For experiments with high arrival rates, reliable identification of nearly-coincident events can be crucial. For calorimetric measurements to directly measure the neutrino mass such as HOLMES, unidentified pulse pile-ups are expected to be a leading source of experimental error. Although Wiener filtering can be used to recognize pile-up, it suffers from errors due to pulse shape variation from detector nonlinearity, readout dependence on subsample arrival times, and stability issues from the ill-posed deconvolution problem of recovering Dirac delta-functions from smooth data. Due to these factors, we have developed a processing method that exploits singular value decomposition to (1) separate single-pulse records from piled-up records in training data and (2) construct a model of single-pulse records that accounts for varying pulse shape with amplitude, arrival time, and baseline level, suitable for detecting nearly-coincident events. We show that the resulting processing advances can reduce the required performance specifications of the detectors and readout system or, equivalently, enable larger sensor arrays and better constraints on the neutrino mass.

Alpert, B., Ferri, E., Bennett, D., Faverzani, M., Fowler, J., Giachero, A., et al. (2016). Algorithms for Identification of Nearly-Coincident Events in Calorimetric Sensors. JOURNAL OF LOW TEMPERATURE PHYSICS, 184(1-2), 263-273 [10.1007/s10909-015-1402-y].

Algorithms for Identification of Nearly-Coincident Events in Calorimetric Sensors

FERRI, ELENA
Secondo
;
FAVERZANI, MARCO;GIACHERO, ANDREA;MAINO, MATTEO;NUCCIOTTI, ANGELO ENRICO LODOVICO;PUIU, PAUL ANDREI;
2016

Abstract

For experiments with high arrival rates, reliable identification of nearly-coincident events can be crucial. For calorimetric measurements to directly measure the neutrino mass such as HOLMES, unidentified pulse pile-ups are expected to be a leading source of experimental error. Although Wiener filtering can be used to recognize pile-up, it suffers from errors due to pulse shape variation from detector nonlinearity, readout dependence on subsample arrival times, and stability issues from the ill-posed deconvolution problem of recovering Dirac delta-functions from smooth data. Due to these factors, we have developed a processing method that exploits singular value decomposition to (1) separate single-pulse records from piled-up records in training data and (2) construct a model of single-pulse records that accounts for varying pulse shape with amplitude, arrival time, and baseline level, suitable for detecting nearly-coincident events. We show that the resulting processing advances can reduce the required performance specifications of the detectors and readout system or, equivalently, enable larger sensor arrays and better constraints on the neutrino mass.
Articolo in rivista - Articolo scientifico
Filter algorithms; High-rate processing; Microcalorimeter; Uncertainty;
Filter algorithms; High-rate processing; Microcalorimeter; Uncertainty; Condensed Matter Physics; Atomic and Molecular Physics, and Optics; Materials Science (all)
English
2016
184
1-2
263
273
none
Alpert, B., Ferri, E., Bennett, D., Faverzani, M., Fowler, J., Giachero, A., et al. (2016). Algorithms for Identification of Nearly-Coincident Events in Calorimetric Sensors. JOURNAL OF LOW TEMPERATURE PHYSICS, 184(1-2), 263-273 [10.1007/s10909-015-1402-y].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/105685
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