Title :
Beam-target interaction experiments for bremsstrahlung converter applications
Author :
Sampayan, S. ; Buckles, R. ; Caporaso, G. ; Chen, Y.J. ; Crist, C. ; Falabella, S. ; Houck, T. ; Krogh, M. ; McCarrick, J. ; Richardson, R. ; Sanders, D. ; Weir, J. ; Westenskow, G.
Author_Institution :
Lawrence Livermore Nat. Lab., CA, USA
Abstract :
For multi-pulse radiography facilities, we are investigating the possible adverse effects of (1) backstreaming ion emission from the bremsstrahlung converter target and (2) the interaction of the resultant plasma with the electron beam during subsequent pulses. These effects would primarily manifest themselves in a static focusing system as a rapidly varying X-ray spot. To study these effects, we are conducting beam-target interaction experiments on the ETA-II accelerator (a 6.0 MeV, 2.5 kA, 70 ns FWHM pulsed, electron accelerator) by measuring spot dynamics and characterizing the resultant plasma for various configurations
Keywords :
X-ray production; bremsstrahlung; collective accelerators; electron accelerators; electron beam focusing; electron beams; linear accelerators; nuclear bombardment targets; particle beam diagnostics; particle beam dynamics; radiography; 2.5 kA; 6 MeV; ETA-II accelerator; backstreaming ion emission; beam-target interaction experiments; bremsstrahlung converter applications; electron accelerator; electron beam; linear induction accelerator; multipulse radiography; rapidly varying X-ray spot; spot dynamics measurement; static focusing system; Electron accelerators; Electron beams; Laboratories; Particle beams; Plasma accelerators; Plasma measurements; Plasma x-ray sources; Pulse measurements; Radiography; X-ray imaging;
Conference_Titel :
Particle Accelerator Conference, 1999. Proceedings of the 1999
Conference_Location :
New York, NY
Print_ISBN :
0-7803-5573-3
DOI :
10.1109/PAC.1999.795529
