Speaker
Description
The China Institute of Atomic Energy (CIAE) has de-veloped a multipurpose, high-intensity 18 MeV/1 mA cyclotron (CYCIAE-18) for Boron Neutron Capture Therapy (BNCT) applications and neutron imaging studies. The degree of beam homogenisation directly affects the uniformity of the dose distribution and the imaging contrast. In order to confirm that the pre-experimental condi-tions have been met, it is necessary to develop a wire-scanning system for beam diagnostics, which is used to measure the beam cross-section and calculate the degree of homogenisation. This system enables the synchronous, high-precision acquisition of position and current signals and uses a Python-based host computer interface for re-mote control of the wire-scanning device. Meanwhile, its modular design integrates each signal processing unit into a compact chassis, effectively improving the system's maintainability and expandability. Testing has shown that the system can measure the beam cross-section in 1–2 seconds and achieve a homogenisation measurement result of >90% between peaks. The system has achieved cross-section measurement of the CYCIAE-18 beam, providing a key diagnostic tool for beam commissioning, optimisation, and operation.
