9 research outputs found
Simultaneous Multiwavelength Observations of V404 Cygni during its 2015 June Outburst Decay Strengthen the Case for an Extremely Energetic Jet-base
First cryogenic tests on BINGO innovations
International audienceNeutrinoless double-beta decay () is a hypothetical rare nuclear transition. Its observation would provide an important insight about the nature of neutrinos (Dirac or Majorana particle) demonstrating that the lepton number is not conserved. BINGO (Bi-Isotope Next Generation Observatory) aims to set the technological grounds for future bolometric experiments. It is based on a dual heat-light readout, i.e. a main scintillating absorber embedding the double-beta decay isotope accompanied by a cryogenic light detector. BINGO will study two of the most promising isotopes: Mo embedded in LiMoO (LMO) crystals and Te embedded in TeO. BINGO technology will reduce dramatically the background in the region of interest, thus boosting the discovery sensitivity of . The proposed solutions will have a high impact on next-generation bolometric tonne-scale experiments, like CUPID. In this contribution, we present the results obtained during the first tests performed in the framework of BINGO R&D
First cryogenic tests on BINGO innovations
International audienceNeutrinoless double-beta decay () is a hypothetical rare nuclear transition. Its observation would provide an important insight about the nature of neutrinos (Dirac or Majorana particle) demonstrating that the lepton number is not conserved. BINGO (Bi-Isotope Next Generation Observatory) aims to set the technological grounds for future bolometric experiments. It is based on a dual heat-light readout, i.e. a main scintillating absorber embedding the double-beta decay isotope accompanied by a cryogenic light detector. BINGO will study two of the most promising isotopes: Mo embedded in LiMoO (LMO) crystals and Te embedded in TeO. BINGO technology will reduce dramatically the background in the region of interest, thus boosting the discovery sensitivity of . The proposed solutions will have a high impact on next-generation bolometric tonne-scale experiments, like CUPID. In this contribution, we present the results obtained during the first tests performed in the framework of BINGO R&D
BINGO innovative assembly for background reduction in bolometric experiments
International audienceBINGO is a project aiming to set the grounds for large-scale bolometric neutrinoless double-beta-decay experiments capable of investigating the effective Majorana neutrino mass at a few meV level. It focuses on developing innovative technologies to achieve a very low background index, of the order of counts/(keV kg yr) in the region of interest. The BINGO demonstrator, called MINI-BINGO, will be composed of LiMoO and TeO crystals coupled to bolometric light detectors designed to investigate the promising double-beta-decay isotopes Mo and Te. This will allow us to reject a significant background in bolometers caused by surface contamination from -active radionuclides by means of light yield selection. In addition, BINGO introduces new methods to mitigate other sources of background, such as surface radioactive contamination, external radioactivity, and pile-up due to random coincidence of background events. This paper focuses on the description of an innovative assembly designed to reduce the passive materials in line of sight of the detectors, which is expected to be a dominant source of background in next-generation bolometric experiments. We present the performance of two prototype modules -- housing four LiMoO crystals in total -- operated in the Canfranc underground laboratory in Spain within a facility developed for the CROSS double-beta-decay experiment
Missing mass spectroscopy of He and He by (d,He) reaction
International audienceWe present the first missing mass spectrum of the unbound system 10He obtained from one nucleon transfer Li(d,He) reaction at 50 A MeV. We found rather large yields for the He + 4n decay channel especially for higher excitation energy, which suggest the importance of the He + 4n structure in He
BINGO innovative assembly for background reduction in bolometric experiments
International audienceBINGO is a project aiming to set the grounds for large-scale bolometric neutrinoless double-beta-decay experiments capable of investigating the effective Majorana neutrino mass at a few meV level. It focuses on developing innovative technologies to achieve a very low background index, of the order of counts/(keV kg yr) in the region of interest. The BINGO demonstrator, called MINI-BINGO, will be composed of LiMoO and TeO crystals coupled to bolometric light detectors designed to investigate the promising double-beta-decay isotopes Mo and Te. This will allow us to reject a significant background in bolometers caused by surface contamination from -active radionuclides by means of light yield selection. In addition, BINGO introduces new methods to mitigate other sources of background, such as surface radioactive contamination, external radioactivity, and pile-up due to random coincidence of background events. This paper focuses on the description of an innovative assembly designed to reduce the passive materials in line of sight of the detectors, which is expected to be a dominant source of background in next-generation bolometric experiments. We present the performance of two prototype modules -- housing four LiMoO crystals in total -- operated in the Canfranc underground laboratory in Spain within a facility developed for the CROSS double-beta-decay experiment