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Space Charge Limits in the Dae$\delta$alus DIC Compact Cyclotron

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arxiv 1512.09181 v1 pith:2TXZ2GUZ submitted 2015-12-30 physics.acc-ph

classification physics.acc-ph
keywords compactalusargumentcurrentcyclotrondeltalimitachieve
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abstract

The Dae$\delta$alus DIC compact cyclotron is proposed to achieve an extracted current of 5 mA of singly-charged hydrogen molecules, even though unlike other compact cyclotrons, the extraction is not by stripping. The authors of the proposal consistently use perveance as a scaling argument that such high current is possible. The argument is shown to be incorrect and a realistic limit is calculated. This limit is likely about 0.2 mA and certainly no higher than 0.5 mA.

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