Hefei Cas Ion Medical and Technical Devices Co., Ltd

Chinese Academy of Sciences

China Tiesiju Civil Engineering Group Co., Ltd.

Anhui China Railway Engineering Technology Co., Ltd

Yonghua Chen

Kaizhong Ding

Yuntao Song

Junjun Li

Hansheng Feng

Jianghua Wei

Jinxing Zheng

Gen Chen

Yanfang Bi

Rui Hu

Chunlong Zou

Junsong Shen

Qingxi Yang

Xu Han

Jun Li

Lei Li

Ming Li

Peng Liu

Xuebing Peng

Shuangsong Du

Xianhu Zeng

Wuquan Zhang

Xin Mao

Jian Zhou

Feng Jiang

Yucheng Wu

Huahui Zhang

Xiaoyang Pan

Lexing Hu

Changjian Luo

Sumei Liu

Pengyu Wang

Kai Yao

Jinghai Lu

Jiaxing Ji

Xufeng Liu

Mingzhun Lei

YunTao Song

Lu Liu

Benchun Ling

Zhengwen Xu

Manfen Han

Bo Zhi

Jian Ge

Kai Zhou

Kun Pei

Zhong Wang

Xinyu Chen

A solid target system for the radionuclide preparation, including a cassette, an ejection sub-system, a laser radar positioning sub-system, a cooling sub-system and a control cabinet. The cassette includes a solid target component for the nuclide preparation and a shielding box. The ejection sub-system is configured to eject the cassette to a recovery hole after the nuclide preparation is completed. The laser radar positioning sub-system is arranged above the ejection sub-system, and is electrically connected to the control cabinet. Both sides of the cassette are each provided with the cooling sub-system for cooling down the solid target component. The control cabinet is electrically connected to a direct-current servo motor for controlling an operating state thereof.

Solid target system for radionuclide preparation

A detection apparatus for a railway bridge duct concrete compactness includes a probe and a vibration hammer, where a bearing plate is disposed below the probe and the vibration hammer, and a transportation structure is disposed below the bearing plate while a girder is disposed above the bearing plate; a tail end of the probe is provided with a reciprocating screw and an outer cylinder, the outer cylinder is in drive connection with the transportation structure, a winding rod for controlling the position of the vibration hammer is disposed below the vibration hammer, and photoelectric switches are disposed on one side of the probe.

Detection apparatus and detection system for railway bridge duct concrete compactness

Patient sitting equipment for radiotherapy, including an installation platform, a treatment couch assembly, a support and adjustment assembly and a 3D imaging assembly. The treatment couch assembly is configured to fix a patient. The support and adjustment assembly is configured to adjust a position of the treatment couch assembly with respect to the installation platform. The 3D imaging assembly includes a column assembly and a 3D imaging device. The column assembly is arranged at the installation platform, and extends along the vertical direction. The 3D imaging device is movably arranged at the column assembly, and is corresponding to the treatment couch assembly in a horizontal projection direction. The 3D imaging device is configured to scan the patient.

Patient sitting equipment for radiotherapy

A superconducting magnet system and a cyclotron using the same. The superconducting magnet system includes a cryogenic device, a superconducting device and a protecting module. The cryogenic device includes a refrigerating machine and a cryogenic container assembly. The cryogenic container assembly includes a first container end, a connecting tube and a second container end. The first container end is communicated with the second container end through the connecting tube. The superconducting device includes a superconducting coil arranged in the first container end and immersed in a liquid or gaseous cooling medium. The protecting module is connected to the superconducting coil and is configured to protect the superconducting coil if the superconducting coil suffers a quench.

Superconducting magnet system for cyclotron and cyclotron comprising ihe same

Disclosed a quench protection device of a superconducting magnet system, including a superconducting coil set; the superconducting coil set comprises two superconducting coils () which are symmetrical arranged, and each of the two superconducting coils () is connected in parallel with a protection diode (); the superconducting coils and the protection diode are connected with the power supply via a conductive wire; the superconducting coils set are connected in parallel with a quench protection unit (), a change-over switch () is arranged on a circuit of the two superconducting coils, the protection diode, and the power supply, and the change-over switch () is connected with an external resistor via a conductive wire (). The change-over switch of the quench protection device connects the superconducting coil and an external resistance, which realizes the quench protection of the superconducting coil.

Quench protection device of superconducting magnet system and working method thereof

Disclosed is an adjustable transmission device for measuring transverse parameters of beams, including: a CCD transmission support assembly, an external transmission rod, the CCD transmission support assembly is connected with a support block, and the support block is provided with the slotted set screw with flat point, and is connected with a limit block via a first fastener; a snap ring is arranged in the rear of the external transmission and is matched with a base; the base is connected with the CCD fixed plate via a second fastener. The external transmission rod is provided with a second groove for mounting the first retaining ring, and a side of the first retaining ring is sequentially provided with a vacuum observation window, a second retaining ring, a head assembly, a retaining sleeve and a screwing mechanism.

Adjustable transmission device for measuring transverse parameters of beams

A proton therapy system based on a compact superconducting cyclotron, including: a superconducting cyclotron system, an energy selection system, a beam transport system, a fixed therapy room subsystem and a rotating frame therapy subsystem; a fixed-energy proton beam extracted from a superconducting cyclotron of the superconducting cyclotron system is adjusted into a continuous and adjustable proton beam of 70 MeV to 200 MeV by the energy selection system, thus realizing a longitudinal adjustment for a proton range during treating a tumor, and the continuous and adjustable proton beam is respectively transmitted to the fixed therapy room subsystem and the rotating frame therapy subsystem by the beam transport system. The cooperative control of the superconducting cyclotron system, the energy selection system, the beam transport system and the therapy head realizes the transverse expansion of proton beams, thus realizing intensity modulated radiation therapy for the tumor.

Proton therapy system based on compact superconducting cyclotron

Disclosed is a beam energy dispersion adjusting mechanism for superconducting proton cyclotron. The adjusting mechanism includes a vacuum cavity, bases are symmetrically mounted on outer walls of four faces of the vacuum cavity in horizontal and vertical directions, an electric cylinder and a transmission mechanism are mounted on each of the four bases, a jaws block and a position fixing plate are correspondingly provided on an inner wall of the vacuum cavity at each face. The transmission mechanism includes an oil-free sleeve, a moving connecting rod onto which the position fixing plate is fixed, a corrugated pipe, and an electric cylinder connecting block whose both ends are screwed with the moving connecting rod and the electric cylinder, the jaws block is fixedly connected with the position fixing plate. The disclosure utilizes the electric cylinder to drive the jaws block to complete specified linear displacement, and satisfies back-end beam quality requirements.

Beam energy dispersion adjusting mechanism for superconducting proton cyclotron

The invention discloses a method for adjusting particle orbit alignment by using a first harmonic in a cyclotron, including the following steps: generating a correcting magnetic field through eight coils symmetrically about the middle plane; arranging the positions of the coils and the currents applied, so that they can generate a first harmonic of which the amplitude and phase are arbitrarily adjustable; according to the actual eccentricity of the particle orbit, adjusting the magnitude and direction of the currents applied to the coils, and optimizing the alignment of the particle trajectory. By controlling an external DC power source of the accelerator and combining the real-time feedback of the beam detection of the accelerator, the invention may perform real-time adjustment during the debugging and operation of the accelerator, with high feasibility and operability; compared with traditional methods, the invention may achieve real-time adjustment during the debugging and operation of the accelerator.

Method for adjusting particle orbit alignment by using first harmonic in cyclotron

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Anhui, China

Yonghua Chen