Search found 627 matches

by Andrew Seltzman
Sun Dec 15, 2019 3:16 am
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Amptek Digital Pulse Processor
Replies: 7
Views: 460

Re: Amptek Digital Pulse Processor

Got 3x pulse processors and 1x of the Si-PIN diode. it pretty much works out of the box, make sure you install the winusb drivers or it won't connect via usb. I got a good XRF spectrum of stainless steel with this unit. I was using one of these photoionizer units as an x-ray source (9.5kev peak): ht...
by Andrew Seltzman
Sat Dec 07, 2019 10:57 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Amptek Digital Pulse Processor
Replies: 7
Views: 460

Re: Amptek Digital Pulse Processor

There are also sellers selling the matching Si-pin diode: https://www.ebay.com/itm/NEW-Si-PIN-Detector-Element-with-PA230-Preamplifier-25mm-2-1mil-Be-Window/123346334252?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649 https://www.ebay.com/itm/NEW-Amptek-Si-PIN-Detector-w-PA230-PreAmp-25mm...
by Andrew Seltzman
Sat Dec 07, 2019 6:42 pm
Forum: Items For Sale
Topic: Digital X-ray dosimeters on ebay 15keV+ sensitivity
Replies: 0
Views: 142

Digital X-ray dosimeters on ebay 15keV+ sensitivity

There are a few Mirion DMC3000 dosimeters listed for a very good price, these go down to 15keV x-ray energy so they should be well matched for fusor use. This is a rare find at this price since most digital dosimeters are designed for gamma only with a 50keV minimum sensitive energy range and not mu...
by Andrew Seltzman
Sat Dec 07, 2019 6:39 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Amptek Digital Pulse Processor
Replies: 7
Views: 460

Re: Amptek Digital Pulse Processor

I bought 2 of the used ones, the seller did not respond to a $250ea offer.
From the Amptek site, it appears the power supply for the pin diode is on the PC5 board which is independent from the DP5 and can be removed entirely (or probably just disconnected).
by Andrew Seltzman
Sat Dec 07, 2019 3:45 pm
Forum: Announcements and Site Administration Topics
Topic: I want to help fix fusor.net!! (join up listing)
Replies: 19
Views: 750

Re: I want to help fix fusor.net!! (join up listing)

I, Andrew Seltzman, want my editing privileges restored.

If we overwrite a broken attachment with a similar/newer/clearer file, will this confuse a later possibly automated fix?
by Andrew Seltzman
Fri Dec 06, 2019 4:16 am
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Amptek Digital Pulse Processor
Replies: 7
Views: 460

Re: Amptek Digital Pulse Processor

Nice find, I'll have to buy some :)
by Andrew Seltzman
Thu Nov 28, 2019 11:31 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Spellman Power Supplies
Replies: 7
Views: 660

Re: Spellman Power Supplies

See if this seller will sell just the negative output version.
https://www.ebay.com/itm/LNR0311-SPELLM ... SwJhdbkGRi
by Andrew Seltzman
Fri Nov 01, 2019 9:48 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Anode layer ion source. Operation pictures
Replies: 70
Views: 61533

Re: Anode layer ion source. Operation pictures

300C-350C is the typical upper limit for SmCo magnets.

If you were arcing a NST into the source it would either melt the anode ring or overheat the magnet.
by Andrew Seltzman
Sun Oct 27, 2019 12:48 pm
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Anode layer ion source. Operation pictures
Replies: 70
Views: 61533

Re: Anode layer ion source. Operation pictures

The pasternack BNC connectors are hermetically sealed and will hold a vacuum, though not UHV since they use an elastomer o-ring to seal to the base plate; not a real issue in the vacuum ranges that fusors/shuttering/deposition runs at though. If rectified to DC then yes an NST would work, though mak...
by Andrew Seltzman
Mon Oct 14, 2019 4:54 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Non-Corrosive and/or Dielectric Liquid Cooling?
Replies: 16
Views: 1534

Re: Non-Corrosive and/or Dielectric Liquid Cooling?

Teflon and nylon tube are both good, as are viton o-rings. You can get teflon and nylon ferules and fittings from swagelok.