Status of the RF-driven H⁻ ion source for J-PARC linac
| Autor: | A. Takagi, Kiyoshi Ikegami, T. Shibata, Hidetomo Oguri, Akira Ueno, H. Asano, K. Ohkoshi |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Continuous operation Nuclear engineering Particle accelerator 01 natural sciences Ion source Linear particle accelerator 010305 fluids & plasmas law.invention Upgrade law Duty cycle 0103 physical sciences J-PARC Atomic physics 010306 general physics Instrumentation Beam (structure) |
| Zdroj: | The Review of scientific instruments. 87(2) |
| ISSN: | 1089-7623 |
| Popis: | For the upgrade of the Japan Proton Accelerator Research Complex linac beam current, a cesiated RF-driven negative hydrogen ion source was installed during the 2014 summer shutdown period, with subsequent operations commencing on September 29, 2014. The ion source has been successfully operating with a beam current and duty factor of 33 mA and 1.25% (500 μs and 25 Hz), respectively. The result of recent beam operation has demonstrated that the ion source is capable of continuous operation for approximately 1100 h. The spark rate at the beam extractor was observed to be at a frequency of less than once a day, which is an acceptable level for user operation. Although an antenna failure occurred during operation on October 26, 2014, no subsequent serious issues have occurred since then. |
| Databáze: | OpenAIRE |
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