F. Descamps
A5088829100- Astrophysics and Cosmic Phenomena
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Radiation Detection and Scintillator Technologies
- Gamma-ray bursts and supernovae
- Radio Astronomy Observations and Technology
- Particle Detector Development and Performance
- Arctic and Antarctic ice dynamics
- Atomic and Subatomic Physics Research
- Particle accelerators and beam dynamics
- Solar and Space Plasma Dynamics
- Noncommutative and Quantum Gravity Theories
- Scientific Research and Discoveries
- Advanced Thermodynamic Systems and Engines
- High-Energy Particle Collisions Research
- Acoustic Wave Phenomena Research
- Superconducting Materials and Applications
- Quantum Chromodynamics and Particle Interactions
- Earthquake Detection and Analysis
- Cryospheric studies and observations
- Nuclear Physics and Applications
- Soil Moisture and Remote Sensing
- Magneto-Optical Properties and Applications
- Quantum, superfluid, helium dynamics
Lawrence Berkeley National Laboratory
2015-2021
University of California, Berkeley
2016-2021
Ghent University
2006-2017
University of Mons
2016
Ghent University Hospital
2008-2013
University of Wisconsin–Madison
2012-2013
Humboldt-Universität zu Berlin
2011
University of Alabama
2011
University of Alaska Anchorage
2011
Providence College
2011
The IceCube Neutrino Observatory is a cubic-kilometer-scale high-energy neutrino detector built into the ice at South Pole. Construction of IceCube, largest to date, was completed in 2011 and enabled discovery astrophysical neutrinos. We describe here design, production, calibration digital optical module (DOM), cable systems, computing hardware, our methodology for drilling deployment. also online triggering data filtering systems that select candidate cosmic ray events analysis. Due...
SNO+ is a large liquid scintillator-based experiment located 2km underground at SNOLAB, Sudbury, Canada. It reuses the Sudbury Neutrino Observatory detector, consisting of 12m diameter acrylic vessel which will be filled with about 780 tonnes ultra-pure scintillator. Designed as multipurpose neutrino experiment, primary goal search for neutrinoless double-beta decay (0$\nu\beta\beta$) 130Te. In Phase I, detector loaded 0.3% natural tellurium, corresponding to nearly 800 kg 130Te, an expected...
A measurement of the atmospheric muon neutrino energy spectrum from 100 GeV to 400 TeV was performed using a data sample about 18 000 up-going events in IceCube. Boosted decision trees were used for event selection reject misreconstructed muons and obtain events. Background contamination final is less than 1%. This first neutrinos up TeV, fundamental understanding impact this background on astrophysical observations with The measured consistent predictions...
A search for muon neutrinos from neutralino annihilations in the Sun has been performed with IceCube 22-string neutrino detector using data collected 104.3 days of live time 2007. No excess over expected atmospheric background observed. Upper limits have obtained on annihilation rate captured neutralinos and converted to weakly interacting massive particle (WIMP) proton cross sections WIMP masses range 250-5000 GeV. These results are most stringent date Sun.
This paper describes the response of IceCube neutrino telescope located at geographic South Pole to outbursts MeV neutrinos from core collapse nearby massive stars. was completed in December 2010 forming a lattice 5160 photomultiplier tubes that monitor volume ~ 1 cubic kilometer deep Antarctic ice for particle induced photons. The designed detect with energies greater than 100 GeV. Owing subfreezing temperatures, dark noise rates are particularly low. Hence can also large numbers by...
We present the results of time-integrated searches for astrophysical neutrino sources in both northern and southern skies. Data were collected using partially completed IceCube detector 40-string configuration recorded between 2008 April 5 2009 May 20, totaling 375.5 days livetime. An unbinned maximum likelihood ratio method is used to search signals. The data sample contains 36,900 events: 14,121 from sky, mostly muons induced by atmospheric neutrinos, 22,779 high-energy muons. analysis...
We report the first observation of an anisotropy in arrival direction cosmic rays with energies multi TeV region Southern sky using data from IceCube detector. Between June 2007 and March 2008, partially-deployed detector was operated a configuration 1320 digital optical sensors distributed over 22 strings at depths between 1450 2450 meters inside Antarctic ice. is neutrino detector, but are dominated by large background ray muons. Therefore, suitable for high-statistics studies sky. The...
Keywords: neutrinos ; supernovae: general instrumentation: detectors errata addenda Reference EPFL-ARTICLE-198916doi:10.1051/0004-6361/201117810eView record in Web of Science Record created on 2014-05-19, modified 2017-05-12
Between 2009 May and 2010 May, the IceCube neutrino detector at South Pole recorded 32 billion muons generated in air showers produced by cosmic rays with a median energy of 20 TeV. With data set this size, it is possible to probe southern sky for per-mil anisotropy on all angular scales arrival direction distribution rays. Applying power spectrum analysis relative intensity map ray flux hemisphere, we show that not isotropic, but shows significant structure several scales. In addition...
We report on the observation of anisotropy in arrival direction distribution cosmic rays at PeV energies. The analysis is based data taken between 2009 and 2012 with IceTop air shower array south pole. IceTop, an integral part IceCube detector, sensitive to 100 TeV 1 EeV. With current size set, searches for 10−3 level can, first time, be extended divide set into two parts median energies 400 2 PeV, respectively. In low energy band, we observe a strong deficit angular about 30° amplitude (−...
IceCube has become the first neutrino telescope with a sensitivity below TeV flux predicted from gamma-ray bursts if are responsible for observed cosmic-ray above 10(18) eV. Two separate analyses using half-complete detector, one dedicated search neutrinos pγ interactions in prompt phase of burst fireball and other generic any emission these sources over wide range energies times, produced no evidence emission, excluding prevailing models at 90% confidence.
In this paper we report the first observation in Southern hemisphere of an energy dependence Galactic cosmic ray anisotropy up to a few hundred TeV. This measurement was performed using induced muons recorded by partially deployed IceCube observatory between May 2009 and 2010. The data include total 33$\times 10^{9}$ muon events with median angular resolution $\sim3^{\circ}$ degrees. A sky map relative intensity arrival direction over celestial is presented for energies 20 400 same...
The SNO+ experiment is located 2 km underground at SNOLAB in Sudbury, Canada. A low background search for neutrinoless double beta (0νββ) decay will be conducted using 780 tonnes of liquid scintillator loaded with 3.9 natural tellurium, corresponding to 1.3 130Te. This paper provides a general overview the experiment, including detector design, construction process plants, commissioning efforts, electronics upgrades, data acquisition systems, and calibration techniques. collaboration reusing...
The IceCube Neutrino Observatory is a 1 km$^{3}$ detector currently taking data at the South Pole. One of main strategies used to look for astrophysical neutrinos with search diffuse flux high-energy from unresolved sources. A hard energy spectrum isotropically distributed sources could manifest itself as detectable signal that may be differentiated atmospheric neutrino background by spectral measurement. This analysis uses collected in its half completed configuration which operated between...
A search for TeV-PeV muon neutrinos from unresolved sources was performed on AMANDA-II data collected between 2000 and 2003 with an equivalent live time of 807 days. This diffuse analysis sought to find extraterrestrial neutrino flux nonthermal components. The signal is expected have a harder spectrum than the atmospheric backgrounds. Since no excess events seen in over background, upper limit...
A search for an excess of muon neutrinos from dark matter annihilations in the Sun has been performed with AMANDA-II neutrino telescope using data collected 812 days live time between 2001 and 2006 149 40-string configuration IceCube during 2008 early 2009. No over expected atmospheric background observed. We combine these results previously published limits obtained taken 2007 to obtain a total 1065 days. provide upper limit at 90% confidence level on annihilation rate captured neutralinos...