Search found 749 matches

by Steven Sesselmann
30 May 2020, 20:27
Forum: Detector drivers
Topic: Gamma spectacular + Red Pitaya = Nuclear Dragon fruit?
Replies: 5
Views: 169

Re: Gamma spectacular + Red Pitaya = Nuclear Dragon fruit?

Conor Whyte wrote:
18 May 2020, 17:42

The interactive html document is a nice touch. -- I can't upload it here.
Would there be a way of showcasing interactive spectra from interspec on the page?
Conor,

Can you send me the HTML page, maybe I can drop it on the server.

Steven
by Steven Sesselmann
22 May 2020, 09:56
Forum: Spectrum
Topic: Alphaspec of Ra226
Replies: 7
Views: 144

Re: Alphaspec of Ra226

Peter,

Nice work, did you have the source directly in contact with the detector, if not what was the distance?

Steven
by Steven Sesselmann
20 May 2020, 14:07
Forum: Shielding
Topic: Modular Shielding. Mind the Gap?
Replies: 4
Views: 103

Re: Modular Shielding. Mind the Gap?

Regarding copper and tin, what I'm trying to understand is if the need for lead x-ray suppression is less as you get farther from the active area of the detector. Mike, there is actually an advantage to have the detector further away from the shield, but as you can imagine the cost of lead goes up ...
by Steven Sesselmann
20 May 2020, 09:26
Forum: Admin Announcements
Topic: Spambot Registrations still a problem
Replies: 0
Views: 76

Spambot Registrations still a problem

Hi Guys, Once again the forum has been under heavy attack by registration spambots. this results in hundreds of new user accounts, which then later attempts to post links to game sites and porn sites. The spammers seem to be mostly Russian. To clean up the site I have purged all users with zero post...
by Steven Sesselmann
20 May 2020, 09:17
Forum: Shielding
Topic: Modular Shielding. Mind the Gap?
Replies: 4
Views: 103

Re: Modular Shielding. Mind the Gap?

Mike, How you construct your shield depends entirely on what level of background suppression you need for your experiment in order to get statistically significant results. There are online calculators that will give you attenuation for various materials at various energies. Keep in mind that most o...
by Steven Sesselmann
17 May 2020, 20:02
Forum: Detector drivers
Topic: Gamma spectacular + Red Pitaya = Nuclear Dragon fruit?
Replies: 5
Views: 169

Re: Gamma spectacular + Red Pitaya = Nuclear Dragon fruit?

Conor,

Well done, nice hack.. , but ultimately our weakest link is still the detector, we need low cost high resolution gamma detectors that don't require cryogenic cooling.

Steven
by Steven Sesselmann
08 May 2020, 08:31
Forum: Introductions >> Start Here !
Topic: Hello from Connecticut, USA
Replies: 3
Views: 304

Re: Hello from Connecticut, USA

Hello Andrey,

Welcome to the forum, look forward to see what you have to share with us. Saw on your blog you have experience with cloud chambers (another one of my half finished projects).

See you around..

Steven
by Steven Sesselmann
28 Apr 2020, 08:39
Forum: Shielding
Topic: Tin, and Pewter, and Copper, and Iron, Oh MY!
Replies: 15
Views: 1160

Re: Tin, and Pewter, and Copper, and Iron, Oh MY!

Mike,

I buy my pewter from a company in the UK, they respond quickly and the sheets come nicely packed, the price is not too bad.

https://www.wentworth-pewter.com

Steven
by Steven Sesselmann
27 Apr 2020, 17:26
Forum: Detectors
Topic: Bicron Internal Voltage Divider
Replies: 2
Views: 481

Re: Bicron Internal Voltage Divider

Addison,

Yes, your suspicion is correct, the crystal is not encapsulated and the PMT's are glued directly to the crystal with a piece of glass and epoxy.

If it works I recommend leaving it, but if you really want to modify it you have to cut the top off and work on the PMT in situ.

Steven
by Steven Sesselmann
27 Apr 2020, 08:02
Forum: Introductions >> Start Here !
Topic: Hello from the Czech Republic!
Replies: 1
Views: 472

Re: Hello from the Czech Republic!

Hi Pavel,

Welcome to the forum, and yes you are right, gender equality hasn't made it to radiation detection yet, but we would love to see more women join the group.

Good luck getting up and running with spectrometry, it brings another dimension to your research.

Steven