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We propose an efficient approach to improve few-cycle soliton compression with cascaded quadratic nonlinearities by using an engineered multi-section structure of the nonlinear crystal. By exploiting engineering of the cascaded quadratic…

Optics · Physics 2015-06-11 Xianglong Zeng , Hairun Guo , Binbin Zhou , Morten Bache

Leveraging the potential of low-field Magnetic Resonance Imaging (MRI), our study introduces the multimodal surface RF coil, a design tailored to overcome the limitations of conventional coils in this context. The inherent challenges of…

Medical Physics · Physics 2024-01-02 Yunkun Zhao , Aditya A Bhosale , Xiaoliang Zhang

This paper introduces a new methodology for designing and optimizing the performance of hydraulic Cross-Flow turbines for a wide range of operating conditions. The methodology is based on a one-step approach for the system-level design…

Fluid Dynamics · Physics 2021-02-22 Goodarz Mehr , Mohammad Durali , Mohammad Hadi Khakrand , Hadi Hoghooghi

Permanent magnet electron optics offer many advantages over electromagnets, and are being increasingly used in high-energy (GeV) electron accelerator designs. Here, we identify the advantages of permanent magnet electron optics for…

Accelerator Physics · Physics 2026-05-29 Ameya Patwardhan , Bas van der Geer , Jom Luiten , Julius Huijts

The standard design method for conventional straight dipole magnets is improved in this paper. The good field region is not symmetric with respect to the magnet mechanical center, and its width is not enlarged to include the beam sagitta.…

Accelerator Physics · Physics 2017-04-24 Yingshun Zhu , Wen Kang , Fusan Chen , Wan Chen , Xi Wu , Mei Yang

A pulsed electron gun that can produce MHz repetition rate nanosecond pulses is described. The gun uses a Pierce grid in combination with an anode to extract electrons from a tungsten filament cathode. The electrons emerging from the anode…

Instrumentation and Detectors · Physics 2024-02-06 Andrew James Murray , Joshua Rogers

Transcranial magnetic stimulation (TMS) is a popular method for the noninvasive stimulation of neurons in the brain. It has become a standard instrument in experimental brain research and is approved for a range of diagnostic and…

Medical Physics · Physics 2023-12-27 Max Koehler , Stefan Goetz

Ultrahigh-field MRI, such as those operating at 7 Tesla, enhances diagnostic capabilities but also presents unique challenges, including the need for advanced RF coil designs to achieve an optimal signal-to-noise ratio and transmit…

Medical Physics · Physics 2025-02-11 Yunkun Zhao , Komlan Payne , Leslie Ying , Xiaoliang Zhang

The development of quantum computers based on superconductors requires the improvement of the qubit state control approach aimed at the increase of the hardware energy efficiency. A promising solution to this problem is the use of…

Quantum Physics · Physics 2023-10-19 Vsevolod Vozhakov , Marina Bastrakova , Nikolay Klenov , Arkady Satanin , Igor Soloviev

In this paper, secondary ferrite cores and resonant structures have been used for field enhancement. The tissue was placed between the double square source coil and the secondary ferrite core. Resonant coils were added which aided in…

Medical Physics · Physics 2016-09-28 Raunaq Pradhan , Yuanjin Zheng

Planar electromagnetic actuators based on the principle of linear motors are widely employed for micro and nano positioning applications. These actuators usually employ a planar magnetic platform driven by a co-planar electromagnetic coil.…

Applied Physics · Physics 2025-01-22 K. S. Vikrant , D. Dadkhah , S. O. Reza Moheimani

Current quantum programs are mostly synthesized and compiled on the gate-level, where quantum circuits are composed of quantum gates. The gate-level workflow, however, introduces significant redundancy when quantum gates are eventually…

In order to investigate and understand the influence of gun design, cathode preparation and operational parameters on the beam quality it is important to have reliable and accurate beam diagnostics available. The focus of this work was thus…

Accelerator Physics · Physics 2013-07-15 Martin Anton Helmut Schmeißer

Transcranial magnetic stimulation (TMS) with asymmetric electric field pulses, such as monophasic, offers directional selectivity for neural activation but requires excessive energy. Previous pulse shape optimisation has been limited to…

The interaction of micro- and nano-structured target surfaces with high-power laser pulses is being widely investigated for its unprecedented absorption efficiency. We have developed vertically aligned metallic micro-pillar arrays for…

A novel technique of the measurement data processing is developed which allows to apply the rotating coil method for measurement of a dynamic magnetic field, periodic in time. The developed technique allows to obtain time-dependent…

Accelerator Physics · Physics 2015-06-12 V. Marusov

Gas turbine engines are highly efficient and powerful because of their high-pressure turbines (HPTs). Furthermore, stationary blades shape and prepare high-pressure gas for efficient utilization by moving blades. Consequently, optimizing…

Fluid Dynamics · Physics 2024-01-05 Seyed Ehsan Hosseini , Saeid Jafaripanah , Zoheir Saboohi

Several methods have been proposed in the literature to improve Free Electron Laser output by transforming the electron phase-space before entering the FEL interaction region. By utilising `beam by design' with novel undulators and other…

Accelerator Physics · Physics 2015-09-02 J. R. Henderson , L. T. Campbell , B. W. J. McNeil

In this paper, the Hook-Jews (HJ) optimization method is used to optimize a 3-phase Squirrel-Cage Induction Motor (SCIM) as an Electric Vehicle's (EV) motor. Optimal designs with different numbers of poles, different nominal and maximum…

Systems and Control · Electrical Eng. & Systems 2023-03-01 Arash Mousaei , Sahar Aziz Mohammadabadi

Laser-solid interaction can lead to the acceleration of protons to tens of MeV. Here, we show that a strong enhancement of this acceleration can be achieved by splitting the laser pulse to two parts of equal energy and opposite incidence…

Plasma Physics · Physics 2019-03-11 J. Ferri , E. Siminos , T. Fülöp