CN207301351U - A kind of dosage rate range simulates expanding unit - Google Patents
A kind of dosage rate range simulates expanding unit Download PDFInfo
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- CN207301351U CN207301351U CN201721112181.2U CN201721112181U CN207301351U CN 207301351 U CN207301351 U CN 207301351U CN 201721112181 U CN201721112181 U CN 201721112181U CN 207301351 U CN207301351 U CN 207301351U
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- China
- Prior art keywords
- graphite cavity
- ionization chamber
- graphite
- rate range
- cavity ionization
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 45
- 239000010439 graphite Substances 0.000 claims abstract description 45
- 230000005855 radiation Effects 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 238000004088 simulation Methods 0.000 claims abstract description 3
- 230000001174 ascending effect Effects 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000001959 radiotherapy Methods 0.000 description 1
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- Measurement Of Radiation (AREA)
Abstract
A kind of dosage rate range simulation expanding unit is the utility model is related to, includes the graphite cavity ionization chamber of more than 2 and the graphite cavity size difference of each graphite cavity ionization chamber, so that the electric signal that each graphite cavity ionization chamber produces under identical radiation condition（Electric current）There is a fixed ratio（Several times or more than ten times）, each graphite cavity ionization chamber is connected linear for doing the dosage rate range of dosemeter with the electrometer of dosemeter respectively.The utility model obtains the electric signal with fixed ratio by setting multiple graphite cavity ionization chambers of different graphite cavity sizes, so as to simulate spreading agent dose rate, realizes the dosage rate range linearity test of dosemeter.
Description
Technical field
It the utility model is related to dosemeter Calibration Technology field, and in particular to a kind of dosage rate range simulates expanding unit.
Background technology
The calibrating of dosemeter need check dosage rate range it is linear, i.e., dosage rate for 0.1Gy/min, 1.0Gy/min,
Test under the conditions of the radiation field of 2.0Gy/min, 3.0Gy/min and 5.0Gy/min to the linear of dosimeter electricity part, but
The radiation field dose rate in some calibrating places only has 0.1Gy/min, this just can not meet the requirement of measurement.
The dosemeter that radiotherapy uses is made of ionisation chamber and electrometer two parts, and ionisation chamber is the harvester of radiation,
Will radiation（X-ray）Collection changes into electric signal, ionisation chamber（Graphite cavity ionization chamber）Acquisition zone be cavity that graphite surrounds,
Cavity is bigger, and the electric signal for gathering and converting under identical radiation condition is also bigger；Electric signal is then amplified and turned by electrometer
It is melted into digital signal.
Utility model content
The utility model aims to provide a kind of dosage rate range simulation expanding unit, cannot meet dosage to solve radiation field
The problem of counting test of linearity.
The technical solution of the utility model is as follows：
A kind of dosage rate range simulates expanding unit, includes the graphite cavity ionization chamber of more than 2 and each graphite cavity
The graphite cavity size of ionisation chamber is different, so that the electric signal that each graphite cavity ionization chamber produces under identical radiation condition（Electricity
Stream）There is a fixed ratio（Several times or more than ten times）, each graphite cavity ionization chamber is connected with the electrometer of dosemeter respectively
It is linear for doing the dosage rate range of dosemeter.
The beneficial effects of the utility model：Obtained by setting multiple graphite cavity ionization chambers of different graphite cavity sizes
There must be the electric signal of fixed ratio, so as to simulate spreading agent dose rate, realize the dosage rate range linearity test of dosemeter.
Brief description of the drawings
The utility model is illustrated below according to attached drawing：
Fig. 1 is the principle schematic of the utility model；
In figure, 1-1 graphite cavity ionization chamber I, 1-2 graphite cavity ionization chamber II, 1-3 graphite cavity ionization chamber III, 1-4 stones
Black cavity ionization chamber IV, 1-5 graphite cavity ionization chamber V, 2 electrometers.
Embodiment
The utility model is further described with reference to specific embodiment.
Embodiment 1
As shown in Figure 1, which includes 5 graphite cavity ionization chambers, and the graphite of each graphite cavity ionization chamber is empty
Chamber is of different sizes, according to graphite cavity it is ascending be followed successively by I 1-1 of graphite cavity ionization chamber, II 1-2 of graphite cavity ionization chamber,
V 1-5 of III 1-3 of graphite cavity ionization chamber, IV 1-4 of graphite cavity ionization chamber and graphite cavity ionization chamber.5 graphite cavity ionizations
The current signal that room produces under the conditions of same radiation field has a fixed ratio, each graphite cavity ionization chamber respectively with dosemeter
Electrometer 2 connect it is linear for doing the dosage rate range of dosemeter.
The embodiment is obtained respectively under the conditions of identical radiation field by setting the ionisation chamber of different graphite cavity sizes
There must be the electric signal of fixed ratio, so as to simulate spreading agent dose rate, realize the dosage rate range linearity test of dosemeter.
Claims (2)
1. a kind of dosage rate range simulates expanding unit, it is characterized in that：Include the graphite cavity ionization chamber of more than 2 and each stone
The graphite cavity size of black cavity ionization chamber is different, so that the telecommunications that each graphite cavity ionization chamber produces under identical radiation condition
Number there is a fixed ratio, each graphite cavity ionization chamber is connected with the electrometer of dosemeter for doing the agent of dosemeter respectively
Dose rate range is linear.
2. dosage rate range simulation expanding unit according to claim 1, is characterized in that：With 5 graphite cavity ionization chambers,
The graphite cavity size of each graphite cavity ionization chamber is different, according to graphite cavity it is ascending be followed successively by graphite cavity ionization chamber I,
Graphite cavity ionization chamber II, graphite cavity ionization chamber III, graphite cavity ionization chamber IV and graphite cavity ionization chamber V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721112181.2U CN207301351U (en) | 2018-03-16 | 2018-03-16 | A kind of dosage rate range simulates expanding unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721112181.2U CN207301351U (en) | 2018-03-16 | 2018-03-16 | A kind of dosage rate range simulates expanding unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207301351U true CN207301351U (en) | 2018-05-01 |
Family
ID=62439224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721112181.2U Expired - Fee Related CN207301351U (en) | 2018-03-16 | 2018-03-16 | A kind of dosage rate range simulates expanding unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207301351U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576979A (en) * | 2017-09-01 | 2018-01-12 | 山东省计量科学研究院 | A kind of close rate range simulates expanding unit |
| CN115779281A (en) * | 2022-10-28 | 2023-03-14 | 中子高新技术产业发展(重庆)有限公司 | Measuring device and method for mixed radiation field |
-
2018
- 2018-03-16 CN CN201721112181.2U patent/CN207301351U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576979A (en) * | 2017-09-01 | 2018-01-12 | 山东省计量科学研究院 | A kind of close rate range simulates expanding unit |
| CN107576979B (en) * | 2017-09-01 | 2024-04-12 | 山东省计量科学研究院 | Dose rate range simulation expanding device |
| CN115779281A (en) * | 2022-10-28 | 2023-03-14 | 中子高新技术产业发展(重庆)有限公司 | Measuring device and method for mixed radiation field |
| CN115779281B (en) * | 2022-10-28 | 2023-10-31 | 中子高新技术产业发展(重庆)有限公司 | Device and method for measuring mixed radiation field |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180501 |