CN2736785Y - Small dimension penetration ionization chamber for X-ray source dosage rate monitoring - Google Patents
Small dimension penetration ionization chamber for X-ray source dosage rate monitoring Download PDFInfo
- Publication number
- CN2736785Y CN2736785Y CN 200420009318 CN200420009318U CN2736785Y CN 2736785 Y CN2736785 Y CN 2736785Y CN 200420009318 CN200420009318 CN 200420009318 CN 200420009318 U CN200420009318 U CN 200420009318U CN 2736785 Y CN2736785 Y CN 2736785Y
- Authority
- CN
- China
- Prior art keywords
- ionization chamber
- tube
- chamber body
- insulating sleeve
- socket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 9
- 230000035515 penetration Effects 0.000 title abstract 4
- 239000000919 ceramic Substances 0.000 claims abstract description 23
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 7
- 230000000149 penetrating effect Effects 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 230000008676 import Effects 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052721 tungsten Inorganic materials 0.000 abstract description 5
- 239000010937 tungsten Substances 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 238000003384 imaging method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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- Measurement Of Radiation (AREA)
Abstract
The utility model discloses a small dimension penetration ionization chamber for X-ray source dosage rate monitoring, relating to the technical field of the radiating detection and comprising an ionization chamber body, an insulating sleeve tube and a connection box. The connection box is positioned on one end of the insulating sleeve tube in which the ionization chamber body is fixed; the two faces of the ionization chamber body and the insulating sleeve tube along the ray direction are provided with grooves; a sealed sensitive region is formed in the ionization chamber body, two electrode tubes fixed in the sensitive region are connected with an inflation tube which passes through a back ceramic tube and a front ceramic tube which are coaxial and extends into the sensitive region, and the other end of the inflation tube is arranged in the connection box; nickel wires and screws extracted from a protective ring and the inflation tube are respectively connected to a first socket and a second socket through a flexible wire to be used for inputting high voltage and outputting measuring signals. The utility model can reduce the dimension of the penetration ionization chamber on the basis of good environmental adaptability and high measuring precision, and therefore, the small dimension penetration ionization chamber can be installed in the tungsten shielding body of an accelerator to reduce the scattering.
Description
Technical field
The utility model relates to the radiation checking technical field, especially for the small size penetrating lonization chamber of x-ray source dose rate monitoring.
Background technology
Penetrating lonization chamber is mainly used to solve the monitoring to accelerator or other radiogenic dose rates, and the beam dose rate that goes out of accelerator is stabilized in the scope, can not too many absorption be arranged and influence imaging ray.
The applicant has declared the Chinese invention patent that an application number is 02156411.6 " a kind of penetrating lonization chamber that is used for the monitoring of x-ray source dose rate " in 2002.It has possessed good environmental suitability, lower X ray absorptivity and high sensitivity, but because volume can only be installed in more greatly outside the tungsten shield of accelerator, has increased scattering.
Summary of the invention
In order to solve above-mentioned problems of the prior art, the purpose of this utility model provides a kind of small size penetrating lonization chamber that is used for the monitoring of x-ray source dose rate.It can make the size of penetrating lonization chamber reduce greatly, thereby can be installed in the tungsten shield of accelerator on the high basis of good environmental adaptability, measuring accuracy, reduces scattering.
In order to reach above-mentioned goal of the invention, the technical solution of the utility model realizes as follows:
The small size penetrating lonization chamber that is used for x-ray source dose rate monitoring, it is formed by ionization chamber body, insulating sleeve with by the terminal box that two sockets are formed.Terminal box is positioned at an end of insulating sleeve, the ionization chamber body by screw retention in insulating sleeve.The ionization chamber body comprises end plate, metal side tube, electrode tube, potsherd, sleeve pipe, nickel strap, pre-ceramic pipe, protection ring, back ceramic pipe, gas-filled tube and plug.Its design feature is, described ionization chamber body and insulating sleeve on two faces of directions of rays, all be carved with fluting.Described insulating sleeve is fixed by its end set support plate and terminal box.The two ends that the end plate of described ionization chamber body and pre-ceramic Guan Jun are fixed on metal side tube form airtight sensitive volume, and two electrode tubes are fixed in the sensitive volume by end set sleeve pipe and potsherd.Electrode tube links to each other with gas-filled tube by nickel strap, and gas-filled tube passes coaxial back ceramic pipe and the pre-ceramic pipe stretches into the sensitive volume, and the other end of gas-filled tube is fixed by plug and placed in the terminal box.Protection ring is enclosed within the joint of pre-ceramic pipe and back ceramic pipe, the nickel wire that will draw from protection ring respectively by flexible cord and screw, gas-filled tube are connected to first socket and second socket is used to import high pressure and output measuring-signal.The panel at first socket and the second socket place is parallel with the ray plane of incidence.
The utility model is owing to adopted above-mentioned structure, on two ray receiving planes of ionization chamber body and insulating sleeve, all be carved with fluting, the gross thickness of ray when the penetrating lonization chamber greatly reduced, when reducing material X ray absorbed again since its other two sides guaranteed the physical strength of penetrating lonization chamber than thick structure.In addition, the panel at socket place is parallel with the ray plane of incidence, can be used for indicating installation direction.Because the utility model has used two electrode tubes, ray passes through between two electrode tubes, has avoided the influence of single electrode pipe to image quality.There is the hermetically-sealed construction of sensitive volume to guarantee that gas is not subjected to the influence of ambient atmos again, improved and surveyed stability, strengthened environmental suitability.Gas-filled tube has been protected in the use of sealed terminal box on the one hand, has reduced the influence of high pressure to detector output signal on the other hand, has improved anti-electromagnetic disturbance ability, has improved measuring accuracy greatly.Compare with prior art, environmental suitability of the present utility model and measuring accuracy are further improved, and particularly size reduces, and in use the utility model can be installed in the tungsten shield of accelerator, reduce scattering greatly, helped improving the image quality of detector image.
Below in conjunction with accompanying drawing and concrete embodiment the utility model is described further.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of insulating sleeve;
Fig. 3 is the structural representation of ionization chamber body;
Fig. 4 is user mode figure of the present utility model.
Embodiment
Referring to Fig. 1, Fig. 2 and Fig. 3, the utility model is formed by ionization chamber body 2, insulating sleeve 1 with by the terminal box 3 that two sockets are formed.On two faces of directions of rays, all be carved with fluting at ionization chamber body 2 and insulating sleeve 1.Insulating sleeve 1 is fixing with terminal box 3 by the set support plate 15 in its end, and ionization chamber body 2 is fixed in the insulating sleeve 1 by screw 28.Ionization chamber body 2 comprises end plate 21, metal side tube 22, electrode tube 23, potsherd 24, sleeve pipe 25, nickel strap 26, pre-ceramic pipe 27, protection ring 213, back ceramic pipe 210, gas-filled tube 212 and plug 211.The two ends that the end plate 21 of ionization chamber body 2 and pre-ceramic pipe 27 all are fixed on metal side tube 22 form airtight sensitive volume, two electrode tubes 23 are fixed in the sensitive volume by end set sleeve pipe 25 and potsherd 24, and electrode tube 23 links to each other with gas-filled tube 212 by nickel strap 26.Gas-filled tube 212 passes coaxial back ceramic pipe 210 and pre-ceramic pipe 27 stretches into the sensitive volume, and the other end of gas-filled tube 212 is fixed by plug 211 and placed in the terminal box 3, and protection ring 213 is enclosed within the joint of pre-ceramic pipe 27 and back ceramic pipe 210.The nickel wire that to draw from protection ring 213 respectively by flexible cord 32 and screw 28, gas-filled tube 212 are connected to first socket 33 and second socket 34 is used to import high pressure and output measuring-signal, first socket 33 is parallel with the ray plane of incidence with the panel at second socket, 34 places.
The utility model is arranged according to the mode of Fig. 4 in use, in the ionization chamber body 2 and the close tungsten shield of radiographic source target spot of insulating sleeve 1 insertion with penetrating lonization chamber 6, is carved with the one side of fluting towards target spot in ionization chamber body 2 and the insulating sleeve 1.Link to each other with the back circuit again after penetrating lonization chamber 6 is fixed and just can carry out work.Accelerator 5 sends ionization chamber body 2, insulating sleeve 1 and the testee that ray passes penetrating lonization chamber 6, arrives imaging detector array 7.
In the use, when ray enters the sensitive volume of penetrating lonization chamber 6, when making the gas generation ionization of sensitive volume, the positive ion of generation and electronics move to two electrode tubes 23 and metal side tube 22 respectively under effect of electric field, and output forms current signal.Owing between two electrode tubes 23 and metal side tube 22, be added with high pressure, the leakage current of formation directly flow to by protection ring 213 ground connection terminal box 3 shell and do not influence the signal of output.Roentgen dose X rate difference, the transmitted intensity difference of incident detector, then the output current intensity difference just can have been monitored the dose rate of accelerator 5 according to this in real time.
Claims (1)
1; the small size penetrating lonization chamber that is used for the monitoring of x-ray source dose rate; it is by ionization chamber body (2); insulating sleeve (1) and the terminal box of being made up of two sockets (3) are formed; terminal box (3) is positioned at an end of insulating sleeve (1); ionization chamber body (2) is fixed in the insulating sleeve (1) by screw (28); ionization chamber body (2) comprises end plate (21); metal side tube (22); electrode tube (23); potsherd (24); sleeve pipe (25); nickel strap (26); pre-ceramic pipe (27); protection ring (213); back ceramic pipe (210); gas-filled tube (212) and plug (211); it is characterized in that; described ionization chamber body (2) and insulating sleeve (1) on two faces of directions of rays, all be carved with fluting; described insulating sleeve (1) is fixing by set support plate in its end (15) and terminal box (3); the two ends that the end plate (21) of described ionization chamber body (2) and pre-ceramic pipe (27) all are fixed on metal side tube (22) form airtight sensitive volume; two electrode tubes (23) are fixed in the sensitive volume by set sleeve pipe in end (25) and potsherd (24); electrode tube (23) links to each other with gas-filled tube (212) by nickel strap (26); gas-filled tube (212) passes coaxial back ceramic pipe (210) and pre-ceramic pipe (27) stretches into the sensitive volume; the other end of gas-filled tube (212) is fixed by plug (211) and is placed in the terminal box (3); protection ring (213) is enclosed within the joint of pre-ceramic pipe (27) and back ceramic pipe (210); nickel wire and the screw (28) that to draw from protection ring (213) respectively by flexible cord (32); gas-filled tube (212) is connected to first socket (33) and second socket (34) is used to import high pressure and output measuring-signal, and first socket (33) is parallel with the ray plane of incidence with the panel at second socket (34) place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420009318 CN2736785Y (en) | 2004-09-14 | 2004-09-14 | Small dimension penetration ionization chamber for X-ray source dosage rate monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420009318 CN2736785Y (en) | 2004-09-14 | 2004-09-14 | Small dimension penetration ionization chamber for X-ray source dosage rate monitoring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2736785Y true CN2736785Y (en) | 2005-10-26 |
Family
ID=35307520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420009318 Expired - Lifetime CN2736785Y (en) | 2004-09-14 | 2004-09-14 | Small dimension penetration ionization chamber for X-ray source dosage rate monitoring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2736785Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1330977C (en) * | 2004-09-14 | 2007-08-08 | 清华大学 | Small size penetration ionization chamber for monitoring X-ray source dosage rate |
| CN109275257A (en) * | 2018-07-24 | 2019-01-25 | 东莞中子科学中心 | Method and resulting object in the outer surface elongate material that can wind component |
-
2004
- 2004-09-14 CN CN 200420009318 patent/CN2736785Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1330977C (en) * | 2004-09-14 | 2007-08-08 | 清华大学 | Small size penetration ionization chamber for monitoring X-ray source dosage rate |
| CN109275257A (en) * | 2018-07-24 | 2019-01-25 | 东莞中子科学中心 | Method and resulting object in the outer surface elongate material that can wind component |
| CN109275257B (en) * | 2018-07-24 | 2021-04-06 | 东莞中子科学中心 | Method for fixing an elongated material on the outer surface of a windable component and resulting object |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20040914 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |