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MOPPA026 |
The Deflecting Cavities (Wobbler) Assembling for High-Energy Heavy Ion Hollow Beam Formation | |
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Funding: "Rosatom", contract #N.4e.45.90.1065 The study of high-energy-density in matter (HEDM) is one of the most challenging and interesting topics in modern physics. An intense ion beam can be used to achieve low-entropy compression of a sample material like hydrogen or ice that is enclosed in a heavy cylindrical tamper shell. Such a target will be driven by a hollow beam with an annular focal spot. This experiment was called LAPLAS (Laboratory Planetary Sciences) at the FAIR project*. In the experiment, it will be possible to achieve physical conditions that exist in the interior of giant planets, Jupiter and Saturn. Another goal of the LAPLAS experiment will be to study the problem of hydrogen metallization. In order to make a hollow beam with an annular focal spot it has been proposed to rotate the ion beam around the longitudinal axis with a high frequency using a radio frequency deflecting system (Wobbler). The Wobbler consisted of two four-cell H-mode deflecting cavities with a resonant frequency of 297 MHz is under development. The deflecting cavities of the Wobbler system were manufactured and assembled. The measured electro-dynamics characteristics of the cavities as well as methods used for the cavities frequency tuning are presented. * High Energy Density Matter Research Using Intense Heavy Ion Beams at the Future FAIR Facility at Darmstadt, N A Tahir et. al., IFSA2007 |
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