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Study of the global alignment for the DAMPE detector

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DOI: 10.1016/j.nima.2022.167670

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DAMPE; Silicon-strip detector; Calorimeter; Global alignment

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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.
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.

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