at LNF (Laboratori Nazionali di Frascati)
HERMES stands for HERa MEasurement of the nucleon Spin at DESY
The experiment was designed and constructed by a large international collaboration of about 200 scientists from 34 institutions in 10 countries in Europe, Asia and North America.
The experiment was installed in the HERA East Hall and commissioned in 1995.
The Frascati group is responsible for the electromagnetic calorimeter.