Speaker
Description
Quantum sensing techniques offer significant advantages in the low-energy detection regime and show strong potential for sub-picosecond timing applications. In the context of the Future Circular Collider (FCC), expanding the excellent single-photon resolution demonstrated by Superconducting Nanowire Single-Photon Detectors (SNSPDs) to charged particles, would open the door to applications such as precision luminometry, potentially achieving precision levels in the order 10−4 %. We thereafter plan to assess SNSPD efficiency, spatial/temporal resolution, and energy response with charged particles, laying foundation for future SNSPD-based detectors in collider experiments.
In this presentation, we report on applications of SNSPDs devices based on materials with various compositions and superconducting energy gaps tested with laboratory 90Sr beta sources and 160 GeV pion beams at the CERN SPS. The devices are studied in terms of their detection efficiency, timing, and spatial response within a EUDET-type MIMOSA-26 beam telescope, offering 5 µm tracking resolution. A pair of HPK LGADs providing 30 ps timing reference, combined with a CROC pixelated ROI trigger and a high-bandwidth (>3 GHz) data acquisition system, are employed. Synchronization with the SPS spill structure is achieved through dedicated electronics.
We compare the response of different materials to charged particles, investigating variations in geometrical characteristics such as nanowire width. Detector efficiency and preliminary insights into their potential for tracking and luminometers applications are discussed.
