Accurate Calibration Method for High-Energy Physics Sensors

Thursday 13 March 2025


Researchers have developed a new method for calibrating sensors used in high-energy physics experiments, allowing for more precise measurements and improved detection capabilities.


The MALTA2 sensor is designed to track particles at high rates and low detection thresholds, making it an essential tool for scientists studying the fundamental nature of matter. However, achieving accurate results requires a precise calibration process, which can be time-consuming and challenging.


To address this issue, researchers have developed a simple procedure that uses a dedicated charge injection circuit and an Fe-55 source to calibrate the sensor’s threshold setting. The method involves injecting a known amount of charge into the sensor and measuring the resulting voltage signal.


The results show that the calibration process is highly accurate, with an average deviation of just 12% from the expected value. This level of precision is crucial for high-energy physics experiments, where even small errors can have significant impacts on the accuracy of measurements.


One of the key advantages of this new method is its ability to be performed quickly and easily. The calibration process takes only a few minutes, making it ideal for use in experimental settings where time is limited.


The researchers also tested the sensor’s performance under different irradiation conditions, including neutron and gamma radiation. The results showed that the sensor remained accurate and reliable even after exposure to high levels of radiation.


This new method has important implications for the field of high-energy physics, as it enables scientists to make more precise measurements and improve their detection capabilities. It also opens up new possibilities for using MALTA2 sensors in a wider range of applications, including medical imaging and material analysis.


Overall, this research demonstrates the power of innovative thinking and collaboration in advancing our understanding of the fundamental nature of matter. By developing new methods and technologies, scientists can push the boundaries of what is possible and make significant breakthroughs in their field.


Cite this article: “Accurate Calibration Method for High-Energy Physics Sensors”, The Science Archive, 2025.


High-Energy Physics, Sensor Calibration, Malta2, Charge Injection Circuit, Fe-55 Source, Threshold Setting, Particle Tracking, Detector Performance, Radiation Resistance, Precision Measurement.


Reference: Lucian Fasselt, Ignacio Asensi Tortajada, Prafulla Behera, Dumitru Vlad Berlea, Daniela Bortoletto, Craig Buttar, Valerio Dao, Ganapati Dash, Leyre Flores Sanz de Acedo, Martin Gazi, et al., “Charge calibration of MALTA2, a radiation hard depleted monolithic active pixel sensor” (2025).


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