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DOE OSTI · 2534642

Signal processing and spectral modeling for the BeEST experiment

Kim, Inwook [Lawrence Livermore National Laboratory; Colorado School of Mines] (ORCID:0000000283946613)·Bray, Connor [Colorado School of Mines; Lawrence Livermore National Laboratory] (ORCID:0000000271093326)·Marino, Andrew [Colorado School of Mines; Lawrence Livermore National Laboratory]·Stone-Whitehead, Caitlyn [Colorado School of Mines]·Lamm, Amii [Colorado School of Mines]·Abells, Ryan [TRIUMF]·Amaro, Pedro [Universidade Nova de Lisboa] (ORCID:0000000252576728)·Andoche, Adrien [Université de Strasbourg] (ORCID:0000000259104205)·Cantor, Robin [STAR Cryoelectonics LLC]·Diercks, David [Colorado School of Mines] (ORCID:0000000251380168)·Fretwell, Spencer [Colorado School of Mines] (ORCID:0000000206404853)·Gillespie, Abigail [Colorado School of Mines]·Guerra, Mauro [Universidade Nova de Lisboa] (ORCID:0000000162864048)·Hall, Ad [STAR Cryoelectonics LLC]·Harris, Cameron N. [Colorado School of Mines]·Harris, Jackson T. [XIA LLC]·Hinkle, Calvin [Colorado School of Mines] (ORCID:0009000805972470)·Hayen, Leendert M. [LPC CAEN] (ORCID:0000000294710964)·Hervieux, Paul-Antoine [Université de Strasbourg] (ORCID:0000000249659709)·Kim, Geon-Bo [Lawrence Livermore National Laboratory] (ORCID:0000000205235496)·Leach, Kyle G. [Colorado School of Mines; Facility for Rare Isotope Beams] (ORCID:0000000247511698)·Lennarz, Annika [TRIUMF; McMaster University] (ORCID:0000000281380126)·Lordi, Vincenzo [Lawrence Livermore National Laboratory] (ORCID:0000000324154656)·Machado, Jorge [Universidade Nova de Lisboa] (ORCID:0000000203834882)·McKeen, David [TRIUMF]·Mougeot, Xavier [Université Paris-Saclay] (ORCID:0000000161618208)·Ponce, Francisco [Pacific Northwest National Laboratory] (ORCID:0000000296558994)·Ruiz, Chris [TRIUMF] (ORCID:0000000164686097)·Samanta, Amit [Lawrence Livermore National Laboratory]·Santos, José Paulo [Universidade Nova de Lisboa] (ORCID:0000000258900971)·Smolsky, Joseph [Colorado School of Mines]·Taylor, John [Colorado School of Mines] (ORCID:0009000885300868)·Templet, Joseph [Colorado School of Mines]·Upadhyayula, Sriteja [TRIUMF] (ORCID:0000000169182488)·Wagner, Louis [TRIUMF] (ORCID:0009000099549658)·Warburton, William K. [XIA LLC]·Waters, Benjamin [Colorado School of Mines]·Friedrich, Stephan [Lawrence Livermore National Laboratory] (ORCID:0000000183933516)
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Abstract

The Beryllium Electron capture in Superconducting Tunnel junctions (BeEST) experiment searches for evidence of heavy neutrino mass eigenstates in the nuclear electron capture decay of 7 Be by precisely measuring the recoil energy of the 7 Li daughter. In Phase III, the BeEST experiment has been scaled from a singl superconducting tunnel junction (STJ) sensor to a 36-pixel array to increase sensitivity and mitigate gamma-induced backgrounds. Phase III also uses a new continuous data acquisition system that greatly increases the flexibility for signal processing and data cleaning. Here, we have developed procedures for signal processing and spectral fitting that are sufficiently robust to be automated for large datasets. Furthermore, this article presents the optimized procedures before unblinding the majority of the Phase III dataset to search for physics beyond the standard model.

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6 ≤ A ≤ 1973 NUCLEAR PHYSICS AND RADIATION PHYSICSElectron & muon captureElectroweak interactions in nuclear physicsNeutrinosNuclear tests of fundamental interactionsPrecision measurementsRadiation detectorsSterile neutrinos

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BibTeXRIS

Kim, Inwook [Lawrence Livermore National Laboratory; Colorado School of Mines] (ORCID:0000000283946613), Bray, Connor [Colorado School of Mines; Lawrence Livermore National Laboratory] (ORCID:0000000271093326), Marino, Andrew [Colorado School of Mines; Lawrence Livermore National Laboratory], Stone-Whitehead, Caitlyn [Colorado School of Mines], Lamm, Amii [Colorado School of Mines], Abells, Ryan [TRIUMF], Amaro, Pedro [Universidade Nova de Lisboa] (ORCID:0000000252576728), Andoche, Adrien [Université de Strasbourg] (ORCID:0000000259104205), Cantor, Robin [STAR Cryoelectonics LLC], Diercks, David [Colorado School of Mines] (ORCID:0000000251380168), Fretwell, Spencer [Colorado School of Mines] (ORCID:0000000206404853), Gillespie, Abigail [Colorado School of Mines], Guerra, Mauro [Universidade Nova de Lisboa] (ORCID:0000000162864048), Hall, Ad [STAR Cryoelectonics LLC], Harris, Cameron N. [Colorado School of Mines], Harris, Jackson T. [XIA LLC], Hinkle, Calvin [Colorado School of Mines] (ORCID:0009000805972470), Hayen, Leendert M. [LPC CAEN] (ORCID:0000000294710964), Hervieux, Paul-Antoine [Université de Strasbourg] (ORCID:0000000249659709), Kim, Geon-Bo [Lawrence Livermore National Laboratory] (ORCID:0000000205235496), Leach, Kyle G. [Colorado School of Mines; Facility for Rare Isotope Beams] (ORCID:0000000247511698), Lennarz, Annika [TRIUMF; McMaster University] (ORCID:0000000281380126), Lordi, Vincenzo [Lawrence Livermore National Laboratory] (ORCID:0000000324154656), Machado, Jorge [Universidade Nova de Lisboa] (ORCID:0000000203834882), McKeen, David [TRIUMF], Mougeot, Xavier [Université Paris-Saclay] (ORCID:0000000161618208), Ponce, Francisco [Pacific Northwest National Laboratory] (ORCID:0000000296558994), Ruiz, Chris [TRIUMF] (ORCID:0000000164686097), Samanta, Amit [Lawrence Livermore National Laboratory], Santos, José Paulo [Universidade Nova de Lisboa] (ORCID:0000000258900971), Smolsky, Joseph [Colorado School of Mines], Taylor, John [Colorado School of Mines] (ORCID:0009000885300868), Templet, Joseph [Colorado School of Mines], Upadhyayula, Sriteja [TRIUMF] (ORCID:0000000169182488), Wagner, Louis [TRIUMF] (ORCID:0009000099549658), Warburton, William K. [XIA LLC], Waters, Benjamin [Colorado School of Mines], Friedrich, Stephan [Lawrence Livermore National Laboratory] (ORCID:0000000183933516). 2025-03-19. Signal processing and spectral modeling for the BeEST experiment. https://doi.org/10.1103/physrevd.111.052010

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