Summary of the working group C on accelerator systems

Machida, Shinji*; Huang, H.*; Saha, P. K.   

This is the summary of all presentations and discussions of the working group C on the accelerator systems as a role of convener of this working group at the 68th ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams, named HB2023 held at CERN during October 9-13, 2023. The talks were selected keeping 100% geographical balance and covering all parts of circular accelerators at present and future ones. The presentations were chaired sharing by 3 conveners and a report was presented by me at the final day. This summary gives an overview of the accelerator systems of mostly all high-intensity accelerators worldwide presently operating, upgrade strategies and new techniques for next generation accelerators.