PV Name | Purpose | EGU | Limits |
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KLYS_LLRF:IN20:RH:LOB_PDES | Desired Phase used by LOB local feedback, users, apps other than beam-based feedback - may be used as readback by LEM | degrees; full range, not delta |
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KLYS_LLRF:IN20:RH:LOB_P | Desired Phase for Beam-based feedback only | degrees; full range | none provided- to be calculated by beam-based feedback |
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KLYS_LLRF:IN20:RH:L0B_PAVG | actual phase readback (avg of multiple channels): used by beam-based feedback, slc-aware readback arrys, | degrees; full range | none provided |
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KLYS_LLRF:IN20:RH:L0B_ADES | Desired Amplitude used by LOB local feedback, users, apps other than beam-based feedback - may be used as readback by LEM | volts MeV;full range | HOPR, LOPR |
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KLYS_LLRF:IN20:RH:L0B_A | Desired amplitude for beam-based feedback only | volts MeV;full range | HOPR, LOPR |
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KLYS_LLRF:IN20:RH:L0B_AAVG | actual amplitude readback (avg of multiple channels): used by beam-based feedback, slc-aware readback arrys, | volts MeV; full range | HOPR, LOPR |
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KLYS_LLRF:IN20:RH:G_L0_FB_CTL | When this PV is ON, beam-based feedback locks out users and other applications from setting L0B_A/P, or L0B_ADES/PDES, and the local feedback is turned off. Beam-based feedback is responsible for setting this PV ON when starting, setting it OFF when stopping. |
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- These PV names and usages are a template for L1S and the BC1 energy beam-based feedback
- TBD: the _A, _ADES, _AAVG will be volts ( MeV??)
RESOLVED:
- The local feedback loops will remain on during beam-based feedback and other user / application inputs
- The Beam-based feedback takes precidence over other applications and user inputs. when Beam-based feedback is on, lother inputs are disabled
- the L0B_A, L0B_P PVs will be an absolute value, not a delta.
- Both amplitude and phase will be available as an actuator for the Beam-based feedback for DL1. Only one of these will be used at a time
UNRESOLVED:
- TBD: the _A, _ADES, _AAVG will be volts (MeV??)