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Recently, the study of integrable Hamiltonian systems has led to nonlinear accelerator lattices with one or two transverse invariants and wide stable tune spreads. These lattices may drastically improve the performance of high-intensity…

Accelerator Physics · Physics 2015-11-06 G. Stancari , A. Burov , V. Lebedev , S. Nagaitsev , E. Prebys , A. Valishev

Vacuum Insulated Glazing (VIG) is a highly thermally insulating window technology, which boasts an extremely thin profile and lower weight as compared to gas-filled insulated glazing units of equivalent performance. The VIG is a double-pane…

Computer Vision and Pattern Recognition · Computer Science 2022-07-08 Henrik Riedel , Sleheddine Mokdad , Isabell Schulz , Cenk Kocer , Philipp Rosendahl , Jens Schneider , Michael A. Kraus , Michael Drass

A good vacuum performance in particle accelerators is vital for their successful operation. The reasons why a good vacuum is needed, together with the basics of vacuum physics and technology and the main gas sources inside the vacuum…

Accelerator Physics · Physics 2020-06-03 Eshraq Al-Dmour

Quantum vacua are characterized by the topological structure of their fermion zero modes. The vacua are distributed into universality classes protected by topology in momentum space. The vacua whose manifold of fermion zero modes has…

General Relativity and Quantum Cosmology · Physics 2007-05-23 G. E. Volovik

Particulates and dust can limit accelerator performance in various ways. In this paper the basic properties and mechanisms of contaminations due to particulates are described. With this knowledge countermeasures can be implemented to…

Accelerator Physics · Physics 2020-06-11 Lutz Lilje

The use of nonlinear lattices with large betatron tune spreads can increase instability and space charge thresholds due to improved Landau damping. Unfortunately, the majority of nonlinear accelerator lattices turn out to be nonintegrable,…

Accelerator Physics · Physics 2013-01-30 S. Nagaitsev , A. Valishev , V. V. Danilov , D. N. Shatilov

Large Vision-Language Models (LVLMs) have achieved remarkable success, yet their significant computational demands hinder practical deployment. While efforts to improve LVLM efficiency are growing, existing methods lack comprehensive…

Computation and Language · Computer Science 2025-06-03 Zekun Wang , Minghua Ma , Zexin Wang , Rongchuan Mu , Liping Shan , Ming Liu , Bing Qin

Magnetically confined hollow electron beams for controlled halo removal in high-energy colliders such as the Tevatron or the LHC may extend traditional collimation systems beyond the intensity limits imposed by tolerable material damage.…

Accelerator Physics · Physics 2015-06-04 G. Stancari , A. Drozhdin , G. Kuznetsov , V. Shiltsev , A. Valishev , A. Kabantsev , L. Vorobiev

The development of high gradient acceleration and tight phase-space control of high power beams is a key element for future lepton and hadron colliders since the increasing demands for higher energy and luminosity significantly raise costs…

Accelerator Physics · Physics 2015-12-09 Y. M. Shin , A. H. Lumpkin , R. M. Thurman-Keup

An appropriate design of wavefront will enable light fields propagating along arbitrary trajectories thus forming accelerating beams in free space. Previous ways of designing such accelerating beams mainly rely on caustic methods, which…

Optics · Physics 2017-02-22 Yuanhui Wen , Yujie Chen , Yanfeng Zhang , Hui Chen , Siyuan Yu

Interactive high-performance computing is doubtlessly beneficial for many computational science and engineering applications whenever simulation results should be visually processed in real time, i.e. during the computation process.…

Computational Engineering, Finance, and Science · Computer Science 2018-07-03 Ralf-Peter Mundani , Jérôme Frisch , Vasco Varduhn , Ernst Rank

Polymer-air multilayer (PAM) was developed to decrease the heat loss through window glass panes. A PAM consists of a few polymer films separated from each other by air gaps. Thanks to the excellent optical properties of the polymer films,…

Applied Physics · Physics 2020-06-01 Rui Kou , Ying Zhong , Qingyang Wang , Jeongmin Kim , Renkun Chen , Yu Qiao

The Future Circular Collider (FCC), currently in the design phase, will address many outstanding questions in particle physics. The technology to succeed in this 100 km circumference collider goes beyond present limits. Ultra-high vacuum…

Accelerator Physics · Physics 2017-09-28 Ida Aichinger , Roberto Kersevan , Paolo Chiggiato

The ever increasing demands placed upon machine performance have resulted in the need for more comprehensive particle accelerator modeling. Computer simulations are key to the success of particle accelerators. Many aspects of particle…

In order to satisfy ultrahigh-vacuum requirements several mechanical engineering disciplines need to be pushed to their limits. At the manufacturing level high precision turning or diamond turning is necessary to obtain smooth surfaces,…

Applied Physics · Physics 2020-06-23 S. Atieh , G. Favre , S. Mathot

Air curtains are installed in open doorways of a building to reduce buoyancy-driven exchange flows across the doorway. Although an air curtain allows an unhampered passage of humans and vehicles, the interaction of this traffic with an air…

Fluid Dynamics · Physics 2020-09-15 Narsing K. Jha , D. Frank , L. Darracq , P. F. Linden

The following document provides a comprehensive look into the past, present, and future of Timing at Fermilab. By including historical context with technical implementation, this document seeks to help the reader gain a broader…

Accelerator Physics · Physics 2025-12-11 Evan Milton , Mark Austin , Dan McArthur

Magnetically confined hollow electron beams for controlled halo removal in high-energy colliders such as the Tevatron or the LHC may extend traditional collimation systems beyond the intensity limits imposed by tolerable material damage.…

We generalize the nature of the so-called beam-dump ``ceiling'' beyond which the improvement on the sensitivity reach in the search for fast-decaying mediators dramatically slows down, and we point out its experimental implications that…

High Energy Physics - Phenomenology · Physics 2026-05-13 Doojin Kim , Jaehoon Yu , Jong-Chul Park , Hyunyong Kim

We present a compact design of dual-beam Zeeman slower optimized for efficient production of cold atom applications. Traditional single-beam configurations face challenges from substantial residual atomic flux impacting downstream optical…

Atomic Physics · Physics 2026-02-25 Chen Chen , Kejun Liu , Dezhou Deng , Shuchang Ma , Peng Zhu , Zhichang He , J. F. Che , Xiaoxiao Wu , Peng Chen