A5011023361- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Gyrotron and Vacuum Electronics Research
- Superconducting Materials and Applications
- Particle Detector Development and Performance
- Particle physics theoretical and experimental studies
- Laser-Plasma Interactions and Diagnostics
- Advanced X-ray Imaging Techniques
- Magnetic confinement fusion research
- Atomic and Molecular Physics
- International Science and Diplomacy
- Laser Design and Applications
- Laser-Matter Interactions and Applications
- Photocathodes and Microchannel Plates
- Distributed and Parallel Computing Systems
- High-Energy Particle Collisions Research
- Dark Matter and Cosmic Phenomena
- Spacecraft and Cryogenic Technologies
- X-ray Spectroscopy and Fluorescence Analysis
- Plasma Diagnostics and Applications
- Radiation Detection and Scintillator Technologies
- Laser-induced spectroscopy and plasma
- Nuclear Physics and Applications
- Experimental and Theoretical Physics Studies
- Pulsed Power Technology Applications
High Energy Accelerator Research Organization
2004-2022
Cockcroft Institute
2021
University of Manchester
2021
Sci-Tech Daresbury
2021
SLAC National Accelerator Laboratory
1988-2017
University of Oregon
2017
Stanford University
1988
Lawrence Berkeley National Laboratory
1988
Stanford Synchrotron Radiation Lightsource
1988
The University of Tokyo
1977-1978
The ILC Technical Design Report documents the design for construction of a linear collider which can be operated at energies up to 500 GeV. This report summarizes outcome study possible running scenarios, including realistic estimate real time accumulation integrated luminosity based on ramp-up and upgrade processes. evolution physics outcomes is emphasized, initially GeV, then 350 GeV 250 scenarios have been chosen optimize Higgs precision measurements top while searching evidence signals...
The International Linear Collider (ILC) is on the table now as a new global energy-frontier accelerator laboratory taking data in 2030s. ILC addresses key questions for our current understanding of particle physics. It based proven technology. Its experiments will challenge Standard Model physics and provide window to look beyond it. This document brings story up date, emphasizing its strong motivation, readiness construction, opportunity it presents US community.
High energy photon colliders (γγ,γe) are based on e - linear where high photons produced using Compton scattering of laser light electrons just before the interaction point. This paper is a part Technical Design Report collider TESLA. 1 Physics program, possible parameters and some technical aspects at TESLA discussed.
We present a comprehensive survey of the dynamics spin-polarized beams in high-energy particle accelerators. A major theme this review is to clarify distinction between properties an individual particle—a spin—and that beam—the polarization. include work from number institutions, including high- and medium-energy facilities, synchrotron light sources muon storage rings (including proposal measure electric dipole moment) and, briefly, linear accelerators recirculating linacs. High-precision...
$7.6\ifmmode\times\else\texttimes\fi{}{10}^{6}$ x-ray photons per 3.5 ps pulse are detected within a 1.8--2.3 \AA{} spectral window during proof-of-principle laser synchrotron source experiment. A 600 MW ${\mathrm{CO}}_{2}$ interacted in head-on collision with 60 MeV, 140 A, electron beam. Both beams were focused to $\ensuremath{\sigma}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}32\ensuremath{\mu}\mathrm{m}$ spot. Our next plan is demonstrate ${10}^{10}$ using of...
It is shown that a scheme of beam-beam collisions which makes head-on collision in transversely boosted frame applicable to storage-ring colliders. This allows large crossing angle at the point without an excitation synchrotron-betatron resonances, and will give merits designing high-luminosity
A free relativistic electron in an electromagnetic field is a pure case of light-matter interaction. In the laboratory environment, this interaction can be realized by colliding laser pulses with beams produced from particle accelerators. The process single photon absorption and reemission electron, so-called linear Thomson scattering, results radiation that Doppler shifted into x-ray gamma-ray regions. At elevated intensity, nonlinear effects should come play when transverse motion...
We present our plans for a Monte-Carlo code simulating all possible combinations of (electromagnetic) interactions between colliding electron, positron, and both high-energy laser photon beams, based on the ABEL beam-beam interaction. The implementation first results laser-e− interaction are described.
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...
ILC (International Linear Collider) is under consideration as the next global project of particle physics. Its Technical Design Report, published in 2013, describes accelerator for center-of-mass energies above 200GeV. The operation at lower has not been studies intensively. This report discusses a 91.2GeV and presents possible parameter set.
We report on our recent simulation results the disruption effects during interaction of round ${e}^{+}$${e}^{\mathrm{\ensuremath{-}}}$ beams in linear colliders. It is found that addition to well-known parameter D, also depend another A\ensuremath{\equiv}${\ensuremath{\sigma}}_{z}$/${\ensuremath{\beta}}^{\mathrm{*}}$, where ${\ensuremath{\sigma}}_{z}$ bunch length and ${\ensuremath{\beta}}^{\mathrm{*}}$ \ensuremath{\beta} function at point. turns out while luminosity enhancement factor...
Thomson scattering of high-power laser and electron beams is a good test electrodynamics in the high-field region. We demonstrated production high-intensity X-rays head-on collision CO2 60-MeV at Brookhaven National Laboratory, Accelerator Test Facility. The energy an X-ray photon was limited 6.5 keV linear (lowest order) scattering, but nonlinear (higher process produces higher X-rays. measured angular distribution high-energy confirmed that it agrees with theoretical predictions.
ATF2 is a final-focus test beam line which aims to focus the low emittance from ATF damping ring vertical size of about 37 nm and demonstrate nanometer level stability. Several advanced diagnostics feedback tools are used. In December 2008, construction installation were completed commissioning started, supported by an international team Asian, European, U.S. scientists. The present status first results described.
Based on the requirements from a conceptual design of polarized positron beam for future linear colliders, we constructed special collision system with short focal length 150 mm laser beams so as to produce $\ensuremath{\gamma}$ rays through inverse Compton scattering. In order achieve efficient laser-electron collisions, created optics very small ${e}^{\ensuremath{-}}$-beam sizes ${\ensuremath{\sigma}}_{{e}_{x0}}=7.6\text{ }\ensuremath{\mu}\mathrm{m}$ and...
The transverse beam dynamics in plasma channels of possible future plasma-based linacs is discussed. We represent the focusing both a beam-driven and laser-driven wakefield accelerator by uniform channel. sizes basic offset tolerance are calculated, finding that sub-micron beams must be transported with even smaller tolerances. results emphasize need to pursue further ideas for structures high-acceleration gradients but reduced wakefields.
The correction terms to the Sokolov-Ternov radiation formula due variation of magnetic field strength along electron trajectory are calculated up second order in power expansion $\frac{{B}_{\ensuremath{\tau}}}{B}$, where $\ensuremath{\tau}$ is formation time radiation. It found that field-gradient effect reduces intensity classical regime, and enhances it quantum regime. This then applied beamstrahlung with Gaussian ${e}^{+}{e}^{\ensuremath{-}}$ bunch currents. shown be substantial for beam...
The dynamics of particles in laser pulse-driven wakefields over multistages a collider is studied. A map phase space stage wakefield acceleration induced by pulse (or electron beam) derived. entire system generated with product multiple maps wakefields, drifts, magnets, etc. This systems may include offsets various elements the accelerator, representing noise and errors arising from operation such complex device. We find that an unmitigated strong focusing coupled alignment position beam...