ESSNUSB Document 2273-v1

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ESSnuSB-777419/ESSnuSBplus-101094628

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Evaluation of the baseline design of the target station

Document #:
ESSNUSB-doc-2273-v1
Document type:
Milestone
Submitted by:
Eric Baussan
Updated by:
Eric Baussan
Document Created:
30 Jun 2026, 23:02
Contents Revised:
30 Jun 2026, 23:02
Metadata Revised:
30 Jun 2026, 23:02
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Abstract:
This milestone report presents an updated evaluation of the ESSνSB+ target station baseline
design, covering the hadronic collector, the Large Aperture Dipole Magnet (LADM) and power
deposition studies. The horn geometry was already optimised via a genetic-algorithm-based
deep-learning approach to maximise pion yield at the dipole level. To protect the LADM coils,
whose wires are equipped with PEEK material for electrical insulation, a 40 cm tungsten shield
was introduced. FLUKA simulations shows that this shielding allows to keep the cumulative
dose below the 10 MGy PEEK limit over the duration of the experiment. Finite element simulations
confirm that the shielding does not significantly distort the magnetic field, which remains
uniform within 2% in the collimator region. In conclusion, the modifications brought in the simulation increase the lifetime of the target station and allow to run the experiment over 10 years.
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