Dr hab. Marcin Stolarski from the National Centre for Nuclear Research has been elected co-spokesperson of the COMPASS experiment. COMPASS is a high-energy physics experiment conducted at the Super Proton Synchrotron (SPS) accelerator at CERN in Switzerland, which aims to study hadron structure and hadron spectroscopy using high-energy muon and hadron beams.

COMPASS was launched in the summer of 2002. Data were collected gradually, with small pauses, and this phase of the experiment was completed in 2022. Almost 200 physicists from 13 countries and 25 scientific institutions are analysing the collected material, and among them are Polish representatives from the Warsaw University of Technology, the University of Warsaw and the National Centre for Nuclear Research.

Dr hab. Marcin Stolarski has extensive experience in conducting experiments such as COMPASS, AMBER and ATLAS. The main scientific interests of the COMPASS co-spokesperson include the spin structure of the nucleon and the application of neural networks and GPU-based techniques in particle physics. The NCBJ researcher in the COMPASS experiment was responsible, among others, for the alignment of detectors, the set of drift chambers, as well as serving as coordinator of analyses and member of the publication committee. Due to his significant contribution to several analyses within the COMPASS collaboration, he was recognised as a corresponding author in five publications.

At the National Centre for Nuclear Research, Dr Stolarski works in the High Energy Physics Division.