Sökning: "3He"

Visar resultat 1 - 5 av 14 uppsatser innehållade ordet 3He.

  1. 1. Design and Fabrication of a Kinetic Inductance Parameric Amplifier for multi-mode entanglement studies

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Sara Persia; [2022]
    Nyckelord :Parametric amplifier; kinetic inductance; superconducting NbTiN nanowires; Parametrisk förstärkare; kinetisk induktans; supraledanden NbTiN- nanotrådar;

    Sammanfattning : Parametric amplifiers are essential for analyzing and measuring the weak signals generated byquantum circuits at cryogenic temperatures. This project aims to realize a low noise travelingwave parametric amplifier (TWPA) by exploiting the nonlinear current dependence of thekinetic inductance of superconducting NbTiN nanowires. LÄS MER

  3. 2. Constructing and commissioning of a Multi-Grid neutron detector prototype for the European Spallation Source

    Master-uppsats, Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen; Lunds universitet/European Spallation Source ESS AB

    Författare :Rebecka Wahlén; [2022]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : A prototype of a novel 10B-based neutron detector called the Multi-Grid detector has been constructed, tested and commissioned for the European Spallation Source (ESS). The detector is constructed after the specifications set by the CSPEC instrument at ESS and is therefore called the CSPEC Multi-Grid detector. LÄS MER

  4. 3. Magnetic field design for polarised neutrons in European Spallation Neutron Source instruments

    Kandidat-uppsats, Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

    Författare :Andrea Monzani; [2021]
    Nyckelord :FEM; COMSOL; uniform magnetic field; neutron scattering; European Spallation Source; neutron adiabaticity; neutron spin filtering; neutron spin transport; 3He polarisation analyser; Halbach coils; tetracoil; instrument design; neutron diffractometer; nuclear physics; material science; physics simulation; Physics and Astronomy;

    Sammanfattning : The goal of this project is the design of the magnetic field of the neutron analyser for the European Spallation Source instrument DREAM (Diffraction Resolved by Energy and Angle Measurements). This instrument is a neutron diffractometer and its purpose is the determination of the magnetic and chemical structure of materials. LÄS MER

  5. 4. Two-Dimensional Radiation Field Map of a Be-based Source

    Kandidat-uppsats, Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

    Författare :Henrik Söderhielm; [2017]
    Nyckelord :Nuclear Physics Particle Detectors Neutrons Gamma Rays European Spallation Source Lund University; Physics and Astronomy;

    Sammanfattning : The aim of this project was to measure the profile of the radiation exiting an aperture of the Aquarium at the Source Testing Facility at the Division of Nuclear Physics at Lund University. So far, the outgoing beam of radiation at the aperture of the Aquarium has been assumed to be uniform. LÄS MER

  7. 5. Modellering av radiovågsabsorbtion i fusionplasma

    Kandidat-uppsats, KTH/Skolan för elektro- och systemteknik (EES)

    Författare :Raymond Dawoid; [2017]
    Nyckelord :;

    Sammanfattning : I detta arbete har ett uppvärmningsscenario avfusionsplasma studerats med hjälp av en finita element modell.Mer specifikt undersöktes hur radiovågor absorberas i ettplasma som består av tre jonslag av typen väte, deuterium ochhelium-3. LÄS MER