The foundations of a 95 MVA motor-generator set for pulsed duty

The vibration forces produced by the 95 MVA motor-generator set for the main ring magnets of the 28 GeV proton synchrotron at CERN in Geneva recur cyclically every few seconds and necessitate a special foundation for the set. Its function is to prevent any disturbing vibration energy reaching the accelerator and to eliminate any build- up in oscillation from successive vibration pulses. The final design incorporates a platform mounted on helical springs and fitted with additional dampers. (4 refs).