2025/08/07 by Yu Wang, Wang, Yu, Shubin Liu +13
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Instrumentation and Detectors (physics.ins-det) #Neutrino Physics Research #Particle Detector Development and Performance
paper · pdf · doi:10.48550/arxiv.2508.05096
openalex publication_date 2025/08/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Muon radiography is an imaging technique based on muon absorption in matter that allows measurement of internal details in hidden objects or structures. This technique relies on measuring cosmic-ray muons tracks accurately, which reflects the incoming muon flux from both the target object and the open sky. In this paper, we report on the construction of a high spatial resolution muography instrument based on Micromegas detectors. Using four layers of 400 mm × 400 mm Micromegas detectors, channel multiplexing circuits, and the versatile readout system, a moveable muography instrument named μSTC-R400 was designed and constructed. Results show that the channel multiplexing circuits can resolve hit positions correctly, and the spatial resolution of the detector is approximately 190 μm. Experiments were conducted at an under-construction subway tunnel and outdoors near a mountain, demonstrating the μSTC-R400's ability to maintain high spatial resolution outside the laboratory and its robustness in harsh environments.