Imaging of Large Format High Spatiotemporal Resolution X-Ray Streak Tube

Jingjin Zhang; Fangke Zong; Baoguo Lei; Baoping Guo; Qinlao Yang

doi:10.3788/AOS201838.1211003

Acta Optica Sinica, Volume. 38, Issue 12, 1211003(2018)

Imaging of Large Format High Spatiotemporal Resolution X-Ray Streak Tube

Jingjin Zhang^1,2、*, Fangke Zong², Baoguo Lei², Baoping Guo^1,2, and Qinlao Yang^2、*

Author Affiliations

¹ College of Information Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China

² Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China

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Figures & Tables(15)

Fig. 1. Principle of streak camera

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Fig. 2. Photograph of large format streak tube

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Fig. 3. Structural diagram of internal electrode in large format streak tube

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Fig. 4. Structural diagram of reticle

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Fig. 5. Test results of static spatial resolution. (a) Image of left part of cathode; (b) image of right part of cathode

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Fig. 6. Schematic of dynamic test

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Fig. 7. Photograph of test-site

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Fig. 8. Test results of dynamic spatial resolution. (a) Image of spatial resolution; (b) maximum intensity of signal; (c) minimum intensity of signal

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Fig. 9. Test results of dynamic temporal resolution. (a) Image of temporal resolution; (b) curve of signal intensity

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Fig. 10. Test results of dynamic range. (a) Image of dynamic range; (b) maximum intensity of signal; (c) minimum intensity of signal

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Table 1. Structural parameters of large format streak tube

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Table 1. Structural parameters of large format streak tube

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
600	100	50	52	1.35	12	64	64

Table 2. Optimal image plane position of electron beam for different object heights
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Table 2. Optimal image plane position of electron beam for different object heights
Item Object height /mm
0.1 5 10 15 20 25
Position of image plane /mm 598 598 597 595 590 582

Table 3. Each electrode voltage for experimental testkV
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Table 3. Each electrode voltage for experimental testkV
Photocathode Grid 1^st focus electrode 1^st anode 2^nd focus electrode 2^nd anode
-12 -1.474 -6 -1.474 -10.230 0

Table 4. Limit spatial resolution of large format streak tube
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Table 4. Limit spatial resolution of large format streak tube
Item Spatial resolution /(lp·mm^-1)
17 18 19 20 15 16 17 18
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

Table 5. Comparison between proposed streak tube and P2XSC

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Table 5. Comparison between proposed streak tube and P2XSC

Parameter	P2XSC	Proposed streak tube
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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Jingjin Zhang, Fangke Zong, Baoguo Lei, Baoping Guo, Qinlao Yang. Imaging of Large Format High Spatiotemporal Resolution X-Ray Streak Tube[J]. Acta Optica Sinica, 2018, 38(12): 1211003

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