The gravitational wave resonant detector AURIGA is about to start its second scientific run. Compared to the first run, the detector has been upgraded significantly in: 1) the readout employs a double stage SQUID amplifier; 2) the matching line between the transducer and the amplifier is resonant and tuned to the bar resonance; 3) the cryogenic suspensions have been modified in order avoid spurious resonances in the relevant frequency range and ensure an attenuation of approximately -300 dB. The sensitivity and the bandwidth at T=1.5 K are expected to be at least one order of magnitude better than in the previous run.
Status report of the gravitational wave detector AURIGA
Vinante A;
2003
Abstract
The gravitational wave resonant detector AURIGA is about to start its second scientific run. Compared to the first run, the detector has been upgraded significantly in: 1) the readout employs a double stage SQUID amplifier; 2) the matching line between the transducer and the amplifier is resonant and tuned to the bar resonance; 3) the cryogenic suspensions have been modified in order avoid spurious resonances in the relevant frequency range and ensure an attenuation of approximately -300 dB. The sensitivity and the bandwidth at T=1.5 K are expected to be at least one order of magnitude better than in the previous run.File in questo prodotto:
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