Progress of the J-PARC cesiated rf-driven negative hydrogen ion source
- Dr. Katsuhiro SHINTO
- Dr. Katsuhiro SHINTO (J-PARC)
Operation of a cesiated rf-driven negative hydrogen ion (H$^-$) source was initiated in September 2014 in order to fulfill the requirements on beam current upgrade in J-PARC (Japan Proton Accelerator Research Complex). The required H$^-$ beam current from the ion source to the J-PARC accelerators has been successfully delivered without serious problems. In 2017-2018 campaign, continuous operation of the ion source for 2,080 hours from January to March 2018 was achieved with the beam current of 45 mA extracted from the source. We are conducting an endurance test of a J-PARC prototype antenna at a test bench. Approximately 1,000-hour operation with the prototype antenna was successfully performed. We will present the progress of the ion source as well as the prototype antenna test.