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In this note epix10ka2m is the specific example, but the conventions adopted would apply to any future multi-panel detector.
Detector name labels
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Why it is important? We need to distinguish detectors in optical metrology and geometry constant files. It does not matter for intensity correction, where detector will be identified by the panels Id from data.
Optical metrology
epix10ka2m
Use the same measurement pattern for all epix10ka2m detectors
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- orientation of camera should be consistent with its beam-view in hatchhutch, quad Q0 in the top left corner.
- orientation of quad labels should be human readable (from left to right) in hatch hutch position;
on current photo labels need to be rotated upside-down. Right photo shows how embarrassing labels look in the hatchhutch. - add labels for vector of gravity or x-y for optical metrology in order to exclude wrong orientation
- microscope origin should stay the same during the measurements.
Origin location does not matter, but it can optionally be labeled somewhere for uniformity of metrology data.
- orientation of quad labels should be human readable (from left to right) in hatch hutch position;
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Code Block | ||||
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quad 0 point X Y Z 1 0 0 0 2 403 39683 -147 3 37088 39308 -472 4 36680 -378 -326 5 322 40433 -141 6 366 80129 -302 7 37056 80079 -657 8 37007 40391 -452 9 42053 40578 -470 10 42046 80274 -669 11 78743 80269 -961 12 78733 40576 -725 13 42083 219 -297 14 42078 39472 -413 15 78774 39473 -711 16 78767 214 -640 quad 1 point X Y Z 1 81539 -4620 -731 2 81352 32062 -814 3 121034 32267 -1079 4 121225 -4420 -1015 5 81390 37579 -882 6 81497 74238 -993 7 121177 74148 -1219 8 121073 37468 -1127 9 122083 37596 -1104 10 122171 74281 -1329 11 161853 74189 -1620 12 161768 37499 -1433 13 122081 -4398 -916 14 122183 32283 -988 15 161877 32161 -1333 16 161765 -4520 -1286 Quad 2 ... Quad 3 ... |
MEC Quad Orientation
< Insert documentation on MEC Quad Orientation here >
Label on connectors and cables
- All labels on detector connectors and cables should show THE ONLY WAY to connect camera in hatchhutch.
Detector name in DAQ
- Latest incident revealed by Philip on 2020-07-16 - "We've been mostly using the 2M.1 camera but the daq calls it 2M.0."
- Detector name like DetLab.0:Epix10ka2M.0 is used to access data in xtc file.
- it should be consistent with calibration constants, like/reg/d/psdm/det/detdaq18/calib/Epix10ka2M::CalibV1/DetLab.0:Epix10ka2M.0/pedestals/<run-range>.data
- To prevent mess with names it would be nice to use the same detector name on camera body (2M.0) and in DAQ (DetLab.0:Epix10ka2M.0).
Summary
- Engrave detector name on camera body.
- Add labels for unambiguous detector orientation:
- vector of gravity,
- x-y (and optional origin) for optical metrology,
- all labels should be left-to-right readable in the hatch hutch (now for 2M.0 they are upside-down).
- Use the same detector orientation in optical metrology, Q0 is in upper left corner in the hatch and hutch and in microscope x-y Cartesian frame.
- Origin location does not matter, but it is better to label for uniformity of constants.
- Use the same order of measuring points per quad, as numerated on photo.
- Plug-in properly labeled cables to the properly labeled camera connectors.
- Use the same detector name on camera body (2M.0) and in DAQ (DetLab.0:Epix10ka2M.0).
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