Cerenkov light identification with Si low-temperature detectors with sensitivity enhanced by the Neganov-Luke effect

Gironi, L.; Biassoni, M.; Brofferio, C.; Capelli, S.; Carniti, P.; Cassina, L.; Clemenza, M.; Cremonesi, O.; Faverzani, M.; Ferri, E.; Fossati, Enrico; Giachero, A.; Giordano, C.; Gotti, C.; Maino, M.; Margesin, B.; Moretti, Federico; Nucciotti, A.; Pavan, M.; Pessina, G.; Pozzi, S.; Previtali, E.; Puiu, A.; Sisti, M.; Terranova, F.

doi:10.1103/physrevc.94.054608

Cited by 15 publications

(14 citation statements)

References 28 publications

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“…1 The ideal light detector should provide excellent energy resolution (<20 eV), wide active surface (5 Â 5 cm 2 ), reliable and reproducible behavior, and the possibility of operating hundreds/thousands of channels. None of the existing technologies [2][3][4][5][6][7] is ready to fulfill all these requirements without further R&D. Since most of the proposed detectors are limited by the number of channels that can be easily installed and operated, the CALDER project 8 aims to develop a light detector starting from devices that are naturally multiplexed, such as the Kinetic Inductance Detectors (KIDs). 9 Thanks to the high sensitivity and to the multiplexed read-out, KIDs have been proposed in several physics sectors, such as photon detection, astronomy, [9][10][11] search for dark matter interactions, 12,13 and for the read-out of transition-edge sensors arrays.…”

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confidence: 99%

High sensitivity phonon-mediated kinetic inductance detector with combined amplitude and phase read-out

Cardani

Casali

Colantoni

et al. 2017

Applied Physics Letters

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Developing wide-area cryogenic light detectors with baseline resolution better than 20 eV is one of the priorities of next generation bolometric experiments searching for rare interactions, as the simultaneous read-out of the light and heat signals enables background suppression through particle identification. Among the proposed technological approaches for the phonon sensor, the naturally-multiplexed Kinetic Inductance Detectors (KIDs) stand out for their excellent intrinsic energy resolution and reproducibility. The potential of this technique was proved by the CALDER project, that reached a baseline resolution of 154 ± 7 eV RMS by sampling a 2×2 cm 2 Silicon substrate with 4 Aluminum KIDs. In this paper we present a prototype of Aluminum KID with improved geometry and quality factor. The design improvement, as well as the combined analysis of amplitude and phase signals, allowed to reach a baseline resolution of 82 ± 4 eV by sampling the same substrate with a single Aluminum KID.

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confidence: 99%

High sensitivity phonon-mediated kinetic inductance detector with combined amplitude and phase read-out

Cardani

Casali

Colantoni

et al. 2017

Applied Physics Letters

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“…Re-scaling the light signal from 2615 to 2528 keV, we obtain DP=3.6, using one highly likely assumption that an α particle at 2528 keV will show a light signal equal than the same particle at 5304 keV ( 210 Po). This DP is the best ever achieved with large mass TeO 2 crystals (M > 7 g) and without the need for additional Neganov-Luke amplification [33,45,46], or more sophisticated TES sensors [47] or both [48].…”

Section: Heat and Light Measurementmentioning

confidence: 87%

Cryogenic light detectors with enhanced performance for rare event physics

Barucci

Beeman

Caracciolo

et al. 2019

Nuclear Instruments and Methods in Physics Research Section A:

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We have developed and tested a new way of coupling bolometric light detectors to scintillating crystal bolometers based upon simply resting the light detector on the crystal surface, held in position only by gravity. This straightforward mounting results in three important improvements: (1) it decreases the amount of non-active materials needed to assemble the detector, (2) it substantially increases the light collection efficiency by minimizing the light losses induced by the mounting structure, and (3) it enhances the thermal signal induced in the light detector thanks to the extremely weak thermal link to the thermal bath.We tested this new technique with a 16 cm 2 Ge light detector with thermistor readout sitting on the surface of a large TeO 2 bolometer. The light collection efficiency was increased by greater than 50% compared to previously tested alternative mountings. We obtained a baseline energy resolution on the light detector of 20 eV RMS that, together with increased light collection, enabled us to obtain the best α vs β/γ discrimination ever obtained with massive TeO 2 crystals. At the same time we achieved rise and decay times of 0.8 and 1.6 ms, respectively. This superb performance meets all of the requirements for the CUPID (CUORE Upgrade with Particle IDentification) experiment, which is a 1-ton scintillating bolometer follow up to CUORE. tons, producing heat (phonons) that is measured by a suitable thermometer. The main difference among the various Bolometric Light Detector (BLD) instruments currently in use is the choice of the thermometer element, e.g. Transition Edge Sensors (TES) [12], Neutron Transmutation Doped (NTD) thermistors [13] or Micro Magnetic Calorimeters (MMC) [14].The work presented here was performed within the CU-PID framework [15,16], the future follow up of CUORE [17] that represents the largest world-wide bolometric experiment to date. The aim was to develop NTD-based BLDs with improved performance in terms of sensitivity, time response and simplified packaging for large arrays. Using the tiny Cherenkov light emission of TeO 2 [18,19] to decrease by two order of magnitude the α-induced background, requires a BLD with a S/N ratio of the order of ∼5 [16]: this corresponds to a RMS baseline resolution of the BLD of the order of ∼20 eV being the Cherenkov light signal of the order of 100 eV. Actually one can work towards the optimization of the light collection [20] and/or towards the energy resolution of the BLD or -as we made in this work-both. Additionally, in case of 100 Mo-based compounds, beside the same need to suppress the surface α-induced background, a fast time response of the BLD (≤ 1 ms) is mandatory to suppress the background induced the pile-up of the 2ν DBD [21]: also in this case the S/N ratio will play an important

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“…At the energy scale of interest for 0νββ, the signal electrons emit light while α particles do not. Several tests were done on small [82][83][84] and large crystals 80,[85][86][87][88][89] to characterize the discrimination power. The challenge of this method is the detection of the extremely small amount of light emitted by electrons at the 130 Te 0νββ energy (Q ββ ∼2.5 MeV) that is of the order of 100 eV, 87,90,91 i.e.…”

Section: Scintillating Bolometersmentioning

confidence: 99%

“…This mechanism is well known and used in dark matter searches 21,[113][114][115] and in the last two years has been successfully applied to detect the Cherenkov light in TeO 2 bolometers with different devices with both germanium and silicon absorbers. 83,84,88,89,116 Recently a complete event-by-event α/(β/γ) separation in a full-size TeO 2 CUORE bolometer coupled to a NTD-based germanium light detector with NTL amplification has been achieved. 80 In this case the electrodes, a set of concentric Al rings on a side, generate an electric field parallel to the surface that allows to decrease the charge trapping probability thanks to the short path length of the charges to the electrodes.…”

Section: Neganov-trofimov-luke Effectmentioning

confidence: 99%

Potentialities of the future technical improvements in the search of rare nuclear decays by bolometers

Bellini

2018

Int. J. Mod. Phys. A

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Bolometers are cryogenic calorimeters which feature excellent energy resolution, low energy threshold, high detection efficiency, flexibility in choice of materials, particle identification capability if operated as hybrid devices. After thirty years of rapid progresses, they represent nowadays a leading technology in several fields: particle and nuclear physics, X-ray astrophysics, cosmology. However, further and substantial developments are required to increase the sensitivity to the levels envisioned by future researches. A review of the challenges to be addressed and potentialities of bolometers in the search for rare nuclear decays is given, with particular emphasis to the neutrinoless double beta decay physics case.

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Cerenkov light identification with Si low-temperature detectors with sensitivity enhanced by the Neganov-Luke effect

Cited by 15 publications

References 28 publications

High sensitivity phonon-mediated kinetic inductance detector with combined amplitude and phase read-out

High sensitivity phonon-mediated kinetic inductance detector with combined amplitude and phase read-out

Cryogenic light detectors with enhanced performance for rare event physics

Potentialities of the future technical improvements in the search of rare nuclear decays by bolometers

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