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The lay-out of ESSnuSB on the ESS site

The lay-out of ESSnuSB on the ESS site. Aerial view or the ESS site in June 2018. Artistic picture of the final site. Neutrons and neutrinos from the ESS linac. ν. p. n. p. H -. 5. 5. Then neutron target and detctors zone.

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The lay-out of ESSnuSB on the ESS site

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  1. The lay-out of ESSnuSB on the ESS site TIARA meeting in Lund Tord Ekelöf, Uppsala universitet

  2. Aerial view or the ESS site in June 2018 TIARA meeting in Lund Tord Ekelöf, Uppsala universitet

  3. Artistic picture of the final site TIARA meeting in Lund Tord Ekelöf, Uppsala universitet

  4. TIARA meeting in Lund Tord Ekelöf, Uppsala universitet

  5. Neutrons and neutrinos from the ESS linac ν p n p H- TIARA meeting in Lund Tord Ekelöf, Uppsala universitet 5 5

  6. Then neutron target and detctors zone TIARA meeting in Lund Tord Ekelöf, Uppsala universitet

  7. TIARA meeting in Lund Tord Ekelöf, Uppsala universitet

  8. TIARA meeting in Lund Tord Ekelöf, Uppsala universitet

  9. Conditions for underground construction on the ESS siteAt the ESS site the rock layer starts below about 10 m depth. ESS does not have legal permission to install under this depth level.It is also expensive to install in the rock layer.The rock is furthermore traversed in some places by so-called “dolorite dukes” containing ground water.ESSnuSB installations should therefore be made at the same depth as the ESS tunnel, i.e. at ca 6-8 m depth.The transfer tunnels and the accumulator will require an overburden of about 5 m, like for the linac tunnel, and the target station of about 10-15 m.These overburdens, on which there should be no personnel access for radioprotection reasons, will have to fit the overall access requirements on the ESS site.Quite generally, the ESSnuSB 5 MW target should not present bigger radiation protection problems that the 5 MW neutron target. TIARA meeting in Lund Tord Ekelöf, Uppsala universitet

  10. Required modifications for the upgrade of the ESS linac to 10 MW Study made by Frank Gerigk and Eric Montesinos CERN-ADD-NOTE-2016-0050 • The identified major modifications for the doubling of the beam power via a higher repetition rate and higher beam energy are (in no particular order): ‣ Three new electrical substations along the RF gallery. ‣ A third main electrical station, alongside the 2 existing ones. ‣ HV cable trenches and pulling of additional HV cables from the main station towards the new substations. New HV cables between the substations and the modulators in the RF gallery. ‣ Installation of 8 new cryo modules and associated RF stations to increase energy to 2.5 GeV. ‣ Change of klystron collectors, so that 60% more average power can be produced. If klystrons are at the end of their lifetime, they could be exchanged against more powerful models. ‣ Installation of additional capacitor chargers to allow faster pulsing of the modulators. This is only possible if the modular design developed in-house is adopted. ‣ Installation of a H- source + RFQ + MEBT + beam funnel alongside the existing protons source. ‣ Exchange trim magnets and associated power supplies against pulsed versions • The reviewers, Frank and Eric, did not find any show stoppers for the addition of 5 MW H- acceleration capability in the current state of the ESS linac.’ TIARA meeting in Lund Tord Ekelöf, Uppsala universitet

  11. The ESSnuSB Accumulator Ring fast injection kickers • A dispersion-free long straight section for injection DC bump SNS injection scheme TIARA meeting in Lund Tord Ekelöf, Uppsala universitet 11

  12. TIARA meeting in Lund Tord Ekelöf, Uppsala universitet

  13. The ESSnuSB target station Four-target/horn system to share the high proton beam power (5 MW) Downstream of the accumulator ring the beam pulses are distributed in sequence on the four targets Packed bed canister in symmetrical transverse flow configuration (titanium alloy spheres) Target inside the horn TIARA meeting in Lund Tord Ekelöf, Uppsala universitet 13 13

  14. ESSnuSB Near DetectorAlexander Burgman: A Neutrino Near Dector Design for ESSnuSB ESSnuSB participation in T2K Near Detector beam tests at the CERN Neutrino Platform TIARA meeting in Lund Tord Ekelöf, Uppsala universitet

  15. EU Design Study for ESSnuSB approved by EU in December 2017 for 2018-2021 • Title of Proposal: Discovery and measurement of leptonic CP violation using an intensive neutrino Super Beam generated with the exceptionally powerful ESS linear accelerator • Duration: 4 years • Total cost: 4.7 M€ • EU contribution: 3 M€ • 15 participating institutes from11 European countries including CERN and ESS • 6 Work Packages TIARA meeting in Lund Tord Ekelöf, Uppsala universitet 15

  16. Draft ESSnuSB Schedule Draft schedule:2018-2021 Design Study -> Conceptual Design Report2022-2024 Preparatory Phase -> Technical Design Report 2025-2026 Preconstruction phase2027-2033 Build-up of ESSnuSB2034-2035 Commissioning 2036-2045 Data taking -> CP angle and other measurementIn order to get EU financing 2021 for the Preparatory Phase convincing Design Study results need to be delivered already by autumn 2019 as input to the CERN Strategy Council preparation of its input to the ESFRI update in 2020. TIARA meeting in Lund Tord Ekelöf, Uppsala universitet 16

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