Photo de stock - PRODUCTION - 29 September 2022, Hamburg: A staff member rides his bicycle along the tunnel next to the Hera particle accelerator at the German Electron Synchrotron (DESY) in Hamburg. HERA is an underground ring accelerator over six kilometers long, the world's most precise electron microscope for studying the internal structure of the proton. From 1995 to 2007, the HERA experiments H1, ZEUS and HERMES were carried out, and their data analysis is still ongoing. Photo: Ulrich Perrey/dpa. - Hamburg/Hamburg/Germany

Photo de stock: PRODUCTION - 29 September 2022, Hamburg: A staff member rides his bicycle along the tunnel next to the Hera particle accelerator at the German Electron.

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