450 research outputs found
Neutrino Oscillation Search at MiniBooNE
This article reports the status of a oscillation
search in MiniBooNE (Booster Neutrino Experiment) experiment. If an appearance
signal is observed, it will imply Physics Beyond the Standard Model such as the
existence of light sterile neutrino.Comment: 6 pages, 4 figures. Plenary talk at the Neutrino Oscillation Workshop
(NOW2006), September 2006, to be published in Nucl.Phys. B (Proc. Suppl.
Review of Reactor Antineutrino Experiments
As discussed elsewhere, the measurement of a non-zero value for
would open up a wide range of possibilities to explore CP-violation and the
mass hierarchy. Experimental methods to measure currently the unknown mixing
angle include accelerator searches for the appearance
and precise measurements of reactor antineutrino disappearance. The reactor
antineutrino experiments are designed to search for a non-vanishing mixing
angle with unprecedented sensitivity. This document describes
current reactor antineutrino experiments and synergy between accelerator
searches for the appearance and precise measurements of reactor
antineutrino disappearance.Comment: 8 pages, 2 figures, Review talk given at NuFact 2011, XIIIth
InternationalWorkshop on Neutrino Factories, Super beams and Beta beams,
CERN/UNIGE, Geneva, Switzerland, August 1-6, 201
MiniBooNE Oscillation Results 2011
The MiniBooNE neutrino oscillation search experiment at Fermilab has recently
updated results from a search for
oscillations, using a data sample corresponding to
protons on target in anti-neutrino mode. This high statistics result represent
an increase in statistics of 52% compared to result published in 2010. An
excess of 57.7 28.5 events is observed in the energy range 200 MeV 3000 MeV. The data favor LSND-like
oscillations over a background only hypothesis at 91.1% confidence level in the
energy range 475 3000 MeV.Comment: 4 pages, 6 figures, talk given at NuFact 2011, XIIIth
InternationalWorkshop on Neutrino Factories, Super beams and Beta beams,
CERN/UNIGE, Geneva, Switzerland, August 1-6, 201
Novel Technique for Ultra-sensitive Determination of Trace Elements in Organic Scintillators
A technique based on neutron activation has been developed for an extremely
high sensitivity analysis of trace elements in organic materials. Organic
materials are sealed in plastic or high purity quartz and irradiated at the
HFIR and MITR. The most volatile materials such as liquid scintillator (LS) are
first preconcentrated by clean vacuum evaporation. Activities of interest are
separated from side activities by acid digestion and ion exchange. The
technique has been applied to study the liquid scintillator used in the KamLAND
neutrino experiment. Detection limits of <2.4X10**-15 g 40K/g LS, <5.5X10**-15
g Th/g LS, and <8X10**-15 g U/g LS have been achieved.Comment: 16 pages, 3 figures, accepted for publication in Nuclear Instruments
and Methods
Reactor Simulation for Antineutrino Experiments using DRAGON and MURE
Rising interest in nuclear reactors as a source of antineutrinos for
experiments motivates validated, fast, and accessible simulations to predict
reactor fission rates. Here we present results from the DRAGON and MURE
simulation codes and compare them to other industry standards for reactor core
modeling. We use published data from the Takahama-3 reactor to evaluate the
quality of these simulations against the independently measured fuel isotopic
composition. The propagation of the uncertainty in the reactor operating
parameters to the resulting antineutrino flux predictions is also discussed.Comment: This version has increased discussion of uncertaintie
Development of Wireless Techniques in Data and Power Transmission - Application for Particle Physics Detectors
Wireless techniques have developed extremely fast over the last decade and
using them for data and power transmission in particle physics detectors is not
science- fiction any more. During the last years several research groups have
independently thought of making it a reality. Wireless techniques became a
mature field for research and new developments might have impact on future
particle physics experiments. The Instrumentation Frontier was set up as a part
of the SnowMass 2013 Community Summer Study [1] to examine the instrumentation
R&D for the particle physics research over the coming decades: {\guillemotleft}
To succeed we need to make technical and scientific innovation a priority in
the field {\guillemotright}. Wireless data transmission was identified as one
of the innovations that could revolutionize the transmission of data out of the
detector. Power delivery was another challenge mentioned in the same report. We
propose a collaboration to identify the specific needs of different projects
that might benefit from wireless techniques. The objective is to provide a
common platform for research and development in order to optimize effectiveness
and cost, with the aim of designing and testing wireless demonstrators for
large instrumentation systems
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