CN112569485A - Be used for medical accelerator transport line beam current detection device of superconductive proton - Google Patents
Be used for medical accelerator transport line beam current detection device of superconductive proton Download PDFInfo
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- CN112569485A CN112569485A CN202011449217.2A CN202011449217A CN112569485A CN 112569485 A CN112569485 A CN 112569485A CN 202011449217 A CN202011449217 A CN 202011449217A CN 112569485 A CN112569485 A CN 112569485A
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- 238000001514 detection method Methods 0.000 title claims abstract description 42
- 238000012545 processing Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 3
- 210000003437 trachea Anatomy 0.000 claims description 2
- 230000006378 damage Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 239000001064 degrader Substances 0.000 description 1
- 208000014674 injury Diseases 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
- 238000002727 particle therapy Methods 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1071—Monitoring, verifying, controlling systems and methods for verifying the dose delivered by the treatment plan
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1075—Monitoring, verifying, controlling systems and methods for testing, calibrating, or quality assurance of the radiation treatment apparatus
Abstract
The invention discloses a detection device for a transport line beam of a medical superconducting proton accelerator, which comprises a multi-wire ionization chamber, a vacuum box, a bracket, an execution element, a position detection element and a control system, wherein the multi-wire ionization chamber is provided with a vacuum box; the multi-wire ionization chamber is arranged in the vacuum box, the execution element is fixedly arranged on the bracket and comprises an electromagnetic valve, an air cylinder, a sliding block and an air pipe; the device comprises a support, a cylinder, a connecting rod, an electromagnetic valve, a gas pipe, a connecting rod, a solenoid valve and a gas pipe, wherein the cylinder is vertically and downwards arranged at the upper end of the support, the output end of the cylinder is provided with a piston, the piston is fixedly connected to the sliding rod, the connecting rod downwards extends into the multi-wire ionization chamber and is fixedly connected with the multi-wire ionization chamber, the electromagnetic valve is fixedly arranged at the end of the support, and the electromagnetic valve is connected with the cylinder through the gas pipe.
Description
Technical Field
The invention relates to the technical field of beam detection engineering of a medical cyclotron, in particular to a beam detection device for a transport line of a medical superconducting proton accelerator.
Background
Currently, in a cancer particle therapy system, after a particle beam is accelerated to a predetermined energy by passing through an accelerator, the particle beam can reach each therapy head only after being selected by a degrader, a collimator, a beam monitor and other devices in a beam transmission system.
The cyclotron has the characteristics of small volume, strong average flow, continuous beam and capability of accelerating various particles, the transportation line is responsible for leading out the beam from the accelerator and distributing the beam to the treatment end in high quality, and the beam detection device is used as the eye of the whole set of system and plays an important role in adjusting beam parameters in the debugging process of the proton treatment device and monitoring the beam quality in the treatment process.
Disclosure of Invention
The invention aims to provide a beam current detection device for a transport line of a medical superconducting proton accelerator, which plays an important role in adjusting beam current parameters in the debugging process of a proton treatment device and monitoring beam current quality in the treatment process, and can effectively avoid the damage of proton treatment system equipment or the serious damage to a patient caused by deviation of beam current parameters from theoretical values.
The purpose of the invention can be realized by the following technical scheme:
a detection device for a transport line beam of a medical superconducting proton accelerator comprises a multi-wire ionization chamber, a vacuum box, a support, an execution element, a position detection element and a control system;
the multi-wire ionization chamber is arranged in the vacuum box, the execution element is fixedly arranged on the bracket and comprises an electromagnetic valve, an air cylinder, a sliding block and an air pipe; the cylinder is vertically installed downwards on the upper end of the support, the piston is arranged at the output end of the cylinder, the piston is fixedly connected onto the sliding block, the connecting rod is fixedly installed at the lower end of the sliding block, the connecting rod extends downwards into the multi-wire ionization chamber and is fixedly connected with the multi-wire ionization chamber, the electromagnetic valve is fixedly installed at the end of the support and is connected with the cylinder through the air pipe, the electromagnetic valve is used for controlling the work of the cylinder, the position detection element is installed above the vacuum box and is used for detecting the stroke position of the cylinder, and the control system is used for controlling the operation of the detection.
As a further scheme of the invention: the electromagnetic valve is a two-position five-way electromagnetic valve, the cylinder is a rodless double-acting cylinder, when the electromagnetic valve is in a power-off state, an air inlet channel of the electromagnetic valve is communicated with a chamber on one side of the cylinder, which is provided with a piston, an air outlet channel of the electromagnetic valve is communicated with a chamber on the other side of the cylinder, and gas enters the cylinder to push the piston to move upwards; when the electromagnetic valve is powered, gas enters the other side chamber of the cylinder to push the piston to move downwards.
As a further scheme of the invention: the position detection element comprises a first limit switch and a second limit switch, the first limit switch and the second limit switch are respectively and fixedly installed on the lower portion and the upper portion of the cylinder, and the piston is located between the first limit switch and the second limit switch.
As a further scheme of the invention: the first limit switch and the second limit switch are contact type normally open switches and are used for mechanically limiting the piston and feeding back a limit signal.
As a further scheme of the invention: the periphery of the connecting rod is sleeved with a corrugated pipe, the upper end of the corrugated pipe is in sealing connection with the sliding block, and the lower end of the corrugated pipe is in sealing connection with the vacuum box.
As a further scheme of the invention: the vacuum box is provided with a flange interface and is connected with the vacuum pipe of the conveying line through the flange interface.
As a further scheme of the invention: the control system comprises a power supply system, a signal processing unit, an industrial switch and an upper computer, wherein the industrial switch is connected with the power supply system, the signal processing unit, the upper computer, a first limit switch and a second limit switch through data lines respectively, and safe signal acquisition and communication are realized.
As a further scheme of the invention: the using method of the beam current detection device specifically comprises the following steps:
the method comprises the following steps: the upper computer sends a detection opening command through Ethernet, the electromagnetic valve controls compressed air to enter the cylinder after power supply, and the piston is pushed to move downwards, so that the sliding block and the connecting rod are driven to move downwards, the multi-filament ionization chamber is located in a beam current to be detected area, the actual position of the first limit switch is fed back through the Ethernet, and the position of the multi-filament ionization chamber in the beam current is accurately adjusted;
step two: starting to detect beam parameters by the multi-filament ionization chamber;
step three: processing beam parameter signals acquired by the multi-wire ionization chamber through a signal processing unit, and feeding back the processed beam parameter signals to an upper computer through Ethernet;
step four: after detection is finished, the upper computer sends a detection finishing command through the Ethernet, after the electromagnetic valve is powered off, compressed air is controlled to enter the other cavity of the air cylinder, the air cylinder pushes the piston to move upwards, the multi-wire ionization chamber is made to exit beam current, and the actual position of the second limit switch is fed back through the Ethernet.
The invention has the beneficial effects that: the invention provides a beam detection device based on a multi-filament ionization chamber, which can obtain beam parameters in a target area at one time. The device plays an important role in adjusting beam parameters in the debugging process of the proton treatment device and monitoring beam quality in the treatment process, and can effectively avoid the damage of proton treatment system equipment or the serious injury to a patient caused by deviation of the beam parameters from theoretical values.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
Fig. 1 is an external structural view of a beam current detection apparatus according to the present invention;
FIG. 2 is a schematic diagram of the internal structure of the beam current detection apparatus according to the present invention;
FIG. 3 is a schematic diagram of the control system of the present invention;
fig. 4 is a flowchart of the beam parameter detection operation performed in the present invention.
In the figure: 1. a multi-filament ionization chamber; 2. a vacuum box; 3. a bellows; 4. an electromagnetic valve; 5. a cylinder; 6. a slider; 7. a piston; 8. a connecting rod; 9. an air tube; 10. a first limit switch; 11. a second limit switch; 12. a flange interface; 1301. a power supply system; 1302. a signal processing unit; 1303. an industrial switch; 1304. and (4) an upper computer.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a beam current detection device for a transport line of a superconducting proton medical accelerator includes a multi-filament ionization chamber 1, a vacuum box 2, a bracket, an actuator, a position detection element, and a control system;
the multi-wire ionization chamber 1 is arranged in the vacuum box 2, the executive component is fixedly arranged on the bracket and comprises an electromagnetic valve 4, a cylinder 5, a slide block 6 and an air pipe 9; the utility model discloses a pneumatic vacuum pump, including cylinder 5, connecting rod 4, solenoid valve 4, position detecting element, vacuum box 2, control system and control detection device, 5 vertical downward installations of cylinder are in the support upper end, and 5 output ends of cylinder are provided with piston 7, and piston 7 fixed connection is on slider 6, 6 lower extreme fixed mounting of slider have connecting rod 8, and connecting rod 8 stretches into in 1 the multifilament ionization chamber and with 1 fixed connection of multifilament ionization chamber downwards, and solenoid valve 4 fixed mounting is in the support end, and solenoid valve 4 links to each other with cylinder 5 through trachea 9, and solenoid valve 4 is used for controlling 5 work of cylinder, position detecting element installs in vacuum box 2 tops, and position detecting element is used for detecting.
The electromagnetic valve 4 is a two-position five-way electromagnetic valve, the air cylinder 5 is a rodless double-acting air cylinder, when the electromagnetic valve 4 is in a power-off state, an air inlet channel of the electromagnetic valve 4 is communicated with a chamber on one side of the air cylinder 5, which is provided with a piston 7, an air outlet channel of the electromagnetic valve 4 is communicated with a chamber on the other side of the air cylinder 5, and air enters the air cylinder 5 to push the piston 7 to move upwards; when the solenoid valve 4 is energized, gas enters the other side chamber of the cylinder 5, pushing the piston 7 downward.
The position detection element comprises a first limit switch 10 and a second limit switch 11, the first limit switch 10 and the second limit switch 11 are fixedly installed on the lower portion and the upper portion of the cylinder 5 respectively, the piston 7 is located between the first limit switch 10 and the second limit switch 11, and the first limit switch 10 and the second limit switch 11 are arranged at corresponding positions according to set stroke parameters of the cylinder 5.
The first limit switch 10 and the second limit switch 11 are contact type normally open switches, and are used for mechanically limiting the piston 7 and feeding back limit signals.
The periphery of the connecting rod 8 is sleeved with a corrugated pipe 3, the upper end of the corrugated pipe 3 is hermetically connected with the sliding block 6, and the lower end of the corrugated pipe is hermetically connected with the vacuum box 2.
The vacuum box 2 is provided with a flange interface 12, and the vacuum box 2 is connected with a transport line vacuum tube through the flange interface 12.
The control system comprises a power supply system 1301, a signal processing unit 1302, an industrial switch 1303 and an upper computer 1304, wherein the industrial switch 1303 is respectively connected with the power supply system 1301, the signal processing unit 1302, the upper computer 1304, the first limit switch 10 and the second limit switch 11 through data lines, and safe signal acquisition and communication are achieved.
In consideration of the absorption and scattering of the beam and the protection of electronic components, the multi-filament ionization chamber 1 is not always arranged in the beam and is immediately withdrawn after the detection is finished.
When the multi-wire ionization chamber is used, the upper computer 1304 sends a detection opening command through the Ethernet, the electromagnetic valve 4 is powered on and controls compressed air to enter the air cylinder 5 to push the piston 7 to move downwards, so that the sliding block 6 and the connecting rod 8 are driven to move downwards, the multi-wire ionization chamber 1 is positioned in a beam current detection area, the actual position of the first limit switch 10 is fed back through the Ethernet, and the position of the multi-wire ionization chamber 1 in the beam current is accurately adjusted; the multi-filament ionization chamber 1 starts to detect beam parameters; processing beam parameter signals acquired by the multi-wire ionization chamber 1 through a signal processing unit 1302, and feeding back the processed beam parameter signals to an upper computer 1304 through Ethernet; after detection is completed, the upper computer 1304 sends a detection ending command through the ethernet, the solenoid valve 4 is powered off to control compressed air to enter another chamber of the cylinder 5, the cylinder 5 pushes the piston 7 to move upwards, the multi-wire ionization chamber 1 is made to exit beam, and the actual position of the second limit switch 11 is fed back through the ethernet.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. A detection device for a transport line beam of a medical superconducting proton accelerator is characterized by comprising a multi-wire ionization chamber (1), a vacuum box (2), a support, an execution element, a position detection element and a control system;
the multi-wire ionization chamber (1) is arranged in the vacuum box (2), the executive component is fixedly arranged on the bracket and comprises an electromagnetic valve (4), a cylinder (5), a slide block (6) and an air pipe (9); cylinder (5) are vertical installs downwards in the support upper end, and cylinder (5) output is provided with piston (7), piston (7) fixed connection on slider (6), slider (6) lower extreme fixed mounting has connecting rod (8), and connecting rod (8) stretch into in multifilament ionization chamber (1) downwards and with multifilament ionization chamber (1) fixed connection, solenoid valve (4) fixed mounting is in the support end, and solenoid valve (4) link to each other with cylinder (5) through trachea (9), and solenoid valve (4) are used for controlling cylinder (5) work, position detection component installs in vacuum box (2) top, and position detection component is used for detecting cylinder (5) stroke position, and control system is used for controlling detection device operation.
2. The device for detecting the beam current of the transport line of the superconducting proton medical accelerator as claimed in claim 1, wherein the electromagnetic valve (4) is a two-position five-way electromagnetic valve, the cylinder (5) is a rodless double-acting cylinder, when the electromagnetic valve (4) is in a power-off state, an air inlet channel of the electromagnetic valve (4) is communicated with a chamber on one side of the cylinder (5) where the piston (7) is arranged, an air outlet channel of the electromagnetic valve (4) is communicated with a chamber on the other side of the cylinder (5), and gas enters the cylinder (5) to push the piston (7) to move upwards; when the electromagnetic valve (4) is powered, gas enters the other side chamber of the cylinder (5) to push the piston (7) to move downwards.
3. The device for detecting the beam current for the medical superconducting accelerator according to claim 1, wherein the position detection element comprises a first limit switch (10) and a second limit switch (11), the first limit switch (10) and the second limit switch (11) are respectively and fixedly installed at the lower part and the upper part of the cylinder (5), and the piston (7) is located between the first limit switch (10) and the second limit switch (11).
4. The device for detecting the beam current of the transport line of the superconducting proton medical accelerator as claimed in claim 3, wherein the first limit switch (10) and the second limit switch (11) are contact type normally open switches for mechanically limiting the piston (7) and feeding back a limit signal.
5. The device for detecting the beam current for the transport line of the superconducting proton medical accelerator as claimed in claim 1, wherein the corrugated tube (3) is sleeved on the periphery of the connecting rod (8), the upper end of the corrugated tube (3) is hermetically connected with the sliding block (6), and the lower end of the corrugated tube is hermetically connected with the vacuum box (2).
6. The device for detecting the beam current of the transport line of the superconducting proton medical accelerator as claimed in claim 1, wherein the vacuum box (2) is provided with a flange interface (12), and the vacuum box (2) is connected with the transport line vacuum tube through the flange interface (12).
7. The device for detecting the beam current of the transporting line of the superconducting proton medical accelerator according to claim 3, wherein the control system comprises a power supply system (1301), a signal processing unit (1302), an industrial switch (1303) and an upper computer (1304), and the industrial switch (1303) is respectively connected with the power supply system (1301), the signal processing unit (1302), the upper computer (1304), the first limit switch (10) and the second limit switch (11) through data lines, so that safe signal acquisition and communication are realized.
8. The beam current detection device for the transport line of the superconducting proton medical accelerator as claimed in claim 1, wherein the use method of the beam current detection device specifically comprises the following steps:
the method comprises the following steps: the upper computer (1304) sends a detection opening command through Ethernet, the electromagnetic valve (4) is powered on and then controls compressed air to enter the cylinder (5) to push the piston (7) to move downwards, so that the sliding block (6) and the connecting rod (8) are driven to move downwards, the multi-wire ionization chamber (1) is located in a beam current detection area, the actual position of the first limit switch (10) is fed back through the Ethernet, and the position of the multi-wire ionization chamber (1) in the beam current is accurately adjusted;
step two: the multi-filament ionization chamber (1) starts to detect beam parameters;
step three: processing beam parameter signals acquired by the multi-wire ionization chamber (1) through a signal processing unit (1302), and feeding back the processed beam parameter signals to an upper computer (1304) through Ethernet;
step four: after detection is finished, the upper computer (1304) sends a detection finishing command through the Ethernet, after the electromagnetic valve (4) is powered off, compressed air is controlled to enter the other cavity of the air cylinder (5), the air cylinder (5) pushes the piston (7) to move upwards, the multi-wire ionization chamber (1) is made to exit beam current, and the actual position of the second limit switch (11) is fed back through the Ethernet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011449217.2A CN112569485A (en) | 2020-12-09 | 2020-12-09 | Be used for medical accelerator transport line beam current detection device of superconductive proton |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011449217.2A CN112569485A (en) | 2020-12-09 | 2020-12-09 | Be used for medical accelerator transport line beam current detection device of superconductive proton |
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| CN112569485A true CN112569485A (en) | 2021-03-30 |
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| CN202011449217.2A Pending CN112569485A (en) | 2020-12-09 | 2020-12-09 | Be used for medical accelerator transport line beam current detection device of superconductive proton |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1857579U (en) * | 1961-03-09 | 1962-08-30 | Aeroterapica S R L | INHALER WITH DEVICE FOR IONIZATION OF GASES, IN PARTICULAR MOLECULAR OXYGEN. |
| CN105895479A (en) * | 2014-12-18 | 2016-08-24 | 北京中科信电子装备有限公司 | Ion beam detection device |
| CN106267590A (en) * | 2016-10-24 | 2017-01-04 | 合肥中科离子医学技术装备有限公司 | A kind of blocking vessel based on particle flux block device and its implementation |
| CN109091767A (en) * | 2018-09-14 | 2018-12-28 | 合肥中科离子医学技术装备有限公司 | One kind being used for particle dose safeguard protection interlock system |
| CN111282161A (en) * | 2020-02-28 | 2020-06-16 | 合肥中科离子医学技术装备有限公司 | Beam diagnosis system of proton treatment device |
| CN210894720U (en) * | 2019-09-29 | 2020-06-30 | 中国原子能科学研究院 | BNCT Faraday cylinder based on linear guide rail |
-
2020
- 2020-12-09 CN CN202011449217.2A patent/CN112569485A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1857579U (en) * | 1961-03-09 | 1962-08-30 | Aeroterapica S R L | INHALER WITH DEVICE FOR IONIZATION OF GASES, IN PARTICULAR MOLECULAR OXYGEN. |
| CN105895479A (en) * | 2014-12-18 | 2016-08-24 | 北京中科信电子装备有限公司 | Ion beam detection device |
| CN106267590A (en) * | 2016-10-24 | 2017-01-04 | 合肥中科离子医学技术装备有限公司 | A kind of blocking vessel based on particle flux block device and its implementation |
| CN109091767A (en) * | 2018-09-14 | 2018-12-28 | 合肥中科离子医学技术装备有限公司 | One kind being used for particle dose safeguard protection interlock system |
| CN210894720U (en) * | 2019-09-29 | 2020-06-30 | 中国原子能科学研究院 | BNCT Faraday cylinder based on linear guide rail |
| CN111282161A (en) * | 2020-02-28 | 2020-06-16 | 合肥中科离子医学技术装备有限公司 | Beam diagnosis system of proton treatment device |
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Application publication date: 20210330 |