Page History

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GUI Procedure

Piezo Pre-RF Check

1. Turn cavity off
2. Enable piezo (set ACCL:LXB:XXXX:PZT:ENABLE to 1)
3. Set piezo to manual (set ACCL:LXB:XXXX:PZT:MODECTRL to 0)
4. Set piezo DC voltage (ACCL:LXB:XXXX:PZT:DAC_SP) to 0
5. Star the piezo pre rf test (set ACCL:LXB:XXXX:PZT:TESTSTRT to 1)
6. Wait for the piezo pre rf test to finish (wait while ACCL:LXB:XXXX:PZT:TESTSTS is 2)
7. Check test result
   1. If the test was not successful (ACCL:LXB:XXXX:PZT:TESTSTS is not 1)
      1. Throw an error
   2. If the test was successful
      1. Check if chain A passed (ACCL:LXB:XXXX:PZT:CHA_TESTSTAT is 0)
      2. Check if chain B passed (ACCL:LXB:XXXX:PZT:CHB_TESTSTAT is 0)
      3. If either chain didn't pass
         1. Throw an error
      4. If both chains passed
         1. Record piezo capacitance A (ACCL:LXB:XXXX:PZT:CHA_C)
         2. Record piezo capacitance B (ACCL:LXB:XXXX:PZT:CHB_C)

SSA Characterization

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1. 1 If harmonic linearizer
2. 0.8 if not harmonic linearizer

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1. Raise an error

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EPICS Screens

All screens for any given cavity can be gotten from either lcls-home (using SC gun)  or SRF Home > RF > Cavities > More

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GUI Procedure

Piezo Pre-RF Check

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SSA Characterization

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Cavity Tuning

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8π/9 and 7π/9

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Cavity Characterization

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Piezo With RF

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Ramp Up in SELAP

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1. Retry up to 2 more times
2. If the reset succeed within 3 total attemps
   1. Continue to step 5.e.i
3. If the reset fails after 3 total attempts
   1. Throw an error

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1. Throw an error

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1. Throw an error

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1. Throw an error

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1. Throw an error

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