23 research outputs found
Optical Scattering Lengths in Large Liquid-Scintillator Neutrino Detectors
For liquid-scintillator neutrino detectors of kiloton scale, the transparency
of the organic solvent is of central importance. The present paper reports on
laboratory measurements of the optical scattering lengths of the organic
solvents PXE, LAB, and Dodecane which are under discussion for next-generation
experiments like SNO+, Hanohano, or LENA. Results comprise the wavelength range
from 415 to 440nm. The contributions from Rayleigh and Mie scattering as well
as from absorption/re-emission processes are discussed. Based on the present
results, LAB seems to be the preferred solvent for a large-volume detector.Comment: 9 pages, 3 figures, accepted for publication by Rev. Scient. Instr
471 FEARâAVOIDANCEâAND ENDURANCEâRELATED RESPONSES TO PAIN 6 MONTHS AFTER LUMBAR DISC SURGERY: CORRELATIONS WITH THE CORTISOL AWAKENING RESPONSE
F223 DOES PAIN-RELATED ENDURANCE YIELD A STRESS-REDUCING EFFECT? HPA-AXIS ACTIVITY IN LBP PATIENTS AND HEALTHY CONTROLS
Low-energy Neutrino Astronomy in LENA
LENA (Low Energy Neutrino Astronomy) is a proposed next-generation neutrino detector based on 50 kilotons of liquid scintillator.
The low detection threshold, good energy resolution and excellent background rejection inherent to the liquid-scintillator detectors
make LENA a versatile observatory for low-energy neutrinos from astrophysical and terrestrial sources. In the framework of the
European LAGUNA-LBNO design study, LENA is also considered as far detector for a very-long baseline neutrino beam from
CERN to Pyhasalmi š (Finland).
The present contribution gives an overview LENAâs broad research program, highlighting the unique capabilities of liquid
scintillator for the detection of low-energy neutrinos from astrophysical sources. In particular, it will focus on the precision
measurement of the solar neutrino spectrum: The search for time modulations in the 7Be neutrino flux, the determination of
the electron neutrino survival probability in the low-energy region of the 8B spectrum and the favorable detection conditions for
neutrinos from the CNO fusion cycle.peerReviewe
Neutrino Flavor Sensitivity of Large Liquid Scintillator Detectors
Scintillator detectors are known for their good light yield, energy resolution, timing characteristics and pulse shape discrimination capabilities. These features make the next-generation liquid scintillation detector LENA[1] (Low Energy Neutrino Astronomy) the optimal choice for a wide range of astro-particle topics including supernova-, solar-, and geo neutrinos. In addition to the excellent calorimetric and timing properties, scintillartor detectors (LSDs) are also capable of topology reconstruction sufficient to discriminate with adequate efficiency between electron and muon neutrino induced charge current events and neutral current events in the GeV energy range. This feature makes LENA a competitive tool for the determination of the mass hierarchy (MH) with long baseline neutrino beams such as the proposed CN2PY beam (2288 km). This work summarizes the status of the current work on track reconstruction schemes and discusses the sensitivity limit for the neutrino mass hierarchy measurement with LENA.peerReviewe