Scanning probe detector channel descriptions

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Some common definitions of 26ID scan detector channels

Detector Channel number	EPICS Process variable	Description
D01	26idsclr1:scaler1.S1	I0 - Integrated Ion chamber current after NES slits (amplification changed by yellow SR570 tab on main beamline screen)
D02	26idcXMAP:mca5.R1	Bi - Fluorescence channel from outboard detector, summed ROI#1 - find and modify with MCA software from User Tools tab on main beamline screen
D03	26idcXMAP:mca5.R2	Ti - Fluorescence channel from outboard detector, summed ROI#2 - find and modify with MCA software from User Tools tab on main beamline screen
D04	26idcXMAP:mca5.R5	Fe - Fluorescence channel from outboard detector, summed ROI#5 - find and modify with MCA software from User Tools tab on main beamline screen
D05	26id:ccd.R01.Average	Integrated Intensity/Num Pixels for CCD ROI#1 - ROI#1 defines the total active chip area to be saved, so this is the total CCD intensity per pixel
D06	26id:ccd.R02.Average	Integrated Intensity/Num Pixels for CCD ROI#2 - usually tightly defined around the outgoing beam - Contrast here is related to diffracting volume
D07	26id:ccd.R02.XCentroid	X center of mass of intensity in CCD ROI#2 - This is related to lattice strain and rotation in the diffraction plane, scales away from center of ROI2 with signal/dark current
D08	26id:ccd.R02.YCentroid	Y center of mass of intensity in CCD ROI#2 - This is related to lattice rotation out of the diffraction plane, scales away from center of ROI2 with signal/dark current
D09	26idcDET:userCalc3.VAL	R02.Average - R03.Average, Background subtracted average intensity - ROI#3 typically set around an unused area, this is useful for viewing scans in progress with low contrast
D10	26idcDET:userCalc6.VAL	CCD Image number - If you are using the CCD DO NOT MODIFY THIS CHANNEL - Necessary for Matlab analysis routines