The arcMS R package addresses the challenges posed by proprietary and open-source high-resolution mass spectrometry data formats by providing functions to collect MSE data from the Waters UNIFI software and store it in the efficient Apache Parquet format, facilitating fast, easy access, and compatibility with various programming environments. This solution facilitates the manipulation of complex mass spectrometry data, including ion mobility or other additional dimensions, enabling potential integration into efficient and open-source workflows.