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Updated scintillator and power consumption

A project log for Pomelo: Hand-held gamma-ray spectrometer

Battery-powered instrument for gamma spectroscopy with ample interfacing options

mihaicuciucmihai.cuciuc 06/19/2024 at 17:300 Comments

Pomelo detector on the shoulders of giants

I got the scintillators I intended to use with this detector and have some performance plots with them in this project log. With them the hand-held detector is also starting to look better. I added top & bottom laser cut acrylic plates as basic protection of both electronics as well as of fingers from the ~80V generated by the bias circuit.

The detector consists of a top user interface & connectivity board based on the ESP32-C6 (Pomelo Zest), and a bottom gamma spectroscopy board (Pomelo Core). The power consumption of these two boards can be measured individually:

Pomelo Core:

Pomelo Zest:

On future board revisions I intend to gate the power to the LCD and SD card.

Here are some pictures of the detector with its laser cut acrylic protection plates.


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