The EXPLORER gravitational wave antenna: recent improvements and performances

Details The EXPLORER gravitational wave antenna: recent improvements and performances The EXPLORER gravitational wave antenna: recent improvements and performances

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002cqgra..19.1905a&link_type=abstract

Classical and Quantum Gravity, Volume 19, Issue 7, pp. 1905-1910 (2002).

Computer Science

Performance

5

Scientific paper

Since the beginning of 2000 the EXPLORER gravity wave (GW) detector has been operated continuously after a stop devoted to improve the apparatus. The antenna has been equipped with a new read-out. The use of a new transducer, characterized by a very small gap, and a dc-SQUID with a high coupling, led to a better sensitivity and a larger bandwidth. The EXPLORER sensitivity in terms of spectral noise amplitude, at present (June 2001), is 10-20 Hz-1/2 over a bandwidth of 35 Hz and 3 × 10-21 Hz-1/2 with a bandwidth of about 6 Hz, corresponding to a sensitivity to short conventional GW bursts of h = 4 × 10-19. The performance is stable and the apparatus is taking data with a duty cycle in excess of 80%.

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