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Materials of conferences and seminars

Materials of conferences and seminars

 

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  • 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 ...
  • Insepov, Z.; Norem, J.; Vetizer, S.; Mahalingam, S. (American Institute of Physics, 2011-12)
    Although vacuum arcs were first identified over 110 years ago, they are not yet well understood. We have since developed a model of breakdown and gradient limits that tries to explain, in a self-consistent way: arc triggering, ...
  • Insepov, Z.; Ivanov, V.; Jokela, S.; Wetstein, M. (Proceedings of 2011 Particle Accelerator Conference, New York, 2011)
    We use “microscopic” Monte Carlo (MC) simulations, empirical theories, and comparison with experiments to identify the influence of back-scattered electrons and the saturation effect on the emissive properties of materials ...
  • Chung, M.; Tollestrup, A.; Jansson, A.; Yonehara, K.; Insepov, Z. (Proceedings of IPAC’10, Kyoto, Japan, 2010)
    Ionization cooling is a critical building block for the realization of a muon collider. To suppress breakdown in the presence of the external magnetic field, an idea of using an RF cavity filled with high pressure hydrogen ...
  • Insepov, Z.; Norem, J.; Hassanein, A.; Wu, A. T. (American Institute of Physics, 2009-03)
    Surface erosion problems are common in the development of TeV accelerators, fusion and fission reactors, semiconductor, optical and magnetic storage devices, and Extreme Ultra-Violet (EUV) lithography devices. We have ...
  • Insepov, Z.; Bazhirov, T.; Norman, G.; Stegailov, V. (Joint International Topical Meeting on Mathematics & Computation and Supercomputing in Nuclear Applications, 2007-04)
    Properties of liquid metals (Li, Pb, Na) containing nanoscale cavities were studied by atomistic Molecular Dynamics (MD). Two atomistic models of cavity simulation were developed that cover a wide area in the phase diagram ...
  • Norem, J.; Hassanein, A.; Insepov, Z.; Konkashbaev, I. (Proceedings of 2005 Particle Accelerator Conference, Knoxville, Tennessee, 2005)
    We present a simple model of breakdown in rf cavities. For most events this involves tensile stress and tensile strength, however other effects can also contribute. We discuss the effects of different materials, fatigue, ...
  • 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 ...
  • Insepov, Z.; Norem, J.; Veitzer, S. (American Institute of Physics, 2011-06)
    Ion solid interactions have been shown to be an important new mechanism of unipolar arc formation in high-gradient rf linear accelerators through surface self-sputtering by plasma ions, in addition to an intense surface ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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. ...
  • Norem, J.; Insepov, Z. (Proceedings of NAPAC2016, Chicago, IL, USA, 2017-01)
    We are developing a general model of breakdown and gradient limits that applies to accelerators, along with other high field applications such as power grids and laser ablation. We have considered connections with failure ...
  • Norem, J.; Insepov, Z. (American Institute of Physics, 2016-10)
    We explore the reasons why there seems to be no common model for vacuum arcs, in spite of the importance of the field and the level of effort expended over more than one hundred years.
  • 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) ...
  • Adams, B.; Anderson, J. T.; Attenkofer, K.; Bogdan, M.; Byrum, K.; Drake, G.; Insepov, Z. (In Real Time Conference, 2009. RT'09. 16th IEEE-NPSS (pp. 49-61). IEEE., 2009)
    We present a preliminary design and the results of simulation for a photo-detector module to be used in applications requiring the coverage of areas of many square meters with time resolutions less than 10 picoseconds and ...
  • Norem, J.; Insepov, Z.; Bauer, P.; Seidman, D.N.; Sebastian, J.; Yoon, K. (Proceedings of the 12th International Workshop on RF Superconductivity, Cornell University, 2005)
    Field emission in cavities requires electric fields that can be high enough to damage materials. We outline a model of breakdown and field emission from local asperities, and show how electric field effects, and field ...
  • Aoki, T.; Matsuo, J.; Insepov, Z.; Yamada, I. (Ion Implantation Technology Proceedings, 1998 …, 1999, 1999)
    Cluster ion implantation using decaborane (B,J-I,,) has been proposed as a useful technique for shallow junction formation. In order to examine the characteristics and advantages of cluster ion implantation, molecular ...
  • Insepov, Zinetulla; Aoki, T.; Matsuo, J.; Yamada, I. (IEEE. Ion Implantation Technology Proceedings, 1998 International Conference, 1999-12)
    Molecular Dynamics (MD) and Metropolis Monte- Carlo (MMC) models of monomer B and decaborane implantation into Si and following rapid thermal annealing (RTA) processes have been developed. The implanted B dopant and Si-atomic ...

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