Scholarly Research Exchange

Scholarly Research Exchange / 2009 / Article

Research Article | Open Access

Volume 2009 |Article ID 608735 | 7 pages | https://doi.org/10.3814/2009/608735

Thermal Management of Wide-Beam Area X-Ray Sources

Received14 Apr 2009
Revised22 Jul 2009
Accepted09 Aug 2009
Published01 Nov 2009

Abstract

A wide-beam area X-ray source has been envisioned as capable of delivering X-ray radiation similar to a synchrotron source in terms of the magnitude of photon flux, energy range, and collimation for clinical Diffraction Enhanced Imaging (DEI) applications. Since most of the electron beam energy used to generate the X-rays is deposited in the target material as heat, a cooling system which ensures adequate thermal management is critical to the design. Previous work has shown the feasibility of a prototype scale target with heat fluxes equivalent to those envisioned for an industrial scale system. In this study, a cooling system for an industrial scale target is proposed which is capable of handling a maximum uniform heat flux of 11.693×106 W/m2 for a total thermal loading of 180 kW (3 Amp beam current at 60 kV accelerating voltage). The target behavior was simulated using the CFD code, ANSYS CFX. The simulation results show that target integrity can be maintained for highly non uniform heat fluxes with moderate coolant velocities and pumping powers.

References

  1. C. H. Kim, A study of monochromatic X-ray area beam for application in diffraction enhanced imaging, Ph.D. dissertation, North Carolina State University, Raleigh, NC, USA, 2007.
  2. E. Pisano, E. Johnson, D. Chapman et al., “Clinical diffraction enhanced mammography unit,” NCSU and UNC-CH, Invention Disclosure, July 2000. View at: Google Scholar
  3. E. D. Pisano, D. Chapman, D. Sayers et al., “Design of a clinical diffraction enhanced imaging unit for breast imaging,” in Proceedings of the16th Annual Radiology Research Symposium, University of North Carolina, March 2001. View at: Google Scholar
  4. E. D. Pisano, D. Chapman, D. Sayers et al., “Diffraction enhanced imaging (DEI) of human breast cancer specimens,” in Proceedings of the 16th Annual Radiology Research Symposium, University of North Carolina Chapel Hill, March 2001. View at: Google Scholar
  5. N. A. Bobolea, Thermal design of wide beam area x-ray sources, M.S. thesis, North Carolina State University, Raleigh, NC, USA, 2009.
  6. C. H. Kim, J. M. Doster, and M. A. Bourham, “Wide-beam x-ray source target thermal management simulation using inner jet cooling,” Scholarly Research Exchange, 2009. View at: Publisher Site | Google Scholar
  7. ANSYS Inc., “User manual,” ANSYS CFX Release 11.0, 2006. View at: Google Scholar
  8. ANSYS Inc., “User manual,” ANSYS ICEM CFD/AI Environment Release 11.0, 2007. View at: Google Scholar
  9. ANSYS Inc., “ANSYS CFX-solver theory guide,” ANSYS CFX Release 11.0, 2006. View at: Google Scholar
  10. H. Tennekes and J. L. Lumley, A First Course in Turbulence, MIT Press, Cambridge, Mass, USA, 1972.
  11. D. C. Wilcox, Turbulence Modeling for CFD, DCW Industries Inc., 1994.
  12. MatWeb, “100% pure Molybdenum annealed data sheet,” Marketech International Inc. View at: Google Scholar

Copyright © 2009 Nicolae A. Bobolea et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


More related articles

76 Views | 0 Downloads | 0 Citations
 PDF  Download Citation  Citation
 Download other formatsMore
 Order printed copiesOrder

Related articles

We are committed to sharing findings related to COVID-19 as quickly and safely as possible. Any author submitting a COVID-19 paper should notify us at help@hindawi.com to ensure their research is fast-tracked and made available on a preprint server as soon as possible. We will be providing unlimited waivers of publication charges for accepted articles related to COVID-19. Sign up here as a reviewer to help fast-track new submissions.