17 research outputs found
The focal plane instrumentation for the DUNE mission
DUNE (Dark Universe Explorer) is a proposed mission to measure parameters of
dark energy using weak gravitational lensing The particular challenges of both
optical and infrared focal planes and the DUNE baseline solution is discussed.
The DUNE visible Focal Plane Array (VFP) consists of 36 large format
red-sensitive CCDs, arranged in a 9x4 array together with the associated
mechanical support structure and electronics processing chains. Four additional
CCDs dedicated to attitude control measurements are located at the edge of the
array. All CCDs are 4096 pixel red-enhanced e2v CCD203-82 devices with square
12 m pixels, operating from 550-920nm. Combining four rows of CCDs
provides a total exposure time of 1500s. The VFP will be used in a closed-loop
system by the spacecraft, which operates in a drift scan mode, in order to
synchronize the scan and readout rates. The Near Infrared (NIR) FPA consists of
a 5 x 12 mosaic of 60 Hawaii 2RG detector arrays from Teledyne, NIR bandpass
filters for the wavelength bands Y, J, and H, the mechanical support structure,
and the detector readout and signal processing electronics. The FPA is operated
at a maximum temperature of 140 K for low dark current of 0.02e/s. Each
sensor chip assembly has 2048 x 2048 square pixels of 18 m size (0.15
arcsec), sensitive in the 0.8 to 1.7 m wavelength range. As the spacecraft
is scanning the sky, the image motion on the NIR FPA is stabilized by a
de-scanning mirror during the integration time of 300 s per detector. The total
integration time of 1500 seconds is split among the three NIR wavelengths
bands. DUNE has been proposed to ESA's Cosmic Vision program and has been
jointly selected with SPACE for an ESA Assessment Phase which has led to the
joint Euclid mission concept.Comment: 9 pages; To appear in Proc. of SPIE Astronomical Telescopes and
Instrumentation (23 - 28 June 2008, Marseille, France
Underground physics with DUNE
The Deep Underground Neutrino Experiment (DUNE) is a project to design, construct and operate a next-generation long-baseline neutrino detector with a liquid argon (LAr) target capable also of searching for proton decay and supernova neutrinos. It is a merger of previous efforts of the LBNE and LBNO collaborations, as well as other interested parties to pursue a broad programme with a staged 40-kt LAr detector at the Sanford Underground Research Facility (SURF) 1300 km from Fermilab. This programme includes studies of neutrino oscillations with a powerful neutrino beam from Fermilab, as well as proton decay and supernova neutrino burst searches. In this paper we will focus on the underground physics with DUNE
Summary of the DUNE Mission Concept
The Dark UNiverse Explorer (DUNE) is a wide-field imaging mission concept
whose primary goal is the study of dark energy and dark matter with
unprecedented precision. To this end, DUNE is optimised for weak gravitational
lensing, and also uses complementary cosmolo gical probes, such as baryonic
oscillations, the integrated Sachs-Wolf effect, a nd cluster counts. Immediate
additional goals concern the evolution of galaxies, to be studied with
groundbreaking statistics, the detailed structure of the Milky Way and nearby
galaxies, and the demographics of Earth-mass planets. DUNE is a medium class
mission consisting of a 1.2m telescope designed to carry out an all-sky survey
in one visible and three NIR bands (1deg field-of-view) which will form a
unique legacy for astronomy. DUNE has been selected jointly with SPACE for an
ESA Assessment phase which has led to the Euclid merged mission concept.Comment: 9 pages; To appear in Proc. of SPIE Astronomical Telescopes and
Instrumentation (23 - 28 June 2008, Marseille, France
Impact of cross-section uncertainties on supernova neutrino spectral parameter fitting in the Deep Underground Neutrino Experiment
A primary goal of the upcoming Deep Underground Neutrino Experiment (DUNE) is to measure the O(10) MeV neutrinos produced by a Galactic core-collapse supernova if one should occur during the lifetime of the experiment. The liquid-argon-based detectors planned for DUNE are expected to be uniquely sensitive to the νe component of the supernova flux, enabling a wide variety of physics and astrophysics measurements. A key requirement for a correct interpretation of these measurements is a good understanding of the energy-dependent total cross section σ(Eν) for charged-current νe absorption on argon. In the context of a simulated extraction of supernova νe spectral parameters from a toy analysis, we investigate the impact of σ(Eν) modeling uncertainties on DUNE's supernova neutrino physics sensitivity for the first time. We find that the currently large theoretical uncertainties on σ(Eν) must be substantially reduced before the νe flux parameters can be extracted reliably; in the absence of external constraints, a measurement of the integrated neutrino luminosity with less than 10% bias with DUNE requires σ(Eν) to be known to about 5%. The neutrino spectral shape parameters can be known to better than 10% for a 20% uncertainty on the cross-section scale, although they will be sensitive to uncertainties on the shape of σ(Eν). A direct measurement of low-energy νe-argon scattering would be invaluable for improving the theoretical precision to the needed level
Design, construction and operation of the ProtoDUNE-SP Liquid Argon TPC
ArtÃculo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, los autores pertenecientes a la UAM y el nombre del grupo de colaboración, si lo hubiereThe ProtoDUNE-SP detector is a single-phase liquid argon time projection chamber (LArTPC) that was constructed and operated in the CERN North Area at the end of the H4 beamline. This detector is a prototype for the first far detector module of the Deep Underground Neutrino Experiment (DUNE), which will be constructed at the Sandford Underground Research Facility (SURF) in Lead, South Dakota, U.S.A. The ProtoDUNE-SP detector incorporates full-size components as designed for DUNE and has an active volume of 7 × 6 × 7.2 m3. The H4 beam delivers incident particles with well-measured momenta and high-purity particle identification. ProtoDUNE-SP’s successful operation between 2018 and 2020 demonstrates the effectiveness of the single-phase far detector design. This paper describes the design, construction, assembly and operation of the detector component
Scintillation light detection in the 6-m drift-length ProtoDUNE Dual Phase liquid argon TPC
DUNEis a dual-site experiment for long-baseline
neutrino oscillation studies, neutrino astrophysics and nucleon
decay searches. ProtoDUNE Dual Phase (DP) is a
6×6×6m3 liquid argon time-projection-chamber (LArTPC)
that recorded cosmic-muon data at the CERN Neutrino Platform
in 2019–2020 as a prototype of the DUNE FarDetector.
Charged particles propagating through the LArTPC produce
ionization and scintillation light. The scintillation light signal
in these detectors can provide the trigger for non-beam
events. In addition, it adds precise timing capabilities and improves the calorimetry measurements. In ProtoDUNE-DP,
scintillation and electroluminescence light produced by cosmic
muons in the LArTPC is collected by photomultiplier
tubes placed up to 7m away from the ionizing track. In this
paper, the ProtoDUNE-DP photon detection system performance
is evaluated with a particular focus on the different
wavelength shifters, such as PEN and TPB, and the use of
Xe-doped LAr, considering its future use in giant LArTPCs.
The scintillation light production and propagation processes
are analyzed and a comparison of simulation to data is performed,
improving understanding of the liquid argon properties.CERN
CERN EP
CERN BE
CERN TE
CERN ENIT Departments for NP04/ProtoDUNE-SPFermi Research Alliance, LLC (FRA) DE-AC02-07CH11359Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ)Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio De Janeiro (FAPERJ)
Fundacao de Amparo a Pesquisa do Estado do Goias (FAPEG)
Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)Canada Foundation for Innovation
IPP, Canada
Natural Sciences and Engineering Research Council of Canada (NSERC)Ministry of Education, Youth & Sports - Czech Republic
Czech Republic GovernmentERDF, European Union
H2020-EU, European Union
MSCA, European UnionCentre National de la Recherche Scientifique (CNRS)
French Atomic Energy CommissionIstituto Nazionale di Fisica Nucleare (INFN)Portuguese Foundation for Science and Technology
European CommissionNational Research Foundation of KoreaCAM, Spain
La Caixa Foundation
Junta de Andalucia-FEDER, Spain
Spanish Government
Xunta de GaliciaSERI, Switzerland
Swiss National Science Foundation (SNSF)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK)Royal Society of London
UK Research & Innovation (UKRI)Science & Technology Facilities Council (STFC)
United States Department of Energy (DOE)
National Science Foundation (NSF)
National Energy Research Scientific Computing Center (NERSC), a U.S. Department of Energy Office of Science User Facility DE-AC02-05CH1123
Dynamical Dark Energy simulations: high accuracy Power Spectra at high redshift
Accurate predictions on non--linear power spectra, at various redshift z,
will be a basic tool to interpret cosmological data from next generation mass
probes, so obtaining key information on Dark Energy nature. This calls for high
precision simulations, covering the whole functional space of w(z) state
equations and taking also into account the admitted ranges of other
cosmological parameters; surely a difficult task. A procedure was however
suggested, able to match the spectra at z=0, up to k~3, hMpc^{-1}, in
cosmologies with an (almost) arbitrary w(z), by making recourse to the results
of N-body simulations with w = const. In this paper we extend such procedure to
high redshift and test our approach through a series of N-body gravitational
simulations of various models, including a model closely fitting WMAP5 and
complementary data. Our approach detects w= const. models, whose spectra meet
the requirement within 1% at z=0 and perform even better at higher redshift,
where they are close to a permil precision. Available Halofit expressions,
extended to (constant) w \neq -1 are unfortunately unsuitable to fit the
spectra of the physical models considered here. Their extension to cover the
desired range should be however feasible, and this will enable us to match
spectra from any DE state equation.Comment: method definitely improved in semplicity and efficacy,accepted for
publication on JCA
Searching for solar KDAR with DUNE
The observation of 236 MeV muon neutrinos from kaon-decay-at-rest (KDAR) originating in the core of the Sun would provide a unique signature of dark matter annihilation. Since excellent angle and energy reconstruction are necessary to detect this monoenergetic, directional neutrino flux, DUNE with its vast volume and reconstruction capabilities, is a promising candidate for a KDAR neutrino search. In this work, we evaluate the proposed KDAR neutrino search strategies by realistically modeling both neutrino-nucleus interactions and the response of DUNE. We find that, although reconstruction of the neutrino energy and direction is difficult with current techniques in the relevant energy range, the superb energy resolution, angular resolution, and particle identification offered by DUNE can still permit great signal/background discrimination. Moreover, there are non-standard scenarios in which searches at DUNE for KDAR in the Sun can probe dark matter interactions
Design, construction and operation of the ProtoDUNE-SP Liquid Argon TPC
The ProtoDUNE-SP detector is a single-phase liquid argon time projection chamber (LArTPC) that was constructed and operated in the CERN North Area at the end of the H4 beamline. This detector is a prototype for the first far detector module of the Deep Underground Neutrino Experiment (DUNE), which will be constructed at the Sandford Underground Research Facility (SURF) in Lead, South Dakota, U.S.A. The ProtoDUNE-SP detector incorporates full-size components as designed for DUNE and has an active volume of 7 × 6 × 7.2 m3. The H4 beam delivers incident particles with well-measured momenta and high-purity particle identification. ProtoDUNE-SP\u27s successful operation between 2018 and 2020 demonstrates the effectiveness of the single-phase far detector design. This paper describes the design, construction, assembly and operation of the detector components
Recommended from our members
Deep Underground Neutrino Experiment (DUNE), far detector technical design report, volume III: DUNE far detector technical coordination
The preponderance of matter over antimatter in the early universe, the dynamics of the supernovae that produced the heavy elements necessary for life, and whether protons eventually decay—these mysteries at the forefront of particle physics and astrophysics are key to understanding the early evolution of our universe, its current state, and its eventual fate. The Deep Underground Neutrino Experiment (DUNE) is an international world-class experiment dedicated to addressing these questions as it searches for leptonic charge-parity symmetry violation, stands ready to capture supernova neutrino bursts, and seeks to observe nucleon decay as a signature of a grand unified theory underlying the standard model. The DUNE far detector technical design report (TDR) describes the DUNE physics program and the technical designs of the single- and dual-phase DUNE liquid argon TPC far detector modules. Volume III of this TDR describes how the activities required to design, construct, fabricate, install, and commission the DUNE far detector modules are organized and managed. This volume details the organizational structures that will carry out and/or oversee the planned far detector activities safely, successfully, on time, and on budget. It presents overviews of the facilities, supporting infrastructure, and detectors for context, and it outlines the project-related functions and methodologies used by the DUNE technical coordination organization, focusing on the areas of integration engineering, technical reviews, quality assurance and control, and safety oversight. Because of its more advanced stage of development, functional examples presented in this volume focus primarily on the single-phase (SP) detector module