A5023543299- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Electron and X-Ray Spectroscopy Techniques
- Advanced Electron Microscopy Techniques and Applications
- Advanced X-ray Imaging Techniques
- Superconducting Materials and Applications
- Radiation Detection and Scintillator Technologies
- Gyrotron and Vacuum Electronics Research
- Laser-Plasma Interactions and Diagnostics
- Crystallography and Radiation Phenomena
- Quantum Information and Cryptography
- X-ray Spectroscopy and Fluorescence Analysis
- Plasma Diagnostics and Applications
- Surface and Thin Film Phenomena
- Integrated Circuits and Semiconductor Failure Analysis
- Semiconductor Quantum Structures and Devices
- Advanced X-ray and CT Imaging
- Advanced Multi-Objective Optimization Algorithms
- Radiation Therapy and Dosimetry
- Radioactive Decay and Measurement Techniques
- Stellar, planetary, and galactic studies
- Atomic and Molecular Physics
- Anomaly Detection Techniques and Applications
- Radiomics and Machine Learning in Medical Imaging
- Photonic and Optical Devices
Argonne National Laboratory
2022-2024
Fermi National Accelerator Laboratory
2020-2023
University of Chicago
1900-2022
Belarusian State University
2015-2016
Abstract As part of the Snowmass'21 community planning excercise, Advanced Accelerator Concepts (AAC) proposed future linear colliders with center-of-mass energies up to 15 TeV and luminosities 50 × 10 34 cm -2 s -1 in a compact footprint. In addition being compact, these machines must also be energy efficient. We identify two challenges that addressed design machines. First, Beam Delivery System (BDS) not add significant length accelerator complex. Second, beam parameters chosen mitigate...
Generally, turn-to-turn power fluctuations of incoherent spontaneous synchrotron radiation in a storage ring depend on the 6D phase-space distribution electron bunch. In some cases, if only one parameter is unknown, this can be determined from measured magnitude these fluctuations. Letter, we report an absolute measurement (no free parameters or calibration) small vertical emittance (5–15 nm rms) flat beam by method, under conditions, when it unresolvable conventional light size...
In a storage ring, turn-to-turn fluctuations in the intensity of spontaneous synchrotron radiation occur due to two mechanisms. The first mechanism is quantum uncertainty number emitted photons. second variations relative positions classical pointlike electrons bunch. We present unified description both effects framework optics. derive an equation for arbitrary degree coherence, which generalizes previously reported results temporally incoherent radiation. compare predictions our calculation...
Particle accelerators and storage rings have been transformative instruments of discovery, and, for many applications, innovations in particle-beam cooling a principal driver that success1. Beam reduces the spread particle positions momenta, while keeping number particles constant, combats diffusive effects, thereby enabling accumulation production preservation intense beams. In case colliders, increases likelihood observing rare physics events. One most important conceptual technological...
Generally, turn-to-turn fluctuations of synchrotron radiation power in a storage ring depend on the 6D phase-space distribution electron bunch. This effect is related to interference fields radiated by different electrons. Changes relative positions and velocities inside bunch result total emitted energy per pass source. has been previously described assuming constant equal before entering In this paper, we present generalized formula for with non-negligible beam divergence. Further,...
The possibility of quantitative texture analysis by means parametric x-ray radiation (PXR) from relativistic electrons with Lorentz factor γ > 50MeV in a polycrystal is considered theoretically. In the case rather smooth orientation distribution function (ODF) and large detector (θD >> 1/γ) universal relation between ODF intensity presented. It shown that if independent on one Euler angles, then fully determined angular distribution. Application method to simulated data shows stability...
Abstract An experimental study of undulator radiation generated by a single electron was carried out at the Integrable Optics Test Accelerator (IOTA) storage ring Fermilab. Photons were detected with single-photon avalanche diode (SPAD) an average rate 20 kHz, corresponding to one detection every few hundred revolutions. Events continuously recorded picosecond event timer for as long 5 minutes time. The collected data used directly test predictions classical Poisson photostatistics....
Abstract We report on measurements of beams from thermionic cathode (TC) rf guns in the Advanced Photon Source S-Band Linac. These include macropulse out both new and existing TC as well observation microbunching within micropulses these beams. A gun chopper limits FWHM duration to 10-ns range. Our objectives were analyse investigate a TC-rf-gun-generated beam. diagnostics elucidated longitudinal beam structures ns fs time scales. Coherent transition radiation (CTR) interferometers...
Radiation in a 2-photon state is observed the same detectorCoincidences are suppressed
The aims of the CLARA experiment at Fermilab Integrable Optics Test Accelerator (IOTA) were to directly measure coherence length undulator radiation emitted by a single electron and test whether is in pure classical Glauber coherent state or quantum mixture Fock states. We used Mach-Zehnder interferometer (MZI) study visible generated 150-MeV electrons circulating ring. relative delay between two arms MZI was adjusted varying one them with resolution 10 nm. intensity beam spanned several...
Abstract The Linac Extension Area has been developed into a beamline area for testing accelerator components and techniques. Beginning commissioning activities in February 2023, we have delivered the first electron beam to at Advanced Photon Source 425 MeV. In present work, summarise principal review safety controls of Area.
Diffraction in multilayers the presence of interfacial roughness is studied theoretically, being considered as a transition layer. Exact (within framework two-beam dynamical diffraction theory) differential equations for field amplitudes crystalline structure with varying properties along its surface normal are obtained. An iterative scheme approximate solution developed. The presented approach to incorporated into recursion matrix formalism way that obviates possible numerical problems....
Abstract Space charge (SC) forces of a circulating beam in ring have both linear (defocusing) and nonlinear components, due to nonuniform distribution. The component SC produces betatron tune shift, which is the largest for zero-amplitude particle, while an amplitude-dependent spread. These effects are responsible several undesirable phenomena accelerators: emittance growth, particle losses, halo, etc. In this paper, we investigate possibility mitigate distributed by thin McMillan lens,...