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| R/W | Name | Description | SRF Example (CM 2 Cavity 1) | Gun/Buncher Example | |||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| R/W | RFMODECTRL | RF mode control (SEL, SELA, SELAP, SEL Raw, Pulse, Chirp) | ACCL:L1B:0210:RFMODECTRL | N/A | |||||||||||||||||||||||||||||||||||
| R | RFMODE | Readback of current RF mode (SEL, SELA, SELAP, SEL Raw, Pulse, Chirp) | ACCL:L1B:0210:RFMODE | ||||||||||||||||||||||||||||||||||||
| R/W | RFCTRL | Cavity on/off control. Off = LLRF drive set to 0. (SSA control will be different.) | ACCL:L1B:0210:RFCTRL | ||||||||||||||||||||||||||||||||||||
| R | RFSTATE | Readback of cavity RF on/off state | ACCL:L1B:0210:RFSTATE | N/A | |||||||||||||||||||||||||||||||||||
| R | RFREADYFORBEAM | Indicates cavity is in an okay state for beam operation. Possible states: Ready (numerical 1) = cavity RF is On and mode is SELAP Not ready (numerical 0) = Ready criteria not met | ACCL:L1B:0210:RFREADYFORBEAM | ||||||||||||||||||||||||||||||||||||
| R/W | ADES | Operation amplitude setpoint (MV) (For SRF, this setting is used in SEL, SELA, SELAP modes.) | ACCL:L1B:0210:ADES | ||||||||||||||||||||||||||||||||||||
| R | GDES | Gradient setpoint (MV/m) - readback only | ACCL:L1B:0210:GDES | N/A | |||||||||||||||||||||||||||||||||||
| R | SEL_ASET | SRF amplitude setpoint in SEL Raw, Pulse, Chirp modes. Is in units of % of full drive scale. | ACCL:L1B:0210:AACT | N/A | |||||||||||||||||||||||||||||||||||
| R | GACT | Measured gradient from cavity probe (MV/m) | ACCL:L1B:0210:GACT | ||||||||||||||||||||||||||||||||||||
| R/W | GACT | Measured gradient from cavity probe (MV/m) | ACCL:L1B:0210:GACT | ||||||||||||||||||||||||||||||||||||
| R/W | AMAX | Maximum allowable amplitude (MV) - experts only | ACCL:L1B:0210:AMAX | ||||||||||||||||||||||||||||||||||||
| R | GMAX | Maximum allowable gradient (MV/m) - readback only | ACCL:L1B:0210:GMAX | ||||||||||||||||||||||||||||||||||||
| R/W | PDES | Operation phase setpoint (degrees, where 0 is on-crest) | ACCL:L1B:0210:PDES | ||||||||||||||||||||||||||||||||||||
| R | PACT | Measured phase from cavity probe (degrees) | ACCL:L1B:0210:PACT | ||||||||||||||||||||||||||||||||||||
| R/W | 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 (degrees) | ACCL:L1B:0210:PREF | ||||||||||||||||||||||||||||||||||||
| R/W | SEL_POFF | SEL phase offset setpoint (not used in SELA/GDR mode) | ACCL:L1B:0210:SEL_POFF | N/A | |||||||||||||||||||||||||||||||||||
| R | SEL_POFF_RBV | SEL phase offset (not used in SELA/GDR mode) | ACCL:L1B:0210:SEL_POFF_RBV | N/A | |||||||||||||||||||||||||||||||||||
| R | DFACT | Measured etune frequency (Hz) | N/A | ||||||||||||||||||||||||||||||||||||
| R | DF | Measured detune frequency (Hz) using state space equation, cavity and forward signals - used to drive piezos | ACCL:L1B:0210:DF | N/A | |||||||||||||||||||||||||||||||||||
| R | DFVALID | Measured detune frequency (Hz) using state space equation, cavity and forward signals is valid. If it is not valid, its value cannot be used and the resonance system will not automatically change the piezo setting. In order for it to be valid, there must be sufficient cavity signal and it must be within +/- a couple hundred Hz. | ACCL:L1B:0210:DFVALID | N/A | |||||||||||||||||||||||||||||||||||
| R | DF_FC | Measured detune frequency (Hz) using frequency counter method - not used in resonance control, larger operating range than DF | ACCL:L1B:0210:DF_FC | N/A | |||||||||||||||||||||||||||||||||||
| R | CHIRP:DF | Measured detune frequency (Hz) using chirp method - only active in Chirp and Pulsed modes, primarily for use when cavity is many kHz out of tune, operating range of tens of kHz or more | ACCL:L1B:0210:CHIRP:DF | N/A | |||||||||||||||||||||||||||||||||||
| R/W | ALEM | LEM computed integrated RF amplitude (MV) per cavity and per cryomodule | ACCL:L1B:0210:ALEM | ||||||||||||||||||||||||||||||||||||
| R/W | PLEM | LEM computed phase (deg) | ACCL:L1B:0210:PLEM | ||||||||||||||||||||||||||||||||||||
| R/W | EGLEM | LEM computed energy gain (MeV) | ACCL:L1B:0210:EGLEM | ||||||||||||||||||||||||||||||||||||
| R/W | CHLEM | LEM computed chirp (MeV) | ACCL:L1B:0210:CHLEM | ||||||||||||||||||||||||||||||||||||
| R/W | CAV:FUDG | Beam-based scale factor applied to cavity probe amplitude readback. Nominal value of 1. | ACCL:L1B:0210:CAV:FUDG | ||||||||||||||||||||||||||||||||||||
| R | L | Cavity design length - constant | ACCL:L1B:0210:L | N/A | |||||||||||||||||||||||||||||||||||
| R | FREQ | Cavity design frequency - constant | ACCL:L1B:0210:FREQ | N/A | |||||||||||||||||||||||||||||||||||
| R | IMPED | Cavity design shunt impedance - constant | ACCL:L1B:0210:IMPED | N/A | |||||||||||||||||||||||||||||||||||
| Tentative | |||||||||||||||||||||||||||||||||||||||
STAT | Status bits in software (define the bits) | ||||||||||||||||||||||||||||||||||||||
| HSTA | Hardware status | ||||||||||||||||||||||||||||||||||||||
| SRF Interlocks - Per Cavity | |||||||||||||||||||||||||||||||||||||||
| W | INTLK_RESET_ALL | Reset all latched faults from RFS and Resonance/Interlock chassis | ACCL:L1B:0210:INTLK_RESET_ALL | ||||||||||||||||||||||||||||||||||||
| R | RFS:INTLK_FIRST | Bit mask indicating which interlock fault was first detected by RFS. | ACCL:L1B:0210:RFS:INTLK_FIRST | N/A | |||||||||||||||||||||||||||||||||||
| R | RFS:FLTINTLK_FIRST | For last captured fault waveform, bit mask indicating which interlock fault was first detected by RFS | ACCL:L1B:0210:RFS:FLTINTLK_FIRST | N/A | |||||||||||||||||||||||||||||||||||
| R | QUENCH_FLT | Cavity quench fault, from RFS chassis. Current status, latched status, bypass command, bypass status | ACCL:L1B:0210:QUENCH_FLT | ||||||||||||||||||||||||||||||||||||
| R | QUENCH_LTCH | ACCL:L1B:0210:QUENCH_LTCH | |||||||||||||||||||||||||||||||||||||
| W | QUENCH_BYP | ACCL:L1B:0210:QUENCH_BYP | |||||||||||||||||||||||||||||||||||||
| R | QUENCH_BYP_RBV | ACCL:L1B:0210:QUENCH_BYP_RBV | |||||||||||||||||||||||||||||||||||||
| R | STEPTEMP_FLT |
Stepper temperature fault, from Interlock chassis. Current status, latched status, bypass command, bypass status | ACCL:L1B:0210:STEPTEMP_FLT | ||||||||||||||||||||||||||||||||||||
| R | STEPTEMP_LTCH | ACCL:L1B:0210:STEPTEMP_LTCH | |||||||||||||||||||||||||||||||||||||
| W | STEPTEMP_BYP | ACCL:L1B:0210:STEPTEMP_BYP | |||||||||||||||||||||||||||||||||||||
| R | STEPTEMP_BYP_RBV | ACCL:L1B:0210:STEPTEMP_BYP_RBV | |||||||||||||||||||||||||||||||||||||
| R | CPLRTEMP1_FLT | Coupler temperature 1 fault, from Interlock chassis. Current status, latched status, bypass command, bypass status | ACCL:L1B:0210:CPLRTEMP1_FLT | ||||||||||||||||||||||||||||||||||||
| R | CPLRTEMP1_LTCH | ACCL:L1B:0210:CPLRTEMP1_LTCH | |||||||||||||||||||||||||||||||||||||
| W | CPLRTEMP1_BYP | ACCL:L1B:0210:CPLRTEMP1_BYP | |||||||||||||||||||||||||||||||||||||
| R | CPLRTEMP1_BYP_RBV | ACCL:L1B:0210:CPLRTEMP1_BYP_RBV | |||||||||||||||||||||||||||||||||||||
| R | CPLRTEMP2_FLT | Coupler temperature 2 fault, from Interlock chassis. Current status, latched status, bypass command, bypass status | ACCL:L1B:0210:CPLRTEMP2_FLT | ||||||||||||||||||||||||||||||||||||
| R | CPLRTEMP2_LTCH | ACCL:L1B:0210:CPLRTEMP2_LTCH | |||||||||||||||||||||||||||||||||||||
| W | CPLRTEMP2_BYP | ACCL:L1B:0210:CPLRTEMP2_BYP | |||||||||||||||||||||||||||||||||||||
| R | CPLRTEMP2_BYP_RBV | ACCL:L1B:0210:CPLRTEMP2_BYP_RBV | |||||||||||||||||||||||||||||||||||||
| R | PLL_FLT | FPGA PLL lock fault, from RFS chassis. Current status, latched status. Cannot be bypassed. | ACCL:L1B:0210:PLL_FLT | ||||||||||||||||||||||||||||||||||||
| R | PLL_LTCH | ACCL:L1B:0210:PLL_LTCH | |||||||||||||||||||||||||||||||||||||
| R | IOCWDOG_FLT | EPICS IOC watchdog fault, from RFS chassis. Current status, latched status, bypass command, bypass status | ACCL:L1B:0210:IOCWDOG_FLT | ||||||||||||||||||||||||||||||||||||
| R | IOCWDOG_LTCH | ACCL:L1B:0210:IOCWDOG_FLT | |||||||||||||||||||||||||||||||||||||
| W | IOCWDOG_BYP | ACCL:L1B:0210:IOCWDOG_BYP | |||||||||||||||||||||||||||||||||||||
| R | IOCWDOG_BYP_RBV | ACCL:L1B:0210:IOCWDOG_BYP_RBV | |||||||||||||||||||||||||||||||||||||
| R | SSA_FLT | SSA permit fault, from RFS chassis. Current status, latched status, bypass command, bypass status | ACCL:L1B:0210:SSA_FLT | ||||||||||||||||||||||||||||||||||||
| R | SSA_LTCH | ACCL:L1B:0210:SSA_LTCH | |||||||||||||||||||||||||||||||||||||
| W | SSA_BYP | ACCL:L1B:0210:SSA_BYP | |||||||||||||||||||||||||||||||||||||
| R | SSA_BYP_RBV | ACCL:L1B:0210:SSA_BYP_RBV | |||||||||||||||||||||||||||||||||||||
| SRF Interlocks - Per Rack (A or B) | |||||||||||||||||||||||||||||||||||||||
| R | CPLRVAC[A,B]_FLT |
Coupler vacuum fault, from Interlock chassis. Current status, latched status, bypass command, bypass status | ACCL:L1B:0200:CPLRVACA_FLT | ||||||||||||||||||||||||||||||||||||
| R | CPLRVAC[A,B]_LTCH | ACCL:L1B:0200:CPLRVACA_LTCH | |||||||||||||||||||||||||||||||||||||
| W | CPLRVAC[A,B]_BYP | ACCL:L1B:0200:CPLRVACA_BYP | |||||||||||||||||||||||||||||||||||||
| R | CPLRVAC[A,B]_BYP_RBV | ACCL:L1B:0200:CPLRVACA_BYP_RBV | |||||||||||||||||||||||||||||||||||||
| R | BMLNVAC[A,B]_FLT | Beamline vacuum fault, from Interlock chassis. Current status, latched status, bypass command, bypass status | ACCL:L1B:0200:BMLNVACA_FLT | ||||||||||||||||||||||||||||||||||||
| R | BMLNVAC[A,B]_LTCH | ACCL:L1B:0200:BMLNVACA_LTCH | |||||||||||||||||||||||||||||||||||||
| W | BMLNVAC[A,B]_BYP | ACCL:L1B:0200:BMLNVACA_BYP | |||||||||||||||||||||||||||||||||||||
| R | BMLNVAC[A,B]_BYP_RBV | ACCL:L1B:0200:BMLNVACA_BYP_RBV | |||||||||||||||||||||||||||||||||||||
R | CRYOSUM[A,B]_FLT | Cryo summary fault, from local Cryo PLC. Current status, latched status, bypass command, bypass status | ACCL:L1B:0200:CRYOSUMA_FLT | ||||||||||||||||||||||||||||||||||||
| R | CRYOSUM[A,B]_LTCH | ACCL:L1B:0200:CRYOSUMA_LTCH | |||||||||||||||||||||||||||||||||||||
| W | CRYOSUM[A,B]_BYP | ACCL:L1B:0200:CRYOSUMA_BYP | |||||||||||||||||||||||||||||||||||||
| R | CRYOSUM[A,B]_BYP_RBV | ACCL:L1B:0200:CRYOSUMA_BYP_RBV | |||||||||||||||||||||||||||||||||||||
| SRF Interlocks - Per Cryomodule - Tentative | |||||||||||||||||||||||||||||||||||||||
| R | CRYOSUM_FLT | Cryo summary status from local Cryo PLC. Current status | ACCL:L1B:0200:CRYOSUM_FLT | ||||||||||||||||||||||||||||||||||||
| R | HELEVEL_FLT | Cryo Helium level status from local Cryo PLC. Current status | ACCL:L1B:0200:HELEVEL_FLT | ||||||||||||||||||||||||||||||||||||
| R | HEPRES_FLT | Cryo Helium pressure status from local Cryo PLC. Current status | ACCL:L1B:0200:HEPRES_FLT | ||||||||||||||||||||||||||||||||||||
| R | CRYOHEARTBEAT_FLT | Cryo PLC heartbeat fault. Generated by RF software when cryo data stops updating or updates too slowly | ACCL:L1B:0200:CRYOPLC_HEARTBEAT | ||||||||||||||||||||||||||||||||||||
| SRF Cavity Characterization and Expert Settings | |||||||||||||||||||||||||||||||||||||||
| R | QLOADED | Loaded Q | ACCL:L1B:0210:QLOADED | ||||||||||||||||||||||||||||||||||||
| R | LDCOEF | Lorentz detuning coefficient | ACCL:L1B:0210:LDCOEF | ||||||||||||||||||||||||||||||||||||
| R | BCOEFM | State space B coefficient magnitude | ACCL:L1B:0210:BCOEFM | ||||||||||||||||||||||||||||||||||||
| R | BCOEFP | State space B coefficient phase | ACCL:L1B:0210:BCOEFP | ||||||||||||||||||||||||||||||||||||
| R | SSA:SLOPE | SSA curve parameter - slope | ACCL:L1B:0210:SSA:SLOPE | ||||||||||||||||||||||||||||||||||||
| R | SSA:PED | SSA curve parameter - pedestal | ACCL:L1B:0210:SSA:PED | ||||||||||||||||||||||||||||||||||||
| R | SSA:MINX | SSA curve parameter - min x | ACCL:L1B:0210:SSA:MINX | ||||||||||||||||||||||||||||||||||||
| R | SSA:MAXR | Maximum drive to SSA, range 0 to 1. (Need better name.) | ACCL:L1B:0210:QLOADED | ||||||||||||||||||||||||||||||||||||
| Waveform Signals | |||||||||||||||||||||||||||||||||||||||
Each SRF cavity has the following waveform signals:
For SRF systems, these PVs are provided for CAV, FWD, REV, DAC (and DRV only during expert diagnostics/troubleshooting.) Example PVs are for CAV. | |||||||||||||||||||||||||||||||||||||||
| R | <SIG>:AWF | Signal amplitude waveform | ACCL:L1B:0210:CAV:AWF | ||||||||||||||||||||||||||||||||||||
| R | <SIG>:AMEAN | Mean of <SIG>:AWF | ACCL:L1B:0210:CAV:AMEAN | ||||||||||||||||||||||||||||||||||||
| R | <SIG>:ASTD | Standard deviation of <SIG>:AWF | ACCL:L1B:0210:CAV:ASTD | ||||||||||||||||||||||||||||||||||||
| R | <SIG>:ARSTD | Standard deviation of <SIG>:AWF divided by mean of <SIG>:AWF | ACCL:L1B:0210:CAV:ARSTD | ||||||||||||||||||||||||||||||||||||
| R | <SIG>:AMIN | Minimum of <SIG>:AWF | ACCL:L1B:0210:CAV:AMIN | ||||||||||||||||||||||||||||||||||||
| R | <SIG>:AMAX | Maximum of <SIG>:AWF | ACCL:L1B:0210:CAV:AWF | ||||||||||||||||||||||||||||||||||||
| R | <SIG>:PWF | Signal phase waveform | ACCL:L1B:0210:CAV:PWF | ||||||||||||||||||||||||||||||||||||
| R | <SIG>:PMEAN | Mean of <SIG>:PWF | ACCL:L1B:0210:CAV:PMEAN | ||||||||||||||||||||||||||||||||||||
| R | <SIG>:PSTD | Standard deviation of <SIG>:PWF | ACCL:L1B:0210:CAV:PSTD | ||||||||||||||||||||||||||||||||||||
| R | <SIG>:PRSTD | Standard deviation of <SIG>:PWF divided by mean of <SIG>:PWF | ACCL:L1B:0210:CAV:PRSTD | ||||||||||||||||||||||||||||||||||||
| R | <SIG>:PMIN | Minimum of <SIG>:PWF | ACCL:L1B:0210:CAV:PMIN | ||||||||||||||||||||||||||||||||||||
| R | <SIG>:PMAX | Maximum of <SIG>:PWF | ACCL:L1B:0210:CAV:PMAX | ||||||||||||||||||||||||||||||||||||
| R | <SIG>:PWRWF | Signal power waveform | ACCL:L1B:0210:CAV:PWRWF | ||||||||||||||||||||||||||||||||||||
| R | <SIG>:PWRMEAN | Mean of <SIG>:PWRWF | ACCL:L1B:0210:CAV:PWRMEAN | ||||||||||||||||||||||||||||||||||||
| R | <SIG>:PWRSTD | Standard deviation of <SIG>:PWRWF | ACCL:L1B:0210:CAV:PWRSTD | ||||||||||||||||||||||||||||||||||||
| R | <SIG>:PWRRSTD | Standard deviation of <SIG>:PWRWF divided by mean of <SIG>:PWRWF | ACCL:L1B:0210:CAV:PWRRSTD | ||||||||||||||||||||||||||||||||||||
| R | <SIG>:PWRMIN | Minimum of <SIG>:PWRWF | ACCL:L1B:0210:CAV:PWRMIN | ||||||||||||||||||||||||||||||||||||
| R | <SIG>:PWRMAX | Maximum of <SIG>:PWRWF | ACCL:L1B:0210:CAV:PWRMAX | ||||||||||||||||||||||||||||||||||||
| R | <SIG>:IWF | Signal I waveform | ACCL:L1B:0210:CAV:IWF | ||||||||||||||||||||||||||||||||||||
| R | <SIG>:QWF | Signal Q waveform | ACCL:L1B:0210:CAV:AWF | ||||||||||||||||||||||||||||||||||||
| R | <SIG>:FLTAWF | Fault waveform - signal amplitude | ACCL:L1B:0210:CAV:FLTAWF | ||||||||||||||||||||||||||||||||||||
| R | <SIG>:FLTPWF | Fault waveform - signal phase | ACCL:L1B:0210:CAV:FLTPWF | ||||||||||||||||||||||||||||||||||||
| Other SRF Waveform Signals: | |||||||||||||||||||||||||||||||||||||||
| R | DF:WF | Detune frequency waveform. Calculated by software from cavity and forward signals. [Hz] | ACCL:L1B:0210:DF:WF | ||||||||||||||||||||||||||||||||||||
| R | DF:MEAN | Mean of DF:WF | ACCL:L1B:0210:DF:MEAN | ||||||||||||||||||||||||||||||||||||
| R | DF:STD | Standard deviation of DF:WF | ACCL:L1B:0210:DF:STD | ||||||||||||||||||||||||||||||||||||
| R | DF:MIN | Minimum of DF:WF | ACCL:L1B:0210:DF:MIN | ||||||||||||||||||||||||||||||||||||
| R | DF:MAX | Maximum of DF:WF | ACCL:L1B:0210:DF:MAX | ||||||||||||||||||||||||||||||||||||
| R | BW:WF | Cavity bandwidth waveform. Calculated by software from cavity and forward signals. [Hz] | ACCL:L1B:0210:BW:WF | ||||||||||||||||||||||||||||||||||||
| R | CTRL:IWF | P/I Controller Output I waveform. Calculated by software from cavity and DAC signals. [% of full scale, range -1 to 1] | ACCL:L1B:0210:CTRL:IWF | ||||||||||||||||||||||||||||||||||||
| R | CTRL:QWF | P/I Controller Output Q waveform. Calculated by software from cavity and DAC signals. [% of full scale, range -1 to 1] | ACCL:L1B:0210:CTRL:QWF | ||||||||||||||||||||||||||||||||||||
| R | CTRL:AWF | P/I Controller Output amplitude waveform. Calculated by software from cavity and DAC signals. [% of full scale, range -1 to 1] | ACCL:L1B:0210:CTRL:AWF | ||||||||||||||||||||||||||||||||||||
| R | CTRL:FLTAWF | Fault waveform - P/I Controller Output amplitude | ACCL:L1B:0210:CTRL:FLTAWF | ||||||||||||||||||||||||||||||||||||
| R | CTRL:FLTPWF | Fault waveform - P/I Controller Output phase | ACCL:L1B:0210:CTRL:FLTPWF | ||||||||||||||||||||||||||||||||||||
| R/W | ACQ_FLT_DELAY | Fault data trigger control. In % of total waveform data duration. 0% = all data is pre-fault, 100% = all data is post-fault | ACCL:L1B:0210:ACQ_FLT_DELAY | ||||||||||||||||||||||||||||||||||||
| Feedback | |||||||||||||||||||||||||||||||||||||||
| R | AMPFB_GAIN_P_RBV | Amplitude feedback proportional gain readback (units not yet determined) | ACCL:L1B:0210:AMPFB_GAIN_P_RBV | ||||||||||||||||||||||||||||||||||||
| R/W | AMPFB_GAIN_P | Amplitude feedback proportional gain setting (units not yet determined) | ACCL:L1B:0210:AMPFB_GAIN_P | ||||||||||||||||||||||||||||||||||||
| R | AMPFB_GAIN_I_RBV | Amplitude feedback integral gain readback (units not yet determined) | ACCL:L1B:0210:AMPFB_GAIN_I_RBV | ||||||||||||||||||||||||||||||||||||
| R/W | AMPFB_GAIN_I | Amplitude feedback integral gain setting (units not yet determined) | ACCL:L1B:0210:AMPFB_GAIN_I | ||||||||||||||||||||||||||||||||||||
| R | PHAFB_GAIN_P_RBV | Phase feedback proportional gain readback (units not yet determined) | ACCL:L1B:0210:AMPFB_GAIN_P_RBV | ||||||||||||||||||||||||||||||||||||
| R/W | PHAFB_GAIN_P | Phase feedback proportional gain setting (units not yet determined) | ACCL:L1B:0210:AMPFB_GAIN_P | ||||||||||||||||||||||||||||||||||||
| R | PHAFB_GAIN_I_RBV | Phase feedback integral gain readback (units not yet determined) | ACCL:L1B:0210:AMPFB_GAIN_I_RBV | ||||||||||||||||||||||||||||||||||||
| R/W | PHAFB_GAIN_I | Phase feedback integral gain setting (units not yet determined) | ACCL:L1B:0210:AMPFB_GAIN_I | ||||||||||||||||||||||||||||||||||||
| R | AMPFB_LSUM | Amplitude feedback is at lower limit while feedback is active. 0 if true (alarm state), 1 if false (good state) | ACCL:L1B:0210:AMPFB_LSUM | ||||||||||||||||||||||||||||||||||||
| R | AMPFB_HSUM | Amplitude feedback is at upper limit while feedback is active. 0 if true (alarm state), 1 if false (good state) | ACCL:L1B:0210:AMPFB_HSUM | ||||||||||||||||||||||||||||||||||||
| R | |||||||||||||||||||||||||||||||||||||||
| AMPFB_ |
| SUM | Amplitude feedback is at either lower or upper limit while feedback is active. 0 if true (alarm state), 1 if false (good state) | ACCL:L1B:0210:AMPFB_ |
| SUM | |
| R |
| PHAFB_LSUM | Phase feedback is at lower limit while feedback is active. 0 if true (alarm state), 1 if false (good state) | ACCL:L1B:0210:PHAFB_LSUM | |
| R |
| PHAFB_HSUM | Phase feedback is at upper limit while feedback is active. 0 if true (alarm state), 1 if false (good state) | ACCL:L1B:0210:PHAFB_HSUM | ||
| R | PHAFB_SUM | Phase feedback is at either lower or upper limit while feedback is active. 0 if true (alarm state), 1 if false (good state) | ACCL:L1B:0210:PHAFB_SUM |
| Name | DescriptionDescription | SRF Example (CM2 Cavity 1)SRF Example | Gun/Buncher Example | |
|---|---|---|---|---|
| R/W | STEP:NSTEPS | Stepper tuner number of steps per move | ACCL:L1B:0210:STEP:NSTEPS | |
| W | STEP:MOV_REQ_NEG | Request stepper tuner move negative STEP:NSTEPS. Write 1 to request | ACCL:L1B:0210:STEP:MOV_REQ_NEG | |
| W | STEP:MOV_REQ_POS | Request stepper tuner move positive STEP:NSTEPS. Write 1 to request | ACCL:L1B:0210:STEP:MOV_REQ_POS | |
| R | STEP:STATWRD | Stepper controller status word readback | ACCL:L1B:0210:STEP:STATWRD | |
| R | STEP:STATWRD.B0 | Stepper controller status bit: motor moving; 1 = moving, 0 = not | ACCL:L1B:0210:STEP:STATWRD.B0 | |
| R | STEP:STATWRD.B2 | Stepper controller status bit: motor done; 1 = done, 0 = not | ACCL:L1B:0210:STEP:STATWRD.B2 | |
| R | STEP:STATWRD.B3 | Stepper controller status bit: at limit B; 1 = at limit, 0 = not. (The limit should never be reached.) | ACCL:L1B:0210:STEP:STATWRD.B3 | |
| R | STEP:STATWRD.B4 | Stepper controller status bit: at limit A; 1 = at limit, 0 = not. (The limit should never be reached.) | ACCL:L1B:0210:STEP:STATWRD.B4 | |
| R | STEP:CTRLWRD | Stepper controller status word readback | ACCL:L1B:0210:STEP:CTRLWRD | |
| R | STEP:CTRLWRD.B5 | Stepper controller status bit: move direction; 1 if negative, 0 if positive | ACCL:L1B:0210:STEP:STATWRD.B0 | |
| R | STEP:STATMSG | High-level status message from stepper controller software | ACCL:L1B:0210:STEP:STATMSG | |
| W | PZT:ENABLE | Piezo enable/disable control; set to 1 to enable, 0 to disable | ACCL:L1B:0210:PZT:ENABLE | |
| R | PZT:ENABLESTAT | Piezo enable/disable status; 1 = enabled, 0 = disabled | ACCL:L1B:0210:PZT:ENABLESTAT | |
| W | PZT:MODECTRL | Piezo mode control; set to 1 for Integrator (feedback driven by RFS measured detune), 0 for DC control. Integrator is the correct mode for normal operations. | ACCL:L1B:0210:PZT:MODECTRL | |
| R | PZT:MODESTAT | Piezo mode status; 1 = Integrator, 0 = DC | ACCL:L1B:0210:PZT:MODESTAT | |
| R | PZT:V | Calculated piezo voltage | ACCL:L1B:0210:PZT:V | |
| R | PZT:DF_RFS | Detune measurement sent from RFS to Resonance chassis. This drives the piezo while in Integrator mode. | ACCL:L1B:0210:PZT:DF_RFS | |
| R | PZT:DFVALID_RFS | Detune measurement sent from RFS to Resonance chassis is valid. If it is not valid, the Integrator will not change the piezo setting | ACCL:L1B:0210:PZT:DFVALID_RFS | |
| R/W | PZT:DAC_SP | DC voltage offset setting. Only used while in DC mode. | ACCL:L1B:0210:PZT:DAC_SP | |
| R/W | PZT:INTEG_SP | Optional Integrator setpoint. Can be used to compensate for observed systematic detune offset while in Integrator mode. | ACCL:L1B:0210:PZT:INTEG_SP | |
| R | PZT:INTEG_SP_RBV | Readback of optional Integrator setpoint. | ACCL:L1B:0210:PZT:INTEG_SP_RBV | |
| R/W | PZT:BIAS | Piezo bias voltage setting. Nominally 25 V. Used to operate piezo away from range limits. This should not change during normal operations. | ACCL:L1B:0210:PZT:BIAS | |
| R | PZT:BIAS_RBV | Readback of piezo bias voltage setting. | ACCL:L1B:0210:PZT:BIAS_RBV | |
| R | PZT:INTEG_AT_LIM | Piezo integrator (feedback) is at a limit of its range. This may require moving the stepper to re-center the piezo. | ACCL:L1B:0210:PZT:INTEG_AT_LIM |
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