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.
A healthy cavity with no faults will display its cavity number on top of a green diamond. If a cavity does have a fault, there will be a three letter fault code displayed on top of a red hexagon. A gray hexagon with the three letter fault code PKD indicates that a cavity is parked (aka it has purposefully been tuned off frequency so that it will not affect the beam).
A purple circle indicates that the fault PV associated with the cavity is disconnected. A cavity with a three letter code (TLC) fault with a yellow triangle in the background indicates a minor fault, whereas a TLC in front of a red hexagon indicates a major fault. The different shapes used for these faults were chosen with the purpose of making the GUI red/green color blind accessible.
