Author Affiliations
1 College of Information Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China2 Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, Guangdong 518060, Chinashow less
Fig. 1. Principle of streak camera
Fig. 2. Photograph of large format streak tube
Fig. 3. Structural diagram of internal electrode in large format streak tube
Fig. 4. Structural diagram of reticle
Fig. 5. Test results of static spatial resolution. (a) Image of left part of cathode; (b) image of right part of cathode
Fig. 6. Schematic of dynamic test
Fig. 7. Photograph of test-site
Fig. 8. Test results of dynamic spatial resolution. (a) Image of spatial resolution; (b) maximum intensity of signal; (c) minimum intensity of signal
Fig. 9. Test results of dynamic temporal resolution. (a) Image of temporal resolution; (b) curve of signal intensity
Fig. 10. Test results of dynamic range. (a) Image of dynamic range; (b) maximum intensity of signal; (c) minimum intensity of signal
Length of tube /mm | Diameter of tube /mm | Length of photocathode /mm | Diameter of screen /mm | Magnification | Total voltage /kV | Deflection sensitivity /(mm·kV-1) | Radius of curvature of screen /mm |
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600 | 100 | 50 | 52 | 1.35 | 12 | 64 | 64 |
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Table 1. Structural parameters of large format streak tube
Item | Object height /mm |
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0.1 | 5 | 10 | 15 | 20 | 25 |
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Position of image plane /mm | 598 | 598 | 597 | 595 | 590 | 582 |
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Table 2. Optimal image plane position of electron beam for different object heights
Photocathode | Grid | 1st focus electrode | 1st anode | 2nd focus electrode | 2nd anode |
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-12 | -1.474 | -6 | -1.474 | -10.230 | 0 |
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Table 3. Each electrode voltage for experimental testkV
Item | Spatial resolution /(lp·mm-1) |
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17 | 18 | 19 | 20 | 15 | 16 | 17 | 18 |
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Contrast degree /% | 42.1 | 40.1 | 35.1 | 33.3 | 30.2 | 33.1 | 32.6 | 21.4 | Limit spatial resolution /(lp·mm-1) | 31 | 33 | 32 | 33 | 24 | 26 | 28 | 25 |
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Table 4. Limit spatial resolution of large format streak tube
Parameter | P2XSC | Proposed streak tube |
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Total voltage /kV | 20 | 12 | Limit spatial resolution(5%) /(lp·mm) | 23 | 23 | Magnification | 1.08 | 1.35 | Effect length of photocathode /mm | 34.1 | 32 | Dynamic range | 6500(Channel) | >2000 | Temporal resolution /ps | 3 | 3.3 | Number of CCD pixels /(pixel×pixel) | 4096×4096 | 2048×2048 | Area of CCD /(mm×mm) | 36.9×36.9 | 27×27 | Diameter of fluorescent screen /mm | 62 | 52 | Sweep time /ns | 1.5,3.3,8.4,11 | 2,4,6,8 | Fluorescent powder | P20 | P20 | Structure of screen | | Spherical screen(R64 mm) | Total length of photocathode /mm | 50 | 50 |
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Table 5. Comparison between proposed streak tube and P2XSC