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Ionization profile monitors (IPMs) are widely used in accelerators for non-destructive and fast diagnostics of high energy particle beams. Two such monitors - one vertical and one horizontal - are being developed for installation in the…

Accelerator Physics · Physics 2024-06-24 H. Piekarz , A. Romanov , R. Thurman-Keup , V. Shiltsev

We develop a universal framework which allows quickly solve a wide class of problems for longitudinal space charge effects in beams and plasmas in cylindrical geometry. We introduce the longitudinal dielectric permittivity for the beam of…

Plasma Physics · Physics 2021-09-15 Nikolai Yampolsky , Kip Bishofberger

The shift in chemical equilibria due to isotope substitution is often exploited to gain insight into a wide variety of chemical and physical processes. It is a purely quantum mechanical effect, which can be computed exactly using…

Statistical Mechanics · Physics 2014-07-04 Michele Ceriotti , Thomas E. Markland

Investigation of the inherent field-driven charge transport behaviour of 3D lead halide perovskites has largely remained a challenging task, owing primarily to undesirable ionic migration effects near room temperature. In addition, the…

The perovskite oxides are known to be susceptible to structural distortions over a long wavelength when compared to their parent cubic structures. From an ab initio simulation perspective, this requires accurate calculations including many…

Computational Physics · Physics 2022-02-16 Jack S. Baker , Tsuyoshi Miyazki , David R. Bowler

This paper presents the final physics design of the Proton Improvement Plan-II (PIP-II) at Fermilab, focusing on the linear accelerator (Linac) and its beam transfer line. We address the challenges in longitudinal and transverse lattice…

Accelerator Physics · Physics 2024-06-03 Abhishek Pathak , Arun Saini , Eduard Pozdeyev

Transverse beam stability is strongly affected by the beam space charge. Usually it is analyzed with the rigid-beam model. However this model is only valid when a bare (not affected by the space charge) tune spread is small compared to the…

Accelerator Physics · Physics 2009-04-08 Alexey Burov , Valeri Lebedev

The negative thermal expansion (NTE) effect has been found generally combined with structural phase transitions. However, the charge and orbital freedoms of the NTE has not been well studied. This study employs angle-resolved photoemission…

Materials Science · Physics 2025-07-30 Peng Li , Xiaohui Yang , Wenhua Song , Zhefeng Lou , Tongrui Li , Zhengtai Liu , Zhu'an Xu , Zhuoyu Chen , Xiao Lin , Yang Liu

In the framework of the LHC Injectors Upgrade project, the CERN Proton Synchrotron underwent hardware changes during the Long Shutdown 2. These changes required an update of the CERN Proton Synchrotron impedance model and an assessment of…

Accelerator Physics · Physics 2025-05-15 Sébastien Joly , Mauro Migliorati , Nicolas Mounet , Benoît Salvant

Electromagnetic fields induced by the space charge in relativistic beams play an important role in Accelerator Physics. They lead to emittance growth, slice energy change, and the microbunching instability. Typically, these effects are…

Accelerator Physics · Physics 2021-02-03 Petr M. Anisimov , Nikolai Yampolsky

Effect of image charges on reconstruction of focusing elements calibration with differential trajectory method is estimated and found negligible for measurements at the PIP2IT MEBT.

Accelerator Physics · Physics 2018-10-11 Alexander Shemyakin

Longitudinal space charge (LSC) effects are generally considered harmful in free-electron lasers as they can seed unfavorable energy modulations that can result in density modulations with associated emittance dilution. It was pointed out,…

Accelerator Physics · Physics 2016-07-28 A. Halavanau , P. Piot

An experimental and computational investigation of the space-charge effects occurring in ultrafast photoelectron spectroscopy from the gas phase is presented. The target sample CF$_3$I is excited by ultrashort (100 fs) far-ultraviolet…

The influence od space-time curvature on quantum matter which can be theoretically described by covariant wave equations has not been experimentally established yet. In this paper we analyse in detail the suitability of the Ramsey atom beam…

General Relativity and Quantum Cosmology · Physics 2009-10-22 Jürgen Audretsch , Karl-Peter Marzlin

We report a comprehensive experimental investigation of orbital-to-charge conversion in metallic and semiconductor materials, emphasizing the fundamental roles of the inverse orbital Hall effect (IOHE) and the inverse orbital Rashba effect.…

Mesoscale and Nanoscale Physics · Physics 2026-03-26 E. Santos , J. L. Costa , R. L. Rodriguez-Suarez , J. B. S. Mendes , A. Azevedo

The generation of spin-orbital currents is crucial for advancing energy-efficient spintronic devices. Here, the intricate process involved in the generation and conversion of spin and orbital to charge currents in Zr(t=2, 3, 4.5, 6,…

LiteBIRD, a forthcoming satellite mission, aims to measure the polarization of the Cosmic Microwave Background (CMB) across the entire sky. The experiment will employ three telescopes, Transition-Edge Sensor (TES) bolometers and rotating…

Galactic cosmic rays and solar energetic particles charge gold-platinum, free-falling test masses (TMs) on board interferometers for the detection of gravitational waves in space. The charging process induces spurious forces on the test…

Space Physics · Physics 2021-02-03 Catia Grimani , Andrea Cesarini , Michele Fabi , Mattia Villani

A method is presented that enables to compute the parameters of matched beams with space charge in cyclotrons with emphasis on the effect of the transverse-longitudinal coupling. Equations describing the transverse-longitudinal coupling and…

Accelerator Physics · Physics 2012-01-05 C. Baumgarten

The residual atmospheric drag on satellites in Very Low Earth Orbit (VLEO) has been recognized as a limiting factor for satellite lifetimes. This work focuses on one component of the drag, i.e., the ionospheric drag from charged particles,…

Space Physics · Physics 2025-08-22 J. Skacel , P. Parodi , G. Gangemi , F. Bariselli , Z. Bonaventura , T. Magin
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