Search found 943 matches

by Sesselmann
16 Aug 2022, 12:05
Forum: Detectors
Topic: Cebr3 problem
Replies: 3
Views: 147

Re: Cebr3 problem

Luuk,

It was painful just reading your report, I can't imagine how the client must feel when his 2x2x2" CeBr3 turns into a pile of dust....

Steven
by Sesselmann
16 Aug 2022, 11:59
Forum: Detectors
Topic: CsI(Tl) crystal problem
Replies: 2
Views: 131

Re: CsI(Tl) crystal problem

Luuk, Thanks for sharing. This brings into question the kind of quality control procedures at the manufacturers. One would think that homogenous mixing of the chemicals would be one of the key steps. I also experience inconsistent qualty control from manufacturers and in some cases crystals are labe...
by Sesselmann
16 Aug 2022, 10:25
Forum: Introductions >> Start Here !
Topic: Greeting from Austria!
Replies: 1
Views: 134

Re: Greeting from Austria!

Hello Matthias, Welcome to the forum, it sounds like you have come to the right place. Make sure to share your own experiences as well as reading up on other peoples experiments, it keeps the forum alive. Sorry about the spambot counter measures, but it's the only method that works, we haven't had a...
by Sesselmann
09 Aug 2022, 09:38
Forum: General discussion
Topic: Secondary Cosmic Rays
Replies: 0
Views: 134

Secondary Cosmic Rays

Hi all, For those of you fascinated by cosmic rays, Marek Dolleiser (Author of PRA software) has just shared with me a paper documenting his post retirement research on the subject. In typical Marek fashion, the paper is fascinatingly detailed and leaves no room for hand waving. I read the paper onc...
by Sesselmann
04 Aug 2022, 09:46
Forum: The lounge
Topic: Jewelery from Scintillation Crystals
Replies: 1
Views: 94

Re: Jewelery from Scintillation Crystals

Jonathan,

Thanks for posting, maybe there are opportunities for me 😂

Some people here might not know I also have a jewellery business.

Steven
by Sesselmann
30 Jul 2022, 10:11
Forum: Introductions >> Start Here !
Topic: Greetings from Chicagoland
Replies: 1
Views: 158

Re: Greetings from Chicagoland

Aaron, Welcome to the forum, great to have you on board. Your experience and library of manuals will come in handy for sure. I recently set up a dedicated forum for old and new manuals here: https://www.gammaspectacular.com/phpBB3/viewforum.php?f=24 Not much in it yet, but hopefully it will develop ...
by Sesselmann
27 Jul 2022, 17:21
Forum: Detectors
Topic: CapeSym CSI-14x25c-SIPM-T and GS-USB-PRO
Replies: 8
Views: 247

Re: CapeSym CSI-14x25c-SIPM-T and GS-USB-PRO

Just a brief update on this project. The tiny Capesym detector is somewhat awkward, so I have been thinking about what to do with it, so today I made up a 3D printed holder for it. I made it like a square cup with double walls. My intention is to fill some lead shot into the 6 mm wall cavity and clo...
by Sesselmann
24 Jul 2022, 12:39
Forum: Detectors
Topic: CapeSym CSI-14x25c-SIPM-T and GS-USB-PRO
Replies: 8
Views: 247

Re: CapeSym CSI-14x25c-SIPM-T and GS-USB-PRO

Mike, Funny, I was just looking at these, so I'm glad you can share your experiences. Some questions that come to mind if you find any real-world answers: I am no expert on SiPM's at lest not yet, my initial findings are they are still expensive compared to PMT's but I think it is likely that the pr...
by Sesselmann
23 Jul 2022, 19:23
Forum: Detectors
Topic: CapeSym CSI-14x25c-SIPM-T and GS-USB-PRO
Replies: 8
Views: 247

Re: CapeSym CSI-14x25c-SIPM-T and GS-USB-PRO

Here is a follow up to my last post... After testing the SiPM detector on a breadboard, I built the circuit onto a small circuit board. this improved noise and made it easier to work with. circuit.jpg I solved the voltage drift problem by adding a 30V zener diode in parallel to the 100K resistor, so...
by Sesselmann
23 Jul 2022, 13:38
Forum: Detectors
Topic: CapeSym CSI-14x25c-SIPM-T and GS-USB-PRO
Replies: 8
Views: 247

CapeSym CSI-14x25c-SIPM-T and GS-USB-PRO

Hi All, The subject of Silicone photomultipliers has come up several times recently and I wasn't sure how to deal with it, so I invested in a tiny CapeSym CsI detector just to have a play with. The model number is CSI-14X25C-SIPM-T https://capescint.com/product/macropixel-csi-14x25c-sipm-t/ (No asso...