Author: Pellemoine, F.
Paper Title Page
MOPA63 Multiphysics Simulation of the Thermal Response of a Nanofibrous Target in a High-Intensity Beam 185
  • W.J. Asztalos
    IIT, Chicago, Illinois, USA
  • S.K. Bidhar, F. Pellemoine
    Fermilab, Batavia, Illinois, USA
  • P. Rath
    IIT Bhubaneswar, Jatni, India
  • Y. Torun
    Illinois Institute of Technology, Chicago, Illlinois, USA
  Nanofibrous structures are of high interest to the fields of engineering and materials science, and investigation of their properties as well as discovery of novel applications for them both constitute lively areas of research. A very promising application of nanofiber mats lies in the field of accelerator technology: beam targets made from nanofiber mats offer a solution to the problem of advancing the "intensity frontier"–-the limit on the beam intensities that can be realized in fixed target experiments and neutrino production facilities. However, testing has shown that the survivability of these nanofiber targets depends strongly on their manufacturing parameters, such as the packing density of fibers. In this work, we will use multiphysics simulations to perform a thermal study on how nanofiber targets react to high intensity beams, so that the dependency of the targets’ lifetime on their construction parameters can be better understood.  
poster icon Poster MOPA63 [3.656 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-MOPA63  
About • Received ※ 14 July 2022 — Revised ※ 02 August 2022 — Accepted ※ 04 August 2022 — Issue date ※ 25 August 2022
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Radiation Concerns and Mitigation Schemes for Accelerator Facility Components  
  • F. Pellemoine
    Fermilab, Batavia, Illinois, USA
  Major accelerator facilities are limited in beam power not by their accelerators but by the beam intercepting device survivability. In some cases, the target must endure high power pulsed beam, leading to high cycle thermal shocks. Most of the time, the increased beam power creates significant challenges such as corrosion and radiation damage that causes harmful effects on the material and degrades their mechanical and thermal properties during irradiation. This can eventually lead to the failure of the material and drastically reduced lifetime of targets and beam intercepting devices. In order to operate reliable beam-intercepting devices in the framework of energy and intensity increase projects of the future, it is essential to develop a strong R&D program and have synergy with various expertise. Based on those strong R&D programs, several ways exist to mitigate radiation damage in material in order to increase lifetime of targets in accelerators. After presenting the high-power target challenges facing next generation accelerators with few examples of international facilities, I will provide few ways to mitigate radiation damages in target material.  
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