نتایج جستجو برای: particle beam dynamic

تعداد نتایج: 675886  

2017
Rogelio Tomás Masamitsu Aiba Paul Scherrer Andrea Franchi Ubaldo Iriso

Measurement and correction of charged particle beam optics have been a major concern since the advent of strong focusing synchrotron accelerators. Traditionally, particle colliders have led the development of optics control based on turn-by-turn beam centroid measurements, while lepton storage rings have focused on closed-orbit-response matrix techniques. Recently, considerable efforts are bein...

Journal: :Journal of the Optical Society of America A 2012

Journal: :Optics express 2011
José A Rodrigo Antonio M Caravaca-Aguirre Tatiana Alieva Gabriel Cristóbal María L Calvo

Three-dimensional microparticle movements induced by laser beams with a funnel- and tubular pod-like structure, in the neighbourhood of the focal plane of an optical trapping setup, are experimentally studied. The funnel and pod beams constructed as coherent superpositions of helical Laguerre-Gaussian modes are synthesized by a computer generated hologram using a phase-only spatial light modula...

Journal: :Optics express 2012
Martin Šiler Petr Jákl Oto Brzobohatý Pavel Zemánek

An interaction between a light field with complex field spatial distribution and a micro-particle leads to forces that drag the particle in space and may confine it in a stable position or a trajectory. The particle behavior is determined by its size with respect to the characteristic length of the spatially periodic or symmetric light field distribution. We study theoretically and experimental...

احمدی, اسماعیل, سعیدی, فرهاد, قاسم, حسین,

The Iranian Light Source Facility (ILSF) as a national project is a 3 GeV third generation synchrotron light source facility which provides high energy super bright X-ray for the users. Design of the ILSF storage ring emphasizes an ultra low electron beam emittance (below than 5 nm.rad), beam current of 400 mA, great brightness, stability and reliability which make it competitive in the operati...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده فنی 1393

مهمترین فاکتور موفقیت در معاملات فارکس توانایی پیش بینی صحیح نوسانات آینده بازار است. بعلت وجود عوامل تاثیرگذار مختلف بر نوسانات نرخ ارز، اخذ تصمیمات صحیح در خصوص خرید و فروش بسیار مشکل است و نیاز به دانش و تجربه فراوان دارد. پیش¬بینی قیمت در بازارهای مالی، موضوعی جذاب برای پژوهشگران بوده است. هدف از این پژوهش، ارائه یک سیستم توصیه گر معاملاتی براساس یک مدل ترکیبی هوش مصنوعی است. این مدل از س...

2017
Etienne Lemaire Benjamin Caillard Mohamed Youssry Isabelle Dufour

In general, microrheology is carried out using active or passive particle-tracking techniques. In the present paper, a novel technique based on the out-of-plane bending vibrations of a microcantilever beam immersed into a liquid is proposed for microrheological property measurement. We propose to analytically link the damped beam motion with the rheological properties of the fluid in order to e...

2016
Satyabrata Kar Hamad Ahmed Rajendra Prasad Mirela Cerchez Stephanie Brauckmann Bastian Aurand Giada Cantono Prokopis Hadjisolomou Ciaran L S Lewis Andrea Macchi Gagik Nersisyan Alexander P L Robinson Anna M Schroer Marco Swantusch Matt Zepf Oswald Willi Marco Borghesi

All-optical approaches to particle acceleration are currently attracting a significant research effort internationally. Although characterized by exceptional transverse and longitudinal emittance, laser-driven ion beams currently have limitations in terms of peak ion energy, bandwidth of the energy spectrum and beam divergence. Here we introduce the concept of a versatile, miniature linear acce...

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