System Options: Optional Detectors
7-9
C O N F I D E N T I A L
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User Manual
Revision A
Feb 2018
Retractable Annular Scanning Transmission Electron Microscopy Detector
(STEM 3 / STEM 3+)
This is a solid-state diode mounted on a retractable arm. The
STEM 3 detector uses a central circle, one concentric ring and
6 angular segments of the detector diode while the STEM 3+
detector uses the central circle and 5 concentric rings.
Inserting and Retracting STEM 3 / 3+ Detector
C a u t i o n !
Always take care of any stage movement that can cause a collision
with the STEM 3 / 3+ detector. Any collision can cause damage to
the detector!
Note
When the STEM 3 / 3+ detector is inserted, stage rotation and tilt are locked automatically for safety.
Before insertion of the retractable STEM 3 / 3+ detector, the chamber must be pumped, otherwise the
Insert
button is not accessible (a tooltip occurs under the mouse cursor).
When clicking on the
Insert
button, the dialog requires determination of the correct
sample holder configuration
to
enable safe detector insertion. When the stage is not in the correct position for insertion, another dialog appears
requiring confirmation of moving it to the safe position.
The Tilt and the Z-axis stage movements are limited to enable safe stage movements.
Retraction of the STEM 3 / 3+ is automatic when Stopping /
Starting the server or venting the chamber. Otherwise a user can
use the
Retract
button. When the detector is retracted, this
information text is shown in each display that uses it.
