| Time | Item | Who | Notes |
|---|
| 20 | Jorge's piezos | Jorge | - Jorge presented on his piezo ML feedback work.
- Previous work had models made/trained on simulation data.
- Took measured data on CM20, 8, 7, 19 (cav 1-2).
- Will now train models with measured data.
- Dan - when do you want to try this on a real cavity
- Jorge - maybe in a month or two. Goal of the controller is to set amp and phase.
- Sebastian - piezo will work harder than it is now? Should we worry about lifetime?
- Jorge - paper on piezo lifetime are out there. Should be considered/calculated since piezo will be more active. Yuri paper?
- Want to try this on CM19 cavities with microphonics
- If it works, will have to add it to firmware
|
| 15 | 1.3 GHz meas | John/Clarice | - Clarice gave slides on HOM 1.3GHz measurement.
- Sebastian - acceptance test should have data on how the notch filter is tuned.
- We can use that to spot check another another CM
- John - were test at temperature?
- Sebastian and Janice - acceptance test was done at both
- Sebastian pulled up traveler to see if power data is there. Qext is included
- John - work backwards from Qext to get power?
- Sebastian - No we should check trends only / correlate low Q to higher power coupled out, don’t back calculate
- Janice - We can check if this matches the measurements John/Clarice made
- Sebastian/Jing - There were some HOM measurements during commissioning.
- All other CMs are terminated at the CM with attenuators/loads at the flange
- Jing - load on flange is able to handle 1W
- John - installed over 1W attenuators at the flange
|
| 10 | Software updates | Sonya | - Diagnostics were added to CM32, we shouldn't notice a difference
- DFCold landing PV will be changed to an integer
- CM32 will also get new interlocks (only this PV)
- This shouldn't impact things much
|
