Speaker
Description
It has been over a decade since J-PARC initiated negative hydrogen ion beam (H$^-$ beam) supply from its high-intensity radiofrequency-driven H$^-$ ion source in the autumn of 2014. It is noteworthy that there have been virtually no major incidents to date, with only three instances of operational shutdowns and replacement work due to damage to the antenna coils. The operation of the ion source equipped with the J-PARC-made antenna coil was initiated for J-PARC users in autumn 2025 subsequent to the execution of the various off-line tests and then receipt and successful completion of the J-PARC internal review. The ion source extracts the H$^-$ beams with a beam current of 62.5 mA to fulfil the requirement of 50-mA H$^-$ beam current at the end of the linac and a beam energy of 52.5 keV for appropriate injection into the RFQ. The presentation provides an account of the operational status of the J-PARC high-intensity, RF-driven cesiated negative hydrogen ion source from autumn 2025 to summer 2026.
| Email address | kshinto@post.j-parc.jp |
|---|---|
| Classification/Track | H- and D- sources for fusion, accelerators and other applications/ Accelerators |
| Visitor's Visa | no |
| Classification | H- and D- sources for fusion, accelerators and other applications |