Introduction:
The Cavity Summary Display is similar to the Klystron displays used in LCLS and FACET, but instead of displaying klystron information, the Cavity Summary Display shows cavity faults for all cavities in cryomodules 01 - 35. The GUI also displays whether a cavity's SSA is on and whether or not is has RF.
How to Launch the GUI:
To launch the Cavity Summary Display locally at an OPI, follow the instructions below:
- Open a terminal
- Type in set_profile srf
- Type srfhome. This will launch a PyDM version of SRF Home
- Click "Cavity Summary GUI." This is a PyDM GUI and typically takes 2-3 minutes to launch, so be patient!
Alternatively, you can use Launchpad to open the GUI by typing in "SC Cavity Summary Display."
Using the GUI:
Now that we've launched the GUI, we want to use it to help us troubleshoot and keep an eye on the cavities. The GUI is broken up into the four linac regions (L0B, L1B, L2B, and L3B) each with their own cryomodules (abbreviated as CM). Each of these cryomodules has 8 cavities.
The different cavity statuses are as follows:
- Green diamond with cavity number - This indicates that the cavity is healthy and has no faults.
- Gray octagon with three letter code (TLC) PKD - Cavity is parked (aka it has purposefully been tuned off frequency so that it will not affect the beam)
- Yellow triangle with TLC - Cavity has a minor fault.
- Red hexagon with TLC - Cavity has a major fault.
- Purple circle with TLC - The fault PV associated with the cavity is disconnected.
The different shapes used for these faults were chosen with the purpose of making the GUI red/green color blind accessible.
