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Report No.

Some error studies for interface management in the HEBT of the IFMIF accelerator

Shidara, Hiroyuki; Vermare, C.*; Sugimoto, Masayoshi; Toupet, S.*; Garin, P.*

The IFMIF accelerator system is based on two similar beam lines running in parallel. Each D$$^{+}$$ beam of 40 MeV/125 mA is transported by a High Energy Beam Transport (HEBT) line up to the liquid lithium target where neutrons will be produced. On the target, the specifications of the beam footprint mentioned a rectangular shape (20 cm $$times$$ 5 cm]) with a flat-topped homogenious current density profile and small energy spread. As a view point of the boundary condition management for the interface to the Lithium target, we demonstrate and simulate the beam after HEBT for clarifying the beam character on the beam robustness against the misalignment and mis-accelerated condition etc. regarding the effect to the Lithium target. The tolerance on beam axis off-set at HEBT inlet is estimated around $$pm$$0.2 mm. The energy acceleration dependence shows small footprint robustness in case of mis-accelerated situation but better robustness for over-accelerated condition.



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Category:Nuclear Science & Technology



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