Replacing The Engine In Your Car While You Are Still Driving It [PowerPoint]
Eric A. Bjorklund · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 2015
The scope of the project included the following: install new network backbone, replace 201 MHz rf tubes, replace low-level rf system, replace timing system, replace industrial I/O system, replace beam synchronous data acquisition system, replace fast protect reporting system, new wire scanner hardware, and new beam position/phase monitor hardware--all of this to be done while continuing to deliver beam to users. Lessons learned, for anyone contemplating a similarly ambitious upgrade: You can’t replace the whole system at once. Some compatibility must be maintained between the old and new systems. Always have a way to fall back. Have sympathy for the operations staff. You will be surprised.