Characterization of silicon drift detectors with electrons for the TRISTAN project

Mertens, S.; Brunst, T.; Korzeczek, M.; Lebert, Manuel; Siegmann, D.; Alborini, Antonio; Altenmüller, K.; Biassoni, M.; Bombelli, L.; Carminati, Marco; Descher, M.; Fink, David J.; Fiorini, C.; Forstner, Christina; Gugiatti, Matteo; Houdy, T.; King, Pietro; Lebeda, O.; Lechner, P.; Pantuev, V.S.; Parno, D. S.; Pavan, M.; Pozzi, S.; Radford, D. C.; Slezák, M.; Steidl, M.; Trigilio, Paolo; Urban, K.; Vénos, D.; Wolf, J.; Wüstling, S.; Yen, Y.-R.

doi:10.1088/1361-6471/abc2dc

Cited by 16 publications

(19 citation statements)

References 38 publications

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“…The quantum liquid amplification process described here for enhancing relic neutrino capture increases the effective tritium target mass for a fixed area and a given time exposure with the possibility to provide sufficient counting statistics needed to observe the impact of WDM on the CνB anisotropies. The quantum liquid amplification process, if it can be realized in a practical configuration, may also be relevant for limited aperture MAC-E neutrino mass experiments and direct keV-mass sterile neutrino searches that look for kinematic thresholds appearing in the tritium spectrum [18,19]. Effects of mixing may open up the possibility of direct sterile neutrino capture [20].…”

Section: Results and Conclusionmentioning

confidence: 99%

Impact of Warm Dark Matter on the Cosmic Neutrino Background Anisotropies

Tully

Zhang

2022

Universe

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The Cosmic Neutrino Background (CνB) anisotropies for massive neutrinos are a unique probe of large-scale structure formation. The redshift-distance measure is completely different for massive neutrinos as compared to electromagnetic radiation. The CνB anisotropies in massive neutrinos grow in response to non-relativistic motion in gravitational potentials seeded by relatively high k-modes. Differences in the early phases of large-scale structure formation in warm dark matter (WDM) versus cold dark matter (CDM) cosmologies have an impact on the magnitude of the CνB anisotropies for contributions to the angular power spectrum that peak at high k-modes. We take the examples of WDM consisting of 2, 3, or 7 keV sterile neutrinos and show that the CνB anisotropies for 0.05 eV neutrinos drop off at high-l multipole moment in the angular power spectrum relative to CDM. At the same angular scales that one can observe baryonic acoustical oscillations in the CMB, the CνB anisotropies begin to become sensitive to differences in WDM and CDM cosmologies. The precision measurement of high-l multipoles in the CνB neutrino sky map is a potential possibility for the PTOLEMY experiment with thin film targets of spin-polarized atomic tritium superfluid that exhibit significant quantum liquid amplification for non-relativistic relic neutrino capture.

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Section: Results and Conclusionmentioning

confidence: 99%

Impact of Warm Dark Matter on the Cosmic Neutrino Background Anisotropies

Tully

Zhang

2022

Universe

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show abstract

“…The effective target mass for a given time exposure is increased relative to the unamplified process for the same target area. The quantum liquid amplification process for increasing the effective target mass for relic neutrino capture is also relevant for limited aperture MAC-E neutrino mass experiments and direct keV-mass sterile neutrino searches that look for kinematic thresholds appearing in the tritium spectrum [17,18]. The superfluid tritium target also has the potential to reduce zero-point motion effects on the tritium endpoint electron energy distribution [19,20].…”

Section: Results and Conclusionmentioning

confidence: 99%

Impact of Warm Dark Matter on the Cosmic Neutrino Background Anisotropies

Tully¹,

Zhang²

2022

Preprint

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The Cosmic Neutrino Background (CνB) anisotropies for massive neutrinos are a unique probe of large-scale structure formation. The redshift-distance measure is completely different for massive neutrinos as compared to electromagnetic radiation. The CνB anisotropies in massive neutrinos grow in response to non-relativistic motion in gravitational potentials seeded by relatively high k-modes. Differences in the early phases of large-scale structure formation in Warm Dark Matter (WDM) versus Cold Dark Matter (CDM) cosmologies have an impact on the magnitude of the CνB anisotropies for contributions to the angular power spectrum that peak at high k-modes. We take the example of WDM consisting of 2 keV sterile neutrinos and show that the CνB anisotropies for 0.05 eV neutrinos drop off at high-l multipole moment in the angular power spectrum relative to CDM. At the same angular scales that one can observe baryonic acoustical oscillations in the CMB, the CνB anisotropies begin to become sensitive to differences in WDM and CDM cosmologies. The precision measurement of high-l multipoles in the CνB neutrino sky map is a potential possibility for the PTOLEMY experiment with thin film targets of spin-polarized atomic tritium superfluid that exhibit significant quantum liquid amplification for non-relativistic relic neutrino capture.

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“…The TRISTAN project is exploring the sensitivity of such a search and is developing a new silicon drift detector focal-plane array for KATRIN with more than 1000 pixels [586,587]. This technology allows a measurement of a high β-electron flux with an energy resolution of 300 eV (FWHM) for 20 keV electrons, and large (3 mm) pixel footprints.…”

Section: Discussionmentioning

confidence: 99%