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A recent study has introduced a procedure to quantify the survivability of a team of armoured fighting vehicles when it is subjected to a single missile attack. In particular this study investigated the concept of collaborative active…

Systems and Control · Electrical Eng. & Systems 2021-06-29 Graham V. Weinberg , Mitchell Kracman

Wide-area data and algorithms in large power systems are creating new opportunities for implementation of measurement-based dynamic load modeling techniques. These techniques improve the accuracy of dynamic load models, which are an…

Signal Processing · Electrical Eng. & Systems 2019-10-24 Phylicia Cicilio , Eduardo Cotilla-Sanchez

Laser-based electron acceleration is attracting strong interest from the conventional accelerator community due to its outstanding characteristics in terms of high initial energy, low emittance and high beam current. Unfortunately, such…

We study the impact of a projectile onto a bed of 3 mm grains immersed in an index-matched fluid. Specifically, we vary the amount of prestrain on the sample, strengthening the force chains within the system. We find this affects only the…

Soft Condensed Matter · Physics 2014-06-11 Kerstin Nordstrom , Emily Lim , Matthew Harrington , Wolfgang Losert

The attention mechanism requires huge computational efforts to process unnecessary calculations, significantly limiting the system's performance. Researchers propose sparse attention to convert some DDMM operations to SDDMM and SpMM…

Hardware Architecture · Computer Science 2023-10-10 Huize Li , Hai Jin , Long Zheng , Yu Huang , Xiaofei Liao , Dan Chen , Zhuohui Duan , Cong Liu , Jiahong Xu , Chuanyi Gui

Producing intense radioactive beams, in particular those consisting of short-lived isotopes requires the control of the release efficiency. The released fractions of 11 elements were measured on 14 samples that were characterized by various…

I present and discuss a unified scheme for jet launching that is based on stochastic dissipation of the accretion disk kinetic energy, mainly via shock waves. In this scheme, termed thermally-launched jet model, the kinetic energy of the…

Astrophysics · Physics 2009-11-13 Noam Soker

There currently exists a number of different schemes for laser based ion acceleration in the literature. Some of these schemes are also partly overlapping, making a clear distinction between the schemes difficult in certain parameter…

Plasma Physics · Physics 2016-07-05 Felix Mackenroth , Arkady Gonoskov , Mattias Marklund

Conical wire arrays with different opening angles are used as load of a 400kA, 1kA/ns generator. The differences in opening angle allow the study of the influence of the array geometry on the jet properties. The characterization of the jets…

The ATLAS trigger has been used very successfully for the online event selection during the first part of the second LHC run (Run-2) in 2015/16 at a center-of-mass energy of 13 TeV. The trigger system is composed of a hardware Level-1…

High Energy Physics - Experiment · Physics 2019-08-13 Catrin Bernius

This study demonstrates the feasibility of using smaller capillary emitters to achieve higher specific impulse ($I_\text{sp}$) in electrospray propulsion. Four ionic liquids were characterized using capillary emitters with tip diameters…

Fluid Dynamics · Physics 2026-04-07 Manel Caballero-Pérez , Marc Galobardes-Esteban , Manuel Gamero-Castaño

Single-impulse three-dimensional magnetic focusing of vertically launched cold atoms has been observed. Four different configurations of the lens were used to vary the relative radial and axial focusing properties. Compact focused clouds of…

Atomic Physics · Physics 2008-06-10 David A. Smith , Aidan S. Arnold , Matthew J. Pritchard , Ifan G. Hughes

The nearby Perseus galaxy cluster is a key target for indirect detection searches for decaying dark matter. We use the C-EAGLE simulations of galaxy clusters to predict the flux, width and shape of a dark matter decay line, paying…

Cosmology and Nongalactic Astrophysics · Physics 2019-04-24 Mark R. Lovell , Dmytro Iakubovskyi , David Barnes , Sownak Bose , Carlos S. Frenk , Tom Theuns , Wojciech A. Hellwing

The ALICE experiment at the Large Hadron Collider (LHC) proposes major detector upgrades to fully exploit the increase of the luminosity of the LHC in RUN~3 and to extend the physics reach for rare probes at low transverse momentum. The…

Instrumentation and Detectors · Physics 2019-08-13 Taku Gunji

New crystal technique - array of bent strips and a fan-type reflector, based on thin straight plates - have been used for research of extraction and collimation a circulating beam in the U-70 accelerator at the energy 50 GeV and 1.3 GeV. It…

We study and discuss electron acceleration in vacuum interacting with fundamental Gaussian pulses using specific parameters relevant for the multi-PW femtosecond lasers at ELI-NP. Taking into account the characteristic properties of both…

Plasma Physics · Physics 2020-12-03 Etele Molnar , Dan Stutman , Catalin Ticos

Industry reliability rules increasingly require utilities to study and mitigate cascading failure risk in their system. Motivated by this, this paper describes how cascading failure risk, in terms of expected blackout size, varies with…

Optimization and Control · Mathematics 2013-11-18 Pooya Rezaei , Paul D. H. Hines

We compare low velocity impacts that ricochet with the same impact velocity and impact angle into granular media with similar bulk density, porosity and friction coefficient but different mean grain size. The ratio of projectile diameter to…

Earth and Planetary Astrophysics · Physics 2022-01-25 Esteban Wright , Alice C. Quillen , Paul Sanchez , Stephen R. Schwartz , Miki Nakajima , Hesam Askari , Peter Miklavcic

We assess the possibility of reducing the travel time of a crewed mission to Mars by examining four different propulsion methods and keeping the mass at departure under 2500 tonne, for a fixed architecture. We evaluated representative…

Popular Physics · Physics 2023-03-14 A. G. C. Guerra , O. Bertolami , P. J. S. Gil

We address a benchmark task in agile robotics: catching objects thrown at high-speed. This is a challenging task that involves tracking, intercepting, and cradling a thrown object with access only to visual observations of the object and…