Study of the global alignment for the DAMPE detector

The Dark Matter Particle Explorer (DAMPE) is designed as a high-energy particle detector for probing cosmic rays and gamma rays in a wide energy range. The trajectory of the incident particle is mainly measured by the Silicon-Tungsten tracKer-converter (STK) sub-detector, which heavily depends on the precise internal alignment correction as well as the accuracy of the global coordinate system. In this work, we carried out a global alignment method to validate the potential displacement of these sub-detectors, and particularly demonstrated that the track reconstruction of the STK can well satisfy the required objectives by means of comparing flight data and simulations.

Automated summary

In this study, the researchers validated the capability of the Silicon-Tungsten tracKer-converter (STK) to reconstruct particle trajectories by comparing flight data and simulations.