Sökning: "Volker Ziemann"

Hittade 5 avhandlingar innehållade orden Volker Ziemann.

  1. 1. From Macroscopic to Microscopic Dynamics of Superconducting Cavities

    Författare :Anirban Bhattacharyya; Vitaliy Goryashko; Volker Ziemann; Roger Ruber; Jean Delayen; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; superconducting cavity; superconductivity; self-excited loop; Ginzburg-landau; vortex; optimization; quality factor; microwave; Fysik med inriktning mot elementarpartikelfysik; Physics with specialization in Elementary Particle Physics;

    Sammanfattning : Superconducting (SC) radio frequency (RF) cavities are at the heart of many large-scale particle accelerators such as the European Spallation Source (ESS), the X-ray Free Electron Laser (XFEL), the Linac Coherent Light Source (LCLS)-II and the proposed International Linear Collider (ILC). The SC cavities are essentially resonant structures with very high intrinsic quality factors (Q0) of the order of 1010. LÄS MER

  3. 2. 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

  4. 3. Emittance and Energy Diagnostics for Electron Beams with Large Momentum Spread

    Författare :Maja Olvegård; Volker Ziemann; Kay Wittenburg; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; beam instrumentation; particle beam diagnostic; emittance; particle collider; particle accelerator; High Energy Physics; Högenergifysik;

    Sammanfattning : Following the discovery of the Higgs-like boson at the Large Hadron Collider, there is demand for precision measurements on recent findings. The Compact Linear Collider, CLIC, is a candidate for a future linear electron-positron collider for such precision measurements. LÄS MER

  5. 4. Beam Momentum Changes due to Discharges in High-gradient Accelerator Structures

    Författare :Andrea Palaia; Volker Ziemann; Bernhard Holzer; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The key questions left unanswered by the Standard Model, and the recent discovery of a Standard Model-like Higgs boson, demand an extension of the research on particle physics to the TeV energy scale. The Compact Linear Collider, CLIC, is a candidate project to achieve such goal. LÄS MER

  7. 5. Beam Diagnostics and Dynamics in Nonlinear Fields

    Författare :Jim Ögren; Roger Ruber; Volker Ziemann; Klaus Leifer; Stephen Peggs; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Beam diagnostics; Nonlinear beam dynamics; Accelerator physics;

    Sammanfattning : Particle accelerators are indispensable tools for probing matter at the smallest scales and the improvements of such tools depend on the progress and understanding of accelerator physics. The Compact Linear Collider (CLIC) is a proposed, linear electron–­positron collider on the TeV-scale, based at CERN. LÄS MER