Beam Calibration

beam calibration is only appropriate for speeds slower than 16 us on some system requires amics 5 1 0 or newer the released version of amics is {{version}} and can be found at docid\ se8jyhxszdqfpit7s1ja0 with instruction on the docid\ e1faehd1k20uedqhptzlx page manuals for previous versions of the software can be found at the docid\ d2biwe sybowhhdww0anz page is a calibration needed? to test if beam calibration is required, run a matrix mapping measurement on a single frame containing mineral grain boundary using the following conditions number of frames 1 quality all required scan speeds size 256 x 192 x ray spacing 1um x ray counts 2200 working distance recommended distance for the model of sem image resolution 1um/pixel look for misalignments of the x ray points with the bse image this is best observed along mineral grain boundaries for example, when an x ray spectrum near a grain boundary is the spectrum of the adjacent mineral and not than of the actual image observed in the bse image calibrating the beam 1\) investigator go to default/tools ribbon and click on "calibrate beam"; or using tool in the main ribbon click on "beam calib" 2\) in the sem gui, find an area with lots of features (particles and contrasting average atomic number minerals), focus and set magnification 3\) in the beam calibration subwindow, click on the "calibrate" button and select the scan speeds which require calibration not all scan speeds require beam calibration 4\) amics will now auto run beam calibration routine on the selected scan speeds now press save 5\) to apply beam calibration offset, ensure the "correct beam position" is ticked