| 1. |
- Cederkall, Joakim, et al.
(författare)
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The ESSνSB project
- 2020
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Ingår i: European Physical Society Conference on High Energy Physics, EPS-HEP2019. - Trieste, Italy : Sissa Medialab srl. ; EPS-HEP2019
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Konferensbidrag (refereegranskat)abstract
- The ESS nu SB project aims to produce a neutrino beam of unique intensity for a long-baseline oscillation measurement of CP-violation in the leptonic sector. The project, supported within the H2020 framework programme of the European Union, is currently in a conceptual design study phase, and work is ongoing within the project to develop viable solutions for the upgrade of the linear accelerator of the European Spallation Source (ESS), for the associated ring accumulator and the high-power target stations, as well as to establish solutions for the near and far detectors. The unique strength of the project lies in the capability to produce a neutrino beam that is intense enough to place the far detector at the second oscillation maximum. Such a placement will reduce the sensitivity of the experiment to systematic errors, which, due to the recently established value of the neutrino mixing angle theta(13), is now known to limit the measurement precision at the first oscillation maximum. In this paper we outline the basic components of the project and discuss the status of the ongoing conceptual design study.
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| 2. |
- Ekelöf, Tord, et al.
(författare)
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The design and performance of the ESS Neutrino Super Beam project ESSvSB
- 2019
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Ingår i: Neutrino Oscillation Workshop, NOW2018. - Trieste, Italy : Sissa Medialab srl.
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Konferensbidrag (refereegranskat)abstract
- The European Spallation Source linear proton accelerator will have a uniquely high power of 5 MW. The modifications and additions to the accelerator that are required to enable the generation of a uniquely intense neutrino Super Beam ESSvSB for measurement of leptonic CP violation using a large water Cherenkov detector are described. ESSvSB is complementary to the other two proposed Super Beam experiments Hyper-K and DUNE by the fact that the resulting high neutrino beam intensity allows to place the neutrino detector at the second oscillation maximum. The simulated performance of the ESSvSB experiment is compared to the other two experiments under the assumption of the same systematic errors in all three experiments. The performance of ESSvSB for CP violation precision measurements is found to be highly competitive.
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| 3. |
- Wildner, E., et al.
(författare)
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The Opportunity Offered by the ESSnuSB Project to Exploit the Larger Leptonic CP Violation Signal at the Second Oscillation Maximum and the Requirements of This Project on the ESS Accelerator Complex
- 2016
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Ingår i: Advances in High Energy Physics. - : Hindawi Publishing Corporation. - 1687-7357 .- 1687-7365.
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Tidskriftsartikel (refereegranskat)abstract
- The European Spallation Source (ESS), currently under construction in Lund, Sweden, is a research center that will provide, by 2023, the world's most powerful neutron source. The average power of the proton linac will be 5 MW. Pulsing this linac at higher frequency will make it possible to raise the average total beam power to 10 MW to produce, in parallel with the spallation neutron production, a very intense neutrino Super Beam of about 0.4 GeV mean neutrino energy. This will allow searching for leptonic CP violation at the second oscillation maximum where the sensitivity is about 3 times higher than at the first. The ESS neutrino Super Beam, ESSnuSB operated with a 2.0 GeV linac proton beam, together with a large undergroundWater Cherenkov detector located at 540 km from Lund, will make it possible to discover leptonic CP violation at 5 sigma. significance level in 56% (65% for an upgrade to 2.5 GeV beam energy) of the leptonic CP-violating phase range after 10 years of data taking, assuming a 5% systematic error in the neutrino flux and 10% in the neutrino cross section. The paper presents the outstanding physics reach possible for CP violation with ESSnuSB obtainable under these assumptions for the systematic errors. It also describes the upgrade of the ESS accelerator complex required for ESSnuSB.
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