CN1220069C - Penetration ionization chamber for monitoring dosage rate of X-ray source - Google Patents
Penetration ionization chamber for monitoring dosage rate of X-ray source Download PDFInfo
- Publication number
- CN1220069C CN1220069C CN 02156411 CN02156411A CN1220069C CN 1220069 C CN1220069 C CN 1220069C CN 02156411 CN02156411 CN 02156411 CN 02156411 A CN02156411 A CN 02156411A CN 1220069 C CN1220069 C CN 1220069C
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- China
- Prior art keywords
- shell body
- battery lead
- lead plate
- lower house
- lower shell
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- Expired - Lifetime
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- 238000012544 monitoring process Methods 0.000 title abstract description 7
- 230000035515 penetration Effects 0.000 title abstract 2
- 230000001681 protective effect Effects 0.000 claims abstract description 5
- 230000000149 penetrating effect Effects 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 10
- 239000004020 conductor Substances 0.000 claims description 9
- 230000008676 import Effects 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract 2
- 238000007599 discharging Methods 0.000 abstract 1
- 230000009993 protective function Effects 0.000 abstract 1
- 230000005855 radiation Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001514 detection method 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
- 230000007613 environmental effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
The present invention relates to a penetration ionizing chamber used for monitoring X-ray source dose rate, which comprises a lower shell body and an upper shell body; a multilayer electrode insulating plate, two electrode plates, a protection ring and a plate spring which can fix the electrode plates, the protection ring and the multilayer electrode insulating plate, are arranged in the lower shell body from top to bottom; the upper shell body and the lower shell body form a sensitive area, an air filling and discharging area and a wiring area through screw nails; an arranged inflation pipe penetrate through the lower shell body and is opened onto the sensitive area. The present invention has the structural characteristics that the end surface of the sensitive area is provided with a protective cover which performs a protective function to the inflation pipe; the upper end surface of the lower shell body is provided with a rubber sealing ring; the end surface of the wiring area is provided with a wiring connection box which is composed of two socket sets; the electrode wires of the two electrode plates are arranged in the wiring connection box, are respectively connected to the two sockets by flexible wires and are used for inputting high voltage and outputting measurement signals. Compared with the prior art, the present invention can reinforce environment adaptability and enhance measurement precision.
Description
Technical field
The present invention relates to radiation image-forming system, particularly the used penetrating lonization chamber detector assembly of radiation image-forming system belongs to the radiation checking technical field.
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 product of penetrating lonization chamber of the prior art has simple in structure to advantages such as radiation absorption are little, but its poor sealing performance particularly under the environment of humidity or under the environment of ambient gas complicated component, very easily causes ionization chamber work undesired.Again because a double layer screen cable has only been used in high pressure input and signal output, so high pressure arrives the leakage current of signal wire by insulation course, and undesired signal also can be coupled on the signal wire by high pressure zone, has influenced the output of ionization chamber, must influence measuring accuracy.
Summary of the invention
In order to solve above-mentioned problems of the prior art, goal of the invention of the present invention provides a kind of penetrating lonization chamber that is used for the monitoring of x-ray source dose rate.It can strengthen the adaptability of environment and improve measuring accuracy.
In order to reach above-mentioned goal of the invention, technical scheme of the present invention realizes as follows:
A kind of penetrating lonization chamber that is used for the monitoring of x-ray source dose rate; it comprises lower house, upper shell, arranges the first electrode insulation plate, first battery lead plate, the second electrode insulation plate, protection ring, third electrode insulcrete, second battery lead plate, the 4th electrode insulation plate and the leaf spring that above-mentioned battery lead plate, protection ring, insulcrete can be fixed in lower house from bottom to up successively.Upper shell is fixed by screw and lower house and is formed the sensitive volume, fills exhaust area and Wiring area.Set gas-filled tube passes upper shell or lower house leads to the sensitive volume.Its design feature is: the end face of described sensitive volume is provided with the protective cover that gas-filled tube is shielded.The end face of described Wiring area is provided with the terminal box of being made up of two sockets.The contact conductor of first battery lead plate and second battery lead plate places terminal box, and the contact conductor that links to each other with first battery lead plate is connected to first socket by flexible cord, and the contact conductor that links to each other with second battery lead plate is connected to second socket by flexible cord.First socket is used to import high pressure, and second socket is used to export measuring-signal.Upper surface at lower house is equipped with rubber seal.
The present invention has been owing to adopted the structure of sealing, can make the gas of sensitive volume not be subjected to the influence of ambient atmos, avoided having improved and having surveyed stability because the sensitive volume gas componant changes the detection efficiency that causes and the variation of sensitivity, strengthened environmental suitability.Wiring area uses said structure, has reduced influence and the anti-electromagnetic disturbance ability of high pressure to detector output signal, has improved measuring accuracy greatly.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is user mode figure of the present invention.
The present invention will be further described below in conjunction with the drawings and the specific embodiments.
Embodiment
Referring to Fig. 1, Fig. 2, penetrating lonization chamber of the present invention comprises lower house 1, upper shell 11.The leaf spring 10 of the first electrode insulation plate 6, first battery lead plate 4, the second electrode insulation plate 7, protection ring 3, third electrode insulcrete 8, second battery lead plate 5, the 4th electrode insulation plate 9 being installed in lower house 1 from top to bottom successively and above-mentioned battery lead plate, protection ring, insulcrete can being fixed.Be equipped with rubber seal 2 in the upper surface of lower house 1.Upper shell 11 covers on the lower house 1 that installs above-mentioned parts, and fixes with screw.The contact conductor 17 of described two plate electrode plates 4,5 places set terminal box 15, the contact conductor 17 that links to each other with first battery lead plate 4 is connected on first socket 13 by flexible cord, and the contact conductor 17 that links to each other with second battery lead plate 5 is connected on second socket 14 by flexible cord.First socket 13 is used to import the required high pressure of detector work, and second socket 14 is used for the output signal electric current.Gas-filled tube 16 passes lower house 1 and leads to the sensitive volume.The end face of sensitive volume is provided with the protective cover 12 that gas-filled tube is shielded, and protective cover 12 is screwed on lower house 1.Described terminal box 15 is made for metal material.
Referring to Fig. 3, accelerator sends ray and passes penetrating lonization chamber of the present invention and testee, arrives the imaging detector array.Use when of the present invention, penetrating lonization chamber is fixed near on the collimating apparatus of radiographic source target spot, link to each other, just can carry out work with the back circuit.
In the use, when ray enters the sensitive volume of penetrating lonization chamber, make the gas generation ionization of sensitive volume, the positive ion of generation and electronics move to two battery lead plates under effect of electric field, and output forms current signal.Owing to be added with high pressure between two battery lead plates, the leakage current of formation directly flows to the ionization chamber shell of ground connection by protection ring and does not influence the signal of output.Roentgen dose X rate difference, the intensity difference that enters the ray of penetrating lonization chamber, output current intensity difference then, the dose rate of monitoring accelerator that just can be real-time.
Claims (2)
1. one kind is used for the penetrating lonization chamber that the x-ray source dose rate is monitored; it comprises lower house (1); upper shell (11); in lower house (1), arrange the first electrode insulation plate (6) from bottom to up successively; first battery lead plate (4); the second electrode insulation plate (7); protection ring (3); third electrode insulcrete (8); second battery lead plate (5); the 4th electrode insulation plate (9) and can be with above-mentioned battery lead plate; protection ring; the leaf spring (10) that insulcrete is fixing; upper shell (11) is fixing and form the sensitive volume by screw and lower house (1); fill exhaust area and Wiring area; set gas-filled tube (16) passes lower house (1) and leads to the sensitive volume; it is characterized in that: the end face of described sensitive volume is provided with the protective cover (12) that gas-filled tube (16) is shielded; the end face of described Wiring area is provided with the terminal box of being made up of two sockets (15); first battery lead plate (4) places in the terminal box (15) with the contact conductor (17) of second battery lead plate (5); the contact conductor (17) that links to each other with first battery lead plate (4) is connected to first socket (13) by flexible cord; the contact conductor (17) that links to each other with second battery lead plate (5) is connected to second socket (14) by flexible cord; first socket (13) is used to import high pressure; second socket (14) is used to export measuring-signal, and the upper surface of described lower house (1) is equipped with rubber seal (2).
2. according to the described penetrating lonization chamber of claim 1, it is characterized in that: described terminal box (15) is made for metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02156411 CN1220069C (en) | 2002-12-16 | 2002-12-16 | Penetration ionization chamber for monitoring dosage rate of X-ray source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02156411 CN1220069C (en) | 2002-12-16 | 2002-12-16 | Penetration ionization chamber for monitoring dosage rate of X-ray source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1508564A CN1508564A (en) | 2004-06-30 |
| CN1220069C true CN1220069C (en) | 2005-09-21 |
Family
ID=34236202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02156411 Expired - Lifetime CN1220069C (en) | 2002-12-16 | 2002-12-16 | Penetration ionization chamber for monitoring dosage rate of X-ray source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1220069C (en) |
Families Citing this family (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 |
| CN101900826B (en) * | 2010-06-13 | 2012-10-03 | 中国科学院近代物理研究所 | Heavy ion beam current transverse dosage distribution measuring detector and two-dimensional imaging method thereof |
| CN103713308A (en) * | 2012-10-09 | 2014-04-09 | 苏州雷泰医疗科技有限公司 | Flat detector for dosage detection and verification and image detection device adopting the same |
-
2002
- 2002-12-16 CN CN 02156411 patent/CN1220069C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1508564A (en) | 2004-06-30 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: QINGHUA UNIVERSITY; TONGFANGWEISHI TECHNOLOGY CO., Free format text: FORMER NAME OR ADDRESS: QINGHUA UNIVERSITY; TONGFANG WEISHI TECHNOLOGY CO., LTD., QINGHUA |
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| CP03 | Change of name, title or address |
Address after: 100083 A, block 2907, Tongfang science and Technology Plaza, Beijing Co-patentee after: Nuctech Co.,Ltd. Patentee after: TSINGHUA University Address before: 100083 A, block 2907, Tongfang science and Technology Plaza, Beijing Co-patentee before: Nuctech Co.,Ltd. Patentee before: Tsinghua University |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20050921 |