| AVS 56th International Symposium & Exhibition | |
| Vacuum Technology | Tuesday Sessions |
| Session VT-TuP |
| Session: | Vacuum Technology Posters and Student-Built Vacuum Systems Poster Competition |
| Presenter: | L. Tröger, University of Osnabrück, Germany |
| Authors: | L. Tröger, University of Osnabrück, Germany M. Reichling, University of Osnabrück, Germany |
| Correspondent: | Click to Email |
We present a complete ultra-high vacuum system designated for the operation of a home built dynamic scanning force microscope for use at cryogenic temperatures. The vacuum system was designed for maximum flexibility and consists of a measurement chamber with the cryostat and two separate chambers for sample transfer and preparation.
The cryostat was modified to implement leverage for the scan head for optimum thermal coupling and vibration decoupling by eddy current damping. Thermal anchors for all electrical supply lines were installed. An in vacuo reservoir for the glass fibre for the interferometric detection system of the force microscope ensures protection from vibrations and stores spare fibre for repair. The measurement chamber was designed for best handling and optimised use of space under several technical constraints. Due to the attached cryostat functioning as cryo-pump the chamber reaches lowest pressure regimes providing best conditions not only during experiments but also for storing force microscopy tips and samples in a magazine. The preparation chamber is based on several planes with distinct focus points for preparation instruments along the main axis. The load lock is conceived for maximum exchange efficiency enabling the transfer of up to eight tips or sample at a time. This is achieved by taking advantage of the rotational degree of freedom of the transfer rod that carries a revolving magazine.