Used for the inspection and acceptance of the Y-source therapy machine after installation, and for connecting and calibrating the installation source with a dedicated therapy machine. Equipped with a ventilation well type ionization chamber. After the matching host is used for testing, the source activity is installed. During the testing, the well type ionization chamber is placed in the computer room, and the signal is transmitted to the host through the cable. The operator can operate the host and read the data in the operating room.

System parameters:

1. The system product meets the standard requirements: WS 262-2017 Quality Control Testing Specification for Post installed Gamma Source Close range Therapy;

2. Application scope: Detection and acceptance of rear mounted gamma source therapy machines.

3. Host range: (0.01~9999.9) cGy

4. Host dose (rate) range: 10Gy (min-1) to 300Gy (min-1)

5. Detector type: ventilation well ionization chamber

6. Purpose: Connect with a dedicated treatment host, calibrate and install the source

7. Calibration: 192Ir and other required nuclides

8. Measurement: Air specific kinetic energy intensity, apparent activity, irradiation intensity

9. Resolution: The digital display resolution is 0.5% of the given measurement range

10. Measurement volume: ≤ 120 cm3

11. Response (sensitivity): ≥ 135PA/MBq (192Ir source)

12. Reference point: 6.5cm from the bottom of the ionization chamber

13. Source response:<1% (every 1cm change in source response)

14. Polarization voltage: 240 V

15. Leakage: ≤ 50fA

16. Measurement repeatability: 0.1%

17. Long term stability: ≤ 1%/year

18. Rear mounted source adapter: Various sizes of adapters can be selected

19. Equipped with an extension cable of 20m

20. After using the supporting host for testing, the source activity is installed. During the testing, the well type ionization chamber is placed in the computer room, and the signal is transmitted to the host through cables. The operator can operate the host and read the data in the operating room.