English
Related papers

Related papers: Low emittance upgrade for CANDLE project

200 papers

The joint expertise of ANL and FNAL has led to the production of Nb3Sn undulator magnets in operation in the ANL Advanced Photon Source (APS). These magnets showed performance reproducibility close to the short sample limit, and a design…

Accelerator Physics · Physics 2025-04-01 Emanuela Barzi , Masaki Takeuchi , Daniele Turrioni , Akihiro Kikuchi

The Advanced Photon Source is in the process of up-grading its storage ring from a double-bend to a multi-bend lattice as part of the APS Upgrade Project (APS-U). A swap-out injection scheme is planned for the APS-U to keep a constant beam…

Accelerator Physics · Physics 2018-03-14 M. Abliz , M. Jaski , A. Xiao , A. Jain , U. Wienands , H. Cease , M. Borland , G. Decker , J. Kerby

With advances in accelerator science and technology in the recent decades, the accelerator community has focused on the development of next-generation light sources, for example the diffraction-limited storage rings (DLSRs), which requires…

Accelerator Physics · Physics 2017-01-04 Wei Li , H. Hao , Stepan F. Mikhailov , Wei Xu , Jing-Yi Li , Wei-Min Li , Ying. K. Wu

We introduce NOBLE (Nonlinear lOw-rank Branch for Linear Enhancement), an architectural augmentation that adds nonlinear low-rank branches to transformer linear layers. Unlike LoRA and other parameter-efficient fine-tuning (PEFT) methods,…

Machine Learning · Computer Science 2026-03-09 Ethan Smith

Precise alignment of the electron beam is critical for successful application of scanning transmission electron microscopes (STEM) to understanding materials at atomic level. Despite the success of aberration correctors, aberration…

Complex doping schemes in RE$_3$Al$_5$O$_{12}$ (RE=rare earth element) garnet compounds have recently led to pronounced improvements in scintillator performance. Specifically, by admixing lutetium and yttrium aluminate garnets with gallium…

Materials Science · Physics 2016-06-21 Satyesh K. Yadav , Blas P. Uberuaga , Martin Nikl , Chao Jiang , Chris R. Stanek

The Stanford Linear Collider (SLC) was the first prototype of a new type of accelerator, the electron-positron linear collider. Many years of dedicated effort were required to understand the physics of this new technology and to develop the…

Accelerator Physics · Physics 2007-05-23 Nan Phinney

We revise a previous version of this paper proposing a method to transfer emittances from the transverse planes to the longitudinal. It turned out the system showed non-Hamiltonian behavior because the longitudinal component of the…

Accelerator Physics · Physics 2008-12-04 Lajos Bojtár

The present Fermilab proton Booster is an early example of a rapidly-cycling synchrotron (RCS). Built in the 1960s, it features a design in which the combined-function dipole magnets serve as vacuum chambers. Such a design is quite…

Accelerator Physics · Physics 2018-12-31 Sergei Nagaitsev , Valeri Lebedev

Using a particle-in-cell (PIC) code, we investigated the possibilities for emittance growth through the quadrupole magnets of the system used to transport the high-current electron beam from an induction accelerator to the bremsstrahlung…

Accelerator Physics · Physics 2017-01-17 Carl Ekdahl , Martin E. Schulze

Novel schemes for generating ultra-low emittance electron beams have been developed in past years and promise compact particle sources with excellent beam quality suitable for future high-energy physics experiments and free-electron lasers.…

Accelerator Physics · Physics 2024-07-01 F. C. Salgado , A. Kozan , D. Seipt , D. Hollatz , P. Hilz , M. Kaluza , A. Sävert , A. Seidel , D. Ullmann , Y. Zhao , M. Zepf

In the framework of the Low Emittance Gun (LEG) project, high gradient acceleration of a low emittance electron beam will be necessary. In order to achieve this acceleration a -500 kV, 250 ns FWHM, pulse will be applied in between two…

Accelerator Physics · Physics 2008-11-26 F. Le Pimpec , R. Ganter , R. Betemps

A new pixel detector for the CMS experiment is being built, owing to the instantaneous luminosities anticipated for the Phase I Upgrade of the LHC. The new CMS pixel detector provides four-hit tracking while featuring a significantly…

Instrumentation and Detectors · Physics 2016-12-23 Simon Spannagel

Circular mode beams are beams with non-zero angular momentum and strong inter-plane coupling. This coupling can be achieved in linear accelerators (linacs) through magnetization of electrons or ions at the source. Depending on the…

Accelerator Physics · Physics 2024-10-16 Onur Gilanliogullari , Brahim Mustapha , Pavel Snopok

We propose that light-matter coupling can be used to realize synthetic lattices. In particular, we consider a one-dimensional chain of exciton-photon sites to create a comb lattice that exhibits a transition from a flat band to a finite…

Mesoscale and Nanoscale Physics · Physics 2023-04-27 Amir Rahmani , Mateusz Kędziora , Andrzej Opala , Michał Matuszewski

The LHC with its unprecedented energy offers unique opportunities for groundbreaking measurements in p+p, p+A and A+A collisions even beyond the baseline experimental designs. ALICE is setting up a program of detector upgrades, which could…

Instrumentation and Detectors · Physics 2019-08-13 Thomas Peitzmann

Slow-light enhanced absorption in liquid-infiltrated photonic crystals has recently been proposed as a route to compensate for the reduced optical path in typical lab-on-a-chip systems for bio-chemical sensing applications. A simple…

Optics · Physics 2008-02-06 Jesper Pedersen , Sanshui Xiao , Niels Asger Mortensen

A portion of the remnant Tevatron program infrastructure at Fermilab is being reconfigured to be used for the generation and delivery of proton and muon beams for new high-precision particle physics experiments. With the 8 GeV Booster as…

Accelerator Physics · Physics 2016-12-23 J. A. Johnstone , M. J. Syphers

The ATLAS detector has to undergo significant updates at the end of the current decade, in order to withstand the increased occupancy and radiation damage that will be produced by the high-luminosity upgrade of the Large Hadron Collider. In…

Instrumentation and Detectors · Physics 2019-08-13 Giovanni Marchiori