Scanning probe detector channel descriptions: Difference between revisions
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| 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 | | 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 - | | 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 | ||
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| 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 | |||
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| D10 ||26idcDET:userCalc6.VAL ||CCD Image number - DO NOT MODIFY THIS CHANNEL - Necessary for Matlab analysis routines | |||
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Revision as of 15:49, September 10, 2010
Back to Scanning Probe Diffraction Quick Reference
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 - DO NOT MODIFY THIS CHANNEL - Necessary for Matlab analysis routines
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