FPGAWorkshop FPGAbased Tomographycameras Jrg Burmester Jrn Plewka Stephan

FPGA-Workshop FPGA-based Tomographycameras Jörg Burmester, Jörn Plewka, Stephan Meyer-Loges HZG/TKE 3. 12/ Jülich

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

FPGA-based Tomographycameras Some data: E 2 V CCD 42 -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 3

FPGA-based Tomographycameras HZG - high dynamic range camera 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 4

FPGA-based Tomographycameras Camera head case CCD-Sensor adaption PCB thermal isolation gas atmosphere E 2 V CCD 42 -40 Chip cooling area adapter Peltier elements watercooled heatsink (Cu) 5

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

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 7

FPGA-based Tomographycameras System concept main 32 bit CPU Micro. Blaze (switchable clock) APU - small, quick, quiet, flexible (CCD-Timing generator) sequencer – just quick (Digitizing) streaming and control via 1 GBit 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 8

FPGA-based Tomographycameras First picture 9

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

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. . 11

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

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

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

FPGA-based Tomographycameras Characterization setup Ulbricht light source mechanical aperture electronic shutter KIT camera temperature control 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 analysed 15

FPGA-based Tomographycameras Summary 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! 16