20 results about "Superconducting cyclotron" patented technology

The invention discloses a conduction cooling type superconducting isochronous cyclotron, and belongs to the technical field of superconducting isochronous cyclotrons. Comprising an accelerator main support, the accelerator main support is integrally of a base frame structure composed of a plurality of vertical supports, vertically-arranged hydraulic lifting systems are further fixedly installed on the side walls of each set of vertical supports, and a first magnet yoke is fixedly installed at the top of the accelerator main support; a refrigerating machine direct conduction cooling technology is adopted, a traditional liquid helium soaking cooling system is replaced, and the problem that a superconducting cyclotron depends on a complex liquid helium refrigeration unit and is redundant in structure is solved. While the magnetic field intensity is maintained, heavy parts such as a liquid helium pool, a recondenser and a multi-layer heat insulation pipeline are completely abandoned, so that the system height and the sealing complexity are remarkably reduced, and high operation and maintenance cost caused by dependence of liquid helium resources is also avoided.

The invention relates to the technical field of superconducting cyclotrons, and discloses a spiral resonant cavity for a superconducting cyclotron, which comprises an upper resonant cavity body and a lower resonant cavity body, and the upper resonant cavity body is positioned right above the lower resonant cavity body; through distributed waterway design and structural optimization, the cooling system can effectively process heat generated in the accelerator; efficient heat dissipation of the system is ensured through design means such as a multi-directional cooling channel, an oxygen-free copper brazing pipeline and a double-path independent cooling pipe, excessive accumulation in a high-temperature area is avoided, and meanwhile the stability of equipment can be kept in long-time operation; the structure of the single inner rod is convenient for voltage distribution adjustment, the structure is simple and compact, and the processing complexity and the manufacturing cost are greatly reduced; a core component solution with high reliability and low operation and maintenance cost is provided for the superconducting cyclotron, and application efficiency upgrading in the fields of medical treatment, scientific research and the like is promoted.

The invention discloses a thermal deformation pre-compensation method for a coreless superconducting cyclotron, and the method comprises the following steps: building a coreless high-temperature superconducting coil three-dimensional model which comprises a plurality of coils with different shapes and positions in the coreless high-temperature superconducting coil; carrying out a complete cooling process from 300K to 20K, and calculating form and position thermal deformation deviations of coils with different shapes and different positions in the model; pre-compensation calculation of the model is conducted through the form and position thermal deformation deviation; according to the pre-compensation amount at the low temperature of 20 K, the pre-compensation amount at the temperature of 300 K is reversely deduced, and the pre-compensation amount comprises a radial amplification coefficient and an axial amplification parameter; and iteration is repeated until the error between the 300K model with the pre-compensation amount and the design target is smaller than the error range. According to the method, the problems that in the prior art, the capability of accurately predicting the deformation behavior of the coil in the extreme temperature change process before the manufacturing stage is lacked, the positive design of pre-compensation cannot be actively carried out, and the basis of quantitative design is lacked are solved.

The application relates to the technical field of electrostatic deflection plate adjustment, and discloses an adjusting device for an electrostatic deflection plate of a superconducting cyclotron, which comprises an electrostatic deflection plate, servo motors, adjusting rods and speed reducers, the servo motors and the adjusting rods are two in number, and rotation support seats are symmetrically fixed on one side of the electrostatic deflection plate close to the adjusting rods, and the adjusting device further comprises an electrically isolated part and a cold creep part; the application innovatively adopts double-section peek insulation shafts and G10 insulation support plates in the structure, forms a whole high-voltage insulation link between a servo motor driving system and the high-voltage deflection plate, effectively avoids the risk of breakdown and electric leakage under high voltage, and realizes two-dimensional decoupling adjustment of the deflection plate under the conditions of vacuum sealing and electrical isolation through the cooperation of the electric cylinder and the rotation support structure in the mechanical structure, so that the beam debugging efficiency and the equipment operation stability are improved without opening the cavity and breaking the vacuum, and the scheme makes up for the deficiency of the prior art in the high-voltage insulation adjustment capability.

Described herein are compact particle therapy systems comprising a superconducting cyclotron for proton therapy applications. In some aspects, an electromagnetic beamline incorporating energy selection systems and pencil beam scanning magnets directs particle beams from the cyclotron to a treatment isocenter. A patient positioning device comprising a robotic positioner with six degrees of freedom supports patient alignment, t. The particle system can be ultra compact and able to be installed in existing photon linear accelerator (e.g., radiation therapy) vaults.

The invention relates to a compact superconducting cyclotron for isotope production. The high-current ion beam generator comprises a high-charge-state ECR ion source and a high-current proton source, the high-charge-state ECR ion source generates a milliampere-level high-charge-state heavy ion beam, and the high-current proton source generates a milliampere-level proton beam and a hydrogen molecule ion beam. An inlet of the injection beam line is connected with the high-charge-state ECR ion source and the high-current proton source. And a low-energy high-current ion mixed beam generated by the high-current ion beam generator is transmitted to the accelerator through the injection beam line. And the accelerator is connected with two symmetrical lead-out beam lines through a lead-out channel of the accelerator, and the two lead-out beam lines are positioned on the two sides of the accelerator so as to lead out a high-energy strong-current heavy ion beam and a high-energy strong-current proton beam. The advantages of the heavy ion beam and the proton beam are considered, and the medical TAT isotope is produced more efficiently and safely.

This invention discloses a conduction-cooled superconducting isochronous cyclotron accelerator, belonging to the technical field of superconducting isochronous cyclotron accelerators. It includes a main accelerator support, which is a base frame structure composed of several vertical supports. Vertically arranged hydraulic lifting systems are fixedly installed on the side walls of each set of vertical supports. A first magnetic yoke is fixedly installed on the top of the main accelerator support, and a second magnetic yoke is fixedly installed on the output end of the hydraulic lifting system. By employing direct conduction cooling technology using a cryostat to replace the traditional liquid helium immersion cooling system, the structural redundancy problem of superconducting cyclotron accelerators relying on complex liquid helium refrigeration units is solved. While maintaining the magnetic field strength, it completely eliminates bulky components such as liquid helium pools, recondensers, and multi-layered insulated pipelines. This not only significantly reduces the system height and sealing complexity but also avoids the high operation and maintenance costs caused by dependence on liquid helium resources.

The invention discloses a secondary harmonic shimming structure of a magnetic channel of an ultra-compact superconducting cyclotron. The secondary harmonic shimming structure is composed of an iron block at a specific position on the magnetic channel, a secondary harmonic correction structure on the inner side of the iron block and an aluminum shell wrapping the iron block and the secondary harmonic correction structure. The second harmonic shimming structure is used for offsetting second harmonics and second harmonic gradients on a magnetic channel of the ultra-compact superconducting cyclotron; the radial position of the second harmonic correction structure is used for offsetting the amplitude of the second harmonic; the angular position of the second harmonic correction structure is used for offsetting the second harmonic trigonometric function component. According to the invention, harmonic suppression and beam stability improvement are realized; the correction structure is radially arranged at the resonance position of 2vr = 2, so that the second harmonic amplitude offset effect is maximized; the trigonometric function component of the second harmonic is effectively counteracted by carefully selecting the angular position of the correction structure; by optimizing the volume distribution and the combination mode of the correction iron blocks, the second harmonic gradient is remarkably reduced, and the stability of harmonic compensation is ensured.

The application discloses a method for magnetic field padding of a full superconducting cyclotron based on a target first harmonic, and comprises the following steps: determining distribution requirements of the target first harmonic; determining superconducting coil groups for generating the target first harmonic; forming the superconducting coil groups by a group of coils; obtaining an adjustment scheme of each superconducting coil group and a total adjustment scheme number m; determining positions and numbers of radial measurement points and a total harmonic component number n; based on Fourier analysis, establishing a padding matrix A of the first harmonic based on a unit current adjustment amount, the total harmonic component n and the total adjustment scheme number m; based on Fourier analysis, establishing a target first harmonic amplitude matrix B based on the total harmonic component n; listing a padding equation B=AX, and solving X, wherein X is a matrix of superposition coefficients of the adjustment schemes; and the method can perform the magnetic field padding by a coil group as a unit, and a first harmonic formed by a group of coils can better express a distribution shape of the magnetic field, and can better replace a conventional strip padding method.

The invention relates to a compact superconducting cyclotron cavity for isotope production. Comprising a shell, a Dee plate, a head connecting block, a tail connecting block, a framework, an inner rod, a fixed capacitance tuner, a movable capacitance tuner and a coupler. The shell comprises a spiral shell upper plate and a spiral shell lower plate which are symmetrical up and down; the Dee plate is parallel to the shell upper plate and the shell lower plate, is positioned between the shell upper plate and the shell lower plate, and comprises a spiral upper Dee plate and a spiral lower Dee plate which are symmetrical up and down; the head connecting block is arranged at the head of the Dee plate and is connected with the upper Dee plate and the lower Dee plate; the tail connecting block is arranged at the tail part of the Dee plate and is connected with the upper Dee plate and the lower Dee plate; the framework is arranged between the upper Dee plate and the lower Dee plate so as to support the upper Dee plate and the lower Dee plate; the shell is connected with the Dee plate through an inner rod, and the inner rod is of a vertically symmetrical structure. The invention provides an efficient and stable cavity for the high-energy high-current cyclotron.

This invention relates to the field of accelerator magnet technology and discloses a magnet structure for a superconducting cyclotron accelerator, including a magnetic support base and a main magnet fixed on the magnetic support base. The main magnet has magnetic pole slots formed at the edges of its magnetic poles along a predetermined beam extraction trajectory. The cross-section of the magnetic pole slots is a U-shaped structure extending along the beam trajectory direction. Support shells are provided on the outer sides of the magnet and the magnetic support base. This invention, by forming magnetic pole slots of a specific shape at the edges of the main magnet's magnetic poles, not only effectively excites coherent radial oscillations of the beam, improving beam extraction efficiency, but also enables rapid beam focusing, improving beam quality. It reduces the number of magnetic channels to two. Simultaneously, it incorporates a shock-absorbing component and a support measuring element, utilizing hydraulic damping and spring buffering mechanisms to provide shock and vibration protection for the magnet structure. Furthermore, the multi-point adjustable positioning function of the support measuring element improves the convenience and flexibility of magnetic field measurement and reduces space waste.

The invention discloses an ultra-compact superconducting cyclotron high-frequency device capable of accelerating two kinds of particles. The device comprises a high-frequency upper D plate, a high-frequency lower D plate and a tail connecting plate between the high-frequency upper D plate and the high-frequency lower D plate. The accelerated two kinds of particles are alpha particles and H2 < + > particles; the tail curves of the high-frequency upper D plate and the high-frequency lower D plate of the high-frequency cavity capable of accelerating the two kinds of particles are arc lines instead of chamfers and straight lines; the tail connecting plate is not in through connection with all tail arcs of the high-frequency upper D plate and the high-frequency lower D plate, but is in a cut-off state at one end, tangent to the tails of the high-frequency upper D plate and the high-frequency lower D plate, of an alpha particle track; the tail curve shapes of the high-frequency upper D plate and the high-frequency lower D plate are improved, the originally designed'chamfer and straight line 'is changed into an optimized arc line, and the tail connecting plate is cut off, so that the physical interference between the alpha particle track and the tail of the high-frequency cavity is successfully avoided, and the smooth acceleration and extraction of the alpha particles are ensured.

The invention, which relates to the technical field of particle accelerator engineering and high-voltage insulation testing, discloses a high-voltage insulation detection apparatus for a superconductive cyclotron electrostatic deflection plate, comprising a C-type dipole iron, a vacuum box, an electrostatic deflection plate, a high-voltage vacuum electric feed-through, a high-voltage insulation platform, and a cooperative monitoring and data acquisition system. The collaborative monitoring and data acquisition system comprises a leakage current, vacuum degree, magnetic field and high-voltage state acquisition unit, an optical observation unit and a control processing unit; and the control processing unit performs unified time reference synchronous sampling on the multi-source signals, associatively stores image frames according to timestamps, and generates a discharge event mark based on leakage current abrupt change or discharge characteristics. A high-intensity magnetic field and high-vacuum composite working condition is reproduced before the whole machine is assembled, so that a test environment is closer to an actual operation state; through multi-source signal synchronous acquisition and event triggering associated storage, full-dimension traceable recording of a discharge process is realized. And the authenticity of test results and the data reliability are improved.

The invention relates to the technical field of automatic control systems, in particular to a direct-current high-voltage test control system, which is used for high-voltage insulation test of an electrostatic deflection plate of a superconducting cyclotron, and comprises a central control unit comprising a programmable logic controller and an upper computer which communicate with each other; the positioning subsystem is connected with the programmable logic controller and is used for supporting and adjusting the spatial position of the tested electrostatic deflection plate; the test environment subsystem is connected with the programmable logic controller; according to the invention, subsystems and modules of positioning, vacuum establishment, high voltage application, multi-source synchronous monitoring, data fusion, risk assessment and the like are coordinated in a unified manner through the central control unit, and original split manual operation is integrated into a coherent and automatic process. The test efficiency is greatly improved, the strict consistency and repeatability of test conditions are ensured, and the system can fundamentally improve the internal safety of the whole test process based on the comprehensive risk evaluated in real time.

This invention discloses a high-voltage insulation detection device for an electrostatic deflection plate in a superconducting cyclotron accelerator, relating to particle accelerator engineering and high-voltage insulation testing technology. The device includes: a C-type diode, a vacuum chamber, an electrostatic deflection plate, a high-voltage vacuum feedthrough, a high-voltage insulation platform, and a collaborative monitoring and data acquisition system. The collaborative monitoring and data acquisition system includes leakage current, vacuum level, magnetic field, and high-voltage status acquisition units, an optical observation unit, and a control and processing unit. The control and processing unit performs synchronous sampling of multi-source signals using a unified time reference, stores image frames in association according to timestamps, and generates discharge event markers based on leakage current mutations or discharge characteristics. This invention reproduces the combined strong magnetic field and high vacuum conditions before assembly, making the test environment closer to the actual operating state; through synchronous acquisition of multi-source signals and event-triggered association storage, it achieves full-dimensional traceability recording of the discharge process; improving the authenticity and reliability of test results.

The invention discloses a superconducting cyclotron PLC development system based on a minimum optional unit. The superconducting cyclotron PLC development system comprises a minimum subunit optional module based on an upper computer and a minimum subunit development module based on a lower computer. The minimum subunit development module based on the lower computer comprises a minimum subunit development module with adjustable parameters in an accelerator operation state and a minimum subunit development module with adjustable parameters in an accelerator aging state; the minimum subunit development module with the adjustable parameters is located at a leaf level or a tip level of a superconductive cyclotron PLC development system tree structure; through development and selection of minimum subunits, high decoupling and function independence of each subsystem of the accelerator are realized; according to the invention, the PLC control system of the superconducting cyclotron is decomposed into a series of independent and configurable minimum optional units, so that a flexible, configurable and easy-to-maintain control system structure is realized. Therefore, the development and maintenance cost is reduced.

The invention relates to the technical field of accelerator magnets, and discloses a magnet structure for a superconducting cyclotron, which comprises a magnetic support seat and a main magnet fixed on the magnetic support seat, and is characterized in that a magnetic pole groove is formed in the magnetic pole edge of the main magnet along a preset leading-out track of a beam; the section of each magnetic pole groove is of a U-shaped structure extending in the beam trajectory direction, and a supporting shell is arranged on the outer side of the magnet and the outer side of the magnetic supporting base. The magnetic pole grooves in specific shapes are formed in the magnetic pole edges of the main magnets, coherent radial oscillation of the beam is effectively excited, the beam extraction efficiency is improved, the beam can be quickly focused, the beam quality is improved, multiple magnetic channels can be reduced to two, and the vibration protection part and the supporting and testing piece are arranged, so that the detection accuracy is improved. A hydraulic damping and spring buffering mechanism is utilized to provide impact resistance and shock absorption protection effects for the magnet structure, and through the multi-point adjusting and positioning function of the supporting and measuring piece, the convenience and flexibility of magnetic field measurement are improved, and space waste is reduced.

The present application relates to a kind of superconducting cyclotron pad coil adjustment method, comprising the following steps: setting basic example;On the basis of basic example, integral sliding phase linear equation is established;Linear programming constraint is established: the minimum value λ of integral sliding phase upper limit is obtained;Whether integral sliding phase upper limit satisfies isohronous acceleration requirement is judged;The pad coil arrangement scheme that finally satisfies isohronous acceleration requirement is obtained.The present application is based on Biot-Savart integral method and multi-objective optimization, linear programming method, avoids complex finite element calculation and tedious step-by-step adjustment process, can make superconducting cyclotron pad coil system produce suitable isochronous field, and meet the minimum use of superconducting wire.

The invention relates to the technical field of electrostatic deflection plate adjustment, and discloses an adjusting device for an electrostatic deflection plate of a superconducting cyclotron, the electrostatic deflection plate, two servo motors, two adjusting rods and a speed reducer, the number of the servo motors and the number of the adjusting rods are two, and rotary supporting seats are symmetrically fixed to the side, close to the adjusting rods, of the electrostatic deflection plate. A cold climbing part; the double-section peek insulation shaft and the G10 insulation supporting plate are innovatively adopted in structure, a whole-course high-voltage insulation link from a servo motor driving system to the high-voltage deflection plate is formed, and the breakdown and electric leakage risks under high voltage are effectively avoided; according to the mechanical structure, the electric cylinder and the rotary supporting structure are arranged to be matched with the welding type vacuum corrugated pipe, two-dimensional decoupling adjustment of the deflection plate under the vacuum sealing and electrical isolation conditions is achieved, cavity opening and vacuum breaking are not needed, the beam debugging efficiency and the equipment operation stability are improved, and the working efficiency is improved. According to the scheme, the defect of the high-voltage insulation adjusting capability in the prior art is overcome.

The application provides a high-gain superconducting cyclotron capable of accelerating H + 2 and 12 C 6+ The high-gain superconducting cyclotron of ions comprises a double ion source system respectively installed on two sides below the accelerator, an injection line transmission system respectively installed below the accelerator and shared by the double ion source system, a spiral high-frequency cavity system for accelerating particles, which is respectively installed between magnetic poles on the upper and lower sides of the central plane of the accelerator, a 12C6+ ion deflection plate extraction system installed at the deflection plate exit of the central plane of the accelerator, and an H+2 stripping membrane extraction system installed at the stripping exit of the central plane of the accelerator. The application realizes the continuous adjustment of the proton beam and the high-energy 12C6+ ion beam in a large energy range on the same cyclotron for the first time, and achieves one machine with three uses. The application develops a superconducting cyclotron capable of accelerating H+2 and 12C6+ ions based on the injection of an external high-current ion source, which can realize the isochronous acceleration of H+2 and 12C6+ ions without adjusting any main technical parameters of the accelerator such as the magnet and the high frequency.