CN103837883A - Megawatt ion source power density distribution measuring method - Google Patents
Megawatt ion source power density distribution measuring method Download PDFInfo
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- CN103837883A CN103837883A CN201410057125.8A CN201410057125A CN103837883A CN 103837883 A CN103837883 A CN 103837883A CN 201410057125 A CN201410057125 A CN 201410057125A CN 103837883 A CN103837883 A CN 103837883A
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Abstract
The invention discloses a megawatt ion source power density distribution measuring method. The measuring system comprises a measuring target board, a thermocouple transducer, guide lines, a cooling water pipe, and a data collecting system. Heavy charged particle beams emitted by high current ion source makes effects on the measuring target board, a plurality of blind holes of certain height are drilled on the measuring target board in a hot drilling mode, the thermocouple transducer is arranged in the blind holes to form a transducer array and is connected to the data collecting system through the guide lines, the cooling water pipe is arrange in the measuring target in a coil pipe shape according to position of a heat transducer, and power density distribution of the heavy charged particle beams can be calculated through position and temperature of the thermocouple transducer. In actual application, the megawatt ion source power density distribution measuring method can be used under megawatt power and extremely complicated electromagnetic environment, and is capable of effectively measuring power density distribution of the heavy charged particle beams produced by megawatt high current ion source, good in repeatability, and stable and reliable in work.
Description
Technical field
The present invention relates to a kind of measuring method of ion gun power density distribution, be specifically related to a kind of measure energetic particle beam that high current ion source draws and measure target plate and interact by thermocouple sensor after the variation that occurs of material surface temperature realize the method that ion gun power density distribution is measured.
Background technology
What MW class high current ion source was exported is the high current particle beams, after neutralisation or magnetic core logical circuit deflection, exports neutral beam, is mainly used in plasma heating and material at high temperature characteristic research.High energy particle energy has very high energy and power, common power measurement method generally directly utilizes the target plate temperature of the thermocouple measurement high current particle beams, or indirect utilization faraday bucket measurement etc., be difficult to possess high hot corbel material and good anti-electromagnetic interference capability, and error is larger, be difficult to the real power Density Distribution of reaction particle bundle accurately, can not meet the power distribution measuring of the high-power high current particle beams.
Summary of the invention
The object of this invention is to provide a kind of measuring method of MW class high current ion source power density distribution, to solve the problem that can not effectively measure the power density distribution of MW class high current ion source in prior art.
The technical solution adopted in the present invention is:
A kind of measurement mechanism of MW class ion gun power density distribution, it is characterized in that: comprise measurement target plate, thermocouple sensor, wire, cooling water pipe, data acquisition system (DAS) composition, the energetic particle beam of high current ion source transmitting is shot and is measured on target plate, drill through several certain depth blind holes at the measurement target plate back side, thermocouple sensor is distributed in blind hole interior composition sensor array and is wired to data acquisition system (DAS), cooling water pipe is distributed in measurement target according to be coiler-type according to the position of thermal sensor, can calculate the power density distribution of energetic particle beam according to the position of thermocouple sensor and temperature.
Described measurement target utilizes heat conductivility better and the higher pure copper material of fusing point is made, and drills through several blind holes at measurement back face of target according to demand, and blind hole bottom surface is d2 in the absorption surface spacing of measuring target; In measurement target inside, winding type cooling water pipe is set simultaneously, between cooling water pipe and outer field copper billet, utilizes vacuum brazing to make abundant contact, blind hole and cooling water pipe vertical range are d1.Wherein the value of d1 and d2 need to be come to determine according to demand.
Described thermocouple sensor is that sensitivity is higher, the armoured thermocouple that measurement range is larger, and thermopair can accurately reflect temperature variation, and can normally work under the vertiginous condition of temperature.
Described wire need to can normally be worked under higher temperature, and does not come off with thermocouple sensor, and the ultra-weak electronic signal transmitting should not be subject to extraneous electromagnetic interference (EMI).
Described thermocouple sensor array, according to the actual requirements, appropriate design array, comprises number and the position of sensor, and can accurately calculate target plate power density distribution according to the measured temperature of sensor.
Described cooling water pipeline is stainless-steel tube, cooling water pipe inside surface has certain smooth finish, and through Passivation Treatment, guarantees that cooling water pipe can not pollute chilled water, can be due to the impurity of miscellaneous part inside yet, cause the obstruction of water pipe obstruction or miscellaneous part.
Described data acquisition system (DAS), has hyperchannel, data acquisition that sampling precision is higher; The ultra-weak electronic signal with the function multiple thermocouple sensor outputs of Measurement accuracy simultaneously of cold junction compensation, reduces measuring error and anti-interference function; In order to ensure the stability of acquisition system work and the security of operation, the power supply of acquisition system is powered separately by isolating transformer.
Of the present invention adopted apparatus structure is simple, easy for installation, reliable and stable, the method can or select measurement target plate and the suitable thermocouple sensor etc. of suitable parameter to measure according to different power designs, is applicable to various powerful measurement occasions.The efficiency of transmitting according to heat, in the time that the high current particle beams and target plate interact at measurement target surface temperature, heat passes to thermopair, and according to thermal change, can calculate power density distribution situation.Meanwhile, the speed of transmitting according to heat, when thermopair has obtained after surface temperature, heat is delivered to chilled water, and according to the value of the d1 setting and d2, chilled water both can absorb unnecessary heat in time, did not affect again the in good time measuring accuracy of thermopair.
Brief description of the drawings
Fig. 1 is structure principle chart of the present invention
Wherein, 1 measure target plate; 2 thermocouple sensors; 3 thermocouple measurement wires; 4 measure target plate and particle beams surface of contact; 5 cooling water pipes; 6 thermocouple sensor arrays, 7 data acquisition system (DAS)s.
Embodiment
As shown in Figure 1, a measuring method schematic diagram for MW class high current ion source power density distribution, measuring system forms by measuring target plate 1, thermocouple sensor 2, thermocouple measurement wire 3, measurement target plate and particle beams surface of contact 4, cooling water pipe 5, data acquisition system (DAS) 7.The energetic particle beam of high current ion source transmitting is applied to be measured on target plate, drill through several certain depth blind holes at the measurement target plate back side, thermocouple sensor is distributed in blind hole interior composition sensor array and is wired to data acquisition system (DAS), and cooling water pipe is distributed in measurement target according to be winding type according to the position of thermal sensor.Wherein thermocouple sensor is distributed in and measures above target according to demand, and chilled water is flowed by direction shown in arrow in figure; The parameter d 1 and the d2 that measure in target plate 1 arrange according to demand and process, and insert the cooling water pipe of winding type in measurement target inside, to accelerate heat transmission; Thermocouple sensor 2 need to be welded on measures target inside, to guarantee can Measurement accuracy to measure the real time temperature on target surface, and thermocouple sensor 2 need to use argon arc welding with linking of wire, guarantee that wire contacts with thermocouple sensor well, and under compared with high ambient temperature condition, be also difficult for breaking down; Cooling water pipe 5 can directly be connected to above cooling water tank, and cooling water pipeline inside need to have enough pressure just can order about the circulation of chilled water; Data acquisition system (DAS) 7 is connected to the wire of thermocouple sensor array, mutual electrical isolation between each data acquisition channel, and with thermopair be relation one to one, increase cold junction compensation module at data acquisition system (DAS) front end, guarantee the accuracy of data acquisition; Calculate that according to the data that collect the high current particle beams, in the power density size of measuring target plate surface, in conjunction with the position of thermocouple sensor, can calculate the power density distribution situation of the high current particle beams.
In actual use, the present invention uses under the high-power of MW class and extremely complicated electromagnetic environment, can well measure the distribution situation of MW class power density that high current ion source produces, favorable repeatability, and working stability is reliable.
Claims (5)
1. the measuring method of a MW class ion gun power density distribution, it is characterized in that: comprise measurement target plate, thermocouple sensor, wire, cooling water pipe, data acquisition system (DAS), the energetic particle beam of high current ion source transmitting is shot and is measured on target plate, drill through several certain depth blind holes at the measurement target plate back side, thermocouple sensor is distributed in blind hole interior composition sensor array and is wired to data acquisition system (DAS), cooling water pipe is distributed in measurement target according to be coiler-type according to the position of thermal sensor, can calculate the power density distribution of energetic particle beam according to the position of thermocouple sensor and temperature.
2. the measuring method of MW class ion gun power density distribution according to claim 1, is characterized in that: described measurement target plate utilizes pure copper material to make.
3. the measuring method of MW class ion gun power density distribution according to claim 1, it is characterized in that: described thermocouple sensor is armoured thermocouple, and with target plate and wire argon arc welding, thermocouple sensor Array Design is square or circular in blind hole.
4. the measuring method of MW class ion gun power density distribution according to claim 1, is characterized in that: described cooling water pipeline is stainless steel pipes, and inside surface, through Passivation Treatment, is directly connected to above cooling water tank.
5. the measuring method of MW class ion gun power density distribution according to claim 1, it is characterized in that: the described mutual electrical isolation of data acquisition system (DAS) interchannel, power separately by isolating transformer, and in data acquisition system (DAS) front end arranged cold end compensating module.
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| CN201410057125.8A CN103837883A (en) | 2014-02-19 | 2014-02-19 | Megawatt ion source power density distribution measuring method |
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| CN201410057125.8A CN103837883A (en) | 2014-02-19 | 2014-02-19 | Megawatt ion source power density distribution measuring method |
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| CN103837883A true CN103837883A (en) | 2014-06-04 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106249274A (en) * | 2016-08-23 | 2016-12-21 | 中国科学院等离子体物理研究所 | A kind of method of on-line measurement high-power particle beam beam power density distribution |
| CN106340432A (en) * | 2016-09-27 | 2017-01-18 | 中国科学院合肥物质科学研究院 | Ion source rhombic-sectioned molybdenum electrode outer surface profiling mould successive machining and molding method |
| CN106385757A (en) * | 2016-09-18 | 2017-02-08 | 中国科学院上海应用物理研究所 | Neutron generation target |
| CN109856666A (en) * | 2018-12-07 | 2019-06-07 | 中国科学院高能物理研究所 | Prototyping system for the experiment of high energy particle line |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106249274A (en) * | 2016-08-23 | 2016-12-21 | 中国科学院等离子体物理研究所 | A kind of method of on-line measurement high-power particle beam beam power density distribution |
| CN106385757A (en) * | 2016-09-18 | 2017-02-08 | 中国科学院上海应用物理研究所 | Neutron generation target |
| CN106340432A (en) * | 2016-09-27 | 2017-01-18 | 中国科学院合肥物质科学研究院 | Ion source rhombic-sectioned molybdenum electrode outer surface profiling mould successive machining and molding method |
| CN109856666A (en) * | 2018-12-07 | 2019-06-07 | 中国科学院高能物理研究所 | Prototyping system for the experiment of high energy particle line |
| CN109856666B (en) * | 2018-12-07 | 2020-06-26 | 中国科学院高能物理研究所 | Prototype system for high-energy particle beam experiment |
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Application publication date: 20140604 |