Transcript Slide 1
Image Acquisition in LCLS Sheng Peng EPICS Meeting 2008, Shanghai 3/12/2008 Image Acquisition in LCLS 1 Sheng Peng [email protected] Applications We have many applications which need camera Injection Laser Stabilization Beam Profile Monitors: OTR/YAG Experiments Requirement Resolution, Frame rate CCD sensitivity/Dynamic rage Thermal noise Beam synced acquisition capability Interface to control system LCLS standard IOC platform is EPICS/RTEMS/MV6100 3/12/2008 Image Acquisition in LCLS 2 Sheng Peng [email protected] Possible Data Throughput on MVME6100 The data throughput may be very high 640*480*2bytes/pixel*120Hz ~= 72MB/s 1392*1040*2bytes/pixel*15Hz ~= 42MB/s Theoretical maximum throughput Giga-Ethernet: ~100MB/s USB2.0: 60MB/s Firewire 1394b: 100MB/s 32-Bit 66MHz PCI: 264MB/s 64-Bit 66MHz PCI: 528MB/s 3/12/2008 Image Acquisition in LCLS 3 Sheng Peng [email protected] Possible Camera Interfaces There are a few most popular interfaces in camera industry: Cameralink Ethernet LVDS(RS-644) USB2.0 Firewire (2.38Gbps for Base) (1Gbps) (1.923Gbps) (480Mbps) (400Mbps/800Mbps) Some decisions are easy: Ethernet is attractive Firewire is better than USB More camera choices Higher power Less CPU involvement RTEMS no USB stack CameraLink is better than LVDS CameraLink is serialized LVDS, so less wires More popular 3/12/2008 Image Acquisition in LCLS 4 Sheng Peng [email protected] Possible Camera Interfaces The most of cameras we are using now are all CameraLink cameras so far We have two methods to integrate Cameralink interface into our control system: Ethernet PMC Frame Grabber 3/12/2008 Image Acquisition in LCLS 5 Sheng Peng [email protected] Ethernet Interface for Camera As always, I love Ethernet. But at that time, the choice we had was CameraLink to Ethernet converter. Proprietary protocol, can’t get any info out from Pleora. Later on it turned to GigEVision. Vendor driver works with particular Ethernet chip Pleora and JAI PULNiX and another ten companies started GigEVision We still need protocol/source code if we are not using Windows/Linux to interface to camera Even now, CameraLink is probably more sophisticated. 3/12/2008 Image Acquisition in LCLS 6 Sheng Peng [email protected] Profile Monitor Image Acquisition UNIQ UP900CL-12B camera CCD: Shutter: Resolution: Progressive: External Trigger: Full scan: Analog Output: Cameralink: 1/2” Full Frame 1392x1040 Yes Yes 14.97Hz Yes Yes EDT PMC DV C-Link Cameralink compatible 32bit/66MHz PCI External trigger input RCX C-Link Convert between CameraLink and 50ns Duplex LC fiber up to 300m Tested with ~70m fiber and ~110ºF 3/12/2008 Image Acquisition in LCLS 7 Sheng Peng [email protected] Profile Monitor 3/12/2008 Image Acquisition in LCLS 8 Sheng Peng [email protected] Snapshot: historical moment 3/12/2008 Image Acquisition in LCLS 9 Sheng Peng [email protected] Drive Laser Image Acquisition PULNiX TM-6710CL camera CCD: Shutter: UV option: Resolution: Progressive: External Trigger: Full scan: Analog Output: Cameralink: Genlock: 1/2” Full Frame Yes 648x484 Yes Yes 120Hz Yes Yes Yes EDT PMC DV C-Link Cameralink compatible 32bit/66MHz PCI External trigger input 3/12/2008 Image Acquisition in LCLS 10 Sheng Peng [email protected] Drive Laser Camera Crate 3/12/2008 Image Acquisition in LCLS 11 Sheng Peng [email protected] LCLS Drive Laser 3/12/2008 Image Acquisition in LCLS 12 Sheng Peng [email protected] Integrated Plug-and-Plug System should be very welcome 3/12/2008 Image Acquisition in LCLS 13 Sheng Peng [email protected] Test Stand 3/12/2008 Image Acquisition in LCLS 14 Sheng Peng [email protected] Test Stand 3/12/2008 Image Acquisition in LCLS 15 Sheng Peng [email protected] Picture 3/12/2008 Image Acquisition in LCLS 16 Sheng Peng [email protected] Air Force Reticle 3/12/2008 Image Acquisition in LCLS 17 Sheng Peng [email protected] Snapshot: history buffer 3/12/2008 Image Acquisition in LCLS 18 Sheng Peng [email protected] 10 10 10 6 Spectral Intensity Spectral Intensity Dark/White Image Structure Spectrum Single image Diff image 4 2 100 200 300 400 500 10 Single image Diff image 10 10 600 6 4 2 100 -1 10 10 4 2 100 200 300 400 -1 Image Acquisition in LCLS 10 10 10 500 Vert. Frequency (pixel ) 3/12/2008 300 400 500 600 Hor. Frequency (pixel ) 6 Spectral Intensity Spectral Intensity 10 200 -1 Hor. Frequency (pixel ) 6 4 2 100 200 300 400 -1 Vert. Frequency (pixel ) 19 Sheng Peng [email protected] 500 CCD test (Data analyzed by Henrik Loos) Dark image noise histogram Counts 10 10 10 10 10 10 Single image Diff image Fit = 3.7 Fit = 4.9 5 4 10 3 Counts 10 White image noise histogram 10 10 2 1 10 0 -30 -20 -10 0 10 Intensity Level 3/12/2008 Image Acquisition in LCLS 20 30 10 40 5 4 3 2 1 0 20 20 Single image Diff image Fit = 6.6 Fit = 7.1 30 40 50 60 Intensity Level Sheng Peng [email protected] 70 80 90