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High-brightness femtosecond-to-attosecond pulses are indispensable for probing electron dynamics on their fundamental temporal scales. X-ray free-electron lasers (XFELs) at high repetition rates will facilitate high-statistics measurements…

Accelerator Physics · Physics 2026-05-01 Junhao Liu , Zhen Wang , Lanpeng Ni , Yujie Lu , Chao Feng , Zhentang Zhao

A Multi-Reflection Time-of-Flight Mass Spectrometer (MR-ToF-MS) has been commissioned at the Ion-Guide Isotope Separator On-Line (IGISOL) facility. It consists of six electrode pairs that form a nearly energy-isochronous potential and a…

We introduce an approach for performing spectrally resolved electron microscopy without the need for an electron spectrometer. The method involves an electron beam prepared as a coherent superposition of multiple paths, one of which passes…

Materials Science · Physics 2025-04-24 F. Javier García de Abajo , Cruz I. Velasco

Electron paramagnetic resonance (EPR) spectroscopy interrogates unpaired electron spins in solids and liquids to reveal local structure and dynamics; for example, EPR has elucidated parts of the structure of protein complexes that have…

Other Condensed Matter · Physics 2012-05-08 S. Takahashi , L. -C. Brunel , D. T. Edwards , J. van Tol , G. Ramian , S. Han , M. S. Sherwin

Combination of advanced high power laser technology, new acceleration methods and achievements in undulator development opens a way to build compact, high brilliance Free Electron Laser (FEL) driven by a laser wakefield accelerator (LWFA).…

Accelerator Physics · Physics 2024-08-07 Alexander Molodozhentsev , Konstantin O. Kruchinin

Light-phase-sensitive techniques, such as coherent multidimensional spectroscopy, are well-established in a broad spectral range, already spanning from radio-frequencies in nuclear magnetic resonance spectroscopy to visible and ultraviolet…

Free-electron lasers (FELs) provide a revolutionary tool for capturing the structure and dynamics of matter in real time at the atomic scale. The size and cost of FELs can be substantially reduced by using laser wakefield acceleration…

Accelerator Physics · Physics 2026-03-31 Hengyuan Xiao , Fei Li , Shuang Liu , Yuchen Jiang , Siqin Ding , Zhi Song , Jianfei Hua , Wei Lu

The performance of electron energy-loss spectrometers can often be limited by their electron-optical aberrations. Due to recent developments in high energy-resolution and momentum-resolved electron energy loss spectroscopy (EELS), there is…

Materials Science · Physics 2023-02-28 Yueming Guo , Andrew R. Lupini

An analytical method is presented with allows to estimate the energy resolution of time-of-flight neutron spectrometers, as well as its partial contributions, over a dynamical range that extends from the elastic line to the accessible…

Instrumentation and Detectors · Physics 2009-12-05 Ana M Gaspar

A system based on commercially available items, such as a laser diode, emitting in the visible range $\sim 400$ nm,and multimode fiber patches, fused fiber splitters and optical switches may be assembled,for time calibration of…

Instrumentation and Detectors · Physics 2016-06-01 M. Bonesini , R. Bertoni , A. deBari , M. Rossella

In this paper we discuss a method for nondestructive measurements of the longitudinal profile of sub-picosecond electron bunches for X-Ray Free Electron Lasers (XFELs). The method is based on the detection of the Coherent Synchrotron…

Accelerator Physics · Physics 2007-05-23 G. A. Geloni , E. L. Saldin , E. A. Schneidmiller , M. V. Yurkov

Since its inception, velocity map imaging (VMI) has been a powerful tool for measuring the 2D momentum distribution of photoelectrons generated by strong laser fields. There has been continued interest in expanding it into 3D measurements…

Electron energy-loss spectroscopy (EELS) can measure similar information to X-ray, UV-Vis, and IR spectroscopies but with atomic resolution and increased scattering cross sections. Recent advances in electron monochromators have expanded…

Chemical Physics · Physics 2024-04-26 Ye-Jin Kim , Levi D. Palmer , Wonseok Lee , Nicholas J. Heller , Scott K. Cushing

The purpose of this study was to show how advanced concepts of compact, lossless and "Time Of Flight" (TOF) capable electronics similar to those foreseen for the LHC and ILC experiments could be fairly and easily transferred to the medical…

Instrumentation and Detectors · Physics 2009-08-03 P. -E. Vert , J. Lecoq , G. Montarou , N. Pauna , B. Joly , M. Boutemeur , H. Mathez , R. Gaglione , P. Le Dû

In positron emission tomography (PET), time-of-flight (TOF) information localizes source positions along lines of response. Cherenkov-radiator-integrated microchannel-plate photomultiplier tubes have achieved 30 ps TOF resolution,…

Long-distance depth imaging holds great promise for applications such as autonomous driving and robotics. Direct time-of-flight (dToF) imaging offers high-precision, long-distance depth sensing, yet demands ultra-short pulse light sources…

Computer Vision and Pattern Recognition · Computer Science 2025-05-29 Manchao Bao , Shengjiang Fang , Tao Yue , Xuemei Hu

Transition-edge sensors (TESs) have the potential to perform electron spectroscopic measurements with far greater measurement rates and efficiencies than can be achieved using existing electron spectrometers. Existing spectrometers filter…

Instrumentation and Detectors · Physics 2024-03-05 K. M. Patel , S. Withington , A. G . Shard , D. J. Goldie , C. N. Thomas

The advance in laser plasma acceleration techniques pushes the regime of the resulting accelerated particles to higher energies and intensities. In particular the upcoming experiments with the FLAME laser at LNF will enter the GeV regime…

Time-resolved and ultrafast electron energy-loss spectroscopy (EELS) is an emerging technique for measuring photoexcited carriers, lattice dynamics, and near-fields across femtosecond to microsecond timescales. When performed in either a…

Materials Science · Physics 2025-11-03 Wonseok Lee , Levi D. Palmer , Thomas E. Gage , Scott K. Cushing

We describe an experiment to measure the emitted real-time electric field from an ultrafast third-order nonlinear optical interaction in molecules, using a phase-tracked spectral interferometry scheme. By combining a software lock-in…

Optics · Physics 2025-03-11 Siddhant Pandey , Francis Walz , Niranjan Shivaram