A5041903794- Particle Accelerators and Free-Electron Lasers
- Advanced X-ray Imaging Techniques
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Advanced Surface Polishing Techniques
- Particle accelerators and beam dynamics
- Advancements in Photolithography Techniques
- Crystallography and Radiation Phenomena
- Gyrotron and Vacuum Electronics Research
- Diamond and Carbon-based Materials Research
- Optical Systems and Laser Technology
- Physics of Superconductivity and Magnetism
- Medical Imaging Techniques and Applications
- Integrated Circuits and Semiconductor Failure Analysis
- Quantum, superfluid, helium dynamics
- Nuclear Physics and Applications
- Terahertz technology and applications
- Particle physics theoretical and experimental studies
- Advanced Measurement and Metrology Techniques
- Optical measurement and interference techniques
- Luminescence Properties of Advanced Materials
- Optical properties and cooling technologies in crystalline materials
- Hydrogen embrittlement and corrosion behaviors in metals
- Ultrasound Imaging and Elastography
- Nuclear reactor physics and engineering
Diamond Light Source
2017-2023
European Organization for Nuclear Research
2013-2015
Royal Holloway University of London
2014-2015
Wilmington University
2009
Abstract Realtime in situ temperature monitoring difficult experimental conditions or inaccessible environments is critical for many applications. Non-contact luminescence decay time thermometry often the method of choice such applications due to a favorable combination sensitivity, accuracy and robustness. In this work, we demonstrate feasibility an ultrafast PbI 2 scintillator determination, using structure X-ray radiation, produced by synchrotron. The kinetics scintillations was measured...
We report on the observation of incoherent Cherenkov radiation emitted by a 5.3 GeV positron beam circulating in Cornell electron-positron storage ring as passes close vicinity surface fused silica radiator (i.e., at distance larger than 0.8 mm). The shape was designed order to send photons towards detector, consisting compact optical system equipped with an intensified camera. allows both measurements 2D images and angular distribution including polarization study. corresponding light...
In recent years, there has been an increasing demand for noninvasive beam size monitoring on particle accelerators. Ideally, these monitors should be cost effective and require little or no maintenance. These also suitable both linear circular machines. Here, the experimental setup is described in detail, results from a diffraction radiation monitor are presented. This tested Cornell Electron Storage Ring using 1 mA ($1.6\ifmmode\times\else\texttimes\fi{}{10}^{10}$ particles per bunch)...
Charged particle beam diagnostics is a key task in modern and future accelerator installations. The diagnostic tools are practically the ``eyes'' of operators. precision resolution equipment crucial to define performance accelerator. Transition diffraction radiation (TR DR) widely used for electron parameter monitoring. However, those devices determined by how well production, transport detection these types understood. This paper reports on simulations TR DR spatial-spectral characteristics...
Two new Janis dilution refrigerators for scanning tunnelling microscopy (STM) in ultra-high vacuum (UHV) and magnetic field up to 15 Tesla are presented. Their design details, including differences between top bottom sample loading features described. Base temperature, cooling power, internal other experimental results discussed.
Charged particle beam diagnostics is a key task in modern and future accelerator installations. The diagnostic tools are practically the "eyes" of operators. Precision resolution equipment crucial to define performance. Transition Diffraction Radiation (TR DR) widely used for electron parameter monitoring. However, precision those devices determined by how well production, transportation detection these phenomena understood. This paper reports on initial simulations TR DR spatial...
Incoherent Cherenkov diffraction radiation was recently produced in the Cornell electron storage ring using counterpropagating beams (electrons and positrons) passing close vicinity of a dielectric made fused silica. We present this paper collection experimental investigations that were performed on both infrared visible range. Measurements an optical system functioning either imaging conditions or far field to retrieve angular distribution radiation. Polarization studies also showed that,...
The Compact Linear Collider (CLIC) is an e + /e - collider based on the two-beam acceleration principle, proposed to support precision high-energy physics experiments in energy range 0.5-3 TeV [1]. To achieve a high luminosity of up 6x10 34 cm -2 s -1 , transport and preservation low emittance beam mandatory. A large number great variety diagnostics instruments foreseen verify guarantee required quality. We discuss status developments experimental results accomplished at CLIC Test Facility...
Six UK institutes are engaged in a collaborative R&D programme with CERN aimed at demonstrating key aspects of technology feasibility for the Compact Linear Collider (CLIC). We give an overview and status of: 1) Drive-beam components: quadrupole magnets beam phase feed-forward prototype. 2) Beam instrumentation: stripline cavity position monitors, electro-optical longitudinal bunch profile monitor, laserwire diffraction transition radiation monitors transverse beam-size determination. 3)...
We have developed two custom designed bottom loading He-3 cryostats with sample in UHV space for basic research. The first cryostat is a single-shot, system Scanning Tunnelling Microscopy (STM) applications number of design enhancements. second continuous flow relatively high cooling power that sub-K Angular Resolution Photoemission Spectroscopy (ARPES). Design and performance details will be discussed.
Based on recent measurements of incoherent Cherenkov Diffraction Radiation (ChDR) performed the Cornell Electron Storage Ring, we present here a concept for centering charged particle beams when passing close to dielectric material. This would find applications as beam instrumentation in capillary tubes, typically used novel accelerating technologies, well collimators using bent crystals high-energy, high-intensity hadron beams, such Large Hadron Collid-er or Future Circular Collider. As...
Transition Radiation (TR) and Diffraction (DR) are produced when a relativistic charged particle moves through medium or in the vicinity of respectively. The target atoms polarised by electric field particle, which then oscillate thus emitting radiation with very broad spectrum. spatial-spectral properties TR/DR sensitive to various electron beam parameters. Several projects aim measure transverse (vertical) size using TR DR. This paper reports on recent studies Zemax, presenting finite...
Single-crystal chemical vapour deposition (CVD) diamond detectors are an established transmissive synchrotron beamline diagnostic instrument used for beam position and intensity monitoring. A recently commercialized alternative is silicon carbide (4H-SiC) devices. These have the potential to provide same information as commercially available single-crystal CVD X-ray monitors, but with a much larger aperture. At Diamond Light Source experimental comparison of performance 4H-SiC monitors has...
Diagnostics physicist Lorraine Bobb explains how a summer placement at Diamond Light Source helped her make an evidence-based decision about career path