Performances of an ultralow frequency vertical pre-isolator for the VIRGO seismic attenuation chains
Identifieur interne : 00C427 ( Main/Exploration ); précédent : 00C426; suivant : 00C428Performances of an ultralow frequency vertical pre-isolator for the VIRGO seismic attenuation chains
Auteurs : R. Desalvo [Italie] ; A. Divirgilio [Italie] ; A. Errico [Italie] ; Feng Guotong [Italie] ; I. Ferrante [Italie] ; F. Frasconi [Italie] ; A. Gaddi [Italie] ; A. Gennai [Italie] ; G. Gennaro [Italie] ; A. Giazotto [Italie] ; L. Holloway [États-Unis] ; G. Losurdo [Italie] ; M. Maggiore [Italie] ; S. Mancini [Italie] ; M. Mazzoni [Italie] ; F. Palla [Italie] ; Pan Hui Bao [Italie] ; F. Paoletti [Italie] ; A. Pasqualetti [Italie] ; R. Passaquieti [Italie] ; D. Passuello [Italie] ; R. Poggiani [Italie] ; P. Popolizio [Italie] ; F. Raffaelli [Italie] ; D. Righetti [Italie] ; R. Ruberti [Italie] ; V. Rubino [Italie] ; P. Ruggi [Italie] ; R. Stanga [Italie] ; R. Taddei [Italie] ; R. Valentini [Italie] ; A. Vicere [Italie] ; J. Winterflood [Australie] ; Zhang Zhou [Italie] ; M. Bernardini [Italie] ; A. Bozzi [Italie] ; S. Braccini [Italie] ; C. Bradaschia [Italie] ; C. Casciano [Italie] ; G. C. Cella [Italie] ; A. Ciampa [Italie] ; G. Curci [Italie] ; E. D'Ambrosio [Italie] ; V. Dattilo [Italie] ; G. C. Decarolis [Italie] ; A. Delapierre [France]Source :
- Nuclear Inst. and Methods in Physics Research, A [ 0168-9002 ] ; 1999.
Descripteurs français
- Wicri :
- topic : Charge utile, Prototype.
English descriptors
- KwdEn :
- Accelerometer signal, Actuation, Actuator, Angular accelerometer, Angular oscillation, Attenuation, Attenuation plateau, Attenuation properties, Attenuator, Blade, Blade thickness, Blade tips, Braccini, Cabling, Cantilever blades, Central column, Coil, Crossbar, Crossbar recoil, Crossbar resonance, Desalvo, Design considerations, Displacement curve, Dissipation, Dynamic range, Elsevier science, Excitation, Feedback, Feedback loop, Feedback loops, Frequency band, Frequency range, Hammer blows, Horizontal accelerometer, Horizontal accelerometers, Horizontal lvdt, Horizontal mode couplings, Horizontal plane, Instr, Internal dissipation, Inverted pendulum, Inverted pendulum table, Italy dipartimento, Locking actuators, Lowest frequency, Lter, Lter body, Lter body magnet matrix, Lters, Lvdt, Magnet, Magnetic matrices, Maraging blades, Matrix, Matrix surface, Mechanical spring, Meth, Micrometric table, Motion attenuation, Noise suppression, Open circuit, Oscillation, Particular care, Payload, Payload rotation, Pendulum, Phys, Pisa, Power consumption, Prototype, Quality factor, Reference plate, Residual motion, Resonant frequencies, Resonant frequency, Seismic, Seismic activity, Seismic motion, Single wire, Small counterweight, Spring blades, Super attenuator, Suspension blade, Suspension blades, Suspension force, Suspension point, Suspension point adjustment screw, Suspension wire, Symmetry axis, Test mass, Thermal excursions, Thermal instabilities, Transfer function, Tunable blade mechanism, Ultralow frequency, Vertical, Vertical accelerometer, Vertical attenuation, Vertical component, Vertical direction, Vertical displacement, Vertical lvdt, Vertical motion, Vertical movement, Vertical oscillation, Vertical oscillations, Vertical resonance, Virgo, Virgo collaboration, Voice coil actuator, Voice coils.
- Teeft :
- Accelerometer signal, Actuation, Actuator, Angular accelerometer, Angular oscillation, Attenuation, Attenuation plateau, Attenuation properties, Attenuator, Blade, Blade thickness, Blade tips, Braccini, Cabling, Cantilever blades, Central column, Coil, Crossbar, Crossbar recoil, Crossbar resonance, Desalvo, Design considerations, Displacement curve, Dissipation, Dynamic range, Elsevier science, Excitation, Feedback, Feedback loop, Feedback loops, Frequency band, Frequency range, Hammer blows, Horizontal accelerometer, Horizontal accelerometers, Horizontal lvdt, Horizontal mode couplings, Horizontal plane, Instr, Internal dissipation, Inverted pendulum, Inverted pendulum table, Italy dipartimento, Locking actuators, Lowest frequency, Lter, Lter body, Lter body magnet matrix, Lters, Lvdt, Magnet, Magnetic matrices, Maraging blades, Matrix, Matrix surface, Mechanical spring, Meth, Micrometric table, Motion attenuation, Noise suppression, Open circuit, Oscillation, Particular care, Payload, Payload rotation, Pendulum, Phys, Pisa, Power consumption, Prototype, Quality factor, Reference plate, Residual motion, Resonant frequencies, Resonant frequency, Seismic, Seismic activity, Seismic motion, Single wire, Small counterweight, Spring blades, Super attenuator, Suspension blade, Suspension blades, Suspension force, Suspension point, Suspension point adjustment screw, Suspension wire, Symmetry axis, Test mass, Thermal excursions, Thermal instabilities, Transfer function, Tunable blade mechanism, Ultralow frequency, Vertical, Vertical accelerometer, Vertical attenuation, Vertical component, Vertical direction, Vertical displacement, Vertical lvdt, Vertical motion, Vertical movement, Vertical oscillation, Vertical oscillations, Vertical resonance, Virgo, Virgo collaboration, Voice coil actuator, Voice coils.
Abstract
Abstract: An ultralow resonant frequency vertical seismic activity attenuation filter prototype has been designed and built as the vertical component of a Pre-Isolation Stage (PIS) for low-frequency Seismic Attenuation (SA) chains. The task of the PIS is to reduce the excitation of the chain payload's resonant residual motions. A characterization and the performance of the prototype are reported along with some design considerations. An attenuation of 45dB has been achieved in the region of interest (the SA chain resonant frequency band) and an upgrade to more than 50dB attenuation is easily achievable. Tests of active feedback loop attenuation driven by electro magnetic actuators and controlled by a Digital Signal Processor reading a precision vertical accelerometer have been successfully performed. The filter also effectively acts as a precision positioner for the suspended payload.
Url:
DOI: 10.1016/S0168-9002(98)00684-6
Affiliations:
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Piero a Grado, Pisa</wicri:regionArea><placeName><settlement type="city">Pise</settlement><region nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Holloway, L" sort="Holloway, L" uniqKey="Holloway L" first="L." last="Holloway">L. Holloway</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Dept. of Physics, University of Illinois, 1110 W. Green St. Urbana IL 61801</wicri:regionArea><wicri:noRegion>1110 W. Green St. Urbana IL 61801</wicri:noRegion></affiliation></author><author><name sortKey="Losurdo, G" sort="Losurdo, G" uniqKey="Losurdo G" first="G." last="Losurdo">G. Losurdo</name><affiliation wicri:level="1"><country xml:lang="fr">Italie</country><wicri:regionArea>Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56100 Pisa</wicri:regionArea><wicri:noRegion>I-56100 Pisa</wicri:noRegion></affiliation></author><author><name sortKey="Maggiore, M" sort="Maggiore, M" uniqKey="Maggiore M" first="M." last="Maggiore">M. Maggiore</name><affiliation wicri:level="3"><country xml:lang="fr">Italie</country><wicri:regionArea>INFN sezione di Pisa, Via livornese 1291, I-56010 S. Piero a Grado, Pisa</wicri:regionArea><placeName><settlement type="city">Pise</settlement><region nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Mancini, S" sort="Mancini, S" uniqKey="Mancini S" first="S." last="Mancini">S. Mancini</name><affiliation wicri:level="3"><country xml:lang="fr">Italie</country><wicri:regionArea>INFN sezione di Pisa, Via livornese 1291, I-56010 S. Piero a Grado, Pisa</wicri:regionArea><placeName><settlement type="city">Pise</settlement><region nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Mazzoni, M" sort="Mazzoni, M" uniqKey="Mazzoni M" first="M." last="Mazzoni">M. Mazzoni</name><affiliation wicri:level="1"><country xml:lang="fr">Italie</country><wicri:regionArea>Dipartimento di Astronomia, Universita' di Firenze, L.E. Fermi 5, I-50100 Firenze</wicri:regionArea><wicri:noRegion>I-50100 Firenze</wicri:noRegion></affiliation></author><author><name sortKey="Palla, F" sort="Palla, F" uniqKey="Palla F" first="F." last="Palla">F. Palla</name><affiliation wicri:level="3"><country xml:lang="fr">Italie</country><wicri:regionArea>INFN sezione di Pisa, Via livornese 1291, I-56010 S. Piero a Grado, Pisa</wicri:regionArea><placeName><settlement type="city">Pise</settlement><region nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Hui Bao, Pan" sort="Hui Bao, Pan" uniqKey="Hui Bao P" first="Pan" last="Hui Bao">Pan Hui Bao</name><affiliation wicri:level="3"><country xml:lang="fr">Italie</country><wicri:regionArea>INFN sezione di Pisa, Via livornese 1291, I-56010 S. Piero a Grado, Pisa</wicri:regionArea><placeName><settlement type="city">Pise</settlement><region nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Paoletti, F" sort="Paoletti, F" uniqKey="Paoletti F" first="F." last="Paoletti">F. Paoletti</name><affiliation wicri:level="3"><country xml:lang="fr">Italie</country><wicri:regionArea>INFN sezione di Pisa, Via livornese 1291, I-56010 S. Piero a Grado, Pisa</wicri:regionArea><placeName><settlement type="city">Pise</settlement><region nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Pasqualetti, A" sort="Pasqualetti, A" uniqKey="Pasqualetti A" first="A." last="Pasqualetti">A. Pasqualetti</name><affiliation wicri:level="3"><country xml:lang="fr">Italie</country><wicri:regionArea>INFN sezione di Pisa, Via livornese 1291, I-56010 S. Piero a Grado, Pisa</wicri:regionArea><placeName><settlement type="city">Pise</settlement><region nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Passaquieti, R" sort="Passaquieti, R" uniqKey="Passaquieti R" first="R." last="Passaquieti">R. Passaquieti</name><affiliation wicri:level="1"><country xml:lang="fr">Italie</country><wicri:regionArea>Galli and Morelli, via Cristofani 558, I-55100 Acquacalda</wicri:regionArea><wicri:noRegion>I-55100 Acquacalda</wicri:noRegion></affiliation></author><author><name sortKey="Passuello, D" sort="Passuello, D" uniqKey="Passuello D" first="D." last="Passuello">D. Passuello</name><affiliation wicri:level="3"><country xml:lang="fr">Italie</country><wicri:regionArea>INFN sezione di Pisa, Via livornese 1291, I-56010 S. Piero a Grado, Pisa</wicri:regionArea><placeName><settlement type="city">Pise</settlement><region nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Poggiani, R" sort="Poggiani, R" uniqKey="Poggiani R" first="R." last="Poggiani">R. Poggiani</name><affiliation wicri:level="4"><country xml:lang="fr">Italie</country><wicri:regionArea>Dipartimento di Fisica, Universita' di Pisa, piazza Torricelli 2, I-56100 Pisa</wicri:regionArea><orgName type="university">Université de Pise</orgName><placeName><settlement type="city">Pise</settlement><region type="region" nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Popolizio, P" sort="Popolizio, P" uniqKey="Popolizio P" first="P." last="Popolizio">P. Popolizio</name><affiliation wicri:level="3"><country xml:lang="fr">Italie</country><wicri:regionArea>INFN sezione di Pisa, Via livornese 1291, I-56010 S. Piero a Grado, Pisa</wicri:regionArea><placeName><settlement type="city">Pise</settlement><region nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Raffaelli, F" sort="Raffaelli, F" uniqKey="Raffaelli F" first="F." last="Raffaelli">F. Raffaelli</name><affiliation wicri:level="3"><country xml:lang="fr">Italie</country><wicri:regionArea>INFN sezione di Pisa, Via livornese 1291, I-56010 S. Piero a Grado, Pisa</wicri:regionArea><placeName><settlement type="city">Pise</settlement><region nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Righetti, D" sort="Righetti, D" uniqKey="Righetti D" first="D." last="Righetti">D. Righetti</name><affiliation wicri:level="4"><country xml:lang="fr">Italie</country><wicri:regionArea>Facolta' d'ingegneria, Universita' di Pisa, Via Diotisalvi 2, 56100 Pisa</wicri:regionArea><placeName><settlement type="city">Pise</settlement><region nuts="2">Toscane</region><settlement type="city">Pise</settlement></placeName><orgName type="university">Université de Pise</orgName></affiliation></author><author><name sortKey="Ruberti, R" sort="Ruberti, R" uniqKey="Ruberti R" first="R." last="Ruberti">R. Ruberti</name><affiliation wicri:level="4"><country xml:lang="fr">Italie</country><wicri:regionArea>Dipartimento di Fisica, Universita' di Pisa, piazza Torricelli 2, I-56100 Pisa</wicri:regionArea><orgName type="university">Université de Pise</orgName><placeName><settlement type="city">Pise</settlement><region type="region" nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Rubino, V" sort="Rubino, V" uniqKey="Rubino V" first="V." last="Rubino">V. Rubino</name><affiliation wicri:level="4"><country xml:lang="fr">Italie</country><wicri:regionArea>Dipartimento di Fisica, Universita' di Pisa, piazza Torricelli 2, I-56100 Pisa</wicri:regionArea><orgName type="university">Université de Pise</orgName><placeName><settlement type="city">Pise</settlement><region type="region" nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Ruggi, P" sort="Ruggi, P" uniqKey="Ruggi P" first="P." last="Ruggi">P. Ruggi</name><affiliation wicri:level="4"><country xml:lang="fr">Italie</country><wicri:regionArea>Dipartimento di Fisica, Universita' di Pisa, piazza Torricelli 2, I-56100 Pisa</wicri:regionArea><orgName type="university">Université de Pise</orgName><placeName><settlement type="city">Pise</settlement><region type="region" nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Stanga, R" sort="Stanga, R" uniqKey="Stanga R" first="R." last="Stanga">R. Stanga</name><affiliation wicri:level="1"><country xml:lang="fr">Italie</country><wicri:regionArea>Dipartimento di Astronomia, Universita' di Firenze, L.E. Fermi 5, I-50100 Firenze</wicri:regionArea><wicri:noRegion>I-50100 Firenze</wicri:noRegion></affiliation></author><author><name sortKey="Taddei, R" sort="Taddei, R" uniqKey="Taddei R" first="R." last="Taddei">R. Taddei</name><affiliation wicri:level="4"><country xml:lang="fr">Italie</country><wicri:regionArea>Dipartimento di Fisica, Universita' di Pisa, piazza Torricelli 2, I-56100 Pisa</wicri:regionArea><orgName type="university">Université de Pise</orgName><placeName><settlement type="city">Pise</settlement><region type="region" nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Valentini, R" sort="Valentini, R" uniqKey="Valentini R" first="R." last="Valentini">R. Valentini</name><affiliation wicri:level="4"><country xml:lang="fr">Italie</country><wicri:regionArea>Facolta' d'ingegneria, Universita' di Pisa, Via Diotisalvi 2, 56100 Pisa</wicri:regionArea><placeName><settlement type="city">Pise</settlement><region nuts="2">Toscane</region><settlement type="city">Pise</settlement></placeName><orgName type="university">Université de Pise</orgName></affiliation></author><author><name sortKey="Vicere, A" sort="Vicere, A" uniqKey="Vicere A" first="A." last="Vicere">A. Vicere</name><affiliation wicri:level="3"><country xml:lang="fr">Italie</country><wicri:regionArea>INFN sezione di Pisa, Via livornese 1291, I-56010 S. Piero a Grado, Pisa</wicri:regionArea><placeName><settlement type="city">Pise</settlement><region nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Winterflood, J" sort="Winterflood, J" uniqKey="Winterflood J" first="J." last="Winterflood">J. Winterflood</name><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>Physics dept., University of Western Australia, Crawley, Perth</wicri:regionArea><wicri:noRegion>Perth</wicri:noRegion></affiliation></author><author><name sortKey="Zhou, Zhang" sort="Zhou, Zhang" uniqKey="Zhou Z" first="Zhang" last="Zhou">Zhang Zhou</name><affiliation wicri:level="3"><country xml:lang="fr">Italie</country><wicri:regionArea>INFN sezione di Pisa, Via livornese 1291, I-56010 S. Piero a Grado, Pisa</wicri:regionArea><placeName><settlement type="city">Pise</settlement><region nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Bernardini, M" sort="Bernardini, M" uniqKey="Bernardini M" first="M." last="Bernardini">M. Bernardini</name><affiliation wicri:level="3"><country xml:lang="fr">Italie</country><wicri:regionArea>INFN sezione di Pisa, Via livornese 1291, I-56010 S. Piero a Grado, Pisa</wicri:regionArea><placeName><settlement type="city">Pise</settlement><region nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Bozzi, A" sort="Bozzi, A" uniqKey="Bozzi A" first="A." last="Bozzi">A. Bozzi</name><affiliation wicri:level="3"><country xml:lang="fr">Italie</country><wicri:regionArea>INFN sezione di Pisa, Via livornese 1291, I-56010 S. Piero a Grado, Pisa</wicri:regionArea><placeName><settlement type="city">Pise</settlement><region nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Braccini, S" sort="Braccini, S" uniqKey="Braccini S" first="S." last="Braccini">S. Braccini</name><affiliation wicri:level="3"><country xml:lang="fr">Italie</country><wicri:regionArea>INFN sezione di Pisa, Via livornese 1291, I-56010 S. Piero a Grado, Pisa</wicri:regionArea><placeName><settlement type="city">Pise</settlement><region nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Bradaschia, C" sort="Bradaschia, C" uniqKey="Bradaschia C" first="C." last="Bradaschia">C. Bradaschia</name><affiliation wicri:level="3"><country xml:lang="fr">Italie</country><wicri:regionArea>INFN sezione di Pisa, Via livornese 1291, I-56010 S. Piero a Grado, Pisa</wicri:regionArea><placeName><settlement type="city">Pise</settlement><region nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Casciano, C" sort="Casciano, C" uniqKey="Casciano C" first="C." last="Casciano">C. Casciano</name><affiliation wicri:level="1"><country xml:lang="fr">Italie</country><wicri:regionArea>Galli and Morelli, via Cristofani 558, I-55100 Acquacalda</wicri:regionArea><wicri:noRegion>I-55100 Acquacalda</wicri:noRegion></affiliation></author><author><name sortKey="Cella, G C" sort="Cella, G C" uniqKey="Cella G" first="G. C." last="Cella">G. C. Cella</name><affiliation wicri:level="4"><country xml:lang="fr">Italie</country><wicri:regionArea>Dipartimento di Fisica, Universita' di Pisa, piazza Torricelli 2, I-56100 Pisa</wicri:regionArea><orgName type="university">Université de Pise</orgName><placeName><settlement type="city">Pise</settlement><region type="region" nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Ciampa, A" sort="Ciampa, A" uniqKey="Ciampa A" first="A." last="Ciampa">A. Ciampa</name><affiliation wicri:level="3"><country xml:lang="fr">Italie</country><wicri:regionArea>INFN sezione di Pisa, Via livornese 1291, I-56010 S. Piero a Grado, Pisa</wicri:regionArea><placeName><settlement type="city">Pise</settlement><region nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Curci, G" sort="Curci, G" uniqKey="Curci G" first="G." last="Curci">G. Curci</name><affiliation wicri:level="4"><country xml:lang="fr">Italie</country><wicri:regionArea>Dipartimento di Fisica, Universita' di Pisa, piazza Torricelli 2, I-56100 Pisa</wicri:regionArea><orgName type="university">Université de Pise</orgName><placeName><settlement type="city">Pise</settlement><region type="region" nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="D Ambrosio, E" sort="D Ambrosio, E" uniqKey="D Ambrosio E" first="E." last="D'Ambrosio">E. D'Ambrosio</name><affiliation wicri:level="4"><country xml:lang="fr">Italie</country><wicri:regionArea>Dipartimento di Fisica, Universita' di Pisa, piazza Torricelli 2, I-56100 Pisa</wicri:regionArea><orgName type="university">Université de Pise</orgName><placeName><settlement type="city">Pise</settlement><region type="region" nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Dattilo, V" sort="Dattilo, V" uniqKey="Dattilo V" first="V." last="Dattilo">V. Dattilo</name><affiliation wicri:level="3"><country xml:lang="fr">Italie</country><wicri:regionArea>INFN sezione di Pisa, Via livornese 1291, I-56010 S. Piero a Grado, Pisa</wicri:regionArea><placeName><settlement type="city">Pise</settlement><region nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Decarolis, G C" sort="Decarolis, G C" uniqKey="Decarolis G" first="G. C." last="Decarolis">G. C. Decarolis</name><affiliation wicri:level="3"><country xml:lang="fr">Italie</country><wicri:regionArea>INFN sezione di Pisa, Via livornese 1291, I-56010 S. Piero a Grado, Pisa</wicri:regionArea><placeName><settlement type="city">Pise</settlement><region nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Delapierre, A" sort="Delapierre, A" uniqKey="Delapierre A" first="A." last="Delapierre">A. Delapierre</name><affiliation wicri:level="1"><country xml:lang="fr">France</country><wicri:regionArea>INSA, 20 Avenue A. Einstein, F-69621 Villeurbanne</wicri:regionArea><wicri:noRegion>69621 Villeurbanne</wicri:noRegion><wicri:noRegion>F-69621 Villeurbanne</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Nuclear Inst. and Methods in Physics Research, A</title><title level="j" type="abbrev">NIMA</title><idno type="ISSN">0168-9002</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1999">1999</date><biblScope unit="volume">420</biblScope><biblScope unit="issue">1–2</biblScope><biblScope unit="page" from="316">316</biblScope><biblScope unit="page" to="335">335</biblScope></imprint><idno type="ISSN">0168-9002</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0168-9002</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Accelerometer signal</term><term>Actuation</term><term>Actuator</term><term>Angular accelerometer</term><term>Angular oscillation</term><term>Attenuation</term><term>Attenuation plateau</term><term>Attenuation properties</term><term>Attenuator</term><term>Blade</term><term>Blade thickness</term><term>Blade tips</term><term>Braccini</term><term>Cabling</term><term>Cantilever blades</term><term>Central column</term><term>Coil</term><term>Crossbar</term><term>Crossbar recoil</term><term>Crossbar resonance</term><term>Desalvo</term><term>Design considerations</term><term>Displacement curve</term><term>Dissipation</term><term>Dynamic range</term><term>Elsevier science</term><term>Excitation</term><term>Feedback</term><term>Feedback loop</term><term>Feedback loops</term><term>Frequency band</term><term>Frequency range</term><term>Hammer blows</term><term>Horizontal accelerometer</term><term>Horizontal accelerometers</term><term>Horizontal lvdt</term><term>Horizontal mode couplings</term><term>Horizontal plane</term><term>Instr</term><term>Internal dissipation</term><term>Inverted pendulum</term><term>Inverted pendulum table</term><term>Italy dipartimento</term><term>Locking actuators</term><term>Lowest frequency</term><term>Lter</term><term>Lter body</term><term>Lter body magnet matrix</term><term>Lters</term><term>Lvdt</term><term>Magnet</term><term>Magnetic matrices</term><term>Maraging blades</term><term>Matrix</term><term>Matrix surface</term><term>Mechanical spring</term><term>Meth</term><term>Micrometric table</term><term>Motion attenuation</term><term>Noise suppression</term><term>Open circuit</term><term>Oscillation</term><term>Particular care</term><term>Payload</term><term>Payload rotation</term><term>Pendulum</term><term>Phys</term><term>Pisa</term><term>Power consumption</term><term>Prototype</term><term>Quality factor</term><term>Reference plate</term><term>Residual motion</term><term>Resonant frequencies</term><term>Resonant frequency</term><term>Seismic</term><term>Seismic activity</term><term>Seismic motion</term><term>Single wire</term><term>Small counterweight</term><term>Spring blades</term><term>Super attenuator</term><term>Suspension blade</term><term>Suspension blades</term><term>Suspension force</term><term>Suspension point</term><term>Suspension point adjustment screw</term><term>Suspension wire</term><term>Symmetry axis</term><term>Test mass</term><term>Thermal excursions</term><term>Thermal instabilities</term><term>Transfer function</term><term>Tunable blade mechanism</term><term>Ultralow frequency</term><term>Vertical</term><term>Vertical accelerometer</term><term>Vertical attenuation</term><term>Vertical component</term><term>Vertical direction</term><term>Vertical displacement</term><term>Vertical lvdt</term><term>Vertical motion</term><term>Vertical movement</term><term>Vertical oscillation</term><term>Vertical oscillations</term><term>Vertical resonance</term><term>Virgo</term><term>Virgo collaboration</term><term>Voice coil actuator</term><term>Voice coils</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Accelerometer signal</term><term>Actuation</term><term>Actuator</term><term>Angular accelerometer</term><term>Angular oscillation</term><term>Attenuation</term><term>Attenuation plateau</term><term>Attenuation properties</term><term>Attenuator</term><term>Blade</term><term>Blade thickness</term><term>Blade tips</term><term>Braccini</term><term>Cabling</term><term>Cantilever blades</term><term>Central column</term><term>Coil</term><term>Crossbar</term><term>Crossbar recoil</term><term>Crossbar resonance</term><term>Desalvo</term><term>Design considerations</term><term>Displacement curve</term><term>Dissipation</term><term>Dynamic range</term><term>Elsevier science</term><term>Excitation</term><term>Feedback</term><term>Feedback loop</term><term>Feedback loops</term><term>Frequency band</term><term>Frequency range</term><term>Hammer blows</term><term>Horizontal accelerometer</term><term>Horizontal accelerometers</term><term>Horizontal lvdt</term><term>Horizontal mode couplings</term><term>Horizontal plane</term><term>Instr</term><term>Internal dissipation</term><term>Inverted pendulum</term><term>Inverted pendulum table</term><term>Italy dipartimento</term><term>Locking actuators</term><term>Lowest frequency</term><term>Lter</term><term>Lter body</term><term>Lter body magnet matrix</term><term>Lters</term><term>Lvdt</term><term>Magnet</term><term>Magnetic matrices</term><term>Maraging blades</term><term>Matrix</term><term>Matrix surface</term><term>Mechanical spring</term><term>Meth</term><term>Micrometric table</term><term>Motion attenuation</term><term>Noise suppression</term><term>Open circuit</term><term>Oscillation</term><term>Particular care</term><term>Payload</term><term>Payload rotation</term><term>Pendulum</term><term>Phys</term><term>Pisa</term><term>Power consumption</term><term>Prototype</term><term>Quality factor</term><term>Reference plate</term><term>Residual motion</term><term>Resonant frequencies</term><term>Resonant frequency</term><term>Seismic</term><term>Seismic activity</term><term>Seismic motion</term><term>Single wire</term><term>Small counterweight</term><term>Spring blades</term><term>Super attenuator</term><term>Suspension blade</term><term>Suspension blades</term><term>Suspension force</term><term>Suspension point</term><term>Suspension point adjustment screw</term><term>Suspension wire</term><term>Symmetry axis</term><term>Test mass</term><term>Thermal excursions</term><term>Thermal instabilities</term><term>Transfer function</term><term>Tunable blade mechanism</term><term>Ultralow frequency</term><term>Vertical</term><term>Vertical accelerometer</term><term>Vertical attenuation</term><term>Vertical component</term><term>Vertical direction</term><term>Vertical displacement</term><term>Vertical lvdt</term><term>Vertical motion</term><term>Vertical movement</term><term>Vertical oscillation</term><term>Vertical oscillations</term><term>Vertical resonance</term><term>Virgo</term><term>Virgo collaboration</term><term>Voice coil actuator</term><term>Voice coils</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Charge utile</term><term>Prototype</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract: An ultralow resonant frequency vertical seismic activity attenuation filter prototype has been designed and built as the vertical component of a Pre-Isolation Stage (PIS) for low-frequency Seismic Attenuation (SA) chains. The task of the PIS is to reduce the excitation of the chain payload's resonant residual motions. A characterization and the performance of the prototype are reported along with some design considerations. An attenuation of 45dB has been achieved in the region of interest (the SA chain resonant frequency band) and an upgrade to more than 50dB attenuation is easily achievable. Tests of active feedback loop attenuation driven by electro magnetic actuators and controlled by a Digital Signal Processor reading a precision vertical accelerometer have been successfully performed. The filter also effectively acts as a precision positioner for the suspended payload.</div></front></TEI><affiliations><list><country><li>Australie</li><li>France</li><li>Italie</li><li>États-Unis</li></country><region><li>Toscane</li></region><settlement><li>Pise</li></settlement><orgName><li>Université de Pise</li></orgName></list><tree><country name="Italie"><region name="Toscane"><name sortKey="Desalvo, R" sort="Desalvo, R" uniqKey="Desalvo R" first="R." last="Desalvo">R. Desalvo</name></region><name sortKey="Bernardini, M" sort="Bernardini, M" uniqKey="Bernardini M" first="M." last="Bernardini">M. Bernardini</name><name sortKey="Bozzi, A" sort="Bozzi, A" uniqKey="Bozzi A" first="A." last="Bozzi">A. Bozzi</name><name sortKey="Braccini, S" sort="Braccini, S" uniqKey="Braccini S" first="S." last="Braccini">S. Braccini</name><name sortKey="Bradaschia, C" sort="Bradaschia, C" uniqKey="Bradaschia C" first="C." last="Bradaschia">C. Bradaschia</name><name sortKey="Casciano, C" sort="Casciano, C" uniqKey="Casciano C" first="C." last="Casciano">C. Casciano</name><name sortKey="Cella, G C" sort="Cella, G C" uniqKey="Cella G" first="G. C." last="Cella">G. C. Cella</name><name sortKey="Ciampa, A" sort="Ciampa, A" uniqKey="Ciampa A" first="A." last="Ciampa">A. Ciampa</name><name sortKey="Curci, G" sort="Curci, G" uniqKey="Curci G" first="G." last="Curci">G. Curci</name><name sortKey="D Ambrosio, E" sort="D Ambrosio, E" uniqKey="D Ambrosio E" first="E." last="D'Ambrosio">E. D'Ambrosio</name><name sortKey="Dattilo, V" sort="Dattilo, V" uniqKey="Dattilo V" first="V." last="Dattilo">V. Dattilo</name><name sortKey="Decarolis, G C" sort="Decarolis, G C" uniqKey="Decarolis G" first="G. C." last="Decarolis">G. C. Decarolis</name><name sortKey="Divirgilio, A" sort="Divirgilio, A" uniqKey="Divirgilio A" first="A." last="Divirgilio">A. Divirgilio</name><name sortKey="Errico, A" sort="Errico, A" uniqKey="Errico A" first="A." last="Errico">A. Errico</name><name sortKey="Ferrante, I" sort="Ferrante, I" uniqKey="Ferrante I" first="I." last="Ferrante">I. Ferrante</name><name sortKey="Frasconi, F" sort="Frasconi, F" uniqKey="Frasconi F" first="F." last="Frasconi">F. Frasconi</name><name sortKey="Gaddi, A" sort="Gaddi, A" uniqKey="Gaddi A" first="A." last="Gaddi">A. Gaddi</name><name sortKey="Gennai, A" sort="Gennai, A" uniqKey="Gennai A" first="A." last="Gennai">A. Gennai</name><name sortKey="Gennaro, G" sort="Gennaro, G" uniqKey="Gennaro G" first="G." last="Gennaro">G. Gennaro</name><name sortKey="Giazotto, A" sort="Giazotto, A" uniqKey="Giazotto A" first="A." last="Giazotto">A. Giazotto</name><name sortKey="Guotong, Feng" sort="Guotong, Feng" uniqKey="Guotong F" first="Feng" last="Guotong">Feng Guotong</name><name sortKey="Hui Bao, Pan" sort="Hui Bao, Pan" uniqKey="Hui Bao P" first="Pan" last="Hui Bao">Pan Hui Bao</name><name sortKey="Losurdo, G" sort="Losurdo, G" uniqKey="Losurdo G" first="G." last="Losurdo">G. Losurdo</name><name sortKey="Maggiore, M" sort="Maggiore, M" uniqKey="Maggiore M" first="M." last="Maggiore">M. Maggiore</name><name sortKey="Mancini, S" sort="Mancini, S" uniqKey="Mancini S" first="S." last="Mancini">S. Mancini</name><name sortKey="Mazzoni, M" sort="Mazzoni, M" uniqKey="Mazzoni M" first="M." last="Mazzoni">M. Mazzoni</name><name sortKey="Palla, F" sort="Palla, F" uniqKey="Palla F" first="F." last="Palla">F. Palla</name><name sortKey="Paoletti, F" sort="Paoletti, F" uniqKey="Paoletti F" first="F." last="Paoletti">F. Paoletti</name><name sortKey="Pasqualetti, A" sort="Pasqualetti, A" uniqKey="Pasqualetti A" first="A." last="Pasqualetti">A. Pasqualetti</name><name sortKey="Passaquieti, R" sort="Passaquieti, R" uniqKey="Passaquieti R" first="R." last="Passaquieti">R. Passaquieti</name><name sortKey="Passuello, D" sort="Passuello, D" uniqKey="Passuello D" first="D." last="Passuello">D. Passuello</name><name sortKey="Poggiani, R" sort="Poggiani, R" uniqKey="Poggiani R" first="R." last="Poggiani">R. Poggiani</name><name sortKey="Popolizio, P" sort="Popolizio, P" uniqKey="Popolizio P" first="P." last="Popolizio">P. Popolizio</name><name sortKey="Raffaelli, F" sort="Raffaelli, F" uniqKey="Raffaelli F" first="F." last="Raffaelli">F. Raffaelli</name><name sortKey="Righetti, D" sort="Righetti, D" uniqKey="Righetti D" first="D." last="Righetti">D. Righetti</name><name sortKey="Ruberti, R" sort="Ruberti, R" uniqKey="Ruberti R" first="R." last="Ruberti">R. Ruberti</name><name sortKey="Rubino, V" sort="Rubino, V" uniqKey="Rubino V" first="V." last="Rubino">V. Rubino</name><name sortKey="Ruggi, P" sort="Ruggi, P" uniqKey="Ruggi P" first="P." last="Ruggi">P. Ruggi</name><name sortKey="Stanga, R" sort="Stanga, R" uniqKey="Stanga R" first="R." last="Stanga">R. Stanga</name><name sortKey="Taddei, R" sort="Taddei, R" uniqKey="Taddei R" first="R." last="Taddei">R. Taddei</name><name sortKey="Valentini, R" sort="Valentini, R" uniqKey="Valentini R" first="R." last="Valentini">R. Valentini</name><name sortKey="Vicere, A" sort="Vicere, A" uniqKey="Vicere A" first="A." last="Vicere">A. Vicere</name><name sortKey="Zhou, Zhang" sort="Zhou, Zhang" uniqKey="Zhou Z" first="Zhang" last="Zhou">Zhang Zhou</name></country><country name="États-Unis"><noRegion><name sortKey="Holloway, L" sort="Holloway, L" uniqKey="Holloway L" first="L." last="Holloway">L. Holloway</name></noRegion></country><country name="Australie"><noRegion><name sortKey="Winterflood, J" sort="Winterflood, J" uniqKey="Winterflood J" first="J." last="Winterflood">J. Winterflood</name></noRegion></country><country name="France"><noRegion><name sortKey="Delapierre, A" sort="Delapierre, A" uniqKey="Delapierre A" first="A." last="Delapierre">A. Delapierre</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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|texte= Performances of an ultralow frequency vertical pre-isolator for the VIRGO seismic attenuation chains
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