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The Linear Accelerator 4 (LINAC 4) is designed to accelerate negative hydrogen ions to high energies for injection into the Large Hadron Collider (LHC), where it has been supplying proton beams since 2020. LINAC 4 accelerates negative…

加速器物理 · 物理学 2025-03-04 D. M. C. M. K. Dissanayake , N. Wickramage , K. M. Liyanage , K. A. S. Lakshan

This paper proposes a computational framework for the design optimization of stable structures under large deformations by incorporating nonlinear buckling constraints. A novel strategy for suppressing spurious buckling modes related to…

计算工程、金融与科学 · 计算机科学 2023-06-07 Guodong Zhang , Kapil Khandelwal , Tong Guo

CONUS is a novel experiment aiming at detecting elastic neutrino nucleus scattering in the fully coherent regime using high-purity Germanium (Ge) detectors and a reactor as antineutrino ($\bar\nu$) source. The detector setup is installed at…

The use of existing linacs, and in particular light source injectors, for free-electron laser (FEL) experiments is becoming more common due to the desire to test FELs at ever shorter wavelengths. The high-brightness, high-current beams…

加速器物理 · 物理学 2008-11-26 G. Travish , S. Biedron , M. Borland , M. Hahne , K. Harkay , J. W. Lewellen , A. Lumpkin , S. Milton , N. Sereno

In order to dissipate long-lived radioactive waste, not only high ux proton accelerator but also electron linac have been proposed. A proton accelerator directly induces nuclear fission and mutation. On the other hand, electron beam has two…

加速器物理 · 物理学 2021-04-20 Y. Kawashima , T. Asaka , H. Ego , M. Hara

This presentation will be a broad survey of progress in induction technology over the past four years. Much work has been done on accelerators for hydrodynamic test radiography and other applications. Solid-state pulsers have been developed…

加速器物理 · 物理学 2007-05-23 George J. Caporaso

We report the observation of small group velocities of order 90 meters per second, and large group delays of greater than 0.26 ms, in an optically dense hot rubidium gas (~360 K). Media of this kind yield strong nonlinear interactions…

We investigate by particle-in-cell simulations in two and three dimensions the laser-plasma interaction and the proton acceleration in multilayer targets where a low density "near-critical" layer of a few micron thickness is added on the…

等离子体物理 · 物理学 2015-06-03 Andrea Sgattoni , Pasquale Londrillo , Andrea Macchi , Matteo Passoni

We investigate the optical response of a charge-transfer complex in a condensed phase driven by an external laser field. Our model includes an instantaneous short-range Coulomb interaction and a local optical vibrational mode described by…

强关联电子 · 物理学 2021-08-25 Kiyoto Nakamura , Yoshitaka Tanimura

Numerous quantum technologies make use of a microgravity environment e.g. in space. Operating in this extreme environment makes high demands on the experiment and especially the laser system regarding miniaturization and power consumption…

An asynchronous accelerator is described, in which the principle of its operation permits the active longitudinal bunch compression of accelerated proton beams, to overcome the space charge limitation effects of intense bunches. It is shown…

We present a guide for the design and fabrication of a CMOS-compatible metamaterial microstructure as an absorber of visible light with exceptionally high absorption efficiency (~ 98%), for wavelengths 400nm-700nm. The structural parameters…

光学 · 物理学 2023-02-28 Vivek Khichar , Nader Hozhabri , Ali R. Koymen

The creation of intense radioactive beams requires intense and energetic primary beams. A task force analysis of this subject recommended an acceleration system capable of 400 MeV/u uranium at 1 particle uA as an appropriate driver for such…

Considerable effort has been devoted to the development of superconducting undulators (SCUs) intended for particle accelerator-based light sources, including synchrotrons and free electron laser (FEL) facilities. Recently, a…

加速器物理 · 物理学 2025-03-17 Zhuangwei Chen , Marco Calvi , John Durrell , Cristian Boffo , Dabin Wei , Kai Zhang , Zhentang Zhao

A superconducting (SC) linac is expected to lead to outstanding discoveries in various scientific fields because its beam current is a few orders of magnitude larger than in a normal-conducting linac. However, the widespread use of SC linac…

加速器物理 · 物理学 2019-04-17 Miho Shimada

It has been recently shown that especially engineered light beams have the remarkable ability to propagate along curved trajectories in vacuum. Current methods for generating accelerating beams use phase modulators and lenses leading to…

We summarize the current state of a concept for muon acceleration aimed at a future Neutrino Factory. The main thrust of these studies was to reduce the overall cost while maintaining performance by exploring the interplay between the…

加速器物理 · 物理学 2018-03-14 S. Alex Bogacz

Nighttime environments pose significant challenges for camera-based perception, as existing methods passively rely on the scene lighting. We introduce Lighting-driven Dynamic Active Sensing (LiDAS), a closed-loop active illumination system…

计算机视觉与模式识别 · 计算机科学 2025-12-10 Simon de Moreau , Andrei Bursuc , Hafid El-Idrissi , Fabien Moutarde

High-power laser technologies are essential in precision manufacturing, defense, and scientific research, where accurate control of the beam profile is paramount. Although several beam-shaping methods exist, they often face implementation…

To manipulate cold atoms in spatially constrained quantum engineering platforms, we developed a lensless optical system with a $\sim$1 $\mu$m resolution and a transverse size of only 225 $\mu$m. We use a multimode optical fiber with a high…

原子物理 · 物理学 2020-03-24 Nicolas Vitrant , Kilian Müller , Sébastien Garcia , Alexei Ourjoumtsev