Transient Temperature and Stress Analysis of an Electrode on 60 kV, 55 A, 2 s Ion Source

Transient Temperature and Stress Analysis of an Electrode on 60 kV, 55 A, 2 s Ion Source

The engineering design of 60 kV, 55 A, 2 s bucket ion source for HL-2A has been finished. The current design is based on an extraction-acceldecel extraction system that is composed of plasma electrode, acceleration electrode, deceleration electrode and grounded electrode. The primary and secondary particles due to beams ionization in each region of extraction system will hit the surface of electrode. The power loads on an electrode is estimated both theoretically and experimentally to be 1%-2% of the ion beam power, which may cause serious problems, such as thermal deformation followed by ion beam distortion and melting leading to water leaks. To ensure the mechanical reliability and no plastic deformation, it is important and necessary to analysis the temperature and stress distribution.