Pneumatic Retractable Arm

The pneumatic retractable positioning system is designed to implement our Advanced STEM detector modules into a TEM. It provides the mechanical, thermal, and electrical interfaces to place and operate the Advances STEM detector modules in a TEM environment. To rule out any influence of an electric drive, the arm utilizes a pneumatic cylinder to insert and extract the detector. Both positions can be checked by end switches, to monitor the movement of the detector. The materials and layout of the whole assembly are chosen for full high vacuum compatibility and full radiation tight operation in inserted or extracted position. The mechanical interface to the TEM column is chosen to either fit directly on some TEM columns on the market or - with an additional radiation tight adapter flange - the system can be mounted to various flange configurations.