WEZBB —  Wednesday Parallel Session 6   (04-Sep-19   14:00—16:00)
Chair: M. White, ANL, Lemont, Illinois, USA
Paper Title Page
Accelerator Research and Technology Developments for Industrial Applications  
  • J.C.T. Thangaraj
    Fermilab, Batavia, Illinois, USA
  Accelerator generated particle beams have spawned a range of industrial applications such as food sterilization, wastewater treatment, cargo inspection and material processing. Some of the technologies that form the backbone of these industrial systems have emerged from the accelerator-driven science mission pursued at the national labs. Applying the technologies that are developed at national labs for science and transforming them to solve challenges is of great value that allows new industries to emerge which promotes the long-term economic interest of the society. In this talk, with inputs from other labs, I will present a broad survey of accelerator technology developments that are on-going at the U.S. Department of Energy Laboratories with the emphasis on industrial applications excluding medical applications.  
slides icon Slides WEZBB1 [39.213 MB]  
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IAEA Activities in Support of the Accelerator-Based Research and Applications  
  • A. Simon, S. Charisopoulos
    International Atomic Energy Agency, Physics Section, Div. Physical and Chemical Sciences, Vienna, Austria
  • D. Ridikas, N. Skukan, I.P. Swainson
    IAEA, Vienna, Austria
  Promotion of nuclear applications for peaceful purposes and related capacity building is among the missions of the IAEA. In this context, accelerator applications and nuclear instrumentation is one of the thematic areas, where the IAEA supports its Member States in strengthening their capabilities to adopt and benefit from the usage of accelerators. A number of activities are being implemented focusing on accelerator-based applications in multiple disciplines, e.g. materials characterization and modification, forensics, cultural heritage. This presentation will give an overview on strategies and key priority areas of the Physics Section accelerator sub-programme. The IAEA Accelerator Knowledge Portal which serves as a reference database of various type of accelerators world-wide will be also presented.
IAEA Accelerator Knowledge Portal: https://nucleus.iaea.org/sites/accelerators/
slides icon Slides WEZBB2 [93.099 MB]  
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Ultra-Compact Accelerator for Radioactive Isotope Sources Replacement, Security, NDT and Medical Applications  
  • S. Boucher, R.B. Agustsson, A. Arodzero, S.V. Kutsaevpresenter, A.Yu. Smirnov
    RadiaBeam, Los Angeles, California, USA
  Funding: This work has been partly supported by the U.S. Department of Energy, Office of Defense Nuclear Nonproliferation, under SBIR award DE-SC0015722.
The US and IAEA authorities have identified as a priority the replacement of radioactive sources with alternative technologies, due to the risk of accidents and diversion by terrorists for use in Radiological Dispersal Devices. In particular, enrichment plants that represent one of the most sensitive parts of the nuclear fuel cycle, use the Co-57 based Cascade Header Enrichment Monitor (CHEM) to detect the presence of UF6 gas at low pressures and to determine whether it is highly enriched. RadiaBeam has developed an inexpensive, hand-portable 180 keV Ku-band electron accelerator to replace Co-57 radionuclide source in CHEM detectors. We used an innovative split accelerating structure approacg to design the linac in two halves and to avoid labor-intensive tuning steps. In this paper, we will discuss the accelerator, including X-ray convertor and accelerating structure design. The results of RF measurements of a Ku-band split structure will also be reviewed. Other applications of Ku-band linacs include compact both backscatter- and transmission- X-ray inspection systems, as well as computed tomography for luggage and parcel screening with or without modulated energy pulses.
slides icon Slides WEZBB3 [6.774 MB]  
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High-Power Superconducting Electron Linacs for Commercial Applications  
TUPLH15   use link to see paper's listing under its alternate paper code  
  • C.H. Boulware, S. Baurac, J. Diemer, T.L. Grimm, A.B. Schnepp
    Niowave, Inc., Lansing, Michigan, USA
  Because of advances in niobium cavity resonator design and the continuing development of small helium cryocoolers, superconducting RF linacs have become a viable industrial technology for low-cost, high-power electron beams. These beams are being used to produce high-flux bremsstrahlung x-ray and neutron sources for commercial applications, particularly for the production of radioisotopes. This contribution will cover recent developments in commercial superconducting accelerator technology including thermionic cathode electron guns, superconducting cryomodules, helium cryocoolers, microwave sources, and target stations for the production of medical and industrial isotopes including molybdenum-99 and actinium-225. Machines at different stages of development span the energy range from 2-40 MeV and powers up to hundreds of kW. Connections will be made to high-power machines for high-throughput x-ray sterilization and accelerator-driven systems with electron beams.  
slides icon Slides WEZBB4 [6.352 MB]  
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Modeling and Evaluation Thermionic Energy Converters in the Space-Charge Limit  
  • N.M. Cook, J.P. Edelen, C.C. Hall, Y. Hu, M.V. Keilman, P. Moeller, R. Nagler
    RadiaSoft LLC, Boulder, Colorado, USA
  • J.-L. Vay
    LBNL, Berkeley, California, USA
  Funding: This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of High Energy Physics under Award Number DE-SC0017162.
Thermionic energy converters (TECs) are a promising technology for modular, efficient thermoelectric energy transfer. A TEC is comprised of a narrowly-separated cathode and anode, thermionic emission at the cathode drives a current across the gap which may generate electrical power. For high operating temperatures and large gap distances, currents can meet or exceed the Child-Langmuir limit. The steady-state operation of a TEC depends upon the emission characteristics of the cathode and anode, the presence of intra-gap electrodes, and the self-consistent transport of the electrons in the gap, for which high fidelity simulations with self-consistent emission models and complex boundary interactions are required. We present results from simulations of TECs using the Warp code, developed at Lawrence Berkeley National Lab. We demonstrate newly developed tools to accurately model a broad array of devices, including mesh refinement and cut-cell techniques for improved resolution, Schottky emission from shaped emitter surfaces, and CAD I/O for grid design and optimization. These tools are employed to validate and optimize realistic device designs for future energy applications.
slides icon Slides WEZBB5 [4.415 MB]  
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Development of a 19Ne Source in Search of Chirality Flipping Interactions  
  • A. García, M.E. Higgins, N.C. Hoppispresenter, D.W. Storm
    CENPA, Seattle, Washington, USA
  At the University of Washington we are developing a 19Ne source to be used to search for chirality-flipping interactions a signature of new physics. The 19Ne source is required to provide approx. 1010 atoms/second with low contamination such that the decays can be observed in a low pressure (~10-7 Torr) environment. The 19Ne will be produced via the 19F(p, n)19Ne reaction using a Sulfur Hexafluoride gas target and rapid cryogenic separation. The chirality-flipping interactions will be detected by measuring the beta spectrum using the Cyclotron Radiation Emission Spectroscopy technique. Results will be presented.  
slides icon Slides WEZBB6 [5.136 MB]  
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