Sökning: "undulator"

Visar resultat 1 - 5 av 11 uppsatser innehållade ordet undulator.

1. 1. Prospects for a Free Electron Laser at the FemtoMAX Beamline

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

   Författare :Johan Holmberg; [2024]
   Nyckelord :Free Electron Lasers; FEL; synchrotron radiation; MAX IV; FemtoMAX; GENESIS 1.3; XFEL; X-rays; soft X-rays; Physics and Astronomy;

   Sammanfattning : A Free Electron Laser (FEL), is a device that generates extremely coherent and brilliant radiation using electrons accelerated to relativistic velocities in a particle accelerator. The process utilises similar equipment to what is used at a synchrotron source like MAX IV, but in addition there is an interaction between the relativistic electron beam and the generated radiation to achieve an exponential growth in radiation intensity. LÄS MER

3. 2. Generation of attosecond X-ray pulses in free-electron lasers using electron energy modulation and undulator tapering

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/FREIA

   Författare :Karl-Fredrik Boholm Kylesten; [2023]
   Nyckelord :attosecond; free-electron laser; XFEL; self-amplified spontaneous emission; SASE; tapering; energy modulation;

   Sammanfattning : Free-electron lasers (FELs) are among the world's most intense artificial artificial sources of coherent light and are tunable to various wavelengths, including the X-ray spectrum. X-ray FELs (XFELs) are extremely useful for diffraction experiments to study molecules, materials, and quantum systems. LÄS MER

4. 3. Feasibility Study of X-ray Free Electron Lasers in Fourth Generation Storage Rings

   Kandidat-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen; Lunds universitet/MAX IV-laboratoriet

   Författare :Jordis Hansen; [2023]
   Nyckelord :XFEL; Storage Ring; Synchrotron Radiation; Physics and Astronomy;

   Sammanfattning : This thesis studies the feasibility of a cavity based X-ray free electron laser in a fourth generation storage ring. The cavity design allows for modulation of the electron beam over several passes through the undulator. Simulations based on the PETRA IV facility are done to create the photon flux spectrum of a light pulse produced by an undulator. LÄS MER

5. 4. Simulations of stray radiation in the European XFEL undulators with the Geant4 toolkit

   Kandidat-uppsats, Stockholms universitet/Fysikum

   Författare :Guillermo Lopez Basurco; [2022]
   Nyckelord :Geant4; Monte Carlo simulations; XFEL undulators; gamma radiation flux;

   Sammanfattning : The European XFEL is an X-ray free electron laser research facility that generates ultrashort, high intensity flashes. Three SASE undulator systems are made of undulator segments and intersection components. LÄS MER

7. 5. Synchrotrons as a Source for Soft X-Ray Lithography

   Master-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

   Författare :Thomas Joseph Grandsaert Jr; [2021]
   Nyckelord :Physics and Astronomy;

   Sammanfattning : To move to lower modes in extreme ultra-violet lithography (EUVL) technology (and keep up with Moore’s law), new sources of soft X-ray radiation must be developed. It is clear from previous studies that Free Electron Lasers (FELs) can easily meet the in-band power requirements at these lower wavelength modes, however detailed studies for insertion devices (undulators) as a soft X-ray lithography (SXL) source are due for a re-evaluation. LÄS MER