This is what I got with my setup ( http://www.gammaspectacular.com/phpBB3/ ... f=16&t=411 ) from a trinitite sample.
8h with PRA:
and 6h with Theremino (equlizers only are used, but not on the sample, during callibration with Lu, Ra, Cs and K:
Should I expect more from this detector? How do you find this results?
Do you see something I didn't or more likely maybe something I saw is not really there? :)
Trinitite spectrum
-
Svilen
- Posts: 185
- Joined: 23 Sep 2016, 04:25
Trinitite spectrum
You do not have the required permissions to view the files attached to this post.
Last edited by Svilen on 13 Sep 2019, 19:46, edited 1 time in total.
-
pilgrim
- Posts: 94
- Joined: 06 Nov 2017, 03:28
Re: Trinitite spectrum
I see a very good linearity!
Beautiful spectrum! I think your setup works very well, especially considering the low activity of trinitite.
Beautiful spectrum! I think your setup works very well, especially considering the low activity of trinitite.
-
Sesselmann
- Posts: 1392
- Joined: 27 Apr 2015, 11:40
Re: Trinitite spectrum
Svilen,
I agree with Daniel, your spectrum looks good, and you are getting a good correlation between PRA and Theremino. When you make long recordings like this you just have to make sure the room has a stable temperature, otherwise you may see a bit of drift. The drift can be reduced by using a GS-PRO, but not completely eliminated, as the detector drifts as well.
You could try the drift stabilisation feature in Becqmoni it might tighten up the resolution a bit.
I agree with Daniel, your spectrum looks good, and you are getting a good correlation between PRA and Theremino. When you make long recordings like this you just have to make sure the room has a stable temperature, otherwise you may see a bit of drift. The drift can be reduced by using a GS-PRO, but not completely eliminated, as the detector drifts as well.
You could try the drift stabilisation feature in Becqmoni it might tighten up the resolution a bit.
-
Svilen
- Posts: 185
- Joined: 23 Sep 2016, 04:25
Re: Trinitite spectrum
Hi Steven and Daniel,
Thank you for your replies. I get roughly around 1-2Kev/degree shift even if the day is colder/warmer than the calibration day. Something like this happens definitely during the recording too. Yesterday I even wanted to ask how you maintain constant temperature? Maybe I can put the GS and the sound card in a temperature controlled box, but for the detector will be harder. Can one heat the castle somehow? I had somewhere a temperature controller with a heating pad with fine precise regulation for animals, but then I guess it would be a constant electromagnetic interference source wrapped around the castle also. Any ideas?
A 3x3" Detector and a GS pro is what I plan to upgrade to, but unfortunately at the moment it wouldn't be easily affordable.
BeqMoni is something I want to definitely try. A problem is the lack of documentation in English and I have to guess the things myself, but will do it. Karl Brehwens here wrote something short about it, will check if that helps.
Thank you for your replies. I get roughly around 1-2Kev/degree shift even if the day is colder/warmer than the calibration day. Something like this happens definitely during the recording too. Yesterday I even wanted to ask how you maintain constant temperature? Maybe I can put the GS and the sound card in a temperature controlled box, but for the detector will be harder. Can one heat the castle somehow? I had somewhere a temperature controller with a heating pad with fine precise regulation for animals, but then I guess it would be a constant electromagnetic interference source wrapped around the castle also. Any ideas?
A 3x3" Detector and a GS pro is what I plan to upgrade to, but unfortunately at the moment it wouldn't be easily affordable.
BeqMoni is something I want to definitely try. A problem is the lack of documentation in English and I have to guess the things myself, but will do it. Karl Brehwens here wrote something short about it, will check if that helps.
-
cicastol
- Posts: 86
- Joined: 19 Jul 2017, 21:39
Re: Trinitite spectrum
Nice spectrum, imho you could improve a lot the lower end spectra by using a bigger lead castle with more room inside the chamber for lowering backscatter.Svilen wrote: Should I expect more from this detector? How do you find this results?
-
Peter-1
- Posts: 170
- Joined: 07 Oct 2016, 01:45
Re: Trinitite spectrum
Hello,
here is my spectrum from 2017 with 4 gram of this glass. Peter
here is my spectrum from 2017 with 4 gram of this glass. Peter
You do not have the required permissions to view the files attached to this post.
-
pilgrim
- Posts: 94
- Joined: 06 Nov 2017, 03:28
Re: Trinitite spectrum
Hi guys, could you suggest me a reliable seller for a trinitite sample?
-
Svilen
- Posts: 185
- Joined: 23 Sep 2016, 04:25
Re: Trinitite spectrum
Hi Peter,
Nice spectrum! Thanks. I have really, as Ciro mentioned above, a lot of background in the lower energy range. Thanks for your remarks, Ciro. Yes, more lead is always better of course, but I really didn't think to leave some more space around the detector the time I planned the shielding..
Daniel, I sent you a PM ;)
Nice spectrum! Thanks. I have really, as Ciro mentioned above, a lot of background in the lower energy range. Thanks for your remarks, Ciro. Yes, more lead is always better of course, but I really didn't think to leave some more space around the detector the time I planned the shielding..
Daniel, I sent you a PM ;)
