English
Related papers

Related papers: Dynamic aperture and space charge effect studies f…

200 papers

Time projection chambers (TPCs) are widely used in nuclear and particle physics. They are particularly useful when measuring reaction products from heavy ion collisions. Most nuclear experiments at low energy are performed in a fixed target…

The role and mitigation of space charge effects are important aspects of the beam physics research to be performed at the Integrable Optics Test Accelerator (IOTA) at Fermilab. The impact of nonlinear integrability (partial and complete) on…

Accelerator Physics · Physics 2021-07-22 Runze Li , Tanaji Sen , Jean-Francois Ostiguy

The combination of an exact and Corner Transfer Matrix Renormalization Group (CTMRG) methods is used to study an influence of external electric and magnetic fields on existence of intriguing reentrant magnetic transitions in a coupled…

Statistical Mechanics · Physics 2020-04-22 Hana Čenčariková , Jozef Strečka , Andrej Gendiar

In this letter we explore how the microscopic dynamics of charge transfer (CT) excitons are influenced by the presence of an external magnetic field in disordered molecular semiconductors. This influence is driven by the dynamic interplay…

Chemical Physics · Physics 2016-06-03 Chee Kong Lee , Liang Shi , Adam P. Willard

Analytic expressions for the amplitude-dependent tune shift driven by the quadrupole magnet fringe field have been obtained. The magnitude of the effect is compared with other sources of non-linearity such as chromatic sextupoles, octupole…

Accelerator Physics · Physics 2009-03-18 E. Levichev , P. Piminov

Reluctance actuators are preferred for high-precision applications. Due to resistive losses in the coils, the accuracy of this type of actuator will reduce in quasi-static operation mode within a vacuum environment. By using soft permanent…

Systems and Control · Electrical Eng. & Systems 2022-12-05 W. B. Hoekwater , J. D. Wiersema1 , S. H. HosseinNia

We study the effects of frame-dragging on the structure of force-free magnetospheres around rotating black holes. For slowly rotating black holes, analytic explorations often focus on transforming an exact force-free solution applicable to…

High Energy Astrophysical Phenomena · Physics 2019-03-15 Kevin Thoelecke , Masaaki Takahashi , Sachiko Tsuruta

We study the one loop correction to the closed bosonic string propagator, including the possibile presence of D-branes, by discretizing the light cone worldsheet on an M times N rectangular lattice, with M proportional to P^+ and N+1…

High Energy Physics - Theory · Physics 2015-03-20 Georgios Papathanasiou , Charles B. Thorn

We present a moduli dependent target space effective field theory action for (truncated) heterotic string toroidal compactifications. When moving continuously along moduli space, the stringy gauge symmetry enhancement-breaking effects,…

High Energy Physics - Theory · Physics 2019-03-27 G. Aldazabal , E. Andrés , M. Mayo , V. Penas

We demonstrate an on demand spatial control of excitonic magnetic lattices for the potential applications of excitonic-based quantum optical devices. A two dimensional magnetic lattice of indirect excitons can form a transition to one…

Quantum Gases · Physics 2012-10-16 Ahmed M. Abdelrahman , Byoung S. Ham

The coherent electron transport along zigzag and metallic armchair graphene nanoribbons in the presence of one or two vacancies is investigated. Having in mind atomic scale tunability of the conductance fingerprints, the primary focus is on…

Mesoscale and Nanoscale Physics · Physics 2010-10-26 D. A. Bahamon , A. L. C. Pereira , P. A. Schulz

In this thesis, we consider some spin effects in QCD and recurrence lattices with multi-site exchanges. Main topic of our manuscript are critical phenomena in spin systems defined on the recurrence lattices. Main tool of our approach is the…

Statistical Mechanics · Physics 2009-09-29 Lev Ananikyan

In this paper, we study how the distribution of net charges in carbon nanotubes can be influenced by substrate and external electric fields, using theoretical calculations based on an extension of the atomic charge-dipole model. We find…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 Zhao Wang

The Stanford Synchrotron Radiation Laboratory is investigating an accelerator upgrade project that would replace the present 130 nm rad FODO lattice with an 18 nm rad double bend achromat (DBA) lattice: SPEAR 3. The low emittance design…

Accelerator Physics · Physics 2015-06-26 Y. Nosochkov , J. Corbett

Twisted bilayers of transition metal dichalcogenides (TMDs) have revealed a rich exciton landscape including hybrid excitons and spatially trapped moir\'e excitons that dominate the optical response of the material. Recent studies have…

Mesoscale and Nanoscale Physics · Physics 2024-03-05 Joakim Hagel , Samuel Brem , Johannes Abelardo Pineiro , Ermin Malic

Two-dimensional double nanoparticles (DNPs) arrays are demonstrated theoretically supporting the interaction of out-of-plane magnetic plasmons and in-plane lattice resonances, which can be achieved by tuning the nanoparticle height or the…

Optics · Physics 2014-06-04 Pei Ding , Junqiao Wang , Jinna He , Chunzhen Fan , Genwang Cai , Erjun Liang

We theoretically study the effects of dynamical lattice distortion in a three-dimensional Rashba system based on a tight-binding model. Considering an $sp$-electron system on a tetragonal lattice with broken inversion symmetry, lattice…

Mesoscale and Nanoscale Physics · Physics 2023-10-23 Yuuki Ogawa , Takumi Funato , Hiroshi Kohno

This article describes calculations and measurements of space charge effects due to high rate irradiation in high resolution drift tubes. Two main items are studied: the reduction of the gas gain and changes of the drift time. Whereas the…

High Energy Physics - Experiment · Physics 2009-10-31 G. Scherberger , V. Paschhoff , V. Waldmann , U. Landgraf , G. Herten , W. Mohr

The Dynamic Template is applied to muscle cells, and is shown to provide a feedback mechanism that can co-ordinate the rearrangements of cytoskeletal proteins that accompany contraction

General Physics · Physics 2008-07-15 J. T. Lofthouse

Physically speaking, the delta function like beam-beam nonlinear forces at interaction points (IPs) act as a sum of delta function nonlinear multipoles. By applying the general theory established in ref. 1, in this paper we investigate…

Accelerator Physics · Physics 2008-11-26 Jie Gao