A5052921453- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Advanced X-ray Imaging Techniques
- Gyrotron and Vacuum Electronics Research
- Particle Detector Development and Performance
- Magnetic confinement fusion research
- Laser-Plasma Interactions and Diagnostics
- Particle physics theoretical and experimental studies
- International Science and Diplomacy
- Laser Design and Applications
- Photocathodes and Microchannel Plates
- Advanced Electron Microscopy Techniques and Applications
- Dark Matter and Cosmic Phenomena
- Physics of Superconductivity and Magnetism
- Semiconductor Lasers and Optical Devices
- Photonic and Optical Devices
- Crystallography and Radiation Phenomena
- Astronomy and Astrophysical Research
- Muon and positron interactions and applications
- X-ray Spectroscopy and Fluorescence Analysis
- Twentieth Century Scientific Developments
- Engineering Applied Research
- Polyoxometalates: Synthesis and Applications
- Quasicrystal Structures and Properties
Daresbury Laboratory
2010-2022
Cockcroft Institute
2007-2022
Sci-Tech Daresbury
2007-2022
Shenzhen University
2019
Rutherford Appleton Laboratory
2004-2010
University of Oxford
2008
University of Liverpool
2007-2008
Science and Technology Facilities Council
2008
Durham University
2007
London Metropolitan University
1972
The proposed construction of new particle accelerator-based facilities in the coming decades -- and upgrades to existing provides unique opportunity embed innovative environmental impact reduction techniques into their design. This living document high-level guidelines improve sustainability planning, construction, operational decommissioning stages large accelerator facilities. A collection various resources is provided, with examples some suggested practices.
Narrow band undulator radiation tuneable over the wavelength range of 150–260 nm has been produced by short electron bunches from a 2 mm long laser plasma wakefield accelerator based on 20 TW femtosecond system. The number photons measured is up to 9 × 106 per shot for 100 period undulator, with mean peak brilliance 1 1018 photons/s/mrad2/mm2/0.1% bandwidth. Simulations estimate that driving bunch r.m.s. duration as 3 fs when beam energy 120–130 MeV pulse in 50–100 fs.
This report describes the conceptual design of a proposed free electron laser test facility called CLARA that will be major upgrade to existing VELA accelerator at Daresbury Laboratory in UK. able number new schemes have been but require proof principle experiment confirm they perform as predicted. The primary focus on ultra short photon pulse generation which take lasers into whole regime, enabling area science emerge.
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 North West Structural Genomics Centre's beamline, MAD10, at the SRS receives central part of radiation fan (0.5 mrad vertically, 4 horizontally) produced by a new 2.46 T ten-pole wiggler. optical arrangement beamline consists Rh-coated collimating Si mirror, fixed-exit-beam double-crystal monochromator with sagittal bending for horizontal focusing and second mirror vertical focusing. (111) allows data collection in 5–13.5 keV photon energy range rapid (subsecond) tunability high...
The fourth generation of synchrotron radiation sources, commonly referred to as the Free Electron Laser (FEL), provides an intense source brilliant X-ray beams enabling investigation matter at atomic scale with unprecedented time resolution. These sources require use conventional linear accelerators providing high electron beam performance. achievement chirped pulse amplification allowing lasers be operated Terawatt range, opened way for Plasma Acceleration (LPA) technique where energy...
Microwave undulators have great potential to be used in short-wavelength free-electron lasers. In this paper, the properties of a corrugated waveguide and its performance as an undulator cavity for UK X-ray laser were systematically studied. The equations presented paper allow fast estimation dimensions waveguide. An operating at 36 GHz designed HE11 HE12 modes was investigated both compared.
Microwave undulators (MUs) can be an alternative to the permanent magnet in a free-electron laser. MUs normally employ cavity-type structure that supports standing wave boost electromagnetic field strength. In this paper, waveguide-type MU based on helically corrugated waveguide (HCW) traveling is studied. The use of HCW allows partial conversion mode into backward mode, hence increasing effective interaction length. When operating with TE11 at 30.3 GHz, was predicted realize strength ~0.3 T...
We present recent results obtained by the European Free Electron Laser (FEL) project at ELETTRA storage ring. Coherent and tunable light was produced in ultraviolet down to below 190 nm, shortest lasing wavelength so far with a FEL oscillator. The performance of is described, together series technical solutions that have been adopted on it. These increase its validity as source for applications, demonstrate potential oscillators become sources features vacuum ultraviolet.
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
We propose an approach to the optimization of segmented in-vacuum undulators, in which different segments along undulator may have gaps and periods. This enables close matching between vertical "envelope" electron beam motion a storage ring straight section (carefully satisfying associated "stay clear" constraint) and, at same time, precise tuning all fundamental photon energy. Placing together with periods introduce small kicks trajectories segment junctions, can be easily compensated,...
A novel type of highly tunable permanent magnet (PM) based quadrupole has been designed by the ZEPTO collaboration. prototype design (ZEPTO-Q1), intended to match specification for CLIC Drive Beam Decelerator, was built and magnetically measured at Daresbury Laboratory CERN. The utilises two pairs PMs which move in opposite directions along a single vertical axis produce gradient variable between 15 60 T/m. meets CLIC's challenging terms strength tunability magnet.
Consideration is now being given in the UK to provision of an advanced facility at lower energy complement DIAMOND x-ray light source. The proposed solution, 4GLS, a superconducting recovery linac (ERL) with output around 600 MeV, delivering both CW beam currents up 100 mA and alternatively high charge bunches for FEL applications. Production manipulation short electron (fs) vital part source specification. In addition lines from undulator sources ERL path there will be three FELs: two...