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%.

Astone, P., Bassan, M., Bonifazi, P., Carelli, P., Castellano, M., Cavallari, G., et al. (2002). The EXPLORER gravitational wave antenna: recent improvements and performances. CLASSICAL AND QUANTUM GRAVITY, 19(7), 1905-1910 [10.1088/0264-9381/19/7/391].

The EXPLORER gravitational wave antenna: recent improvements and performances

BASSAN, MASSIMO;COCCIA, EUGENIO;FAFONE, VIVIANA;MODENA, IVO;MOLETI, ARTURO;PIZZELLA, GUIDO;ROCCHI, ALESSIO;
2002-01-01

Abstract

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%.
2002
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/01 - FISICA SPERIMENTALE
Settore FIS/05 - ASTRONOMIA E ASTROFISICA
English
Astone, P., Bassan, M., Bonifazi, P., Carelli, P., Castellano, M., Cavallari, G., et al. (2002). The EXPLORER gravitational wave antenna: recent improvements and performances. CLASSICAL AND QUANTUM GRAVITY, 19(7), 1905-1910 [10.1088/0264-9381/19/7/391].
Astone, P; Bassan, M; Bonifazi, P; Carelli, P; Castellano, M; Cavallari, G; Coccia, E; Cosmelli, C; D'Antonio, S; Fafone, V; Federici, G; Minenkov, Y;...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/101778
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