Long-term Stability of the Diamond Light Source Storage Ring

The Diamond Storage Ring (SR) has been in operation since January 2007. This paper summarises a number of measurementsthat have been made over that periodto monitor the SR stability in height and position including general survey, Hydrostatic Levelling System (HLS), horizontal and vertical magnet corrector strengths as well as Radio Frequency(RF)measurementsthathavegivenanindication of changing circumference.