A5045099602- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Gyrotron and Vacuum Electronics Research
- Magnetic confinement fusion research
- Particle Detector Development and Performance
- Neutrino Physics Research
- Fusion materials and technologies
- Particle physics theoretical and experimental studies
- Census and Population Estimation
- Crystallography and Radiation Phenomena
- Dark Matter and Cosmic Phenomena
- Labor market dynamics and wage inequality
- Non-Destructive Testing Techniques
- Pulsed Power Technology Applications
- Plasma Diagnostics and Applications
- Nuclear reactor physics and engineering
- Advanced X-ray Imaging Techniques
- Graphite, nuclear technology, radiation studies
- Radiation Therapy and Dosimetry
- X-ray Spectroscopy and Fluorescence Analysis
- Labor Movements and Unions
- Optical Systems and Laser Technology
- Economics of Agriculture and Food Markets
- Quantum chaos and dynamical systems
Fermi National Accelerator Laboratory
1900-2024
Lawrence Livermore National Laboratory
2024
Proton (Malaysia)
2023
Royal Holloway University of London
2010-2020
University of Oxford
2008-2016
A novel scheme for the focusing of high-energy leptons in future linear colliders was proposed 2001 [P. Raimondi and A. Seryi, Phys. Rev. Lett. 86, 3779 (2001)]. This has many advantageous properties over previously studied schemes, including being significantly shorter a given energy having better bandwidth. Experimental results from ATF2 accelerator at KEK are presented that validate operating principle such by demonstrating demagnification 1.3 GeV electron beam down to below 65 nm height...
The Accelerator Test Facility 2 (ATF2) is a scaled demonstrator system for final focus beam lines of linear high energy colliders. This paper describes the resolution cavity position monitor (BPM) system, which part ATF2 diagnostics. Two types BPMs are used, C-band operating at 6.423 GHz, and S-band 2.888 GHz with an increased aperture. cavities, electronics, digital processing described. attenuators was determined to be approximately 250 nm 1 m system. Without attenuation best recorded 27 nm.
In order for sources of coherent high brightness and intensity THz x-ray radiation to be accepted by university or industrial R laboratories, truly compact, current efficient particle accelerators are required. The demand compactness efficiency can satisfied superconducting rf energy recovery linear (SRF ERL) allowing effectively minimizing the footprint maximizing system. However such setups affected regenerative beam break-up (BBU) instabilities which limit may terminate transport as well...
High average current, transportable energy recovery linacs (ERLs) can be very attractive tools for a number of applications including next generation high-luminosity, compact light sources. Conventional ERLs are based on an electron beam circulating through the same set rf cavity cells. This leads to accumulation high-order modes inside cells, resulting in development breakup (BBU) instability, unless current is kept below BBU start current. limits maximum which transported ERL and hence...
Abstract The unsteady heat transfer measurements about a transonic turbine blade at engine representative Mach and Reynolds numbers are presented. High density, fast-response thin film gauges employed the midheight streamline. A description of novel development gold together with brief overview their calibration signal processing is Detailed time phase-averaged have been obtained, providing insight into role upstream nozzle guide vane (NGV) wakes shock features. These results compliment...
In order to achieve high intensity beams for Fermilab's neutrino program, slip stacking is used in the Recycler which bunches overlap and through other multiple times. As bunch increased future, space charge effects during periods become more detrimental. investigate size of these effects, beam simulation program Synergia has been extended allow copropagation trains at different momenta.
Wakefields are an important factor in accelerator design, and a real concern when preserving the low beam emittance modern machines. Charge dependent size growth has been observed at Accelerator Test Facility (ATF2), test for future linear collider delivery systems. Part of explanation this is wakefields. In paper we present numerical calculations wakefields produced by several types geometrical discontinuities line as well tracking simulations to estimate induced effects. We also discuss...
A setup for the investigation of Coherent Diffraction Radiation (CDR) from a conducting screen as tool non-invasive longitudinal electron beam profile diagnostics has been designed and installed in Combiner Ring Measurement (CRM) line CLIC Test Facility (CTF3, CERN). In parallel, Synchrotron (CSR) generated mostly last bending magnet combiner ring is foreseen. The first measurements CDR CSR are obtained. this paper we present status experiment future plans.
As part of the NOvA upgrades in 2012, Recycler was repurposed as a proton stacker for Main Injector with aim to deliver 700 kW. Since January 2017, this design power has been run routinely. The steps taken commission and at kW operationally will be discussed. Major improvements include new collimation system control transverse losses diode damper damp resistive wall instability during slip-stacking. Plans future running also
To make the light sources compact and energy efficient, an recovery Superconducting RF LINAC can be used. We suggest a dual-axis, asymmetric cavity instead of conventional single axis, symmetric configurations to generate average electron beam currents above 1 A, while still avoiding development breakup instability (BBU). The use allows one increase start current HOMs participating in BBU development, as well break positive feedback, resulting capability high driven without loss through...