We control the
Chopper with computers that have “ftc” written on their labels. We have 3 different networks, you're probably reading this on one that says “ofc” on it now. “ftc” machines can be used to control most of the accelerator, until you get out of ARIS, but don't worry about that now. Ignoring a lot of technical information about the computers, there are different pages that control or display different things. One page is “
MPS Operator” and this is where we control the
Chopper. There are large, clearly labelled buttons that allow us to “Stop Beam” or “Start Chopper”, there is some confusing language regarding the
Chopper, normally when an Operator refers to the Chopper as “being on” or “starting” that actually means they're turning it off to allow beam to travel further down the beamline. “Stop Beam” then powers on the
Chopper and “Start Chopper” actually turns the
Chopper off and allows beam to continue along.