CN1877781A - Wide time-resolved microchannel plate framing image converter tube - Google Patents

Abstract

The invention discloses a double-microchannel board framing image-converter tube of broad time resolution, which is composed of double-microchannel board framing image-converter tube and control unit, wherein the micro-band line projection on double-microchannel board intersects to form exposure region; the synchronous controller phase connects microband line of negative high-pressure pulse-to-DC power on the input side channel board; the positive high-pressure pulse-to-DC power connects microband line on the output side channel board; the negative high-pressure DC power connects fluorescent screen. The invention can select pulse, pulse breadth and time gap of pulses through controlling power, which realizes to produce two-dimension multi-framing image of ps-us grade multi-time resolution, high-gain.

Description

A kind of two microchannel plate framing image converter tubes of wide time-resolution

Technical field

The present invention relates to the image-taking system of a kind of ps～μ s level wide time-resolution, many framings, high-gain, be specifically related to two microchannel plate framing image converter tubes of a kind of ps～μ s level wide time-resolution.

Background technology

Microchannel plate (MCP, Microchannel Plate) travelling wave gating formula grenz ray framing camera is as a kind of two dimensional image measurement mechanism, be widely used in the diagnosis of the ultrafast phenomena in the X ray spectral region in recent years, its range of application has contained nuclear physics, Biomedical Photonics, plasma physics, high field physics or the like new branch of science both at home and abroad.

At present, for the time resolution of ps magnitude, no matter single little band or two microchannel plate travelling wave gating formula framing cameras of many microstrip structures, framing number average can reach several width of cloth～ten several, be mainly used in laser one inertial confinement fusion (ICF) diagnostic techniques of higher ps level of time-space resolution or μ m level.But for also having many time-varying processes that occur in several ns levels even tens ns scopes in the research fields such as plasma pinch (Z-pinch) radioscopic image diagnosis research, high current plasma radiation source and synchrotron radiation.Even at some other physics, also there are the time-varying process of many hundred ns or μ s level even ms level in chemistry, biomedical sector.This type of camera needs the time resolution of ns level, " light laser and the particle beams " (Qiu Mengtong, Lv Min, Wang Kuilu etc. for example, Z-pinch X ray time resolution multiple image diagnostic system, the light laser and the particle beams, Vol.15, No.1,2003,101-104) a kind of 8 pin hole framing cameras that are applied to the ns level time for exposure of plasma pinch (Z-pinch) are disclosed, this machine adopts two microchannel plate gatings, shutter pulse 5ns once can write down the image in four moment.U.S.'s " scientific instrument comment " periodical (Carl.J.Pawley, A.V.Deniz et al, Characterization of two-gated microchannel plateframing cameras, Rev.Sci.Ins., 71 (3), 2000,1286-1295) the two microchannel plate gating framing cameras of a kind of four little bands are disclosed, its input and output at microstrip transmission line is equipped with capacitance and rectangle ferrite pearl respectively, shutter pulse 100ps～2.5ns, obtain time for exposure several radioscopic images, and can use longer electric pulse and direct current, but it can only obtain 4 width of cloth pictures near 100ps～2.5ns.And for the framing camera that has pinhole device, its operation principle is: the radioscopic image of the plasma that is taken is through the different parts of the input face of several pin holes while Cheng Zaishuan microchannel plates, if the width of shutter pulse is narrower ps level, microstrip line on two microchannel plate input faces should be considered as long line, be that ps level electric pulse is when transmitting on two microchannel plate input faces along microstrip line, arbitrary moment has only one section zone that voltage is arranged, the some pin-hole imagings of process are after this regional radioscopic image is by ps level electric pulse gating, the photoelectron image that produces will be strengthened by two microchannel plates, arrive phosphor screen output visible images.Electric pulse transmission monoblock channel plate plane, need 200～300ps approximately according to for example diameter 56mm microchannel plate microstrip line length computation of using in the reality, same little is with at most by the gating picture number, and time for exposure and image pitch have just been determined by the pulsewidth and the transmission speed of strobe pulse.Then can make whole piece microstrip transmission line zone be in optional logical state for long pulse, what in fact corresponding some pin-hole images reflected on microstrip line all is the interior image information of about 300ps.The picture number that therefore can truly reflect different period change procedures is less, has limited seizure and research to ns or longer time for exposure incident to a great extent.

Except temporal resolution and framing number, the intensity gain amount of camera imaging also is the key factor that needs are considered.The gain of the two microchannel plates of monolithic can reach 10 ³, two Chevron types that two microchannel plates are formed are called for short " V-type " structure, and gain can reach 10 ⁶In the camera of great majority " V-type " structure, second two microchannel plate mainly plays DC current gain.Often increase picosecond frame camera prototype (the Chang Zenghu that people such as tiger has proposed a kind of new " V-type " structure in the U.S. nineteen ninety-five SPIE meeting, Shan Bing, Liu Xiuqin et al, Gated MCPframing with 60 ps exposure time, SPIE, Vol.2549 1995 53-59), it all is coated with parallel microstrip line on two two microchannel plate front and rear panel faces, and the projection on the plate face is overlapping.When parallel microstrip line passes to strobe pulse respectively on the microchannel plate plate face of front and back, so not only can improve gain but also can shorten the time for exposure, but the camera of this structure is mainly used in the ps pulse gate, can reach the purpose that shortens the time for exposure, still can not solve the less problem of picture number of ns level time resolution change procedure.

Summary of the invention

The object of the present invention is to provide two microchannel plate framing image converter tubes of a kind of ps～μ s level wide time-resolution, it has solved background technology less technical problem of picture number under ns～μ s level time resolution.

Technical solution of the present invention is:

A kind of two microchannel plate framing image converter tubes of wide time-resolution comprise two microchannel plate framing image converter tubes, the control unit that is connected with two microchannel plate framing image converter tubes; The described pair of microchannel plate framing image converter tube comprise two microchannel plates 1 and with the phosphor screen 2 that is positioned at this pair microchannel plate 1 output and closely is sticked and puts, described phosphor screen 2 is made on the fibre faceplate 3; Described pair of microchannel plate 1 comprises input side microchannel plate 11 and outlet side microchannel plate 12, be coated with on the input face of described input side microchannel plate 11 parallel, make the photocathode microstrip line Mi of double as electrode again, evaporation has one deck grounding electrode face 13 in its output face; Be coated with microstrip line Ni parallel, that make electrode in the output face of described outlet side microchannel plate 12, evaporation has one deck grounding electrode face 14 on its input face; The grounding electrode face of described input side microchannel plate 11 and outlet side microchannel plate 12 is 13,14 coaxial, closely be sticked and put, and its special character is: but microstrip line Mi on described input side microchannel plate 11 and the outlet side microchannel plate 12 and Ni intersect in two microchannel plate 1 axial projections and constitute exposure area 5; Described control unit comprises negative high voltage pulse/DC power supply 41, positive high voltage pulse/DC power supply 42, negative high voltage DC power supply 43 and accurate isochronous controller 44; Microstrip line Mi on the described input side microchannel plate 11 is connected with negative high voltage pulse/DC power supply 41, and the grounding electrode face 13 on this input side microchannel plate 11 joins with the direct current output or the zero potential end of negative high voltage pulse/DC power supply 41; Microstrip line Ni on the described outlet side microchannel plate 12 is connected with positive high voltage pulse/DC power supply 42, and the grounding electrode face 14 on this outlet side microchannel plate 12 joins with the direct current output or the zero potential end of negative high voltage pulse/DC power supply 42; Described negative high voltage pulse/DC power supply 41 all is connected with accurate isochronous controller 44 with positive high voltage pulse/DC power supply 42, and described negative high voltage DC power supply 43 is connected with phosphor screen 2.

Can closely be sticked between the grounding electrode face 13 of above-mentioned input side microchannel plate 11 and the grounding electrode face 14 of outlet side microchannel plate 12 and put the multiplication plate 15 that the two sides all is coated with electrode, the DC power supply 45 of multiplication plate 15 is connected with the electrode on these multiplication plate 15 two sides respectively.

But above-mentioned exposure area 5 with adopt on microstrip line Mi and the outlet side microchannel plate 12 on the input side microchannel plate 11 microstrip line Ni the axial projection of two microchannel plate 1 mutually quadrature constitute suitable.

Microstrip line Mi on the above-mentioned input side microchannel plate 11 and the microstrip line Ni on the outlet side microchannel plate 12 with uniform be set to good, can also non-uniform setting.

The line of microstrip line Ni is several on the line number of microstrip line Mi and the outlet side microchannel plate 12 on the above-mentioned input side microchannel plate 11 can equate according to application need, also can be unequal.

The nearly subsides distance of above-mentioned pair of microchannel plate 1 output and phosphor screen 2 is advisable with 0.3mm～1.5mm, and the nearly distance of pasting is good with 0.5mm.

The interband of above-mentioned microstrip line Mi and microstrip line Ni is advisable with 2mm～5mm at interval, is good with 4mm; The bandwidth of every microstrip line of microstrip line Mi and microstrip line Ni is advisable with 4mm～20mm, is good with 6mm.

The interband of above-mentioned microstrip line Mi and microstrip line Ni is spaced apart 4mm, and the bandwidth of every microstrip line of described microstrip line Mi and microstrip line Ni is 6mm.

The present invention has the following advantages:

1. the microchannel plate that adopts two groups of microstrip lines to intersect each other, can select time interval between strobe pulse, pulse pulsewidth and the strobe pulse flexibly by the control power supply, carry out the photoelectron image gating, can realize obtaining of the many times resolution visible images of ps～μ s level.

2. can be according to concrete needs, by changing the physical dimension and the shape of two microchannel plates, as, circular, square or other flat shape, and the geometry and the quantity of the microstrip line that is coated with, the figure film size number or the picture size of design.

3. adopt the two microchannel plate structures of cascade, both improved gain, reduced the background noise that incident light, direct puncture light cause again, improved picture quality.

4. the present invention can be applicable to inertial confinement fusion, laser plasma generation, plasma pinch numerous radiodiagnosis fields such as (Z-pinch), also can be applicable to technical fields such as ultraviolet detection, visible light detecting, infrared acquisition, it provides two-dimentional many picture frames of the many times resolutions of a kind of ps～μ s level, high-gain to obtain technology.

Description of drawings

Fig. 1 is a structural principle schematic diagram of the present invention;

But Fig. 2-3 is the projection and the exposure area schematic diagram of two groups of microstrip lines on the two microchannel plates of the present invention;

Fig. 4 is provided with the structural representation of multiplication plate for the present invention.

Drawing reference numeral explanation: 1-two microchannel plates, 11-microchannel plate, 12-microchannel plate, 13-grounding electrode face, 14-grounding electrode face, 15-multiplication plate, 2-phosphor screen, 3-fibre faceplate, 41-negative high voltage pulse/DC power supply, 42-positive high voltage pulse/DC power supply, 43-negative high voltage DC power supply, 44-accurate isochronous controller, 45-multiplication plate DC power supply, but 5-exposure area.

Embodiment

Two microchannel plate framing image converter tubes are cores of framing camera chain.Two microchannel plate framing image converter tubes that the present invention adopts mainly are made of with the phosphor screen 2 that is produced on the fibre faceplate 3 the two microchannel plates 1 of Chevron type, referring to accompanying drawing 1.On the input face of input side microchannel plate 11, be coated with parallel microstrip line Mi, not only make photocathode but also make electrode.In the output face of outlet side microchannel plate 12, be coated with parallel microstrip line Ni, make electrode.Whole output face evaporation at input side microchannel plate 11 has one deck grounding electrode face 13, and evaporation has one deck grounding electrode face 14 on the whole input face of outlet side microchannel plate 12. Grounding electrode face 13 and 14 is close together, and it is overlapping that microstrip line Mi on the input side microchannel plate 11 and the microstrip line Ni direction on the outlet side microchannel plate 12 are intersected each other, but form the zone of exposure area 5.It is overlapping that microstrip line Mi and microstrip line Ni intersect, but the formed exposure area 5 of its projection referring to Fig. 2-3, microstrip line Mi and microstrip line Ni constitute suitable in two microchannel plate 1 axial projections with quadrature.

Control unit mainly is made of negative high voltage pulse/DC power supply 41, positive high voltage pulse/DC power supply 42, negative high voltage DC power supply 43 and accurate isochronous controller 44.Microstrip line Mi on the input side microchannel plate 11 is connected with negative high voltage pulse/DC power supply 41, and the grounding electrode face 13 on this input side microchannel plate 11 joins with the direct current output or the zero potential end of negative high voltage pulse/DC power supply 41.Microstrip line Ni on the outlet side microchannel plate 12 is connected with positive high voltage pulse/DC power supply 42, and the grounding electrode face 14 on this outlet side microchannel plate 12 joins with the direct current output or the zero potential end of negative high voltage pulse/DC power supply 42.Negative high voltage pulse/DC power supply 41 all is connected with accurate isochronous controller 44 with positive high voltage pulse/DC power supply 42.Negative high voltage DC power supply 43 is connected with phosphor screen 2.Have only when microchannel plate 11 and microchannel plate 12 when certain overlapping location of quadrature is added with voltage simultaneously, photoelectron image just can be cascaded gating in this zone and strengthen, and on phosphor screen 2 corresponding positions, obtains a width of cloth visible images.Other nonoverlapping zone, or the overlapping region is not when being added with voltage simultaneously, all can not get access to image on the relevant position of phosphor screen 2.

Referring to Fig. 4, can closely be sticked between the grounding electrode face 13 of input side microchannel plate 11 and the grounding electrode face 14 of outlet side microchannel plate 12 and put the multiplication plate 15 that the two sides all is coated with electrode.The DC power supply 45 of multiplication plate 15 is connected with the double-sided electrode of multiplication plate 15 respectively.

Microstrip line among microstrip line Mi of the present invention and the microstrip line Ni with uniform be good, can also be non-uniform.The line number of microstrip line Mi and the line of microstrip line Ni is several can equate according to application need also can be unequal.The general desirable 0.3mm～1.5mm of nearly subsides distance of two microchannel plate 1 outputs and phosphor screen 2 is good with 0.5mm.The general desirable 4mm～20mm of the bandwidth of every microstrip line of microstrip line Mi and microstrip line Ni is good with 6mm.The interband of microstrip line Mi and microstrip line Ni is general desirable 2mm～5mm at interval, is good with 4mm.

Design principle of the present invention: with an exposure area M ₁N ₁Be example, referring to Fig. 2-3.Suppose at first on the microstrip line of input side microchannel plate that it is V that institute adds electric pulse _m(t), adding electric pulse on the microstrip line of outlet side microchannel plate is V _n(t).V _nWhen (t) being direct current, can be considered is a kind of special circumstances of long pulse.If hypothesis V _m(t) and V _n(t) be Gaussian-shaped pulse, promptly

$V_m\left(t\right)=V_{\mathrm{mp}}\exp [-\ln 2{\left(\frac{t}{T_m}\right)}^2]----\left(1\right)$

$V_n\left(t\right)=V_{\mathrm{np}}\exp [-\ln 2{\left(\frac{t}{T_n}\right)}^2]----\left(2\right)$

V wherein _Mp, V _NpAnd T _m, T _nBe respectively V _m(t), V _n(t) peak value and full width at half maximum (FWHM) value.V _n(t) relative V _m(t) T time of delay _dBe electronics most probable transit time T in the microchannel plate _TrIf T _m=1ns, i.e. electric pulse V _m(t) width electronics most probable transit time T in the microchannel plate _Tr, adopt " energy direct ratio hypothesis " to analyze, the electron gain of microchannel plate can be expressed as

$G={\mathrm{\δ}}^n={\left(\frac{V}{n{V}_c}\right)}^{k\·n}=G_0\·V^r----\left(3\right)$

K and V in the formula _cBe constant, depend on the secondary yield, δ is that single-stage is beaten the electron gain of taking level.(3) formula is represented the non-linear relation of gain of monolithic microchannel plate and operating voltage, G ₀Be initial gain, $G_0={\left(\frac{1}{n{V}_c}\right)}^r,$ γ is a nonlinear factor, and γ=kn depends on the characteristic of microchannel plate.With reference to (3) formula, the monolithic microchannel plate by the electric pulse gating after, gain can be expressed as:

$G_m\left(t\right)=G_0{\left[V_m\left(t\right)\right]}^r=G_0\&CenterDot;V_{\mathrm{mp}}^r\&CenterDot;\exp {[-\ln 2{\left(\frac{t}{T_m}\right)}^2]}^r=G_0\&CenterDot;V_{\mathrm{mp}}^r\&CenterDot;\exp [-\ln 2{\left(\frac{1}{\frac{{\mathrm{<figure-callout\; id="1"\; label="T\; m\; r"\; filenames="A20051004276500131.png"\; state="\{\{state\}\}">T</figure-callout>}}_m}{r^{}}}\right)}^2]----\left(4\right)$

$G_n\left(t\right)=G_0\&CenterDot;V_{\mathrm{np}}^r\&CenterDot;\exp [-\ln 2{\left(\frac{t}{\frac{{\mathrm{<figure-callout\; id="1"\; label="T\; n\; r"\; filenames="A20051004276500131.png"\; state="\{\{state\}\}">T</figure-callout>}}_n}{r^{}}}\right)}^2]----\left(5\right)$

The overall height half-breadth (FWHM) of the gain of monolithic microchannel plate is the overall height half-breadth (FWHM) of its electric pulse as can be seen

Be referred to as " narrow effect is pressed in gain ".

If the relative delay T of two microchannel plates _d=T _Tr, then,

Cascade overall gain: G _Mn(t)=G _m(t) * G _n(t) (6)

The peak value overall gain: $G_{\mathrm{mn}}=G_0^2\&CenterDot;{(V_{\mathrm{mp}}\&CenterDot;V_{\mathrm{np}})}^r----\left(7\right)$

The overall height half-breadth: $T_{\mathrm{mn}}=\frac{T_m{T}_n}{\sqrt{r({\mathrm{<figure-callout\; id="2"\; label="T\; m"\; filenames="A20051004276500131.png"\; state="\{\{state\}\}">T</figure-callout>}}_m^{}+T_n^2)}}----\left(8\right)$

Analyze: if get T _m=T _n, under the non-linear gain stack of two microchannel plate cascades, can obtain shorter than monolithic microchannel plate

Time for exposure doubly, and can reduce the background noise that X ray direct puncture light causes, improved picture quality.

Under the DC current gain model, the theoretical value of electron transit time can be calculated by formula (9) in the microchannel plate:

$T_{\mathrm{tr}}={\left(\frac{2m}{\mathrm{eV}}\right)}^{\frac{1}{2}}\frac{\mathrm{<figure-callout\; id="2"\; label="L"\; filenames="A20051004276500131.png"\; state="\{\{state\}\}">L</figure-callout>}}{2^{1/2}}{\left(\frac{L}{D}\right)}^{\frac{1}{2}}----\left(9\right)$

M, e are respectively the quality and the electric weight of electronics, and selected parameter is length L=0.5mm, aperture D=12.5 μ m, draw ratio L/D=40: 1 microchannel plate, its electronics most probable of Theoretical Calculation transit time T _Tr～250ps (V=800V).On average get parameter k=0.5, V _c=21.8, n=18.6.So γ=9.3, G ₀=exp (55.85).

Owing to need the time interval between the control gating electric pulse, also need consider the transmission situation of electric pulse on microstrip line.Get the relative dielectric constant ε of microstrip line _r=3.5 (general ε _r=2.9～4.0), the propagation velocity of electric pulse on microstrip line $v_p=\frac{c}{\sqrt{{\mathrm{\&epsiv;}}_r}}=1.59\&times;{10}^{11}\mathrm{mm}/s,$ The microstrip line that can be coated with on the microchannel plate of Φ 56mm size is the longest to be 51mm, estimation electric pulse V _m(t) time of the little band of transmission whole piece is about 310ps.If little band is divided into four by the imaging zone, but the exposure area is a 6mm * 6mm square, and each regional burst transmissions time is 40ps, is spaced apart 20ps.

The present invention can adopt open or multiple photocathode structure such as negative electrode packaged type, and spectral response range then can be from extreme ultraviolet to infrared, to be applicable to more occasions.By the size or the increase microstrip line number that increase two microchannel plates 1, the picture number can be multiplied.For example, if on the plane of two microchannel plates 1 of Φ 100mm size eight microstrip lines of making, the camera of then identical pair of microchannel plate structure can obtain 64 width of cloth images.By reducing the microstrip line number, also can make few picture, large-sized camera.By increasing the multiplier stage of two microchannel plates 1, as, between input side microchannel plate 11 and outlet side microchannel plate 12, increase microchannel plate quantity, carry out multistage amplification, can enlarge gain ranging.For example add one 0.5 thick microchannel plate, gain can improve 10 ³Doubly.Thin microchannel plate can reduce gain ranging to a certain extent, but can improve time-resolved obtaining; Thick microchannel plate can improve gain ranging, but can reduce time resolution to a certain extent.Specifically can choose according to the needs coupling that camera uses.

The course of work of the present invention is as follows:

1) but. form the exposure area: get two microchannel plates that are manufactured with the microstrip line of vertical bar shape, parallel arrangement, its grounding electrode face 13 is pressed close to be provided with, and microstrip line Mi and the microstrip line Ni on the outlet side microchannel plate 12 on the input side microchannel plate 11 are intersected in the projection of microchannel plate plate face, but the microstrip line Mi of projection overlapping region correspondence and the zone on the microstrip line Ni form exposure area 5.

2). give the microstrip line making alive:, give input side microstrip line Mi and outlet side microstrip line Ni making alive by accurate isochronous controller 4 control power supplys.

3). produce image gating: but when the exposure area 5 of input side microstrip line Mi and outlet side microstrip line Ni is added with voltage simultaneously, produce image gating.

4). obtain several visible images: but on phosphor screen 2, with the 5 corresponding zones, exposure area that produce image gating, obtain several visible images.

By accurate isochronous controller 44 control power supplys, give microstrip line Mi and microstrip line Ni making alive, can adopt following steps:

1). by the negative high voltage pulse/DC power supply 41 in the accurate isochronous controller 44 control power supplys, give the capable pulse voltage that adds successively of the 1st～m among the microstrip line Mi.

2). when each row among the microstrip line Mi adds pulse voltage,, add pulse voltage for the 1st～n leu among the microstrip line Ni by the positive high voltage pulse/DC power supply 42 in the accurate isochronous controller 4 control power supplys.

Can determine for the capable time interval that adds pulse successively of the 1st～m among the microstrip line Mi according to actual needs.The width that adds pulse when row institute among the microstrip line Mi is during greater than required time of this burst transmissions whole piece microstrip line, and the inferior time interval that adds pulse of leu can be determined according to actual needs among the microstrip line Ni; The width that adds pulse when row institute among the microstrip line Mi is during less than required time of this burst transmissions whole piece microstrip line, but among the microstrip line Ni leu to add time interval of pulse definite by the transmission speed of this horizontal pulse among spacing between the exposure area and the microstrip line Mi.

Claims (9)

1. two microchannel plate framing image converter tubes of a wide time-resolution comprise two microchannel plate framing image converter tubes, the control unit that is connected with two microchannel plate framing image converter tubes;

The described pair of microchannel plate framing image converter tube comprise two microchannel plates (1) and with the phosphor screen (2) that is positioned at this pair microchannel plate (1) output and closely is sticked and puts, described phosphor screen (2) is made on the fibre faceplate (3); Described pair of microchannel plate (1) comprises input side microchannel plate (11) and outlet side microchannel plate (12), be coated with on the input face of described input side microchannel plate (11) parallel, make the photocathode microstrip line Mi of double as electrode again, evaporation has one deck grounding electrode face (13) in its output face; Be coated with microstrip line Ni parallel, that make electrode in the output face of described outlet side microchannel plate (12), evaporation has one deck grounding electrode face (14) on its input face; The grounding electrode face (13) of described input side microchannel plate (11) and outlet side microchannel plate (12), (14) be coaxial, closely be sticked and put, and it is characterized in that: microstrip line Mi on described input side microchannel plate (11) and the outlet side microchannel plate (12) and Ni at two microchannel plates (1) but axial projection intersect and constitute exposure area (5); Described control unit comprises negative high voltage pulse/DC power supply (41), positive high voltage pulse/DC power supply (42), negative high voltage DC power supply (43) and accurate isochronous controller (44); Microstrip line Mi on the described input side microchannel plate (11) is connected with negative high voltage pulse/DC power supply (41), and the grounding electrode face (13) on this input side microchannel plate (11) joins with output of the direct current of negative high voltage pulse/DC power supply (41) or zero potential end; Microstrip line Ni on the described outlet side microchannel plate (12) is connected with positive high voltage pulse/DC power supply (42), and the grounding electrode face (14) on this outlet side microchannel plate (12) joins with output of the direct current of negative high voltage pulse/DC power supply (42) or zero potential end; Described negative high voltage pulse/DC power supply (41) all is connected with accurate isochronous controller (44) with positive high voltage pulse/DC power supply (42), and described negative high voltage DC power supply (43) is connected with phosphor screen (2).

2. two microchannel plate framing image converter tubes of wide time-resolution according to claim 1, it is characterized in that: closely being sticked between the grounding electrode face (13) of described input side microchannel plate (11) and the grounding electrode face (14) of outlet side microchannel plate (12) is equipped with the multiplication plate (15) that the two sides all is coated with electrode, and the DC power supply (45) of described multiplication plate (15) is connected with the electrode on this multiplication plate (15) two sides respectively.

3. two microchannel plate framing image converter tubes of wide time-resolution according to claim 1 and 2 is characterized in that: but described exposure area (5) be by the microstrip line Ni on the microstrip line Mi on the input side microchannel plate (11) and the outlet side microchannel plate (12) the axial projection of two microchannel plates (1) mutually quadrature constitute.

4. two microchannel plate framing image converter tubes of wide time-resolution according to claim 3 is characterized in that: the microstrip line Ni on microstrip line Mi on the described input side microchannel plate (11) and the outlet side microchannel plate (12) all is uniform settings.

5. two microchannel plate framing image converter tubes of wide time-resolution according to claim 4 is characterized in that: described input side microchannel plate (11) is gone up the line number of microstrip line Mi and line number that outlet side microchannel plate (12) is gone up microstrip line Ni equates.

6. two microchannel plate framing image converter tubes of wide time-resolution according to claim 5 is characterized in that: the nearly subsides distance of described pair of microchannel plate (1) output and phosphor screen (2) is 0.3mm～1.5mm.

7. two microchannel plate framing image converter tubes of wide time-resolution according to claim 6 is characterized in that: the nearly subsides distance of described pair of microchannel plate (1) output and phosphor screen (2) is 0.5mm.

8. two microchannel plate framing image converter tubes of wide time-resolution according to claim 6, it is characterized in that: the interband of described microstrip line Mi and microstrip line Ni is spaced apart 2mm～5mm, and the bandwidth of every microstrip line of described microstrip line Mi and microstrip line Ni is 4mm～20mm.

9. two microchannel plate framing image converter tubes of wide time-resolution according to claim 8, it is characterized in that: the interband of described microstrip line Mi and microstrip line Ni is spaced apart 4mm, and the bandwidth of every microstrip line of described microstrip line Mi and microstrip line Ni is 6mm.

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