نتایج جستجو برای: particle accelerator

تعداد نتایج: 189238  

Journal: :Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology 2012
Nasrollah Jabbari Amir Hoshang Barati Leili Rahmatnezhad

AIM The aim of this work was to develop multiple-source models for electron beams of the NEPTUN 10PC medical linear accelerator using the BEAMDP computer code. BACKGROUND One of the most accurate techniques of radiotherapy dose calculation is the Monte Carlo (MC) simulation of radiation transport, which requires detailed information of the beam in the form of a phase-space file. The computing...

1992
M. S. Avilov J. T. Seeman

The characterization of transverse particle distributions of bunches with non-Gaussian shapes is difficult due to a wide variety of possibilities [l]. Without knowing additional information one can tit a distribution using first-, second-, third-, and higher order moments [2]. These moments can then be used to describe beam shape changes along the accelerator, but with limited knowledge of the ...

Journal: :International journal of prognostics and health management 2023

Early fault detection and prognosis are crucial to ensure efficient safe operations of complex engineering systems such as the Spallation Neutron Source (SNS) its power electronics (high voltage converter modulators). Following an advanced experimental facility setup that mimics SNS operating conditions, authors successfully conducted 21 early experiments, where precursors introduced in system ...

احمدی, اسماعیل, جزایری, مسعود, رحیقی, جواد, سعیدی, فرهاد, ملا باشی, محمود,

Storage rings are extensively used for particle colliders, damping rings and light sources. To further increase the luminosity at the colliders or brightness of a synchrotron light sources, the emittance of accelerator beam is being continually pushed downward in storage rings. In this paper, we investigate the lattice design for the storage ring of Iranian Light Source Facility (ILSF) with an ...

Journal: :Physical review letters 2004
O J Luiten S B van der Geer M J de Loos F B Kiewiet M J van der Wiel

Uniform three-dimensional ellipsoidal distributions of charge are the ultimate goal in charged particle accelerator physics because of their linear internal force fields. Such bunches remain ellipsoidal with perfectly linear position-momentum phase space correlations in any linear transport system. We present a method, based on photoemission by radially shaped femtosecond laser pulses, to actua...

2005
John R. Hiller S. J. Brodsky C. E. Carlson A. V. Volotka

Stanley J. Brodsky,1, ∗ Carl E. Carlson,2, † John R. Hiller,3, ‡ and Dae Sung Hwang4, § Stanford Linear Accelerator Center, Stanford University, Stanford, CA 94309 Particle Theory Group, Physics Department, College of William and Mary, Williamsburg, VA 23187-8795 Department of Physics, University of Minnesota-Duluth, Duluth, MN 55812 Department of Physics, Sejong University, Seoul 143-747, Kore...

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