Reconstruction of GeV Neutrino Events in LENA

Möllenberg, R.; Feilitzsch, F. von; Göger‐Neff, M.; Hellgartner, D.; Lewke, T.; Meindl, Q.; Oberauer, L.; Peltoniemi, J.; Potzel, W.; Tippmann, M.; Winter, J.; Wurm, M.

doi:10.1063/1.3644294

Cited by 4 publications

(3 citation statements)

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“…It has good energy resolution, a very low energy threshold, and high light yield. Its use as a target for a superbeam experiment in the 100 MeV-few GeV energy range has been recently proposed [24,50,51] and is currently under intense study.…”

Section: B the Detectorsmentioning

confidence: 99%

A comparative study of long-baseline superbeams within LAGUNA for large $θ_{13}$

Coloma¹,

Pascoli²,

Li³

2012

Preprint

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The Daya Bay and RENO experiments have recently observed a non-zero θ 13 at more than 5σ CL. This has important consequences for future neutrino oscillation experiments. We analyze these within the LAGUNA design study which considers seven possible locations for a European neutrino observatory for proton decay, neutrino, and astroparticle physics. The megaton-scale detector would be an ideal target for a CERN-based neutrino beam with baselines ranging from 130 km to 2300 km. We perform a detailed study to assess the physics reach of the three detector options -a 440 kton water Čerenkov, a 100 kton liquid argon and a 50 kton liquid scintillator detector -at each of the possible locations, taking into account the recent measurement of θ 13 . We study the impact of the beam properties and detector performances on the sensitivity to CPviolation and the mass hierarchy. We find that a liquid argon or water Čerenkov detector can make a 3σ discovery of CP violation for 60% − 70% of the parameter space for any of the baselines under consideration, although the results for the liquid argon detector placed at 130 km are slightly worse and only 40% − 50% is achieved in this case. The performance of the liquid scintillator detector is affected by its level of neutral-current background at all baselines. A 3σ determination of the mass hierarchy is possible for all values of δ, for the values of θ 13 favoured at 3σ by Daya Bay and RENO, for almost all setups with L 650 km.

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Section: B the Detectorsmentioning

confidence: 99%

A comparative study of long-baseline superbeams within LAGUNA for large $θ_{13}$

Coloma¹,

Pascoli²,

Li³

2012

Preprint

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“…Information about the Liquid Scintillator (LS) detector has been obtained from Refs. [12][13][14]. The rejection capability for the Neutral-Current (NC) events at the LS detector is currently under study.…”

Section: Introduction and Simulation Detailsmentioning

confidence: 99%

Long-baseline super-beam experiments in Europe within LAGUNA

Coloma

Pascoli

2013

J. Phys.: Conf. Ser.

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We explore the physics reach of several possible configurations for a Super-Beam experiment in Europe, focusing on the possibilities of discovering θ13, CP violation in the leptonic sector and the ordering of neutrino mass eigenstates. We consider the three different detector technologies: WaterČerenkov, Liquid Argon and Liquid Scintillator, and seven possible sites in Europe which would be able to host such a detector underground. The distances to these sites from CERN, where the beam would be originated, go from 130 km to 2300 km. The neutrino flux is optimized in each case as to match the first oscillation peak for each of the baselines under consideration. We also study the impact of several experimental factors in the performance of each detector technology. These include the influence of the spectral information, the rejection efficiencies for the neutral-current backgrounds, the ratio between running times in neutrino and antineutrino modes and the systematic uncertainties on the signal and backgrounds, among others. Contribution to NUFACT 11, XIIIth International Workshop on Neutrino Factories, Super beams and Beta beams, 1-6 August 2011, CERN and University of Geneva (Submitted to IOP conference series).

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“…Although these are totally-active scintillator detectors (TASD), these single-volume detectors are conceptually different from segmented scintillator detectors. The performance of a conventional large volume liquid scintillator detector for high-energy neutrinos (1-5 GeV) has been studied recently [387][388][389][390] and a more detailed study is in preparation [391]. It was found that, if the detector, particularly the read-out electronics, is well designed, one can reconstruct the simplest events using photon-arrival times in phototubes.…”

Section: Large-volume Liquid Scintillator Detectorsmentioning

confidence: 99%