Next-Generation Cosmic Muon Detector: The CosmicWatch v3X

Monday 15 September 2025

The CosmicWatch Desktop Muon Detector v3X is a compact, low-cost, and portable device designed for detecting ionizing radiation, including cosmic-ray muons. This latest iteration of the CosmicWatch detector builds upon previous designs, incorporating significant hardware and firmware improvements that enhance sensitivity, usability, and data acquisition capabilities.

At its core, the v3X is a plastic scintillator paired with a silicon photomultiplier (SiPM). The scintillator is designed to detect the ionizing radiation emitted by cosmic-ray muons, while the SiPM amplifies and processes the signals generated by these interactions. A custom-designed electronics board handles signal processing, onboard data storage, and communication with external devices.

One of the key upgrades in the v3X design is its use of a more sensitive scintillator material. This allows the detector to detect muons with greater efficiency and accuracy, making it an ideal tool for educational and research applications. Additionally, the v3X’s compact size and low power consumption make it easy to integrate into various experimental setups or even deploy in remote locations.

The detector’s user interface is also notable, featuring a built-in OLED display that provides real-time feedback on detector status and data acquisition. This makes it easier for users to monitor and control the device during experiments. Furthermore, the v3X can store data locally on an SD card or transmit it wirelessly via USB connection.

The CosmicWatch Desktop Muon Detector v3X has already shown promising results in several applications. For example, researchers have used the detector to study cosmic-ray muons and their interactions with matter. The device’s compact size and portability also make it well-suited for use in high-altitude balloon flights or other remote experiments.

In addition to its scientific potential, the v3X is designed to be accessible to students and educators. With a total component cost under $100 and a build time suitable for high school students, the v3X is an attractive option for educational institutions looking to introduce students to particle physics and detector design.

Overall, the CosmicWatch Desktop Muon Detector v3X represents an exciting development in the field of particle detection technology. Its improved sensitivity, usability, and data acquisition capabilities make it an ideal tool for researchers and educators alike, and its affordability and portability ensure that it will be a valuable asset in many different experimental settings.

Cite this article: “Next-Generation Cosmic Muon Detector: The CosmicWatch v3X”, The Science Archive, 2025.

Muon Detector, Particle Detection, Cosmic Rays, Radiation Detection, Scintillator Material, Silicon Photomultiplier, Electronics Board, Data Acquisition, Educational Tool, Portable Device

Reference: Spencer Axani, Masooma Sarfraz, Miles Garcia, Collin Owens, Katarzyna Frankiewicz, Janet M. Conrad, “CosmicWatch: The Desktop Muon Detector(v3X)” (2025).

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