Sökning: "space instrumentation"

Visar resultat 16 - 20 av 41 avhandlingar innehållade orden space instrumentation.

  1. 16. Development of an analytic Beam Model with non-linear Space-Charge Forces and Envelope Stability Studies

    Författare :Michael Holz; Volker Ziemann; Roger Ruber; Mohammad Eshraqi; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Space-charge—the repelling force of same-charged particles—is a major challenge in the development and application of high-current linear accelerators like spallation sources or accumulator rings. Understanding the dynamical behavior of the beam in its presence is imperative to prevent beam loss and subsequent detrimental effects. LÄS MER

  3. 17. Design, Characterization, and Calibration of Low-Noise Terahertz Receivers

    Författare :Olle Nyström; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; receiver characterization; instrumentation; antenna design; Radio astronomy; calibration; optics;

    Sammanfattning : This thesis is focused on the field of instrumentation for radio-astronomy and atmospheric science, and specifically deals with problems such as optical design and its verification, horn antennas and receiver optics’ components, different aspects of measurement systems in order to characterize low-noise THz receivers, and its calibration techniques.Ultra low-noise Terahertz receivers, used in radio-astronomy, are typically coupled to the telescope system through relay optics that provides guiding of the signal to the receiver frontend with minimal loss. LÄS MER

  4. 18. Development of the Wind and Air Temperature Sensor of the ExoMars 2022 HABIT Instrument

    Författare :Álvaro Soria-Salinas; María-Paz Zorzano Mier; Javier Martin-Torres; Patel Manish; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mars; Atmosphere; Heat transfer; Forced convection; Wind; Space instrumentation; Exploration; Atmospheric science; Atmosfärsvetenskap;

    Sammanfattning : This work presents the development, validation and calibration of the air temperature sensors (ATS) and the air and wind retrieval method of the HABIT (HabitAbility: Brines, Irradiation and Temperature) instrument. HABIT is one of the two European  payloads of the ESA/Roscosmos ExoMars 2022 mission that will land at Oxia Planum (18.20° N, 335. LÄS MER

  5. 19. The development of a spectrometer for 14 MeV neutrons from fusion

    Författare :Dan Aronsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; neutron spectrometer; plasma diagnostics; time-of-flight spectrometer; associated particle spectrometer; Neutron detection; proton detection; fusion reactor instrumentation; JET tokamak; proton recoil detector;

    Sammanfattning : .... LÄS MER

  7. 20. Combination of space-geodetic techniques in the era of VGOS and multi-GNSS

    Författare :Periklis Diamantidis; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Local Ties; EOP; Reference Systems; GNSS; VLBI; Combination on the Observation Level; multi-GNSS; Space Geodesy; VGOS;

    Sammanfattning : The definition and maintenance of accurate and stable Earth-fixed and inertial reference frames is crucial in studying, among else, geophysical and geodynamical phenomena, precise positioning, and space navigation. The tools used to this end are space-geodetic techniques, like e.g. LÄS MER