Record productions establish RF-driven sources as the standard for generating high-duty-factor, high-current H− beams for accelerators (Winner of the ICIS 2017 Brightness Award)
| Autor: | Robert F Welton, Baoxi Han, Martin P. Stockli |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Brightness Nuclear engineering 02 engineering and technology Injector 021001 nanoscience & nanotechnology 01 natural sciences Ion source law.invention law Duty cycle 0103 physical sciences Environmental science High current 0210 nano-technology Instrumentation Transport system Spallation Neutron Source Beam (structure) |
| Zdroj: | Review of Scientific Instruments. 89:052202 |
| ISSN: | 1089-7623 0034-6748 |
| Popis: | The Spallation Neutron Source operates reliably at 1.2 MW and will gradually ramp to 1.4 MW. This paper briefly recalls some of the struggles when the unprecedented project was started and ramped to 1 MW over a 3½ year period. This was challenging, especially for the H− ion source and the low-energy beam transport system, which make up the H− injector. It took several more years to push the H− injector to the 1.4 MW requirements, and even longer to reach close to 100% injector availability. An additional breakthrough was the carefully staged, successful extension of the H− source service cycle so that disruptive source changes became rare events. More than 7 A·h of extracted H− ions have been demonstrated with a single source without maintenance, more than twice the single-source quantity of ions produced by any other high-current H− accelerator facility. Achieving the 1.4 MW requirements with close to 100% availability and record-breaking source service cycles were the basis for the 2017 Brightness Award. |
| Databáze: | OpenAIRE |
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