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Description
The Target component of the European spallation source is a heavy 2.6m diameter wheel that rotates at 23.3rpm. The target is supported by rotating machinery that includes an 8m tall rotor, a multi-functional drive unit, a vacuum feedthrough seal and a rotary seal interface to a powerful helium cooling system. This complex mechanical system is equipped with many monitoring functions to record the behavior of the system, supervise its mechanical integrity and provide automatic machine protection.
This contribution to ICANS briefly presents the sensor technology selected for each monitoring function, raw data acquisition technology, signal processing technology and the data logging system. Furthermore, this contribution presents some samples of the measured data. The monitoring functions include bearing vibration monitoring, rotor displacement monitoring, HRU displacement monitoring, helium pipe moment monitoring, torque monitoring, bearing temperature monitoring and target wheel sector temperature monitoring.