Medical proton heavy ion accelerator treatment system
The heavy ion beam provided by medical heavy ion accelerators is mainly used in the treatment of cancer with heavy ion beams. The special mechanism of interaction between heavy ion beams and substances makes it have a series of obvious advantages in tumor treatment: the precision of heavy ion beam treatment is as high as (millimeter level); The dosage is relatively concentrated, the irradiation treatment time is short, and the therapeutic effect is high; Minimal damage to healthy tissues surrounding the tumor; Heavy ion beam therapy can achieve real-time monitoring, making it easy to control the irradiation position and dose.
The above advantages make the therapeutic effect of heavy ion beams comparable to surgical knives, achieving therapeutic effects that are difficult to achieve with ordinary ionizing radiation (here ordinary ionizing radiation refers to x, r, and electron beams). Therefore, heavy ion beams are known as the most ideal radiation therapy in the 21st century.
As one of the core components of the medical heavy ion accelerator (HIMM) system, the power supply system mainly supplies power to various magnetic excitation and non-magnetic equipment of HIMM's dedicated medical accelerator, providing the required excitation current and high voltage, and generating magnetic and electric fields that meet the requirements.
Nuclear Magnetic Resonance MRI
To ensure the accuracy of the output current of the power supply, the scanning power supply of the medical heavy ion accelerator (HIMM) adopts a hysteresis (closed loop) control strategy to limit the tracking error within a very small error range. Therefore, a current sensor with very high stability and accuracy is required for closed loop control.
The accelerator power supply is the only energy source for the main magnet, and the performance of its power system is mainly affected by feedback accuracy and stability, regulator performance, and reference stability. The feedback accuracy depends on the accuracy of the DCCT (DC current sensor), and the development of medical heavy ion accelerators (HIMM) largely depends on the development and improvement of implementation methods and the accuracy and stability of each subsystem.
Flagsensor current sensor can measure a current range of 50A-10000A, with high accuracy, small error, stable performance, and a wide working temperature range. It is applied in the power supply system of various low-energy, medium energy, and high-energy medical accelerators, which can meet the treatment needs and accuracy requirements to the maximum extent and significantly improve the effectiveness of HIMM treatment.