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Cryo Module # | Description |
01-35 | CM01-CM35, 1.3GHz cavity |
H1 | 3.9GHz Cryomodule 1, located in L1B and follows CM03 |
H2 | 3.9GHz Cryomodule 2, located in L1B and follows H1 |
Numbering of cavities within a cryomodule:
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| Name | Description | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GDES | Operation Gradient setpoint (MV/m) | |||||||||||||
| GACT | Measured gradient from cavity probe (MV/m) | |||||||||||||
| GMAX | Maximum allowable gradient (MV/m) | |||||||||||||
| GCAL | Gradient calibration scale factor, nominally 1. Multiply by this when calculating raw register value to set, so increasing GCAL increases output. | |||||||||||||
| ADES | Operation Amplitude setpoint (MV) | |||||||||||||
| AACT | Measured amplitude from cavity probe (MV) | |||||||||||||
| AMAX | Maximum allowable amplitude (MV) | |||||||||||||
| ACAL | Amplitude calibration scale factor, nominally 1. Multiply by this when calculating raw register value to set, so increasing GCAL increases output. | |||||||||||||
| PDES | Operation Phase setpoint (degrees, where 0 is on-crest) | |||||||||||||
| PACT | Measured phase from cavity probe (degrees) | |||||||||||||
| PREF | a.k.a.gold, phase offset used by LLRF to convert measured phase to one relative to on-crest operation, adjusted by beam phasing (detrees) | |||||||||||||
| FDES | Cavity detuning setpoint (Hz) | |||||||||||||
| FACT | Detune seen by the resonance system (Hz) | |||||||||||||
| Mode | RF mode (off, pulsed, SEL, GDR) | |||||||||||||
| RFCTRL | Master enable for an RF cavity (On, Off) \[How to distinguish this from the SSA specific RF enable register?] | |||||||||||||
| RFReady | Status of RF controls, (Ready, Not Ready) set to ready when control loops are closed and RF is continuous. Or will we ever run with pulsed RF? | |||||||||||||
| Quench | Status showing when a cavity quenches, from interlocks (Normal, Quenched) | |||||||||||||
| STAT | Status bits in software (define the bits) | |||||||||||||
| HSTA | Hardware status | |||||||||||||
| GTRACE | Gradient waveform from the cavity probe, which is used to calculate GACT (MV/m) | |||||||||||||
| PTRACE | Phase waveform from the cavity probe, which is used to calculate PACT (degrees) | |||||||||||||
| GFWDTRACE | Gradient waveform from SSA output (MV/m) | |||||||||||||
| PFWDTRACE | Phase waveform from SSA output (degrees) | |||||||||||||
| GREVTRACE | Reverse/reflected SSA output gradient waveform (MV/m) I'm favoring rev over ref because ref sounds to me like "reference" | |||||||||||||
| PREVTRACE | Reverse/reflected SSA output phase waveform (degrees) | *ERRTRACE | Error waveforms corresponding to waveforms above, captured and put in a separate buffer when a fault is detected (degrees or MV/m) | |||||||||||
| Any of the above in I/Q equivalent of Amplitude/Phase | ||||||||||||||
| PwrFwd | Forward power from SSA to cavity | |||||||||||||
| PwrRev | Reflected/reverse power from cavity | |||||||||||||
| PzWF | Waveforms from tuner piezo motors, useful for finding microphonics. Units TBD. | |||||||||||||
| ALEM | LEM computed integrated RF amplitude (MV) per cavity and per cryomodule | |||||||||||||
| PLEM | LEM computed phase (deg) | |||||||||||||
| EGLEM | LEM computed energy gain (MeV) | |||||||||||||
| CHLEM | LEM computed chirp (MeV) | |||||||||||||
| Waveform Signals | ||||||||||||||
The PVs below will be provided for each waveform signal. Each cavity has the following waveform signals:
| ||||||||||||||
| Waveform | <SIG>:ATRACE | Signal amplitude waveform | ||||||||||||
Statistics | <SIG>:AMEAN | Mean of <SIG>:ATRACE | ||||||||||||
| <SIG>:ASTD | Standard deviation of <SIG>:ATRACE | |||||||||||||
| <SIG>:AMIN | Minimum of <SIG>:ATRACE | |||||||||||||
| <SIG>:AMAX | Maximum of <SIG>:ATRACE | |||||||||||||
| Waveform | <SIG>:PTRACE | Signal phase waveform | ||||||||||||
| Statistics | <SIG>:PMEAN | Mean of <SIG>:PTRACE | ||||||||||||
| <SIG>:PSTD | Standard deviation of <SIG>:PTRACE | |||||||||||||
| <SIG>:PMIN | Minimum of <SIG>:PTRACE | |||||||||||||
| <SIG>:PMAX | Maximum of <SIG>:PTRACE | |||||||||||||
| Waveform | <SIG>:PWRTRACE | Signal power waveform | ||||||||||||
| Statistics | <SIG>:PWRMEAN | Mean of <SIG>:PWRTRACE | ||||||||||||
| <SIG>:PWRSTD | Standard deviation of <SIG>:PWRTRACE | |||||||||||||
| <SIG>:PWRMIN | Minimum of <SIG>:PWRTRACE | |||||||||||||
| <SIG>:PWRMAX | Maximum of <SIG>:PWRTRACE | |||||||||||||
| Waveform | <SIG>:ITRACE | Signal I waveform | ||||||||||||
| Waveform | <SIG>:QTRACE | Signal Q waveform | ||||||||||||
| GTRACE_Q | Gradient waveform from the cavity probe, imaginary part | |||||||||||||
| GTRACE | Gradient waveform from the cavity probe, amplitude. (GTRACE above) | |||||||||||||
| PTRACE | Gradient waveform from the cavity probe, phase. (PTRACE above) | |||||||||||||
| GTRACE_MEAN | Or GMEAN? Mean of GTRACE (may be fed into GACT?) | |||||||||||||
| PTRACE_MEAN | Or PMEAN? Mean of PTRACE (may be fed into PACT?) | |||||||||||||
| GTRACE_STD | Or GSTD? Standard deviation of GTRACE | |||||||||||||
| PTRACE_STD | Or PSTD? Standard deviation of PTRACE | |||||||||||||
| GTRACE_MIN | Or GMIN? Minimum value of GTRACE | |||||||||||||
| PTRACE_MIN | Or PMIN? Minimum value of PTRACE | |||||||||||||
| GTRACE_MAX | Or GMAX? Maximum value of GTRACE | |||||||||||||
| PTRACE_MAX | Or PMAX? Maximum value of PTRACE | |||||||||||||
| FWD:ATRACE | ||||||||||||||
| FWD:PTRACE | Drive; waveform of RFS chassis drive loopback, imaginary part | |||||||||||||
| FWD:AMEAN | Drive; waveform of RFS chassis drive loopback, amplitude | |||||||||||||
| FWD:PMEAN | Drive; waveform of RFS chassis drive loopback, phase | |||||||||||||
| FWD:ASTD | Or DAMPLMEAN? Mean of DTRACE_AMPL | |||||||||||||
| DTRACE_PHAS_MEAN | Or DPHASMEAN? Mean of DTRACE_PHAS | |||||||||||||
| DTRACE_AMPL_STD | Or DAMPLSTD? Standard deviation of DTRACE_AMPL | |||||||||||||
| DTRACE_PHAS_STD | Or DPHASSTD? Standard deviation of DTRACE_PHAS | |||||||||||||
| DTRACE_AMPL_MIN | Or DAMPLMIN? Minimum value of DTRACE_AMPL | |||||||||||||
| DTRACE_PHAS_MIN | Or DPHASMIN? Minimum value of DTRACE_PHAS | |||||||||||||
| DTRACE_AMPL_MAX | Or DAMPLMAX? Maximum value of DTRACE_AMPL | |||||||||||||
| DTRACE_PHAS_MAX | Or DPHASMAX? Maximum value of DTRACE_PHAS | |||||||||||||
| FWDTRACE_I | ||||||||||||||
| REVTRACE_I | Or REFLTRACE_I | |||||||||||||
| Name | Description |
|---|---|
| GDES | Operation Gradient setpoint (MV/m) |
| GACT | Measured gradient from cavity probe (MV/m) |
| GMAX | Maximum allowable gradient (MV/m) |
| GCAL | Gradient calibration scale factor, nominally 1. Multiply by this when calculating raw register value to set, so increasing GCAL increases output. |
| ADES | Operation Amplitude setpoint (MV) |
| AACT | Measured amplitude from cavity probe (MV) |
| AMAX | Maximum allowable amplitude (MV) |
| ACAL | Amplitude calibration scale factor, nominally 1. Multiply by this when calculating raw register value to set, so increasing GCAL increases output. |
By default, these should be write-protected during operation
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