Gamma Spectrometry Forum

Hi everyone, I’ve just uploaded a new version of my small ESP32/CYD gamma spectrometer project. This update adds a few useful spectrum display features: - two-point energy calibration - bin or keV display mode - optional smoothed spectrum curve over the raw histogram - automatic peak markers - LogX ...

Thanks Steven — neat setup! The UI is really nice. On my side it’s a bit different. I’m using the Arduino framework for the software, but running on an ESP32, which is way more capable than a typical Arduino board. You get dual cores and proper floating-point support, so you can start doing some fai...

Hi everyone, I’ve put together a small open-source gamma spectrometer project for the ESP32 "Cheap Yellow Display" (a popular "arduno ESP32 board" with a touchscreen that cost about 15 euros). It uses a Theremino PMT Adapter with a cheap I2S ADC board, and displays the spectrum, ...

Hi, Thanks for your reply. To give you an idea of the situation here are two spectra obtained with a crystal of LYSO. The first one is obtained with Theremino MCA without calibration, simply centered on the peak at 202KeV. We can see very well the peaks (supposed to be) at 202, 307 and the sum aroun...

Hello, I'm taking the liberty of taking up this thread because I also have 32SPE50 detectors. As indicated in this thread the tube would be an Hamamatsu R268. I connected a very simple high impedance voltage divider (10MOhm between each dynode and 1Mo between D11 and the anode as recommended here ht...

Hello, My name is Sylvain and I am an engineer and researcher (my main fields are computer science and signal processing). I am interested in science in general with a particular taste for physics. I discovered X/Gamma spectroscopy with the Theremino project and since then I built drivers and assemb...