The cryogenic resonant gravitational wave detectors NAUTILUS and EXPLORER, made of an aluminum alloy bar, can detect cosmic ray showers. At temperatures above I K, when the material is in the normal-conducting state, the measured signals are in good agreement with the expected values based on the cosmic rays data and on the thermo-acoustic model. When NAUTILUS was operated at the temperature of 0.14 K, in superconductive state, large signals produced by cosmic ray interactions, more energetic than expected, were recorded. The NAUTILUS data in this case are in agreement with the measurements done by a dedicated experiment on a particle beam. The biggest recorded event was in EXPLORER and excited the first longitudinal mode to a vibrational energy of similar to 670 K, corresponding to similar to 360 TeV absorbed in the bar. Cosmic rays can be an important background in future acoustic detectors of improved sensitivity. At present, they represent a useful tool to verify the gravitational wave antenna performance. (C) 2008 Elsevier B.V. All rights reserved.

Astone, P., Babusci, D., Bassan, M., Bonifazi, P., Cavallari, G., Coccia, E., et al. (2008). Detection of high energy cosmic rays with the resonant gravitational wave detectors NAUTILUS and EXPLORER. ASTROPARTICLE PHYSICS, 30(4), 200-208 [10.1016/j.astropartphys.2008.09.002].

Detection of high energy cosmic rays with the resonant gravitational wave detectors NAUTILUS and EXPLORER

BASSAN, MASSIMO;COCCIA, EUGENIO;FAFONE, VIVIANA;MOLETI, ARTURO;PIZZELLA, GUIDO;
2008-01-01

Abstract

The cryogenic resonant gravitational wave detectors NAUTILUS and EXPLORER, made of an aluminum alloy bar, can detect cosmic ray showers. At temperatures above I K, when the material is in the normal-conducting state, the measured signals are in good agreement with the expected values based on the cosmic rays data and on the thermo-acoustic model. When NAUTILUS was operated at the temperature of 0.14 K, in superconductive state, large signals produced by cosmic ray interactions, more energetic than expected, were recorded. The NAUTILUS data in this case are in agreement with the measurements done by a dedicated experiment on a particle beam. The biggest recorded event was in EXPLORER and excited the first longitudinal mode to a vibrational energy of similar to 670 K, corresponding to similar to 360 TeV absorbed in the bar. Cosmic rays can be an important background in future acoustic detectors of improved sensitivity. At present, they represent a useful tool to verify the gravitational wave antenna performance. (C) 2008 Elsevier B.V. All rights reserved.
2008
Pubblicato
Rilevanza internazionale
Articolo
Nessuno
Settore FIS/01 - FISICA SPERIMENTALE
English
Cosmic rays; Gravitational wave detectors; Radiation acoustics
Astone, P., Babusci, D., Bassan, M., Bonifazi, P., Cavallari, G., Coccia, E., et al. (2008). Detection of high energy cosmic rays with the resonant gravitational wave detectors NAUTILUS and EXPLORER. ASTROPARTICLE PHYSICS, 30(4), 200-208 [10.1016/j.astropartphys.2008.09.002].
Astone, P; Babusci, D; Bassan, M; Bonifazi, P; Cavallari, G; Coccia, E; D'Antonio, S; Fafone, V; Giordano, G; Ligi, C; Marini, A; Mazzitelli, G; Minen...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/33781
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