Since early 1970s, French machines (SATURNE, MIMAS, GANIL, ESRF, etc.), LHC, Fermilab machines, Neutrino Factory, INR/Dubna, HERA, COSY, Synchrotron radiation at SPS, LEP and LHC, Fixed field accelerators, etc., etc.
Benchmarking against other codes :
BETA, COSY, MAD, PTC, etc., see references in Users' Guide
Benchmarking against accelerator experiments :
Pubs since 1970s, see Users' Guide and references therein, and see above