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Instructions | Action Fields |
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Select Cavity Characterization EPICS display | Open embedded or start a script? |
Set the cavity drive level to 15%. Set the cavity to pulse mode | The Q0 script already does this calibration - just needs to interact with the user a bit |
Push the Pulsed SEL calibration GO button | provide button or script |
Verify the waveforms for forward and reverse are similar to those below when the calibration is finished. If the Pulsed SEL Calibration successfully completes, the "newly calculated" values will appear in the results box. | Need the waveforms displayed on this page or window open from previous tab. Need a figure showing what waveforms should look like |
Tweak the phase if the notch in the reverse power waveform doesn't touch the baseline | script snippet from q0 code |
If the Q loaded is between 3e7 and 5e7, hit the "Push" buttons to push the loaded Q and the cavity scale factor to the Current value registers and push the "Save" buttons. If not, re-do the pulsed SEL calibration. If after the second try, the value is not within specification, note the value and move on to the next cavity. (Need sanity check on cavity scale factor too) | Prompt user to check, then script can push buttons. I think eventually we want the loaded Q in the CSV file. |
Calculate the Probe Qext by pushing Go in the Probe Q calculator section. Log the Probe Q in the elog. | again with the enter value into python variable for later writing to CSV and elogging, whatever we decide |
Ramp-up Cavity in Pulsed tab
If previous "tab" is just a script, maybe make it be just a few steps on this tab.
Instructions | Action Fields |
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Go to Pulsed LLRF display | Open embedded or start a script? |
Set the drive level to 15% and RF On Time to 70 ms. Push "Go." Waveforms will appear and display the calculated cavity voltage based on the Loaded Q calculated above. | |
Verify the radiation monitor is logging for the cavity. | |
Slowly increase the Drive Level in 5% steps manually (clicking "Go" after each change) until the cavity amplitude reaches AUSE_SRF or the radiation level exceeds 50 MR/hr (0.5 mSv/hr) | |
Record the maximum Drive Level used | Push button to store in python variable. |
If the cavity faults before reaching 16.6 MV or the usable amplitude:
| Maybe some buttons to help here or at least show the interlocks |
Lower the Drive Level to 20% and turn off the RF drive. |
Ramp-up Cavity in SELAP tab
Instructions | Action Fields |
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Go to Overview Screen | Open embedded or start a script? |
Select SEL mode. Set amplitude to 5 MV and turn on RF. | buttons or script |
Adjust the stepper tuner, if necessary to bring the detune frequency within range of the piezo control, typically 5 Hz | Show detune frequency and provide access to stepper motor controls |
Set piezo to "Integrator" mode and verify that the piezo tracks the detune frequency. | Buttons, plots |
Go to SELAP mode. | button |
Increase the amplitude in 1 MV steps up to the maximum amplitude determined during the pulsed testing. | |
Push the RF Controller button at the top of the page
| Embed the display |
Record radiation if any for each cavity under test during the SELAP operation. | Link to elog? |
Measure the microphonics during SELAP operation
| Show the waveform and values here and script to put values in elog and maybe save them for writing to CSV when done. |
Leave the cavity running for 1 hour. If the cavity trips, follow the instructions in section XXXX and begin another 1 hr run. After the third trip, note progress, set the amplitude to 5 MV and turn off the RF and SSA. | |
At the end of the 1 hour run, run the pulsed SEL calibration to measure loaded Q (now that the FPC is warm). If different from 4.1E7+-5%, make a note in the elog so that the FPC can be adjusted during a tunnel access. | Script to measure and show results |
Set the amplitude to 5 MV and turn off the RF and SSA. | Buttons to do things or a script |
Record the new useable amplitude, AUSE_SRF. | buttons to do things |
Create CSV summary file. | Pushbutton. |
12-Hour Full Cryomodule Run tab
Instructions | Action Fields |
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Reset interlocks for each cavity | Script that shares problems with the user |
Push buttons to start the 15! striptools to monitor info during the run | |
Push the button for SRF Cavities Overview | |
Push the button for the cryo overview display | |
Push the button for the magnet control | |
Set all cavities to 4 MV amplitude and turn the RF State "On." Select SELAP mode. | |
Ramp all cavities to 16.6 MV or the useable amplitude, which ever is lower | |
Turn on and degauss the quadrupole magnet. Turn on XCOR and YCOR. Trim all to 8.5 kG. | |
Maintain stable operation for 12 hours | |
Turn cavities and magnets off. |