Thermal Effects of High Energy Electron Beam Interaction with Materials and Structures


P. V. Degtiarenko


Electron beams produced at the continuous Electron Beam Accelerator Facility (Jefferson Lab) in the range of energies from 400 MeV to 12 GeV produce significant thermal effects when directed onto materials and structures such as beam dumps, experimental targets, and beam line equipment. High power deposition concentration, up to 1 MW localized in a small region around the beam, is capable to produce very fast local temperature rise, resulting in thermal stress, melting and evaporation of the material. It presents serious challenge for control and safety systems. Methods of calculation of time-dependent temperature distributions in materials and structures, including Monte-Carlo modeling of power deposition in an electromagnetic cascade and using Finite Element Analysis models to derive temperature distributions, are discussed in the presentation.


This abstract was presented at the 33rd Annual Midyear Meeting, "Instrumentation, Measurements, and Electronic Dosimetry", Abstracts Session, 1/30/2000 - 2/2/2000, held in Virginia Beach, VA.

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