L. Vagneron

Institut de Physique des 2 Infinis de Lyon

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A. Juillard

Institute of Nuclear Physics of Lyon

J. Gascon

Institute of Nuclear Physics of Lyon

M. De Jésus

Institute of Nuclear Physics of Lyon

L. Dumoulin

Laboratoire de Physique des 2 Infinis Irène Joliot-Curie

S. Marnieros

Laboratoire de Physique des 2 Infinis Irène Joliot-Curie

V. Sanglard

Institute of Nuclear Physics of Lyon

M. Gros

Institut de Recherche sur les Lois Fondamentales de l'Univers

J. Billard

Institute of Nuclear Physics of Lyon

L. Bergé

Laboratoire de Physique des 2 Infinis Irène Joliot-Curie

C. Augier

Institut de Physique des 2 Infinis de Lyon

Cooperative Institutions

Centre National de la Recherche Scientifique

339

Institut National de Physique Nucléaire et de Physique des Particules

215

Université Paris-Saclay

179

Université Claude Bernard Lyon 1

165

Commissariat à l'Énergie Atomique et aux Énergies Alternatives

164

CEA Paris-Saclay

148

Institut de Recherche sur les Lois Fondamentales de l'Univers

113

Institute of Nuclear Physics of Lyon

106

University of California, Berkeley

Université Paris-Sud

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Temperatures and excitation energies of hot nuclei in the reactions ofS32+Ag and

Physical Review C (1989)

R. Wada D. Fabris K. Hagel G. Nebbia Y. Lou

For the reactions of 30 MeV/nucleon O16 and S32 with Ag, singles and coincidence measurements have been made for heavy residues, fragments (3≤z≤14), and light charged particles (z≤2). Mass-velocity correlations for the residues and fragment-residue coincidences indicate that increasing residue velocities do correspond to increasing excitation energy. Excitation energies as high as 90% of those which would result from complete fusion are reached. The spectra of light particles detected in coincidence with residue groups having different average velocities are analyzed with a moving source fit. When recoil effects are properly taken into account, excellent fits to the data are obtained. From the energy spectra and multiplicities of particles emitted from a fusion-like source the initial temperatures of the primary composite nuclei are determined. The results suggest that a plateau temperature near 6.5 MeV is reached above excitation energies of 3 MeV/nucleon. The temperatures are compared to those resulting from various model calculations.Received 16 September 1988DOI:https://doi.org/10.1103/PhysRevC.39.497©1989 American Physical Society

Recoil

10.1103/physrevc.39.497

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Citations (138)

Precise measurement of 2ν2β decay of 100Mo with Li2MoO4 low temperature detectors: Preliminary results

AIP conference proceedings (2019)

E. Armengaud C. Augier A. S. Barabash F. Bellini A. Beno

The half-life of 100Mo relatively to the 2ν2β decay to the ground state of 100Ru was measured as T1/2 = (6.99±0.15) × 1018 yr with the help of enriched in 100Mo lithium molybdate scintillating bolometers in the EDELWEISS-III low background set-up at the Modane underground laboratory. This is the most accurate value of the 2ν2β half-life of 100Mo.

10.1063/1.5130966

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Citations (0)

Calibration of the EDELWEISS cryogenic heat-and-ionization germanium detectors for dark matter search

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment (2004)

O. Martineau A. Benoı̂t L. Bergé A. Broniatowski L. Chabert

Semiconductor detector

Cryogenics

WIMP

Recoil

Fiducial marker

10.1016/j.nima.2004.04.218

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Citations (33)

The EDELWEISS Experiment: Status and Outlook

arXiv (Cornell University) (2001)

J. Gascon A. Bonnevaux P. Charvin B. Chambon L. Vagneron

The EDELWEISS Dark Matter search uses low-temperature Ge detectors with heat and ionisation read- out to identify nuclear recoils induced by elastic collisions with WIMPs from the galactic halo. Results from the operation of 70 g and 320 g Ge detectors in the low-background environment of the Modane Underground Laboratory (LSM) are presented.

WIMP

Source

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Full Inter-Digitized Detectors For The EDELWEISS-II Dark Matter Search

AIP conference proceedings (2009)

S. Marnieros E. Armengaud C. Augier L. Bergé A. Benoît

A new design for the Ge bolometers of the EDELWEISS project is described here, based on innovative interleaved charge collection electrodes with high background discrimination capabilities. The measured surface event rejection is compatible with WIMP sensitivity levels down to 10−9 picobarn (pb). Use of interleaved electrodes on the overall surface of the Ge crystal, including its lateral surface, results to a high fiducial volume of the order of 80%. Electronic setup is fairly simple with a total of five JFET based read‐out amplifiers, one for the NTD‐Ge heat channel and four for the ionization signal. Fabrication process is quite simple and the design is easily scalable to higher mass bolometers (1 kg Ge crystal), making it very appealing for the future 1 ton scale EUREKA Dark Matter experiment.

WIMP

Nuclear electronics

10.1063/1.3292421

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Citations (4)

Interpretation of the Anomalous NaI Events

Springer eBooks (2001)

G. Chardin A. Benoı̂t L. Bergé A. Broniatowski M. Caussignac

WIMP

10.1007/978-3-662-04587-9_35

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Improved EDELWEISS-III sensitivity for low-mass WIMPs using a profile likelihood approach

The European Physical Journal C (2016)

L. Hehn E. Armengaud Q. Arnaud C. Augier A. Benoı̂t

We report on a dark matter search for a Weakly Interacting Massive Particle (WIMP) in the mass range $$m_{\chi } \in [4, 30]\,\mathrm{GeV/}c^2$$ with the EDELWEISS-III experiment. A 2D profile likelihood analysis is performed on data from eight selected detectors with the lowest energy thresholds leading to a combined fiducial exposure of 496 kg-days. External backgrounds from $$\gamma $$ - and $$\beta $$ -radiation, recoils from $$^{206}\mathrm{Pb}$$ and neutrons as well as detector intrinsic backgrounds were modelled from data outside the region of interest and constrained in the analysis. The basic data selection and most of the background models are the same as those used in a previously published analysis based on boosted decision trees (BDT) [1]. For the likelihood approach applied in the analysis presented here, a larger signal efficiency and a subtraction of the expected background lead to a higher sensitivity, especially for the lowest WIMP masses probed. No statistically significant signal was found and upper limits on the spin-independent WIMP-nucleon scattering cross section can be set with a hypothesis test based on the profile likelihood test statistics. The 90 % C.L. exclusion limit set for WIMPs with $$m_\chi = 4\,\mathrm{GeV/}c^2$$ is $$1.6 \times 10^{-39}\,\mathrm{cm^2}$$ , which is an improvement of a factor of seven with respect to the BDT-based analysis. For WIMP masses above $$15\,\mathrm{GeV/}c^2$$ the exclusion limits found with both analyses are in good agreement.

WIMP

10.1140/epjc/s10052-016-4388-y

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Citations (77)

CUPID pre-CDR

HAL (Le Centre pour la Communication Scientifique Directe) (2019)

W.R. Armstrong C. Chang K. Hafidi M. Lisovenko V. Novosad

Source

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EDELWEISS Read-out Electronics and Future Prospects

Journal of Low Temperature Physics (2012)

B. Censier A. Benoı̂t Guillaume A. Brès Florence Charlieu J. Gascon

10.1007/s10909-012-0568-9

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Citations (10)

Pulse shape discrimination in CUPID-Mo using principal component analysis

Journal of Instrumentation (2021)

R.G. Huang E. Armengaud C. Augier A. S. Barabash F. Bellini

Abstract CUPID-Mo is a cryogenic detector array designed to search for neutrinoless double-beta decay (0νββ) of 100 Mo. It uses 20 scintillating 100 Mo-enriched Li 2 MoO 4 bolometers instrumented with Ge light detectors to perform active suppression of α backgrounds, drastically reducing the expected background in the 0νββ signal region. As a result, pileup events and small detector instabilities that mimic normal signals become non-negligible potential backgrounds. These types of events can in principle be eliminated based on their signal shapes, which are different from those of regular bolometric pulses. We show that a purely data-driven principal component analysis based approach is able to filter out these anomalous events, without the aid of detector response simulations.

SIGNAL (programming language)

Component (thermodynamics)

10.1088/1748-0221/16/03/p03032

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Citations (4)