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1.
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The Gravitational Wave Antennas Explorer And Nautilus: A Progress Report
/ Bassan, Massimo (Rome U., Tor Vergata ; INFN, Rome2) ; Astone, P (Rome U. ; INFN, Rome) ; Cosmelli,C (Rome U. ; INFN, Rome) ; Frasca, S (Rome U. ; INFN, Rome) ; Pallottino, G V (Rome U. ; INFN, Rome) ; Coccia, E (Rome U., Tor Vergata ; INFN, Rome2) ; Minenkov, Y (Rome U., Tor Vergata ; INFN, Rome2) ; Modena, I (Rome U., Tor Vergata ; INFN, Rome2) ; Moleti, A (Rome U., Tor Vergata ; INFN, Rome2) ; Pizzella, G (Rome U., Tor Vergata ; INFN, Rome2) et al.
/ROG
We report the most recent results obtained with the two cryogenic gravitational wave (g.w.) detectors of the Rome group. A new cross correlation measurement of stochastic background is described, as well as a test of Newton inverse square law at laboratory distances [...]
2000 - 5 p.
- Published in : , pp. 39-44
Fulltext: PDF;
In : 34th Rencontres de Moriond, Les Arcs, France, 23 - 30 Jan 1999, pp.39-44
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2.
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Vibrational excitation induced by electron beam and cosmic rays in normal and superconductive aluminum bars
/ Bassan, M. (INFN, Rome2 ; Rome U., Tor Vergata) ; Buonomo, B. (Frascati) ; Cavallari, G. (CERN) ; Coccia, E. (INFN, Rome2 ; Rome U., Tor Vergata) ; D'Antonio, S. (INFN, Rome2) ; Fafone, V. (INFN, Rome2 ; Rome U., Tor Vergata) ; Foggetta, L.G. (Frascati) ; Ligi, C. (Frascati) ; Marini, A. (Frascati) ; Mazzitelli, G. (Frascati) et al.
We report new measurements of the acoustic excitation of an Al5056 superconductive bar when hit by an electron beam, in a previously unexplored temperature range, down to 0.35 K. These data, analyzed together with previous results of the RAP experiment obtained for T > 0.54 K, show a vibrational response enhanced by a factor 4.9 with respect to that measured in the normal state. [...]
arXiv:1105.4724.-
2011 - 28 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 659 (2011) 289-298
Fulltext: PDF; External link: Preprint
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3.
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IGEC2: A 17-month search for gravitational wave bursts in 2005-2007
/ Astone, P. (INFN, Rome) ; Baggio, L. (LATMOS, Guyancourt) ; Bassan, M. (Rome U. ; INFN, Rome) ; Bignotto, M. (Padua U. ; INFN, Padua) ; Bonaldi, M. (IFN, Rome ; INFN, Padua) ; Bonifazi, P. (INFN, Rome ; INAF, Rome) ; Cavallari, G. (CERN) ; Cerdonio, M. (Padua U. ; INFN, Padua) ; Coccia, E. (Rome U. ; INFN, Rome) ; Conti, L. (INFN, Padua) et al.
We present here the results of a 515 days long run of the IGEC2 observatory, consisting of the four resonant mass detectors ALLEGRO, AURIGA, EXPLORER and NAUTILUS. The reported results are related to the fourfold observation time from Nov. [...]
arXiv:1002.3515.-
2010 - 10 p.
- Published in : Phys. Rev. D 82 (2010) 022003
APS Published version, local copy: PDF; Fulltext: PDF; External link: Preprint
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4.
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EXPLORER and NAUTILUS gravitational wave detectors : a status report
/ Astone, P (INFN, Rome) ; Ballantini, R (INFN, Genova) ; Babusci, D (INFN, Frascati ; Frascati) ; Bassan, M (Rome U., Tor Vergata ; INFN, Rome) ; Bonifazi, P (INFN, Rome ; INAF, Rome) ; Cavallari, G (CERN) ; Chincarini, A (INFN, Genova) ; Coccia, E (Rome U., Tor Vergata ; Gran Sasso) ; D'Antonio, S (INFN, Rome) ; Di Paolo Emilio, M (Gran Sasso ; Aquila U.) et al.
The two cryogenic resonant bar detectors of the ROG Collaboration, EXPLORER and NAUTILUS, have been taking data continuously with a high duty cycle for several years. We report here on the status of recent analysis of the data and in particular on the results of the burst searches in the year 2004..
2008
- Published in : Class. Quantum Gravity 25 (2008) 114048
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5.
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Experimental study of high energy electron interactions in a superconducting aluminum alloy resonant bar
/ Barucci, M. (INFN, Florence ; Florence U.) ; Bassan, M. (INFN, Rome2 ; Rome U., Tor Vergata) ; Buonomo, B. (Frascati) ; Cavallari, G. (CERN) ; Coccia, E. (Rome U., Tor Vergata ; INFN, Rome2) ; D'Antonio, S. (INFN, Rome2) ; Fafone, V. (INFN, Rome2 ; Rome U., Tor Vergata) ; Ligi, C. (Frascati) ; Lolli, L. (INFN, Florence ; Florence U.) ; Marini, A. (Frascati) et al.
Peak amplitude measurements of the fundamental mode of oscillation of a suspended aluminum alloy bar hit by an electron beam show that the amplitude is enhanced by a factor ~3.5 when the material is in the superconducting state. This result is consistent with the cosmic ray observations made by the resonant gravitational wave detector NAUTILUS, made of the same alloy, when operated in the superconducting state. [...]
arXiv:0901.1220.-
2009 - 13 p.
- Published in : Phys. Lett. A 373 (2009) 1801-1806
Fulltext: PDF; External link: Preprint
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6.
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Detection of high energy cosmic rays with the resonant gravitational wave detector NAUTILUS and EXPLORER
/ Astone, P. (INFN, Rome) ; Babusci, D. (Frascati) ; Bassan, M. (INFN, Rome2 ; Rome U., Tor Vergata) ; Bonifazi, P. (INFN, Rome ; IFSI, Rome) ; Cavallari, G. (CERN) ; Coccia, E. (INFN, Rome2 ; Rome U., Tor Vergata) ; D'Antonio, S. (INFN, Rome2) ; Fafone, V. (INFN, Rome2 ; Rome U., Tor Vergata) ; Giordano, G. (Frascati) ; Ligi, C. (Frascati) et al.
The cryogenic resonant gravitational wave detectors NAUTILUS and EXPLORER, made of an aluminum alloy bar, can detect cosmic ray showers. At temperatures above 1 K, when the material is in the normal conducting state, the measured signals are in good agreement with the values expected based on the cosmic rays data and on the thermo-acoustic model. [...]
arXiv:0806.1335.-
2008 - 21 p.
- Published in : Astropart. Phys. 30 (2008) 200-208
Fulltext: PDF; External link: Preprint
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7.
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The RAP experiment : Acoustic Detection of Particles
/ Bassan, M (Univ. di Tor Vergata and INFN Sezione Roma-2) ; Buonomo, B (INFN Frascati) ; Cavallari, G (CERN) ; Coccia, E (Univ. and INFN, Lab. Nat. del Gran Sasso) ; D'Antonio, S (Istituo Nazionale di Fisica Nuclear, Sezione Roma-2) ; Delle Monache (Lab. Naz. Frascati) ; Di Gioacchino, D (Lab. Naz. Frascati) ; Fafone, V (Univ. di Tor Vergata and INFN Sezione Roma-2) ; Ligi, C (Lab. Naz. Frascati) ; Marini, A (Lab. Naz. Frascati) et al.
The RAP experiment is based on the acoustic detection of high energy particles by cylindrical bars. In fact, the interacting particles warm up the material around their track causing a local thermal expansion that, being prevented by the rest of the material, causes a local impulse of pressure. [...]
2007
- Published in : Nucl. Phys. B, Proc. Suppl. 172 (2007) 219-223
In : 10th Topical Seminar on Innovative Particle and Radiation Detectors, Sienna, Italy, 1 - 5 Oct 2006, pp.219-223
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8.
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9.
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All-sky incoherent search for periodic signals with Explorer 2005 data
/ Astone, P. (INFN, Rome) ; Babusci, D. (Frascati) ; Bassan, M. (Rome U., Tor Vergata ; INFN, Rome2) ; Carelli, P. (INFN, Rome2) ; Cavallari, G. (CERN) ; Chincarini, A. (INFN, Genoa) ; Coccia, E. (Rome U., Tor Vergata ; INFN, Rome2) ; D'Antonio, S. (INFN, Rome2) ; Emilio, M.Di Paolo (Gran Sasso) ; Fafone, V. (Rome U., Tor Vergata ; INFN, Rome2) et al.
The data collected during 2005 by the resonant bar Explorer are divided into segments and incoherently summed in order to perform an all-sky search for periodic gravitational wave signals. The parameter space of the search spanned about 40 Hz in frequency, over 23927 positions in the sky. [...]
arXiv:0708.4367.-
2008 - 9 p.
- Published in : Class. Quantum Gravity 25 (2008) 114028
Preprint: PDF; External link: Fulltext
In : 18th International Conference on General Relativity and Gravitation, Sydney, Australia, 8 - 13 Jul 2007, pp.114028
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