Thu Sep 26 13:00:03 UTC 2024: ## DIY Beta Detector: Student Creates Affordable Tool for Observing Invisible Particles
**Aachen, Germany** – Tim Kuhlbusch, a Ph.D. student at RWTH Aachen University, has developed an inexpensive and robust particle detector, dubbed the BetaBoard, which allows users to observe the invisible world of subatomic particles. Inspired by CERN’s S’Cool Lab DIY detector, Kuhlbusch aimed to create a more accessible and affordable option for classrooms and enthusiasts.
The BetaBoard utilizes a unique design incorporating three types of printed circuit boards, including a photodiode array, an RP2040 microcontroller, and a light-tight enclosure. By digitizing the signal directly at the photodiodes, the device eliminates noise issues encountered in previous designs and provides a clean signal via a USB connection.
Kuhlbusch further improved the design by integrating digital filters to mitigate noise from both the USB power supply and the AC power line. The device also features a serial interface that allows for communication with external devices, enabling data recording and visualization through a user-friendly Python script.
The BetaBoard, costing less than $15, offers a powerful and practical tool for exploring particle physics. While its sensitivity may be lower than research-grade detectors, it provides a valuable learning platform for understanding the fundamental principles of particle detection.
Kuhlbusch’s next steps include developing the ability to detect alpha particles, exploring ways to utilize cheaper photodiodes, and creating comprehensive documentation for classroom use. His innovative design opens up exciting opportunities for educators and individuals seeking to explore the hidden world of subatomic particles.
First Piper 