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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) | ||
| PMAX? | Could be included, staying parallel to GMAX, but is this useful? | ||
| PCON | See GCON above | ||
| FDES | Cavity detuning setpoint (Hz) | ||
| FACT | Detune seen by the resonance system (Hz) | FCON | See GCON above |
| 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 | Gact[TBD] | Amplitude waveform from the cavity probe, which is used to calculate GACT (MV/m) |
| PactWFPTRACE | Phase waveform from the cavity probe, which is used to calculate PACT (degrees) | ||
| GfwdWFGFWDTRACE | Amplitude Gradient waveform from SSA output (MV/m) | ||
| PfwdWFPFWDTRACE | Phase waveform from SSA output (degrees) | ||
| GrevWFGREVTRACE | Reverse/reflected SSA output amplitude gradient waveform (MV/m) I'm favoring rev over ref because ref sounds to me like "reference" | ||
| PrevWFPREVTRACE | Reverse/reflected SSA output phase waveform (degrees) | ||
| *ErrWFERRTRACE | 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) |
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