CN107884738B - Calibrating device for magnetic measurement sensor in superconducting proton treatment device - Google Patents
Calibrating device for magnetic measurement sensor in superconducting proton treatment device Download PDFInfo
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- CN107884738B CN107884738B CN201711331528.7A CN201711331528A CN107884738B CN 107884738 B CN107884738 B CN 107884738B CN 201711331528 A CN201711331528 A CN 201711331528A CN 107884738 B CN107884738 B CN 107884738B
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- 238000005259 measurement Methods 0.000 title claims abstract description 17
- 239000000523 sample Substances 0.000 claims abstract description 62
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 14
- 238000002661 proton therapy Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 238000012360 testing method Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000007572 expansion measurement Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009206 nuclear medicine Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229940121896 radiopharmaceutical Drugs 0.000 description 1
- 239000012217 radiopharmaceutical Substances 0.000 description 1
- 230000002799 radiopharmaceutical effect Effects 0.000 description 1
- 238000001959 radiotherapy Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 210000004881 tumor cell Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Magnetic Treatment Devices (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
The invention discloses a calibrating device for a magnetic measurement sensor in a superconducting proton treatment device, which comprises a Hall probe vacuum guide rod and an NMR standard Hall probe arranged at the top end of the Hall probe vacuum guide rod, wherein the NMR standard Hall probe is clamped by a first bidirectional fixing clamp and is fixed with the Hall probe vacuum guide rod; the invention realizes that the NMR standard Hall probe and the SENIS Hall sensor are mutually parallel and accurately positioned at the test position.
Description
Technical Field
The invention belongs to the technical field of proton medical device engineering, relates to a calibrating device, and in particular relates to a calibrating device for a magnetic measurement sensor in a superconducting proton therapeutic device.
Background
The cyclotron has wide application in the field of nuclear medicine, in particular to the fields of radiopharmaceuticals, tumor treatment and the like. Compared with the traditional radiotherapy, the proton treatment has the advantages of directly striking tumor cells, avoiding the damage of healthy tissues caused by radiation, having short treatment time and the like. The proton treatment system mainly comprises an isochronous superconductive cyclotron, an energy selection system, a beam transmission system, a treatment system and the like, wherein a host system of the superconductive cyclotron is used for leading out stable beam current, an electromagnetic field of a resonant cavity accelerates the beam current, and the motion of the beam current needs the constraint of the isochronous magnetic field.
Isochronous superconductive cyclotrons are the core equipment in proton therapy systems, where the processing and installation of the magnet system is critical. In order to ensure that an isochronous magnetic field is provided, a magnetic field measurement of the cyclotron is required. The standard NMR Hall probe cannot realize the expansion measurement of the spatial magnetic field of the narrow central area of the superconducting accelerator due to the external dimension, and a SENIS Hall sensor with smaller external dimension is required to complete the magnetic field measurement work. However, the factory calibration range of the SENIS sensor is 0-2T, the measurement accuracy cannot meet the requirement on the range of 2-5T of the superconducting accelerator, the range of the SENIS sensor 2-5T is required to be calibrated, however, because the directivity of the SENIS Hall sensor is sensitive and the sensor is required to be placed in a narrow magnetic field generating device for calibration, it is particularly important to design a structural tool with adjustable distance and ensuring the position accuracy of the sensor.
Disclosure of Invention
The invention aims to provide a calibrating device for a magnetic measurement sensor in a superconducting proton treatment device, which ensures the calibration of SENIS Hall sensors.
The aim of the invention can be achieved by the following technical scheme:
the calibrating device comprises a Hall probe vacuum guide rod and an NMR standard Hall probe arranged at the top end of the Hall probe vacuum guide rod, wherein the NMR standard Hall probe is clamped by a first bidirectional fixing clamp and is fixed with the Hall probe vacuum guide rod;
The NMR standard Hall probe is sleeved with a Hall probe supporting guide rod, and the Hall probe supporting guide rod is clamped at the top end of the NMR standard Hall probe through a second bidirectional fixing clamp;
the NMR standard Hall probe top is provided with a sensor supporting seat, a SENIS Hall sensor to be calibrated is attached to the sensor supporting seat, and the SENIS Hall sensor is pressed and fixed through a sensor pressing plate.
Further, the first bidirectional fixing clamp and the second bidirectional fixing clamp comprise two semicircular clamping plates which are oppositely arranged, clamping grooves which are adaptive to the NMR standard Hall probe are formed in the middle of each clamping plate, and the two clamping plates are clamped on the NMR standard Hall probe through the clamping grooves in the middle of each clamping plate and are clamped and fixed through bolts.
Further, a key groove which is suitable for the SENIS Hall sensor is formed on the surface of the sensor supporting seat.
Further, a wiring groove is formed in the Hall probe supporting guide rod.
Further, a notch is formed in the sensor support seat.
Further, a gap is formed in the Hall probe vacuum guide rod.
Further, a flange is arranged at the top end of the Hall probe vacuum guide rod.
Further, the tail end of the Hall probe vacuum guide rod is spliced and sealed through two notched semicircular G10 sheets, and sealing is realized by adopting vacuum sealing mud.
The invention has the beneficial effects that: the calibration device for the magnetic measurement sensor in the superconducting proton treatment device provided by the invention realizes that the NMR standard Hall probe and the SENIS Hall sensor are mutually parallel and accurately positioned at the test position.
Drawings
The invention is described in further detail below with reference to the drawings and the specific embodiments.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an exploded view of the present invention.
Fig. 3 is an enlarged view of a portion of fig. 2 in accordance with the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "open," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like indicate orientation or positional relationships, merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
As shown in fig. 1-3, the invention provides a calibrating device for a magnetic measurement sensor in a superconducting proton treatment device, which comprises a hall probe vacuum guide rod 1 and an NMR standard hall probe 2 arranged at the front end of the hall probe vacuum guide rod 1, wherein the NMR standard hall probe 2 is clamped by a first bidirectional fixing clamp 31 and is fixed with the hall probe vacuum guide rod 1, the first bidirectional fixing clamp 31 clamps the NMR standard hall probe 2, so that the axial dimension of the calibrating device can be adjusted, and the adjustable range is 15mm.
The NMR standard Hall probe 2 is sleeved with a Hall probe supporting guide rod 4, and the Hall probe supporting guide rod 4 is clamped at the top end of the NMR standard Hall probe 2 through a second bidirectional fixing clamp 32.
The first bidirectional fixing clamp 31 and the second bidirectional fixing clamp 32 comprise two semicircular clamping plates which are oppositely arranged, clamping grooves which are matched with the NMR standard Hall probe 2 are formed in the middle of each clamping plate, the two clamping plates are clamped on the NMR standard Hall probe 2 through the clamping grooves in the middle of each clamping plate, and the clamping plates are clamped and fixed through bolts.
The top end of the NMR standard Hall probe 2 is provided with a sensor supporting seat 5, a SENIS Hall sensor 6 to be calibrated is attached to the sensor supporting seat 5, and the SENIS Hall sensor 6 is pressed and fixed through a sensor pressing plate 7.
The surface of the sensor supporting seat 5 is provided with a key groove 51 which is matched with the SENIS Hall sensor 6, and the depth of the key groove 51 is 0.9mm.
The Hall probe supporting guide rod 4 is provided with a wiring groove 41 for burying a wiring 8 of the SENIS Hall sensor 6, the width of the wiring groove 41 is 3.5mm, and the depth is 4mm.
The sensor support seat 5 is provided with a notch 52 which exposes the marked position of the NMR standard Hall probe 2.
The Hall probe vacuum guide rod 1 is provided with a notch 11 for passing through the joint cables of the NMR standard Hall probe 2 and the SENIS Hall sensor 6.
The top end of the Hall probe vacuum guide rod 1 is provided with a KF40 flange 9 for vacuum sealing of the whole calibrating device, and the Hall probe vacuum guide rod 1 is made of a stainless steel 304 pipe with the diameter of 22 mm.
The tail end of the Hall probe vacuum guide rod 1 is spliced and sealed by two notched semicircular G10 sheets 10, and sealing is realized by adopting vacuum sealing mud.
The calibration device for the magnetic measurement sensor in the superconducting proton treatment device provided by the invention realizes that the NMR standard Hall probe and the SENIS Hall sensor are mutually parallel and accurately positioned at the test position.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative of the structures of this invention and various modifications, additions and substitutions for those skilled in the art can be made to the described embodiments without departing from the scope of the invention or from the scope of the invention as defined in the accompanying claims.
Claims (6)
1. A calibration device for a magnetic measurement sensor in a superconducting proton therapy device, characterized by: the NMR standard Hall probe comprises a Hall probe vacuum guide rod (1) and an NMR standard Hall probe (2) arranged at the top end of the Hall probe vacuum guide rod (1), wherein the NMR standard Hall probe (2) is clamped by a first bidirectional fixing clamp (31) and is fixed with the Hall probe vacuum guide rod (1);
the NMR standard Hall probe (2) is sleeved with a Hall probe supporting guide rod (4), and the Hall probe supporting guide rod (4) is clamped at the top end of the NMR standard Hall probe (2) through a second bidirectional fixing clamp (32);
The top end of the NMR standard Hall probe (2) is provided with a sensor supporting seat (5), a SENIS Hall sensor (6) to be calibrated is attached to the sensor supporting seat (5), and the SENIS Hall sensor (6) is pressed and fixed through a sensor pressing plate (7);
The first bidirectional fixing clamp (31) and the second bidirectional fixing clamp (32) comprise two semicircular clamping plates which are oppositely arranged, clamping grooves which are matched with the NMR standard Hall probe (2) are formed in the middle of each clamping plate, the two clamping plates are clamped on the NMR standard Hall probe (2) through the clamping grooves in the middle of each clamping plate, and the clamping plates are clamped and fixed through bolts;
and a key groove (51) which is matched with the SENIS Hall sensor (6) is formed in the surface of the sensor supporting seat (5).
2. A calibration device for a magnetic measurement sensor in a superconducting proton therapy apparatus according to claim 1, wherein: the Hall probe supporting guide rod (4) is provided with a wiring groove (41).
3. A calibration device for a magnetic measurement sensor in a superconducting proton therapy apparatus according to claim 1, wherein: and a gap (52) is formed in the sensor support seat (5).
4. A calibration device for a magnetic measurement sensor in a superconducting proton therapy apparatus according to claim 1, wherein: a gap (11) is formed in the Hall probe vacuum guide rod (1).
5. A calibration device for a magnetic measurement sensor in a superconducting proton therapy apparatus according to claim 1, wherein: a flange (9) is arranged at the top end of the Hall probe vacuum guide rod (1).
6. A calibration device for a magnetic measurement sensor in a superconducting proton therapy apparatus according to claim 1, wherein: the tail end of the Hall probe vacuum guide rod (1) is spliced and sealed by two notched semicircular G10 sheets (10), and sealing is realized by adopting vacuum sealing mud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711331528.7A CN107884738B (en) | 2017-12-13 | 2017-12-13 | Calibrating device for magnetic measurement sensor in superconducting proton treatment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711331528.7A CN107884738B (en) | 2017-12-13 | 2017-12-13 | Calibrating device for magnetic measurement sensor in superconducting proton treatment device |
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| Publication Number | Publication Date |
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| CN107884738A CN107884738A (en) | 2018-04-06 |
| CN107884738B true CN107884738B (en) | 2024-05-03 |
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| CN201711331528.7A Active CN107884738B (en) | 2017-12-13 | 2017-12-13 | Calibrating device for magnetic measurement sensor in superconducting proton treatment device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108549043B (en) * | 2018-06-26 | 2024-05-31 | 合肥中科离子医学技术装备有限公司 | Magnetic measurement Hall probe temperature control device of cyclotron |
| CN108761370B (en) * | 2018-08-01 | 2024-05-24 | 合肥中科离子医学技术装备有限公司 | Magnetic measurement Hall probe calibrating device of cyclotron |
| CN109342983B (en) * | 2018-11-09 | 2024-03-29 | 安徽工程大学 | Hall sensor calibration device and calibration method thereof |
| CN117630787A (en) * | 2023-11-16 | 2024-03-01 | 杭州嘉辐科技有限公司 | Hall sensor and temperature sensor calibration system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004003585A1 (en) * | 2002-07-01 | 2004-01-08 | European Organisation For Nuclear Research - Cern | Device for calibration of magnetic sensors in three dimensions |
| CN102798827A (en) * | 2012-08-01 | 2012-11-28 | 安泰科技股份有限公司 | Magnet measuring device and magnet measuring method |
| CN104181475A (en) * | 2013-05-22 | 2014-12-03 | 迈克纳斯公司 | Three-dimensional hall sensor for detecting a spatial magnetic field |
| CN206709921U (en) * | 2016-08-31 | 2017-12-05 | 北京瑞阳信通科技有限公司 | A kind of BL |
| CN207528904U (en) * | 2017-12-13 | 2018-06-22 | 合肥中科离子医学技术装备有限公司 | A kind of calibrating installation for magnetic survey sensor in superconduction proton therapeutic appts |
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2017
- 2017-12-13 CN CN201711331528.7A patent/CN107884738B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004003585A1 (en) * | 2002-07-01 | 2004-01-08 | European Organisation For Nuclear Research - Cern | Device for calibration of magnetic sensors in three dimensions |
| CN102798827A (en) * | 2012-08-01 | 2012-11-28 | 安泰科技股份有限公司 | Magnet measuring device and magnet measuring method |
| CN104181475A (en) * | 2013-05-22 | 2014-12-03 | 迈克纳斯公司 | Three-dimensional hall sensor for detecting a spatial magnetic field |
| CN206709921U (en) * | 2016-08-31 | 2017-12-05 | 北京瑞阳信通科技有限公司 | A kind of BL |
| CN207528904U (en) * | 2017-12-13 | 2018-06-22 | 合肥中科离子医学技术装备有限公司 | A kind of calibrating installation for magnetic survey sensor in superconduction proton therapeutic appts |
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