J. Maeda
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View article: First Measurement of Neutrino Emissions from Spent Nuclear Fuel by the Double Chooz Experiment
First Measurement of Neutrino Emissions from Spent Nuclear Fuel by the Double Chooz Experiment Open
Neutrino emission from nuclear reactors provides real-time insights into reactor power and fuel evolution, with potential applications in monitoring and nuclear safeguards. Following reactor shutdown, a low-intensity flux of ``residual neu…
View article: Development of the firmware logic validation system using the FPGA accelerator
Development of the firmware logic validation system using the FPGA accelerator Open
Validating FPGA firmware logic used in particle physics is becoming increasingly difficult as the implementation logic scales and becomes more complex with the expansion of FPGA resources. In order to address this issue efficiently, we hav…
View article: Search for signatures of sterile neutrinos with Double Chooz
Search for signatures of sterile neutrinos with Double Chooz Open
We present a search for signatures of neutrino mixing of electron anti-neutrinos with additional hypothetical sterile neutrino flavors using the Double Chooz experiment. The search is based on data from 5 years of operation of Double Chooz…
View article: ESTIMATING METHOD FOR THE CONCENTRATION OF COARSER PARTICLES AT A DEBRIS FLOW’S FRONT CONSIDERING A FALLING OF SMALLER PARTICLES IN THE FLOW’S INTERIOR
ESTIMATING METHOD FOR THE CONCENTRATION OF COARSER PARTICLES AT A DEBRIS FLOW’S FRONT CONSIDERING A FALLING OF SMALLER PARTICLES IN THE FLOW’S INTERIOR Open
多様な粒度構成をもつ土石流に対応した先頭部大粒子集積機構を検証するため,混合する砂礫径,混合割合,流下距離および水路勾配を変化させた条件下で水路実験を行った.その結果,流下距離が長く,実験砂の初期体積平均径が大きく,水路勾配が緩いほど,土石流先頭部の大粒子集積が顕著になる傾向が見られた.この結果から,多様な粒度構成条件に対応した当該現象の主要機構は,「小粒子の流動層下層への落ち込み」であると考えられた.これらの機構を土石流一次元計算モデルに組み込み,土石流先頭部の大粒子集積…
View article: First Double Chooz $\\mathbf{\\theta_{13}}$ Measurement via Total Neutron Capture Detection
First Double Chooz $\\mathbf{\\theta_{13}}$ Measurement via Total Neutron Capture Detection Open
The establishment of the neutrino oscillations phenomenon as a solution to both solar and atmospheric neutrino anomalies had two consequences: a new oscillation mode, labelled $\\mathbf{\\theta_{13}}$, and the possibility to observe CP vio…
View article: Yields and production rates of cosmogenic <sup>9</sup>Li and <sup>8</sup>He measured with the Double Chooz near and far detectors
Yields and production rates of cosmogenic <sup>9</sup>Li and <sup>8</sup>He measured with the Double Chooz near and far detectors Open
The yields and production rates of the radioisotopes $^9$Li and $^8$He created by cosmic muon spallation on $^{12}$C, have been measured by the two detectors of the Double Chooz experiment. The identical detectors are located at separate s…
View article: Yields and production rates of $^9$Li and $^8$He measured with the Double Chooz near and far detectors
Yields and production rates of $^9$Li and $^8$He measured with the Double Chooz near and far detectors Open
The yields and production rates of the radioisotopes $^9$Li and $^8$He created by cosmic muon spallation on $^{12}$C have been measured by the Double Chooz experiment. Comparing the data to a detailed simulation of the $^9$Li and $^8$He de…
View article: Novel event classification based on spectral analysis of scintillation waveforms in Double Chooz
Novel event classification based on spectral analysis of scintillation waveforms in Double Chooz Open
Liquid scintillators are a common choice for neutrino physics experiments, but their capabilities to perform background rejection by scintillation pulse shape discrimination is generally limited in large detectors. This paper describes a n…
View article: Searches for exotic resonances with top tagging
Searches for exotic resonances with top tagging Open
Several models of physics beyond the Standard Model contain preferential couplings to top quarks. We present an overview of searches for new physics containing boosted top quarks in the final state, using proton-proton collision data colle…
View article: Cosmic-muon characterization and annual modulation measurement with Double Chooz detectors
Cosmic-muon characterization and annual modulation measurement with Double Chooz detectors Open
A study on cosmic muons has been performed for the two identical near and far\nneutrino detectors of the Double Chooz experiment, placed at $\\sim$120 and\n$\\sim$300 m.w.e. underground respectively, including the corresponding\nsimulation…
View article: Characterization of the spontaneous light emission of the PMTs used in the Double Chooz experiment
Characterization of the spontaneous light emission of the PMTs used in the Double Chooz experiment Open
During the commissioning of the first of the two detectors of the Double Chooz experiment, an unexpected and dominant background caused by the emission of light inside the optical volume has been observed. A specific study of the ensemble …
View article: Muon capture on light isotopes measured with the Double Chooz detector
Muon capture on light isotopes measured with the Double Chooz detector Open
Using the Double Chooz detector, designed to measure the neutrino mixing angle θ13, the products of μ- capture on C12,C13,N14, and O16 have been measured. Over a period of 489.5 days, 2.3×106 stopping cosmic μ- have been collected, of whic…
View article: The ATLAS Trigger System: Ready for Run-2
The ATLAS Trigger System: Ready for Run-2 Open
The ATLAS trigger has been successfully collecting collision data during the first run of the LHC between 2009-2013 at a centre-of-mass energy between 900 GeV and 8 TeV. The trigger system consists of a hardware Level-1 (L1) and a software…