Sökning: "Bunch length"

Visar resultat 1 - 5 av 11 avhandlingar innehållade orden Bunch length.

  1. 1. Timing Diagnostics and Coherent Harmonics from a test-FEL

    Författare :Nino Cutic; Lunds universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Free electron laser; undulator radiation; coherent harmonic generation; circular polariyation; vacuum ultra-violet; seed pulse timing; bunch length; electro-optical spectral decoding;

    Sammanfattning : The test free-electron laser (test-FEL) at MAX-lab in Lund demonstrated for the first time circularly polarized coherent femtosecond pulses at 66 nm wavelength. A 375 MeV electron bunch was seeded by a femtosecond laser at 263 nm and coherent harmonics were extracted in an APPLE-II type elliptical undulator. LÄS MER

  3. 2. Electron beam sizes and lifetimes at MAX II and MAX III

    Författare :Anders Rosborg; Lunds universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Electron accelerator; Storage ring; Synchrotron light source; Synchrotron radiation; Electron beam profile; Emittance; Beam size; Fysicumarkivet A:2012:Hansson; Lifetime; Bunch length; Landau cavities;

    Sammanfattning : The MAX II and MAX III synchrotron light sources at MAX-lab provide synchrotron radiation for experiments in a wide variety of research fields. The synchrotron radiation is emitted by ultra-relativistic electrons circulating in electron storage rings. LÄS MER

  4. 3. Studies on high brightness electron beams for short pulses and free electron laser

    Författare :Sara Thorin; Lunds universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; bunch compression; sub-ps pulses; X-rays; High brightness electron beam; free electron laser; electron accelerator; collective effects.;

    Sammanfattning : Accelerator based lightsources are one of the most powerful tools today for producing high intensity radiation at very short wavelengths. While synchrotron storage rings provide a high average brilliance in a wide wavelength range, the next generation of lightsources aim towards producing ultra-short pulses in the X-ray regime. LÄS MER

  5. 4. Timing Modes for the MAX IV Storage Rings

    Författare :Teresia Olsson; Lunds universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Synchrotron light storage rings; timing experiments; ultralow emittance; harmonic cavities; fill patterns; PPRE; PSB; Fysicumarkivet A:2018:Olsson;

    Sammanfattning : The MAX IV facility includes two storage rings, operated at 1.5 and 3 GeV energy, for the purpose of producing high-brilliance synchrotron radiation for users. The 1.5 GeV ring replaces the previous MAX II and MAX III storage rings as a source of UV and soft X-rays, whereas the 3 GeV ring is optimized for hard X-rays. LÄS MER

  7. 5. Higher harmonic cavities at 3rd generation synchrotron light sources

    Författare :Mattias Georgsson; Lunds universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Double RF system; Electron storage ring; Instabilities; Landau damping; Beam lifetime; Physics; Synchrotron radiation; Fysik;

    Sammanfattning : Synchrotron radiation is a tool widely used in science. It is produced by electron accelerators called storage rings. With the high performance of the 3rd generation synchrotron light sources, the scientific results are excellent. It is important to identify and overcome the limitations of a storage ring in order to enhance its performance. LÄS MER