1. FPGA-Workshop FPGA-based Tomographycameras 3.12.12/ Jülich Jörg Burmester, Jörn Plewka, Stephan Meyer-Loges HZG/TKE

2. 2 FPGA-based Tomographycameras Tomography-Camera Setup setup tripod rotationsaxis probe optics 2 cameras movable mirror

3. 3 FPGA-based Tomographycameras Some data: E2V CCD42-40 Ceramic AIMO Back Illuminated Compact Package High Performance CCD Sensor FEATURES 2048 by 2048 pixel format 13.5 µm² pixels Image area 27.6 x 27.6 mm Back Illuminated Full-frame operation Very low noise output amplifiers 100% active area

4. 4 FPGA-based Tomographycameras high dynamic range 2 * 2 18 Bit A/D-converter framerate <2 fps integrated cooling system free programmable line-binning and -dumping Implementation of various algorithms for analysis free programmable timing and voltages different CCD-sensor adaptable HZG - high dynamic range camera

5. 5 FPGA-based Tomographycameras E2V CCD42-40 adapter Chip cooling area Peltier elements CCD-Sensor adaption PCB thermal isolation watercooled heatsink (Cu) case gas atmosphere Camera head

6. 6 FPGA-based Tomographycameras Trenz-Elektronik GigaBee board Spartan6-150 1 GBit Ethernet UDP power management ADC-channels MOS switches OP-amps peltier control unit board supervisory CCD - controller board

7. 7 FPGA-based Tomographycameras System requirements different CCD-Sensors should be adaptable flexible CCD-Control a.) Timing b.) ROI c.) Summing d.) voltage level control high dynamic range => no noise !!!!!!!!!!!!!!!!!!!!! expensive sensors a.) advanced protection b.) supervisory and monitoring cooling system

8. 8 FPGA-based Tomographycameras System concept main 32bit CPU MicroBlaze (switchable clock) APU - small, quick, quiet, flexible (CCD-Timing generator) sequencer – just quick (Digitizing) streaming and control via 1GBit Ethernet UDP (without CPU) in cooperation with HZDR analog integration method for calm signals at the ADC DA-converter controlled bias voltages fast drive and high current drive capability on CCD lines very special power supplies for the analog circuitry

9. 9 FPGA-based Tomographycameras First picture

10. 10 FPGA-based Tomographycameras Cooperation with the KIT for phase-contrast tomography setups

11. 11 FPGA-based Tomographycameras High speed camera developed by the KIT Adaption and integration of the KIT camera Expansion with piezo-motor- control for phase-contrast setups and more..

12. 12 FPGA-based Tomographycameras Piezo drive system Equipped with a capacitive measurement system that should be that precise It is not so easy to measure 1nm! Move 10 nanometers! Stop Take a picture … Renishaw linear absolute encoder ~ 1nm precision !?

13. 13 FPGA-based Tomographiecameras Also a confocal measurement setup from µ-epsilon was tested with poor results 24h measurement position versus time and temperature in an isolated box

14. 14 FPGA-based Tomographycameras No vibrations at the camera allowed! It‘s a try Without temperature stability all things become dynamic Cooling system

15. 15 FPGA-based Tomographycameras Ulbricht light source mechanical aperture electronic shutter KIT camera temperature control Characterization setup noise versus temperature dynamic range linearity pattern noise saturation huge amount of pictures with various parameters have been taken Lots of data has to be reviewed and analysed

16. 16 FPGA-based Tomographycameras a camera with high dynamic range has been developed characterization has to be finished high-speed KIT camera has been integrated data-analysis is in progress phase contrast setup is in development code from KIT and HZG has to be merged into the FPGA signatures on contract are still missing Thank you for your attention! Summary