**Principal Investigator:** Jeremy Green, Theoretical Physics Department, CERN, Geneva, Switzerland

**HPC Platform used:** JUQUEEN and JUWELS of JSC

**Local Project ID:** chmz37

Protons are composite particles: bound states of quarks and gluons, as described by the theory of quantum chromodynamics (QCD). Using lattice QCD, we know in principle how to use supercomputers to compute various properties of the proton such as its radius and magnetic moment, however this is very challenging in practice. A major part of this project was devoted to developing and studying methods for more reliable calculations, in particular for obtaining more accurate results in a finite box and for better isolation of proton states.