A5039904962- Geological Studies and Exploration
- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Geology and Paleoclimatology Research
- Superconducting Materials and Applications
- Hydrocarbon exploration and reservoir analysis
- Geochemistry and Geologic Mapping
- Geological and Geochemical Analysis
- Particle Detector Development and Performance
- Methane Hydrates and Related Phenomena
- Geological formations and processes
- Gyrotron and Vacuum Electronics Research
- Climate change and permafrost
- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Crystallography and Radiation Phenomena
- Radiation Therapy and Dosimetry
- Radiation Detection and Scintillator Technologies
- Geological Modeling and Analysis
- Muon and positron interactions and applications
- Pleistocene-Era Hominins and Archaeology
- Paleontology and Stratigraphy of Fossils
- Laser-Plasma Interactions and Diagnostics
- Electron and X-Ray Spectroscopy Techniques
- Advancements in Photolithography Techniques
Daresbury Laboratory
2002-2020
Natural Resources Canada
1997-2020
Sci-Tech Daresbury
2007-2020
Cockcroft Institute
2007-2020
University of Liverpool
2007-2020
Atomic Weapons Establishment
2014
Fermi National Accelerator Laboratory
2012-2013
Rutherford Appleton Laboratory
2010
University of Bonn
2008
University of Oxford
2008
An experiment (E166) at the Stanford Linear Accelerator Center has demonstrated a scheme in which multi-GeV electron beam passed through helical undulator to generate multi-MeV, circularly polarized photons were then converted thin target produce positrons (and electrons) with longitudinal polarization above 80% 6 MeV. The results are agreement Geant4 simulations that include dominant polarization-dependent interactions of electrons, positrons, and matter.Received 8 March...
The first demonstration of a full-scale working undulator module suitable for future TeV-scale positron-electron linear collider positron sources is presented. Generating sufficient positrons an important challenge these colliders, and using polarized ${e}^{+}$ would enhance the machine's capabilities. In undulator-based source are generated in metallic target via pair production initiated by circularly photons produced helical undulator. We show how design developed considering impedance...
The compact linear accelerator for research and applications (CLARA) is an ultrabright electron beam test facility being developed at STFC Daresbury Laboratory. ultimate aim of CLARA to advanced free laser (FEL) schemes that can later be implemented on existing future short-wavelength FELs. In addition, a unique provide high-quality novel concepts ideas in wide range disciplines function as technology demonstrator United Kingdom x-ray FEL facility. built three phases; the first phase, or...
The transverse phase space of a beam in an accelerator can be characterized using well-established methods based on observation changes the profile between screens at different locations along beamline, or single screen for strengths upstream quadrupoles. Studies CLARA FE (the Compact Linear Accelerator Research and Applications Front End, Daresbury Laboratory, UK) show that where has complicated (nonelliptical) distribution space, conventional analysis techniques aimed characterizing terms...
A method of producing a polarised positron beam from e <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">+</sup> xmlns:xlink="http://www.w3.org/1999/xlink">-</sup> pair production in target by circularly γ-radiation is being investigated. Polarised photons are to be generated the passage high energy electron (250 GeV as anticipated International Linear Collider - ILC) through helical undulator. For 20 MeV photons, an undulator with period 14 mm,...
An undulator based positron source is the baseline for International Linear Collider (ILC). The HeLiCal collaboration in UK working on development of a full scale 4-m long module. Several prototypes have been built and tested R&D phase programme that culminated manufacturing techniques suitable construction first sections. This paper details design status
An undulator based positron source is a baseline for the international linear collider (ILC). The HeLiCal collaboration in UK carrying out an R&D programme on short period superconducting helical with goal to develop modelling, measuring and manufacturing techniques. Several prototypes have been built successfully tested. This paper summarizes results of phase project.
A comparison of possible undulator designs for the International Linear Collider positron source has resulted in a superconducting bifilar wire design being selected. After comprehensive paper study and fabrication two preeminent designs, was chosen instead permanent magnet alternative. This because its superior performance terms magnetic field strength quality, operational flexibility, risk radiation damage, ease achieving required vacuum, cost. The will now be developed into complete...
The International Linear Collider (ILC) positron source uses a helical undulator to generate polarized photons of ∼10MeV at the first harmonic. Unlike many undulators used in synchrotron radiation sources, ILC vacuum chamber will be bombarded by photons, generated undulator, with energies mostly below that Achieving specification ∼100nTorr narrow 4–6mm inner diameter, long length 100–200m, makes design system challenging. This article describes specifications and calculations flux energy...