Acceleration of large size deuterium pellets to high speeds using a small two-stage pneumatic gun
| Autor: | A. Frattolillo, C. Dommo, M. Capobianchi, G. Angelone, G. Ronci, D. K. Griffin, S. Migliori |
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| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | Review of Scientific Instruments. 70:2355-2364 |
| ISSN: | 1089-7623 0034-6748 |
| Popis: | The technology of two-stage pneumatic pellet injectors represents by far the most reliable way to perform deep plasma fueling, with pipe gun devices capable of routinely launching small or medium size (up to 4 mm) D2 pellets at speeds in excess of 3 km/s, using rather small two-stage guns. It is still an open question, however, if scaling of the pellet size to the International Thermonuclear Experimental Reactor relevant values (6–8 mm) will or will not require a somewhat proportional increase in the physical size of the two-stage gun. In order to investigate this question, an extensive study was carried out at ENEA Frascati, using numerical simulation codes. It clearly indicated that a “compact” two-stage gun may have the potential to accelerate large size pellets at speeds up to 5 km/s. A low cost experiment was also scheduled. A spare pipe-gun cryostat of the single-shot two-stage pneumatic injector, previously used for high-speed pellet fueling of the Frascati tokamak upgrade, was modified in order to... |
| Databáze: | OpenAIRE |
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