CERN Researchers Develop Innovative Particle Detector for Future Experiments

Friday 21 March 2025


Researchers at CERN have made significant progress in developing a new type of particle detector that will play a crucial role in future experiments. The detector, known as ALPIDE, is a bent monolithic active pixel sensor (MAPS) designed to track subatomic particles with unprecedented precision.


The ALPICE detector is part of the upcoming upgrade to the Large Hadron Collider’s Inner Tracking System (ITS3), which will enable scientists to study fundamental forces and interactions in greater detail. The new detector is capable of detecting particles that interact with the surrounding material, providing a more accurate picture of particle collisions.


One of the key challenges in developing ALPICE was ensuring its ability to maintain high detection efficiency even when bent at different radii. Researchers tested the detector’s performance using high-energy particles and found that it consistently achieved efficiencies above 99.9% across various threshold settings.


The team also investigated the spatial resolution of the detector, which is critical for accurately reconstructing particle tracks. The results showed that ALPICE was able to achieve a spatial resolution of around 5 micrometers, comparable to that of flat ALPIDE sensors.


In addition to its detection capabilities, ALPICE features a unique geometry that allows it to study particles that graze the chip surface at shallow angles. This configuration enables researchers to investigate the properties of particles in a way that was previously difficult or impossible.


The development of ALPICE is an important milestone in the pursuit of advancing our understanding of the fundamental laws of physics. As scientists continue to push the boundaries of what’s possible, innovative technologies like this detector will play a vital role in driving discovery and expanding our knowledge of the universe.


In the coming years, researchers at CERN will work to integrate ALPICE into the ITS3 upgrade, paving the way for new insights into the mysteries of particle physics. The implications of these discoveries could be far-reaching, with potential breakthroughs in fields such as medicine, materials science, and energy production.


As scientists continue to explore the frontiers of human knowledge, cutting-edge technologies like ALPICE will remain essential tools in their quest for understanding the fundamental nature of reality.


Cite this article: “CERN Researchers Develop Innovative Particle Detector for Future Experiments”, The Science Archive, 2025.


Particle Detector, Alpide, Large Hadron Collider, Inner Tracking System, Its3, Maps, Bent Monolithic Active Pixel Sensor, Particle Physics, Cern, Fundamental Forces And Interactions.


Reference: Anton Andronic, Pascal Becht, Mihail Bogdan Blidaru, Giuseppe Eugenio Bruno, Francesca Carnesecchi, Emma Chizzali, Domenico Colella, Manuel Colocci, Giacomo Contin, Laura Fabbietti, et al., “Detection efficiency and spatial resolution of Monolithic Active Pixel Sensors bent to different radii” (2025).


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