Cryogenic Silicon Detectors with Implanted Contacts for the Detection of Visible Photons Using the Neganov–Trofimov–Luke Effect

Defaÿ, X.; Mondragón, E.; Willers, M.; Langenkämper, A.; Lanfranchi, J.‐C.; Münster, A.; Zöller, A.; Wawoczny, S.; Steiger, Hans; Hitzler, F.; Bruhn, C.; Schönert, S.; Potzel, W.; Chapellier, M.

doi:10.1007/s10909-016-1534-8

Cited by 7 publications

(6 citation statements)

References 10 publications

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“…To-date, several technologies of NTL bolometers for the detection of photons have been developed and used for the aforementioned applications. They can be grouped according to the absorber material and the temperature sensor as follows: silicon absorbers equipped with TES (Transition-Edge Sensor) thermometers [14,32,33,34,35]; silicon absorber with NTD (Neutron-Transmutation-Doped) germanium thermistors [36,37]; and germanium absorbers read-out by NTD-Ge thermistors [38,39,40].…”

Section: Introductionmentioning

confidence: 99%

Charge-to-heat transducers exploiting the Neganov-Trofimov-Luke effect for light detection in rare-event searches

Novati

Bergé

Dumoulin

et al. 2019

Nuclear Instruments and Methods in Physics Research Section A:

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In this work we present how to fabricate large-area (15 cm 2 ), ultra-low threshold germanium bolometric photo-detectors and how to operate them to detect few (optical) photons. These detectors work at temperatures as low as few tens of mK and exploit the Neganov-Trofimov-Luke (NTL) effect. They are operated as charge-to-heat transducers: the heat signal is linearly increased by simply changing a voltage bias applied to special metal electrodes, fabricated onto the germanium absorber, and read by a (NTD-Ge) thermal sensor. We fabricated a batch of five prototypes and ran them in different facilities with dilution refrigerators. We carefully studied how impinging spurious infrared radiation impacts the detector performances, by shining infrared photons via optical-fiber-guided LED signals, in a controlled manner, into the bolometers. We hence demonstrated how the radiation-tightness of the test environment tremendously enhances the detector performances, allowing to set electrode voltage bias up to 90 volts without any leakage current and signal-to-noise gain as large as a factor 12 (for visible photons). As consequence, for the first time we could operate large-area NTD-Ge-sensorequipped NTL bolometric photo-detectors capable to reach sub 10-eV baseline noise (RMS). Such detectors open new frontiers for rare-event search experiments based on low light yield Ge-NTD equipped scintillating bolometers, such the CUPID neutrinoless double-beta decay experiment.1 The enhancement of visible-wavelength photons absorption was initially found to be 35% [45].

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Section: Introductionmentioning

confidence: 99%

Charge-to-heat transducers exploiting the Neganov-Trofimov-Luke effect for light detection in rare-event searches

Novati

Bergé

Dumoulin

et al. 2019

Nuclear Instruments and Methods in Physics Research Section A:

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“…Integrated light detectors based on direct MMC fabrication on the absorber wafer is another option, but requires continuing development [19]. Furthermore, a phonon amplification feature based on the Neganov-Luke effect can be integrated in the light absorber to improve the energy threshold [20,21].…”

Section: Discussionmentioning

confidence: 99%

Protocol for maximising light signal of metallic magnetic calorimeters for neutrinoless double beta decay search

Oh¹,

Kim²,

Kim³

et al. 2017

Supercond. Sci. Technol.

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We report on a systematic study for maximising the signal size of metallic magnetic calorimeters (MMCs) used for large-area light detectors operating at milli-Kelvin temperatures. These light detectors are to be used for phonon-scintillation detection using a scintillating crystal for rare event search experiments. The light detector is composed of a 2 inch wafer as an absorber for scintillation light from a crystal, and an MMC as its sensor. A systematic calculation for the expected signal size is made with different SQUID selections, Er concentrations of an MMC sensor, dimensions of the meander-shaped pick-up coil, field currents and operating temperatures. The optimisation study finds that more than five times larger signals can be achieved compared with that of a reference condition in which 90 eV root-mean-squared threshold is obtained. We also describe the inductance measurement for several MMC devices with different size of the pick-up coil to be applied for an optimal condition. This optimisation protocol is also valid for MMC applications of x-ray, alpha and beta spectroscopies.

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“…Since the detector noise also tends to increase with increasing voltage, an optimal voltage should be found to maximally utilize the NTL effect. The ability to increase the detector sensitivity by means of the NTL effect has been demonstrated in a number of applications based on various LTD sensors, including TESs, MMCs and NTD Ge thermistors [180][181][182][183]. These detectors showed reasonable amplification gains without significant degradation in noise level, resulting in improved sensitivity.…”

Section: Phonon Amplification By the Neganov-trofimov-luke Effectmentioning

confidence: 99%

Superconducting detectors for rare event searches in experimental astroparticle physics

Kim,

Lee,

Yang

2021

Preprint

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Superconducting detectors have become an important tool in experimental astroparticle physics, which seeks to provide a fundamental understanding of the Universe. In particular, such detectors have demonstrated excellent potential in two challenging research areas involving rare event search experiments, namely, the direct detection of dark matter and the search for neutrinoless double beta decay. Here, we review the superconducting detectors that have been and are planned to be used in these two categories of experiments. We first provide brief histories of the two research areas and outline their significance and challenges in astroparticle physics. Then, we present an extensive overview of various types of superconducting detectors with a focus on sensor technologies and detector physics, which are based on calorimetric measurements and heat flow in the detector components. Finally, we introduce leading experiments and discuss their future prospects for the detection of dark matter and the search for neutrinoless double beta decay employing superconducting detectors.

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Cryogenic Silicon Detectors with Implanted Contacts for the Detection of Visible Photons Using the Neganov–Trofimov–Luke Effect

Cited by 7 publications

References 10 publications

Charge-to-heat transducers exploiting the Neganov-Trofimov-Luke effect for light detection in rare-event searches

Charge-to-heat transducers exploiting the Neganov-Trofimov-Luke effect for light detection in rare-event searches

Protocol for maximising light signal of metallic magnetic calorimeters for neutrinoless double beta decay search

Superconducting detectors for rare event searches in experimental astroparticle physics

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