Search found 153 matches
- Wed Jan 06, 2021 4:42 pm
- Forum: Advanced Technical Discussion Area
- Topic: RGA to Analyze Ion Beam Composition
- Replies: 8
- Views: 781
Re: RGA to Analyze Ion Beam Composition
Joe, As you pointed out, I would imagine this depends on the accelerating potential of the RGA (likely a few hundred volts, I would guess), compared to the accelerating potential of your ion source. What is the bias of your source? For me personally, I likely would not alter an existing, working RGA...
- Mon Dec 21, 2020 9:39 pm
- Forum: Fusor Construction & Operation (& FAQs)
- Topic: Progress Update
- Replies: 22
- Views: 1391
Re: Progress Update
Joe,
Very nice setup. What type of ion source are you using?
Thanks!
-Scott
Very nice setup. What type of ion source are you using?
Thanks!
-Scott
- Fri Sep 04, 2020 9:23 pm
- Forum: Vacuum Technology (& FAQs)
- Topic: Who has the largest chamber? Any pics?
- Replies: 6
- Views: 1229
Re: Who has the largest chamber? Any pics?
The fusor built by myself, Tim Koeth, Jay Howson and Jim Krutzler uses a ~28" diameter spherical chamber.
We use a small turbo pump (50 l/s I think, I will have to check). It reaches low E-7.
-Scott
We use a small turbo pump (50 l/s I think, I will have to check). It reaches low E-7.
-Scott
- Sun Apr 05, 2020 11:26 pm
- Forum: Images du Jour
- Topic: Liquid cooled Demo Fusor cage
- Replies: 4
- Views: 1144
Re: Liquid cooled Demo Fusor cage
Nice! Stick with it. My friend and I spent ~1.5-2 years messing around with a demo fusor before we really got things moving on a real, neutron producing fusor.
These two pictures I attached were taken approximately 7 years apart.
These two pictures I attached were taken approximately 7 years apart.
- Sun Apr 05, 2020 12:46 am
- Forum: Fusor Construction & Operation (& FAQs)
- Topic: Fusor V construction - the process long running
- Replies: 48
- Views: 17778
Re: Fusor V construction - the process long running
I am curious why the tungsten needle in your ion source is at a negative bias with respect to the shell? I would also suggest a single hole or group of holes around the center axis, rather than many perforations. I have attached a picture of a successful deuterium ion source I have built. 1.2 kV acr...
- Wed Apr 01, 2020 8:54 pm
- Forum: Neutrons, Radiation, and Detection (& FAQs)
- Topic: Help using Canberra 8701 ADC for MCA and *more* Neutron Issues
- Replies: 6
- Views: 1509
Re: Help using Canberra 8701 ADC for MCA and *more* Neutron Issues
Luke, I am not familiar with the Canberra units, but my friend Jay Howson is. Below is a writeup he did on our website of how he made use of the Canberra modules for spectroscopy: http://www.nuclearphysicslab.com/npl/npl-home/spectroscopy/software_and_hardware/diy-canberra-system/ Sorry if this does...
- Sat Mar 28, 2020 4:55 pm
- Forum: Fusor Construction & Operation (& FAQs)
- Topic: Fusor V construction - the process long running
- Replies: 48
- Views: 17778
Re: Fusor V construction - the process long running
Robert,
It is likely a rotatable conflat. He will have to insert the inner SS ring with the knife edge. It looks like the feedthrough is welded or Silver Soldered to the outer SS ring. Look at the picture I attached for reference.
Scott
It is likely a rotatable conflat. He will have to insert the inner SS ring with the knife edge. It looks like the feedthrough is welded or Silver Soldered to the outer SS ring. Look at the picture I attached for reference.
Scott
- Sun Mar 22, 2020 5:30 pm
- Forum: Interesting Links
- Topic: "Nuclear Physics Lab" Website
- Replies: 4
- Views: 1336
"Nuclear Physics Lab" Website
Hi everyone, Over the past few weeks our amateur science group (Tim Koeth, Jim Krutzler, Jay Howson, Brian Beaudoin, Miriam Hiebert, Luke Gilde, and myself) have assembled a website which details all of our projects. It is still a work in progress (and will continue to be), but a lot of content has ...
- Wed Mar 11, 2020 2:49 am
- Forum: Vacuum Technology (& FAQs)
- Topic: McMaster Carr's oddly inexpensive turbopump
- Replies: 7
- Views: 1831
Re: McMaster Carr's oddly inexpensive turbopump
Ian,
A brand new Pfeiffer Pumping station is $500 cheaper than the Mcmaster listing on IdealVac: https://www.idealvac.com/NEW-Pfeiffer-H ... pp/P107317
Still not affordable for the amateur, but available nonetheless.
Scott
A brand new Pfeiffer Pumping station is $500 cheaper than the Mcmaster listing on IdealVac: https://www.idealvac.com/NEW-Pfeiffer-H ... pp/P107317
Still not affordable for the amateur, but available nonetheless.
Scott
- Sat Dec 14, 2019 3:09 am
- Forum: Fusor Construction & Operation (& FAQs)
- Topic: Fusor V Chamber
- Replies: 20
- Views: 8614
Re: Fusor V Chamber
I am by no means disagreeing with the statement: would "devour Deuterium like a vacuum cleaner." However, it is worth noting that larger systems maintain star mode at lower pressures. The fusor Tim Koeth and I built (larger than that chamber) maintains star mode between 2-4 mTorr. My 9" spherical ch...