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  1. AU="Hewitson, M"
  2. AU=Sismondo Sergio
  3. AU="Asali, Y" AU="Asali, Y"
  4. AU="Freitas Júnior, João Lima" AU="Freitas Júnior, João Lima"
  5. AU="Garrido-Baserba, Manel"
  6. AU="Rafał Poręba"
  7. AU=Ryu Sukhyun
  8. AU="Nasra, Simran"
  9. AU="Lee, Chen-Yi"
  10. AU="Michel, Chloé"
  11. AU="Virtanen, Jyrki K"
  12. AU=Hall Ryan C W AU=Hall Ryan C W
  13. AU="Kumari, Aakansha"
  14. AU=Ramkumar Pavan
  15. AU="Araujo, Deusa Teixeira"
  16. AU=Yang Mengling
  17. AU=Bria Carley
  18. AU="Melesse, Yekatit"
  19. AU="Camacho-Aguayo, Javier"
  20. AU="Zhou, Cong"
  21. AU="Hubner, P"
  22. AU="Suppanz, Ida"
  23. AU="Maria do Rosário Gondim Peixoto"
  24. AU="Lehto, Timo-Pekka K"
  25. AU="Bhattacharya, Joyeeta"
  26. AU="Gabriela Lopez‐Gonzalez"
  27. AU="South, Andrew M."
  28. AU="Skei, Sigmund"
  29. AU="Gillet, Jean‐François"
  30. AU="McKee, Mary"
  31. AU="Hajar Vaseghi"
  32. AU="M.Haney, "
  33. AU="R. Kappenberger"
  34. AU="Sempoux, Christine" AU="Sempoux, Christine"
  35. AU=Choi Wonseon
  36. AU=Gudowska-Sawczuk Monika AU=Gudowska-Sawczuk Monika
  37. AU="Roufosse, Florence"
  38. AU=Rugolotto Silvana
  39. AU="Herron, Benjamin"
  40. AU="Fernández Menéndez, Jorge"
  41. AU="Nguyen, Hang Tt"
  42. AU="Tahiri, M"
  43. AU=Zhang Ying-Ying
  44. AU="Warkaye, Samson"
  45. AU="Bavor, Claire"

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  1. Buch ; Online: New LISA dynamics feedback control scheme

    Inchauspé, Henri / Hewitson, Martin / Sauter, Orion / Wass, Peter

    Common-mode isolation of test mass control and probes of test-mass acceleration

    2022  

    Abstract: The Drag-Free and Attitude Control System is a central element of LISA technology, ensuring the very high dynamic stability of spacecraft and test masses required in order to reach the sensitivity that gravitational wave astronomy in space requires. ... ...

    Abstract The Drag-Free and Attitude Control System is a central element of LISA technology, ensuring the very high dynamic stability of spacecraft and test masses required in order to reach the sensitivity that gravitational wave astronomy in space requires. Applying electrostatic forces on test-masses is unavoidable but should be restricted to the minimum necessary to keep the spacecraft-test masses system in place, while granting the optimal quality of test-mass free-fall. To realise this, we propose a new test-mass suspension scheme that applies forces and torques only in proportion to any differential test mass motion observed, and we demonstrate that the new scheme significantly mitigates the amount of suspension forces and torques needed to control the whole system. The mathematical method involved allows us to derive a new observable measuring the differential acceleration of test masses projected on the relevant sensitive axes, which will have important consequences for LISA data calibration, processing and analysis.

    Comment: 17 pages, 9 figures
    Schlagwörter General Relativity and Quantum Cosmology
    Thema/Rubrik (Code) 629
    Erscheinungsdatum 2022-02-25
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  2. Buch ; Online: Germany and the Causes of the First World War

    Hewitson, Mark

    (Legacy of the Great War)

    2014  

    Abstract: How can we understand what caused World War I? What role did Germany play? This book encourages us to re-think the events that led to global conflict in 1914.Historians in recent years have argued that German leaders acted defensively or pre-emptively in ...

    Serientitel Legacy of the Great War
    Abstract How can we understand what caused World War I? What role did Germany play? This book encourages us to re-think the events that led to global conflict in 1914.Historians in recent years have argued that German leaders acted defensively or pre-emptively in 1914, conscious of the Reich's deteriorating military and diplomatic position. Germany and the Causes of the First World War challenges such interpretations, placing new emphasis on the idea that the Reich Chancellor, the German Foreign Office and the Great General Staff were confident that they could win a continental war. This belief in Germ
    Sprache Englisch
    Umfang Online-Ressource (493 p)
    Verlag Bloomsbury Publishing
    Erscheinungsort London
    Dokumenttyp Buch ; Online
    Anmerkung Description based upon print version of record
    ISBN 9781859738658 ; 1859738656
    Datenquelle Katalog der Technische Informationsbibliothek Hannover

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  3. Buch: Nationalism in Germany, 1848 - 1866

    Hewitson, Mark

    revolutionary nation

    (European studies series)

    2010  

    Verfasserangabe Mark Hewitson
    Serientitel European studies series
    Schlagwörter National characteristics, German ; Nationalism/History ; Nationalismus ; Germany ; Deutschland
    Sprache Englisch
    Umfang XIII, 462 S., graph. Darst., Kt.
    Verlag Palgrave Macmillan
    Erscheinungsort Basingstoke u.a.
    Dokumenttyp Buch
    ISBN 1403913307 ; 9781403913296 ; 9781403913302 ; 1403913293
    Datenquelle Ehemaliges Sondersammelgebiet Küsten- und Hochseefischerei

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  4. Buch: Germany and the causes of the First World War

    Hewitson, Mark

    (The legacy of the Great war)

    2004  

    Verfasserangabe Mark Hewitson
    Serientitel The legacy of the Great war
    Schlagwörter Vorgeschichte ; Weltkrieg ; Deutschland
    Sprache Englisch
    Umfang IX, 268 S., 22 cm
    Verlag Berg
    Erscheinungsort Oxford u.a.
    Dokumenttyp Buch
    Anmerkung Hier auch später erschienene, unveränderte Nachdrucke ; Literaturverz. S. 235 - 258
    ISBN 1859738656 ; 1859738702 ; 9781859738658 ; 9781859738702
    Datenquelle Ehemaliges Sondersammelgebiet Küsten- und Hochseefischerei

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  5. Buch ; Online: Germany and the causes of the First World War

    Hewitson, Mark

    (The Legacy of the Great War)

    2004  

    Abstract: How can we understand what caused World War I? What role did Germany play? This book encourages us to re-think the events that led to global conflict in 1914.Historians in recent years have argued that German leaders acted defensively or pre-emptively in ...

    Körperschaft ebrary, Inc
    Verfasserangabe Mark Hewitson
    Serientitel The Legacy of the Great War
    Abstract How can we understand what caused World War I? What role did Germany play? This book encourages us to re-think the events that led to global conflict in 1914.Historians in recent years have argued that German leaders acted defensively or pre-emptively in 1914, conscious of the Reich's deteriorating military and diplomatic position
    Schlagwörter Military planning/History ; World War, 1914-1918/Causes ; Germany
    Sprache Englisch
    Umfang Online-Ressource (ix, 268 p), 23 cm
    Verlag Berg
    Erscheinungsort Oxford, UK ;New York
    Dokumenttyp Buch ; Online
    Anmerkung Includes bibliographical references (p. 235-258) and index
    ISBN 1859738656 ; 1859738702 ; 9781859738658 ; 9781859738702
    Datenquelle Katalog der Technische Informationsbibliothek Hannover

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  6. Buch: National identity and political thought in Germany

    Hewitson, Mark

    Wilhelmine depictions of the French Third Republic, 1890 - 1914

    (Oxford historical monographs)

    2000  

    Verfasserangabe Mark Hewitson
    Serientitel Oxford historical monographs
    Sprache Englisch
    Umfang X, 288 S, 22 cm
    Verlag Clarendon u.a.
    Erscheinungsort Oxford u.a.
    Dokumenttyp Buch
    Anmerkung Literaturangaben
    ISBN 0198208588 ; 9780198208587
    Datenquelle Ehemaliges Sondersammelgebiet Küsten- und Hochseefischerei

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  7. Buch: National identity and political thought in Germany

    Hewitson, Mark

    Wilhelmine depictions of the French Third Republic, 1890 - 1914

    (Oxford historical monographs)

    2000  

    Verfasserangabe Mark Hewitson
    Serientitel Oxford historical monographs
    Sprache Englisch
    Umfang X, 288 S, 22 cm
    Verlag Clarendon u.a.
    Erscheinungsort Oxford u.a.
    Dokumenttyp Buch
    Anmerkung Literaturangaben
    ISBN 0198208588 ; 9780198208587
    Datenquelle Katalog der Technische Informationsbibliothek Hannover

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  8. Buch ; Online: National identity and political thought in Germany

    Hewitson, Mark

    Wilhelmine depictions of the French Third Republic, 1890-1914

    (Oxford historical monographs)

    2000  

    Abstract: This original study examines the interrelationship between the construction of national identity and the transformation of political thought in Germany before the First World War. By analysing Wilhelmine depictions of the French Third Republic, Hewitson ... ...

    Körperschaft ebrary, Inc
    Verfasserangabe Mark Hewitson
    Serientitel Oxford historical monographs
    Abstract This original study examines the interrelationship between the construction of national identity and the transformation of political thought in Germany before the First World War. By analysing Wilhelmine depictions of the French Third Republic, Hewitson revises accepted interpretations of German politics and nationalism. - ;This original study examines the interrelationship between the construction of national identity and the transformation of political thought in Germany before the First World War. During the decade or so before the war, the German Empire was challlenged openly by both left
    Schlagwörter Nationalism/History ; Public opinion/History ; France ; Germany
    Sprache Englisch
    Umfang Online-Ressource (x, 288 p)
    Verlag Clarendon Press ; Oxford University Press
    Erscheinungsort Oxford England ; Oxford England ;New York
    Dokumenttyp Buch ; Online
    Anmerkung Includes bibliographical references (p. [260]-283) and index
    ISBN 0198208588 ; 9780198208587
    Datenquelle Katalog der Technische Informationsbibliothek Hannover

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  9. Buch ; Online: NanoNewton electrostatic force actuators for femtoNewton-sensitive measurements

    Armano, M / Audley, H / Baird, J / Bassan, M / Binetruy, P / Born, M / Bortoluzzi, D / Castelli, E / Cavalleri, A / Cesarini, A / Chiavegato, V / Cruise, A M / Bosco, D Dal / Danzmann, K / Silva, M De Deus / De Rosa, R / Di Fiore, L / Diepholz, I / Dixon, G /
    Dolesi, R / Ferroni, L Ferraioli V / Fitzsimons, E D / Freschi, M / Gesa, L / Giardini, D / Gibert, F / Giusteri, R / Grado, A / Grimani, C / Grzymisch, J / Harrison, I / Hartig, M S / Heinzel, G / Hewitson, M / Hollington, D / Hoyland, D / Hueller, M / Inchauspé, H / Jennrich, O / Jetzer, P / Johlander, B / Karnesis, N / Kaune, B / Korsakova, N / Killow, C J / Liu, L / Lobo, J A / López-Zaragoza, J P / Maarschalkerweerd, R / Mance, D / Martín, V / Martin-Polo, L / Martin-Porqueras, F / Martino, J / McNamara, P W / Mendes, J / Mendes, L / Meshksar, N / Moerschell, J / Nofrarias, M / Paczkowski, S / Perreur-Lloyd, M / Petiteau, A / Plagnol, E / Praplan, C / Ramos-Castro, J / Reiche, J / Rivas, F / Robertson, D I / Russano, G / Sala, L / Sarra, P / Schule-Walewski, S L / Slutsky, J / Sopuerta, C F / Stanga, R / Sumner, T / Pierick, J ten / Texier, D / Thorpe, J I / Vetrugno, D / Vitale, S / Wanner, G / Ward, H / Wass, P / Weber, W J / Wissel, L / Wittchen, A / Zanoni, C / Zweifel, P

    system performance test in the LISA Pathfinder mission

    2023  

    Abstract: Electrostatic force actuation is a key component of the system of geodesic reference test masses (TM) for the LISA orbiting gravitational wave observatory and in particular for performance at low frequencies, below 1 mHz, where the observatory ... ...

    Abstract Electrostatic force actuation is a key component of the system of geodesic reference test masses (TM) for the LISA orbiting gravitational wave observatory and in particular for performance at low frequencies, below 1 mHz, where the observatory sensitivity is limited by stray force noise. The system needs to apply forces of order 10$^{-9}$ N while limiting fluctuations in the measurement band to levels approaching 10$^{-15}$ N/Hz$^{1/2}$. We present here the LISA actuation system design, based on audio-frequency voltage carrier signals, and results of its in-flight performance test with the LISA Pathfinder test mission. In LISA, TM force actuation is used to align the otherwise free-falling TM to the spacecraft-mounted optical metrology system, without any forcing along the critical gravitational wave-sensitive interferometry axes. In LISA Pathfinder, on the other hand, the actuation was used also to stabilize the TM along the critical $x$ axis joining the two TM, with the commanded actuation force entering directly into the mission's main differential acceleration science observable. The mission allowed demonstration of the full compatibility of the electrostatic actuation system with the LISA observatory requirements, including dedicated measurement campaigns to amplify, isolate, and quantify the two main force noise contributions from the actuation system, from actuator gain noise and from low frequency ``in band'' voltage fluctuations. These campaigns have shown actuation force noise to be a relevant, but not dominant, noise source in LISA Pathfinder and have allowed performance projections for the conditions expected in the LISA mission.
    Schlagwörter Astrophysics - Instrumentation and Methods for Astrophysics ; General Relativity and Quantum Cosmology
    Thema/Rubrik (Code) 621
    Erscheinungsdatum 2023-12-30
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  10. Artikel ; Online: Analysis of the accuracy of actuation electronics in the laser interferometer space antenna pathfinder.

    Armano, M / Audley, H / Baird, J / Born, M / Bortoluzzi, D / Cardines, N / Castelli, E / Cavalleri, A / Cesarini, A / Cruise, A M / Danzmann, K / de Deus Silva, M / Dixon, G / Dolesi, R / Ferraioli, L / Ferroni, V / Fitzsimons, E D / Freschi, M / Gesa, L /
    Giardini, D / Gibert, F / Giusteri, R / Grimani, C / Grzymisch, J / Harrison, I / Hartig, M-S / Heinzel, G / Hewitson, M / Hollington, D / Hoyland, D / Hueller, M / Inchauspé, H / Jennrich, O / Jetzer, P / Karnesis, N / Kaune, B / Killow, C J / Korsakova, N / López-Zaragoza, J P / Maarschalkerweerd, R / Mance, D / Martín, V / Martin-Polo, L / Martino, J / Martin-Porqueras, F / Mateos, I / McNamara, P W / Mendes, J / Mendes, L / Meshksar, N / Nofrarias, M / Paczkowski, S / Perreur-Lloyd, M / Petiteau, A / Pivato, P / Plagnol, E / Ramos-Castro, J / Reiche, J / Rivas, F / Robertson, D I / Russano, G / Slutsky, J / Sopuerta, C F / Sumner, T / Texier, D / Ten Pierick, J / Thorpe, J I / Vetrugno, D / Vitale, S / Wanner, G / Ward, H / Wass, P J / Weber, W J / Wissel, L / Wittchen, A / Zweifel, P

    The Review of scientific instruments

    2020  Band 91, Heft 4, Seite(n) 45003

    Abstract: The Laser Interferometer Space Antenna Pathfinder (LPF) main observable, labeled Δg, is the differential force per unit mass acting on the two test masses under free fall conditions after the contribution of all non-gravitational forces has been ... ...

    Abstract The Laser Interferometer Space Antenna Pathfinder (LPF) main observable, labeled Δg, is the differential force per unit mass acting on the two test masses under free fall conditions after the contribution of all non-gravitational forces has been compensated. At low frequencies, the differential force is compensated by an applied electrostatic actuation force, which then must be subtracted from the measured acceleration to obtain Δg. Any inaccuracy in the actuation force contaminates the residual acceleration. This study investigates the accuracy of the electrostatic actuation system and its impact on the LPF main observable. It is shown that the inaccuracy is mainly caused by the rounding errors in the waveform processing and also by the random error caused by the analog to digital converter random noise in the control loop. Both errors are one order of magnitude smaller than the resolution of the commanded voltages. We developed a simulator based on the LPF design to compute the close-to-reality actuation voltages and, consequently, the resulting actuation forces. The simulator is applied during post-processing the LPF data.
    Sprache Englisch
    Erscheinungsdatum 2020-05-01
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 209865-9
    ISSN 1089-7623 ; 0034-6748
    ISSN (online) 1089-7623
    ISSN 0034-6748
    DOI 10.1063/1.5140406
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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