CCD detectors: spying with the Espia

1
CCD detectorsspying with the Espia
D. FernandezA. HomsM. Perez
C. Guilloud M. Papillon V. ReyV. A. Sole
2
Talk outline

• Espia Card
• FReLoN 2k/4M
• Software installation
• Control GUI
• Camera link CCDs
• Dalsa Pantera 1M60
• Sarnoff CAM512

3
Espia card

• Designed to interface the FReLoN 2k
• Requirements specified by ESRF
• Subcontracted to SECAD (Grenoble)
• 2 Gbps fiber optic link (gt 100 m)
• PCI-X 64 bits / 66 MHz
• Bus master Scatter Gather
• Camera serial line and state
• Interrupt driven
• Driver source code available!
• Can write on 32-bit addresses (4 GB)

4
FReLoN 2k

• 4 parallel readout channels
• No Mux only one fiber optic!
• (!) Flexible RoI and binning
• Frame Transfer Mode
• 2048 x 1024 _at_ 16 fps ? 66 MB/s
• Automatic dark current compensation
• Kinetics mode
• Mirror effect

FReLoN 4M

• Only one mode 4 channels Full Frame Mode

5
FReLoN 2k/4M software

• Transtec workstation
• Standard SuSE 8.2 image for Frelon
• Driver
• bliss_drivers dep.
• Server
• frelon_espia bliss_dservers
• No resources just define in DB
• GUI
• Applications ? Analysis ? PyDis
• PyDis Plugins ? PluginFrelon
• Config local ? frelon ? frelon_devices.py
• Spec
• CCD ?ESRF PC CCD Dev
• ccd.mac frelon2k.mac (not packaged yet)

• User guides?CCD?Frelon 2k

6
Starting the FReLoN GUI

• In the shell
• PyDis
• Menu ? Plugins ? Acquire

7
FReLoN GUI Acquisition

• Experience level
• Beginner ?CCD info
• more advanced

8
FReLoN GUI Acquisition

• Standard parameters
• Readout mode synoptics
• Exposure nr of images
• Binning
• Trigger
• RoI mode

9
FReLoN GUI Acquisition

• Status actions
• Image size
• Readout time frame rate
• Start / Stop / Reset
• Status errors

10
FReLoN GUI Acquisition

• Advanced parameters
• Shutter closing time
• Latency time
• Image flip
• RoI Kinetics
• Storage

11
FReLoN GUI Console

• Serial commands to CCD
• Diagnostics
• Not seen by the DS

12
FReLoN GUI Help

• FReLoN 2k Users Guide
• Sequencer doc.

13
Camera Link FOCLA

• Connects to the Espia ? fiber optic
• 2 x Camera Link connectors
• Base configuration
• Serial line Control signals
• Multiplexed
• Multiple pixel packing formats
• All we need not avail. yet
• General I/O TTL signals

14
Dalsa Pantera 1M60

• Higher quantum efficiency
• Frame transfer mode
• 1024 x 1024 _at_ 60 fps ? 120 MB/s
• 512 x 512 _at_ 120 fps
• 1 x Camera Link Base Connector
• Compact!
• Image not reconstructed
• FOCLA does reconstruction

15
Dalsa setup
Image reconstruction
16
Sarnoff CAM512

• High quantum efficiency
• Frame transfer mode
• 512 x 512 _at_ 300 fps ? 150 MB/s
• 512 x 128 _at_ 500 fps
• 2 x 8 ADCs 12 bit
• 2 x Camera Link Base Connectors
• Separate RS-232 serial line
• Robust protocol

17
Sarnoff setup
RS-232
Camera Link
Fiber optic
18
The real setup
19
The results

• 75 frames
• 250 ms
• 40x slowdown
• No sound!
• BW
• Flickering

20
The making of
21
Special effects rotation
Espia 1
Espia 2
22
Image reconstruction in kernel
Espia 1
Espia 2
23
Image reconstruction in library
Frame Post-Operation
FOCLA pixel packing
Pixel swap operation
Reconstructed frame

• Per frame operation
• Warranted only once in a multi-frame (big) buffer
• Callback thread safe
• FOCLA pixel packing will be solved in future

24
Very High memory support
Physical Memory
Implementation in driver

• Driver always has 32-bit aux. frames
• If next target frame has 64-bit pages
• Program each Espia to write on aux frame
• Frame end (all adapters finished) copy the aux.
  frame into target
• Inform waiting threads
• Adapters are not synchronous
• Memory copy (666 MB/s) with IRQ enabled

5.8 GB
Very high RAM
32 bit boundary
4 GB
PCI
3.2 GB
High RAM
800 MB
Low RAM
0 MB
25
Data integrity
Espia 1
?s gt?t ? 8 mm ? ½ 14 mm
Espia 2
26
Sarnoff summary

• Two Espia in parallel ?150 MB/s
• All frames in high memory ? intense memory copy
• Frame post-operations
• Pixel swap
• Check NULL lines
• Hard disk write at max speed (4 disk in RAID 0)
• Online visualisation active
• Data OK!

27
Thank you!