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Neutrino Production Area Integration Studies Progress Meeting Summary

Updates and progress reports on the Target Building and Horn design, shielding improvements, dose rates, and power consumption calculations for the Neutrino Production Area integration studies. Detailed discussions on key engineering aspects.

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Neutrino Production Area Integration Studies Progress Meeting Summary

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  1. Progresses on SB facilityCENF meeting 2nd May 2013 M. Calviani, N. Baddams, A. Ferrari, F. Loprete, E. Nowak, J. Osborne, W. Kozlowska, A. Perillo-Marcone

  2. Target building (755+TCC26) update • Latest updated 18th April 2013 (link) • Slight reduction of the concrete shielding on top of the iron layer (still fixed at 2.5 m) • HS/pit1 building not optimized yet • Depends on the final location of the HS cooling station • Ground level above the DP at ~15 m from beam pipe • i.e. ~10 meters from concrete enclosure N. Baddams (GS/SE) CENF Technical Project meeting

  3. Target building (755+TCC26) update Slight slope for the access pit  brought down the vault by ~1 m Technical gallery from BA81 (?) – maze probably required Reduction of concrete shielding • Shaping of concrete blocks to reduce streaming • further reduction of concrete thickness could be envisaged Swap of cooling station room and morgue N. Baddams (GS/SE) CENF Technical Project meeting

  4. (Very) conceptal design for a geomembrane • See last CENF’s meeting for more details (link) • 3 layer protections • Different contacts ongoing for some material/thickness information • The whole secondary beam infrastructure should be “protected” N. Baddams (GS/SE) CENF Technical Project meeting

  5. Target engineering – preliminary designs • Beryllium target • 100 cm long, 6 (or 8) mm radius – He-cooled • Baseline fully inserted inside the horn except for the uppermost zone, with cooling inlet/outlet • Be (due to high Young modulus) will allow a one-piece rod • Graphite • Parallel development (design should be valid for both solution) A. Perillo-Marcone, F. Loprete, MC (EN/STI) CENF Technical Project meeting

  6. Update horn design & fluence • Last configuration shown by Alfredo (link) still the reference/baseline • Outer radius of horn#2 reduced to 70 cm • In both cases ~4 m long, ~2 m apart • Under investigation is the effect of a beam plug A. Ferrari, W. Kozlowska, MC CENF Technical Project meeting

  7. Horn#1 and #2 shape W. Kozlowska CENF Technical Project meeting

  8. FLUKA study margins between shielding • H*(10) with different margins between fixed and movable plug Fe blocks  increasing streaming toward the service pits gap Vertical profile of H*(10) above the He vessel cover 6x Vault surface gap Above service pit 3x E. Nowak CENF Technical Project meeting

  9. Dose rate above the DP DP concrete / moraine interface DP diameter ~5 mSv/h Surface (14.6 m from beam pipe) concrete DP wall / shielding 0.1 mSv/h (up to 5 mSv/h towards the end) E. Nowak CENF Technical Project meeting

  10. H*(10) update • Update on H*(10) around the installation with the latest CE layout • Effect of muon-dominated prompt dose relevant right after the HS • Possibility to use a higher density (~3.2 g/cm3) granite ~5 mSv/h • Assumed moraine density = 1.9 g/cm3 • Not so conservative – no pristine ground • 200 kW operation < 0.1 mSv/h ~1 mSv/h CENF Technical Project meeting

  11. Energy deposition table (update for CV) Target : ~2.5 kW  He Horn/Refl (only beam!!): ~4 kW  water Had. abs.: ~65 kW  water Fe shielding: 25 kW  water He vessel: 20 kW  water DP Fe wall: 45 kW  air DP concrete: 10 kW CENF Technical Project meeting

  12. Updated power consumptions See James talk + 20 kW service building above HS/pit1/2 +100 kW general infrastructure ~690 kW  ~1.1 MVA Total power needed CENF Technical Project meeting

  13. Conclusions • Starting from next week we’ll start more detailed integration studiesof the neutrino production area • Tuesday afternoon 14h – fine for everybody? • DGS/RP will follow-up on the radioprotection design of the installation CENF Technical Project meeting

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