Bunch Phase

Bunch Phase

Measurement of bunch phase for LMBF mode.  This shows the magnitude and phase of each bunch using the dual ADC inputs I and Q.  This is only available in LMBF mode.

All PVs described here are prefixed with $(device):$(axis01), where $(axis01) is normally IQ.

TitlePVDescription
Bunch Magnitude:ADC:MAGNITUDEMagnitude of signal from each bunch, computed as the magnitude of the I and Q ADC signals.
Bunch Phase:ADC:PHASEFor bunches with relative magnitude greater than the threshold, shows the bunch phase (relative to Q = 0°), for smaller bunches shows 0.
Mean magnitude:ADC:MAGNITUDE_MEANOverall average of the bunch magnitudes.
Mean phase:ADC:PHASE_MEANPhase of the bunch ensemble for bunches with relative magnitude greater than threshold.
Threshold:ADC:THRESHOLDAbsolute magnitude threshold, the phases of bunches lower than this magnitude are ignored.  Used to detect filled bunches.