Vibration measurement for instrumentation and diagnostics

Experimental requirements at Bates place stringent excursion limits on some beam parameters and on measurements of beam properties such as position and charge. Steering elements and measuring devices may be affected by vibrations transmitted along the beam pipe from vacuum pumps and turbulent cooling water flows. A vibration measurement setup, capable of generating displacement spectra and detecting displacements of less than 100 nm at 20 Hz, has been used in detecting and correcting vibration induced beam parameter deterioration and measurement error. The measurement setup, plans for improvements and vibration monitoring on site are described.