https://gwic.ligo.org/

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1 https://gwic.ligo.org/
News GWIC is now an IUPAP Working group (WG11) GWIC thesis Prize named after Stefano Braccini (and published in the Springer Theses series) EC elected GWIC Chair for another two-years mandate

2 Springer Theses is a book series in which exceptional Ph. D
Springer Theses is a book series in which exceptional Ph.D. theses in the physical sciences are published in their entirety. A strictly limited number of theses are accepted into the series, based on the recommendations of supervisors from the world's top universities and research institutes. GWIC has been invited to nominate two Thesis Prize winner each year for this series.

3 ROG Collaboration 2014 www.lnf.infn.it/esperimenti/rog 5.7 FTE fisici
LNF: Giordano Marini Ronga ROMA Tor Vergata: Bassan Coccia D’Antonio Fafone Minenkov Moleti Rocchi Visco ROMA: Astone DTZ2 Bonifazi Frasca ROG Collaboration 2014 5.7 FTE fisici 2.5 FTE tecnici

4 NAUTILUS LNF - FRASCATI
Bar Al M = 2270 kg L = 2.91 m Ø = 0.6 m nA=935Hz @ T = 3 K Cosmic ray detector

5 The three Records of NAUTILUS Coldest massive detector
2.5 tons at 90 mK Europhys. Lett.16, 231 (1991) First acoustic detection of cosmic rays Proving the Cabibbo thermo-acoustic theory Phys. Rev. Lett. 84, 14 (2000) Longest science run for GW detectors 10 years continuous data taking Phys. Rev. D 82, (2010) Phys. Rev. D (2013)

6 Peak sensitivity displacement strain

7 NAUTILUS 2013 NAUTILUS ha raccolto dati in modo continuativo come da molti anni a questa parte. Il duty cycle è limitato essenzialmente dalle operazioni di manutenzione criogenica e supera il 90%. I dati hanno qualità costante e non sono influenzati dalle normali attività naturali e umane. Temperatura di rumore ~ 1 mK 2 nuove pubblicazioni

8 Phys. Rev. D87 (2013) ICRC 2013

9 Phys. Rev. D87 (2013) April June 2010

10 Nautilus is equipped with streamer tubes
Nautilus as a particle detector Cabibbo – De Rujula theory: Interaction of a particle with a bar: ionization energy lost is converted in thermal heating and therefore pressure wave. The detection mechanism is quite simple, no threshold in β “calorimetric measurement” Nautilus is equipped with streamer tubes particle detectors Nautilus is able to detect energy releases as low as 10-7 eV (10-26 J) by measuring the excitation of the longitudinal mode of vibration. Cosmic rays: observed Exotic form of matter: observable Upper limit for nuclearite flux from the Rome GW resonant detectors Phys.Rev. D47: , 1993 Cosmic rays observed by NAUTILUS Phys.Rev.Lett. 84:14-17, 2000. Detection of high energy cosmic rays with NAUTILUS Astropart.Phys. 30: , 2008.

11 In Nautilus T=0.14 K >1 order of magnitude in energy
Thermo-acoustic effect and Cosmic ray detection in Nautilus and Explorer “enhancement at T=0.14Kelvin” an “event” in the antenna language --> signal many sigma above noise (~10 mKelvin or more) adding the antenna output for many cosmic ray signals and subtracting the background out of time we have sensitivity for very small signals (~0.01 mKelvin) 0.14 K 445MeV In this plot you see directly the enhancement due to superconductive state. The RAP experiment using a particle beam has confirmed the thermo-acoustic model for T>Tc. For T<Tc RAP has measured an enhancement similar to Nautilus. This is due to superconductive effects. 3 K 44.5MeV In Nautilus T=0.14 K >1 order of magnitude in energy

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14 for AURIGA and NAUTILUS
AURIGA - LNL NAUTILUS - LNF Data Taking AUNA We are here ´06 ´07 ´08 ´09 ´10 ´11 ´12 ´13 ´14 ´15 ´16 ´17 ´18 ´19 ´20 ´21 ´22 Virgo GEO LIGO LISA E.T. Virgo+ Advanced Virgo GEO HF Hanford LIGO+ Advanced LIGO Livingston Launch Transfer data DS PCP Construction Commissioning data Window of opportunity for AURIGA and NAUTILUS 14

15 ATTIVITA’ 2014 NAUTILUS continua la presa dati, coordinandosi con AURIGA nell’ambito dell’accordo AuNa. Correlazioni previste di AuNA con Geo in conseguenza di trigger astrofisico • Richiesta ROG 2014: 139 kEuro (Elio ed Azoto per Nautilus, turni, rivelatori di cosmici) livello minimo