There are two main workshops dedicated to the reliability of particle accelerator operation:
The WAO started in 1996 in Jefferson Lab, Virginia, USA, and is held every two to three years in America, Europe or Asia. The next WAO will be held in October 2014 in Germany. Follow the link to see all previous workshops.
The first ARW was held in Grenoble in 2002 and since then has been held in Canada, South Africa and Australia. It is normally held every two years. The next ARW will be held in Tennessee in 2015. Follow the link to see all previous workshops.