Status of the GRANIT Facility

Figure 17

The optical elements on the granit table. The extraction mirrors assembly and the transport mirror are placed on two separate adjustable supports. Their adjustment could be done with micrometric screws. To adjust the height and the orientation of the surface of the transport mirror with a great accuracy, we use 3 piezo-electric elements. The distance between the absorber and the transport mirror is adjustable as well using 3 piezo-electric elements. The piezos are driven from the control computer with a Labview application.