Fast Piezo X-Ray Shutters FPS 200M & FPS 400M - CEDRAT TECHNOLOGIES - #1

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Fast Piezo X-Ray Shutters FPS 200M & FPS 400M The precise exposure of samples to X-ray beam is needed for reliable data acquisition. With modern synchrotron sources, the exposure times get shorter and the coordination between spindle movement and shutter opening needs to be accurate in order to get reproducible exposed images. Objective Developed in collaboration with Mr Florent Cipriani from EMBL, the fast piezoelectric X-ray shutter FPS 200M (Fig.1a) is made of two Amplified Piezo Actuators (APA 200M) facing each other with a special optical head*(fig 1.b). Similarly, the FPS 400M is constituted by two APA 400M. They are mounted on a solid stage to cut a laser or a X-Ray beam. When voltage is applied the two APA’s contract and the shutter opens. The aperture size (fig. 2) is 0.3 x 5 mm (FPS 200M) and 0.7 x 5 mm (FPS 400M). * made of stainless steel Under request, the optical head can be made of tungsten (W) teeth for higher energy beam stopping. This normally close shutter is driven by a standard electronic board SP 75A- 2 (Fig.3) from CEDRAT TECHNOLOGIES. The SP 75A delivers a TTL signal: -20 or 150V. Performances Typical performances are given in the following table. The table 1 is not exhaustive as many other Fast Piezo X-ray Shutter can be designed by CEDRAT TECHNOLOGIES starting with other standard amplified piezo actuators. Figure 1a: FPS 200M. Table 1: Characteristics of the Fast Piezo Shutter. Figure1b: FPS 200M side view. Figure 2: Dimensional view of aperture. References Unit FPS200M FPS400M Item Code V-FPSM200 V-FPSM400 Notes - - Sensors option SG SG Active axis TX TX Max. No-load displacement (Tx) ìm 400 800 Max. beam diameter mm 0,3 0,7 Voltage range V -20 … 150 -20 … 150 Stiffness N/ìm 3,17 0,10 Heigth (Z axis) mm 21,0 21,0 Dimensions (X & Y axis) mm 60 * 44 60 * 44 Mass g 300 300 Unloaded resonance frequency (in the actuation’s direction) Hz 900 495 Response time ms 0,56 1,01 Capacitance (per electrical port) ìF 3,15 3,15 Mechanical interfaces (payload) 4 slits (width 0.6 mm) 4 slits (width 0.6 mm) Mechanical interfaces (frame) 4 holes Ø 3mm on [] 24*38 mm 4 holes Ø 3mm on [] 24*38 mm Electrical interfaces 2 RG178B/U coaxial cables 2 RG178B/U coaxial cables Figure 3: SP 75A ON/OFF Amplifier.