Introduction:
Each cavity's LLRF system monitors various values and input bits that it uses as interlocks to turn off the cavity. If a cavity interlock trips, operators should CATER the issue, attempt to reset the interlock, and contact the area physicist if it doesn't reset. As always, please keep track of interlock trips and subsequent actions via the elog.
Most slide images are from Dan's, Sebastian's, and Janice's talks on 31 Aug 2021. Some are from Andy Benwell's talk 22 May 2020.
Also highly recommended is the Cryomodule Internal Photo Tourwhich details the components of a cryomodule and their functions.
Motivation
To make operation at such a high repetition rate economically viable, it is critical to minimize the amount of input RF power that is wasted as heat loss. Cavity performance is