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Browsing 02.National Laboratory Astana by Type "Conference Paper"

Browsing 02.National Laboratory Astana by Type "Conference Paper"

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  • Multiscale simulation of ion beam impacts on a graphene surface 
    Dybyspayeva, K. B.; Zhuldassov, A.; Ainabayev, A.; Vyatkin, A. F.; Alekseev, K.; Insepov, Z. (IOP Publishing, 2016-09)
    Multiscale study of single and multilayer graphene irradiation is presented in this paper. Ab-initio density-functional theory (DFT) was used to study point defects, and a large scale parallel molecular-dynamics (MD) ...
  • On Various Approaches to Machine Translation from Russian to Kazakh 
    Makazhanov, Aibek; Myrzakhmetov, Bagdat; Kozhirbayev, Zhanibek (Tatarstan Academy of Sciences, 2017-10-21)
    In this work we compare a number of approaches to machine translation (MT) form Russian to Kazakh. We focus specifically on this pair of languages for a number of reasons. First, these languages are relatively understudied ...
  • Radiation-induced synergistic effects of athermal and thermal mechanisms on erosion and surface evolution of advanced electrode and condenser optics materials 
    Allain, J. P.; Hassanein, A.; Burtseva, T.; Yacout, A.; Insepov, Z.; Taj, S.; Rice, B. J. (Proceedings of SPIE, 2004-02)
    In extreme ultraviolet lithography (EUVL) environments transient plasma dynamics dictate conditions for particle/surface interactions. A critical challenge facing EUVL development is optic component lifetime both in ...
  • Simulation of ion implantation into nuclear materials and comparison with experiment 
    Insepov, Z.; Yun, D.; Ye, B.; Rest, J.; Starikov, S.; Yacout, A. M. (American Institute of Physics, 2011-06)
    Radiation defects generated in Mo formed by sub-MeV Xe ion implantations were studied by atomistic molecular dynamics based on interatomic potential matched to density functional calculations. The results of the simulations ...
  • Simulations of Fast X-Ray Detectors Based on Multichannel Plates 
    Adams, B.; Insepov, Z.; Ivanov, V.; Norem, J. (Proceedings of IPAC2012, New Orleans, Louisiana, 2012)
    High-performance detectors with high spatial and time resolutions are required in applications such as imaging of fast processes, time-resolved coherent scattering, and time-resolved X-ray spectroscopy. Recently a new type ...
  • Spoken term detection for Kazakh language 
    Kozhirbayev, Zhanibek; Karabalayeva, Muslima; Yessenbayev, Zhandos (The 4-th International Conference on Computer Processing of Turkic Languages, 2016-08-21)
    The paper presents a spoken term detection system for Kazakh language in which significant improvements are obtained through modifying speech-to-text process used for generating word- based lattices. These lattices are ...
  • Study of Electron Swarm in High Pressure Hydrogen Gas Filled RF Cavities 
    Yonehara, K.; Chung, M.; Popovic, M.; Moretti, A.; Wang, H.; Alsharo'a, M.; Insepov, Z. (Fermilab, 2010)
    A high pressure hydrogen gas filled RF cavity has been proposed for use in the muon collection system for a muon collider. It allows for high electric field gradients in RF cavities located in strong magnetic fields, a ...
  • The Interactions of Surface Damage on RF Cavity Operation 
    Norem, J.; Bross, A.; Hassanein, A.; Qian, Z.; Yoon, K. E.; Moretti, A.; Li, D. (Fermilab, 2006-06)
    Studies of low frequency RF systems for muon cooling has led to a variety of new techniques for looking at dark currents, a new model of breakdown, and, ultimately, a model of RF cavity operation based on surface damage. ...
  • The problem of RF gradient limits 
    Norem, J.; Insepov, Z.; Huang, D.; Mahalingam, S.; Veitzer, S. (American Institute of Physics, 2010-03)
    We describe breakdown in rf accelerator cavities in terms of a number of mechanisms. We divide the breakdown process into three stages: 1) we model surface failure using molecular dynamics of fracture caused by electrostatic ...
  • Vacuum arcs and gradient limits 
    Norem, J.; Moretti, A.; Insepov, Z. (Proceedings of 2011 Particle Accelerator Conference, New York, 2011)
    We have been extending and refining our model of vacuum breakdown and gradient limits and describe recent developments. The model considers a large number of mechanisms, but finds that vacuum arcs can be described fairly ...