Re: Commentary on Doing Fusion

Richard, I strongly agree with this change. I believe the neutron club should make no mention of age. The longer the title of "worlds youngest" continues, the further this forum develops into a hand-holding community for 8-12 year olds attempting to build a fusor. First and foremost, I think this is...