P Astone et al 2002 Class. Quantum Grav. 19 1897 doi:10.1088/0264-9381/19/7/390
P Astone1, D Babusci2, M Bassan3, P Bonifazi4, E Coccia3, S D'Antonio5, V Fafone2, G Giordano2, A Marini2, Y Minenkov3, I Modena3, G Modestino2, A Moleti3, G V Pallottino5, G Pizzella6, L Quintieri2, F Ronga2, R Terenzi4 and M Visco4
Show affiliationsCosmic ray showers interacting with the resonant mass gravitational wave antenna NAUTILUS, cooled down to 0.1 K, have been detected. The experimental results show large signals at a rate much greater than expected. Since August 2000 NAUTILUS has been running at T = 1.1 K (non-superconductor aluminium). There is evidence at the 3 standard deviation level that the rate of the large signals is dependent on the bar temperature. The rate is compatible with zero at a bar temperature of 1.1 K.
04.80.Nn Gravitational wave detectors and experiments
96.50.sb Composition, energy spectra and interactions
96.50.sd Extensive air showers
95.55.Vj Neutrino, muon, pion, and other elementary particle detectors; cosmic ray detectors
Issue 7 (7 April 2002)
Received 4 October 2001, in final form 7 December 2001
Published 18 March 2002
P Astone et al 2002 Class. Quantum Grav. 19 1897
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