Hamamatsu Photonics’ Advanced Detectors Drive CERN’s Antimatter Research

August 17, 2026

Hamamatsu Photonics Japan

Overview

Hamamatsu Photonics has released a new “Behind the Science” feature, highlighting its pivotal role in CERN’s quest to unravel the mysteries of matter-antimatter asymmetry. Their high-sensitivity photodetectors and photomultiplier tubes are essential for detecting faint, high-speed signals in particle physics experiments. This showcases the company’s significant contributions to fundamental physics and understanding the universe’s most profound questions.

In Depth

Background

The profound asymmetry between matter and antimatter remains one of the most significant unsolved problems in modern physics, holding keys to understanding the universe’s evolution and fundamental structure. The European Organization for Nuclear Research (CERN) stands at the forefront of this quest, conducting experiments at facilities like the Large Hadron Collider (LHC) to investigate particle creation and decay. This ambitious research necessitates state-of-the-art detection technologies capable of functioning under extreme conditions and precisely measuring faint, ultra-high-speed light signals.

Hamamatsu Photonics has a long-standing legacy of pioneering advancements in optical science and technology. Its photodetectors are globally recognized as a standard in high-energy physics, broadly contributing from fundamental research to industrial applications, and are integral to CERN’s efforts.

Key Findings

Hamamatsu Photonics’ newly released “Behind the Science” feature spotlights its indispensable photonics technologies that are instrumental in supporting CERN’s cutting-edge endeavors to unravel the mysteries of matter and antimatter. The company’s core products, specifically high-sensitivity photodetectors and photomultiplier tubes (PMTs), play a crucial role in particle physics experiments, enabling pivotal discoveries at the forefront of basic science.

These advanced detectors are critical for capturing the fleeting signals generated in CERN’s experiments. Hamamatsu Photonics’ Photomultiplier Tubes (PMTs) are renowned for their ability to convert and amplify extremely weak photons into measurable electrical signals. They are deployed in CERN’s large-scale detectors to capture Cherenkov radiation and scintillation light, produced by cosmic rays or high-energy collision experiments. Their exceptional high temporal resolution and sensitivity are vital for precise measurements of particle types, energies, and trajectories.

Furthermore, Silicon Photomultipliers (SiPMs) from Hamamatsu Photonics offer compact and robust detection solutions, particularly valuable in high magnetic field environments or confined spaces within CERN’s complex detector arrays. Their superior photon detection efficiency and low noise characteristics enable the construction of more sophisticated and efficient detection systems.

These optical detectors are seamlessly integrated into crucial components like calorimeters and particle identification systems across several major CERN experiments, including ATLAS, CMS, and LHCb. By forming the backbone of these vast data collection infrastructures, Hamamatsu Photonics’ technologies are directly contributing to addressing fundamental questions about the universe’s origins and the enigmatic asymmetry between matter and antimatter.

Source: https://www.hamamatsu.com/eu/en/news/news-all.html

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