Integrated Modeling of the Beam Formation and Extraction in the Linac4 Hydrogen Negative Ion Source

In order to make the predictive simulation tools for the extracted beam current and emittance in the Linac4 H− ion source, we have launched the development of the integrated model for the H− ion beam formation and extraction process. More specifically, our 3D KEIO-Beam Formation and eXtraction (3D KEIO-BFX) is coupled with the NINJA, IBSIMU and TRAVEL. The extracted H− ion beam current and co-extracted electron current obtained by the integrated model have shown reasonable agreement with the experiments. peerReviewed