Search found 943 matches

by Sesselmann
02 May 2015, 21:54
Forum: Introductions >> Start Here !
Topic: G'day everyone from John
Replies: 7
Views: 5820

Re: G'day everyone from John

John, Thanks for migrating to the new forum, and sharing your efforts, it is just amazing how many clever ideas you guys have come up with to improve your spectra. Stabilizing the temperature at the detector end has always been tricky, but your solution sounds simple, and it would be great if you ca...
by Sesselmann
02 May 2015, 21:47
Forum: Detector drivers
Topic: Software Defined Radio instead of sound card?
Replies: 4
Views: 6157

Re: Software Defined Radio instead of sound card?

Pieter, I was just watching this video on the hackRF https://youtu.be/4Lgdtr7ylNY and Michael Ossman mentioned one could tap directly into the baseband analog port with a signal +- 1V, that's pretty much in the range of a PMT signal output, and sample at 20 MHz. Since I don't have one of these devic...
by Sesselmann
02 May 2015, 10:16
Forum: Introductions >> Start Here !
Topic: Jim in Los Alamos
Replies: 1
Views: 2677

Re: Jim in Los Alamos

Jim,

Welcome to the forum, would love to know more about your business, do you have a web site?

I might consider adding another forum for high voltage physics as it goes hand in hand with what we do here.

Steven
by Sesselmann
01 May 2015, 21:54
Forum: Introductions >> Start Here !
Topic: Fred's Intro
Replies: 1
Views: 2784

Re: Fred's Intro

Hi Fred, Aha a special welcome to fusioneers, first of all because I have been there and done that, and second because the ability to activate materials with neutrons, opens up a whole new and exciting book of gamma spectra. Maybe we should add another forum for other science projects. I built three...
by Sesselmann
01 May 2015, 21:34
Forum: Introductions >> Start Here !
Topic: Hi members
Replies: 9
Views: 6236

Re: Hi members

Hi Luuk,

Glad to have you on board. I know you through Karl, I believe you helped him out with a NaI(Tl) detector recently.

You sound like the go to guy for crystal information.

Welcome to the forum..

Steven
by Sesselmann
01 May 2015, 19:01
Forum: Introductions >> Start Here !
Topic: My intro
Replies: 3
Views: 4721

Re: My intro

Emanuele, Welcome to the forum and thanks for the nice intro.. I am interested in your experiments with the first sensor solid state detector, have you found a circuit that works? I bought some X-100-7 as well, but have not had much success with my circuits, so would love to discuss this in teh hard...
by Sesselmann
01 May 2015, 13:36
Forum: Introductions >> Start Here !
Topic: Hello I am Colin from Canada
Replies: 1
Views: 2754

Re: Hello I am Colin from Canada

Hi Colin, Welcome to the forum, I see you have an issue with the definition of the 662 keV peak. I have occasionally seen split peaks caused by voltage drift when a recording is done from a cold start. Make sure you allow your HV power supply to warm up and stabilize before starting the recording. U...
by Sesselmann
01 May 2015, 13:21
Forum: Introductions >> Start Here !
Topic: iRad is me, Tom Hall
Replies: 5
Views: 5142

Re: iRad is me, Tom Hall

Hi Tom, You might be better known as iRad anyway :) Welcome to the forum, great to have someone with your experience you on board, feel free to use the trading post for your bits and pieces, I expect we will have quite a lot of DIY guys here. After all it's pretty hard to imagine anyone in radiation...
by Sesselmann
30 Apr 2015, 11:12
Forum: Detector drivers
Topic: Software Defined Radio instead of sound card?
Replies: 4
Views: 6157

Re: Software Defined Radio instead of sound card?

Pieter, Thanks for sharing your idea, I had not come across the hackRF device before, it certainly looks interesting, and I see the software is open source. I doubt that a higher sampling rate will improve resolution, as we are already at the limit's of NaI(Tl) performance, but one could push the bo...
by Sesselmann
30 Apr 2015, 08:29
Forum: Detectors
Topic: Making a New Batch of Detectors
Replies: 5
Views: 4849

Making a New Batch of Detectors

Hi Guys, I am about to start building a new batch of GS-1515 detectors, just got delivery of 30 spun aluminium housings. The next stage is to get the caps machined, and then carefully fit the caps to the housings. It is necessary to do some individual machining to the caps, as the housings vary by +...