Design and research of the discharge system of the pulse collimator

In order to study the key technology of pulse x-ray for breast cancer diagnosis in medical system, a pulse punctual X-ray source system is developed. The system is composed of pulse source, pulse x-ray tube and optical focusing lens. The pulse source is composed of Marx generator, spark gap switch, capacitor voltage divider and output section, and the compact and movable design is adopted; the pulse x-ray tube is designed with a This method can effectively improve the repetition rate of x-ray point source location, and adjust the material and distance of anode and cathode according to different driving voltage; the focusing lens adopts the design of poly-capillary Xray lens, and uses the total reflection mechanism of X-ray in the lens, which has a large flux focusing Characteristic. The experimental results show that when the output voltage of the pulse source is 165kv, the rise time is about 10ns, and the pulse width is about 100ns, the system can radiate a pulse width nanosecond X-ray with a diameter of about 100 µ m and an energy of about 15kev, and the image of the organism can be obtained by using this ray.