HEP2026: 42nd Conference on Recent Developments in High Energy Physics and Cosmology [NTUA] Jul 8 – 11, 2026

Session

Detectors

10 Jul 2026, 17:40

Main Hall (Level 1) (National Technical University of Athens)

Conveners

Detectors

• Ioannis Kopsalis (National Technical Univ. of Athens (GR))

45. Characterization of SiPMs using Radiation Sources for Quantum Random Number Generation

Evangelos Xirotyris Chrysos (National Technical Univ. of Athens (GR))

10/07/2026, 17:40

In this work, a Silicon Photomultiplier (SiPM) detector was
assembled and experimentally characterized using the CAEN Premium SiPM setup. The detector response was studied under controlled conditions using pulsed LED laser illumination, enabling the extraction of key SiPM parameters such as gain, dark count rate, optical crosstalk, after-pulsing probability, and charge resolution. An absolute...

39. Environmental Monitoring for the ATLAS ITk Barrel Integration

Georgios Katselis (National Technical Univ. of Athens (GR))

10/07/2026, 18:00

As part of the preparations for the High-Luminosity Large Hadron Collider (HL-LHC), the ATLAS experiment is undergoing major detector upgrades to cope with the significantly increased collision rates and data volumes expected during future operation. One of the most important upgrades is the replacement of the current Inner Detector with the new all-silicon Inner Tracker (ITk), designed to...

44. Development and Characterization of an Environmental Parameter Monitoring System for the ATLAS ITk

Nikolaos-Anastasios Kontogiorgis

10/07/2026, 18:20

As the ATLAS experiment prepares for the High-Luminosity upgrade of the Large Hadron Collider (HL-LHC), the transition to the new, all-silicon Inner Tracker (ITk) presents significant engineering challenges. Operating in a high-radiation environment, the ITk requires constant and precise environmental monitoring to protect its sensitive silicon sensors. Specifically, keeping the dew point well...

48. Contactless Determination of Martensitic Phase in Austenitic Steels

Tatiana Damatopoulou

10/07/2026, 18:40

In this presentation we report results on the detection of martensitic phase in the SS316 austenitic steel grade during stress – strain and non-monotonic stress tests. Although the austenitic steels do not exhibit magnetic properties, the accumulated stresses due to their stress or fatigue result in martensitic phase transformation. The development and increase of the martensitic phase is the...