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. Thus far, our experiments show that the first effect is not strongly present when the beam initially interacts with the target. Electron beam pulses delivered to the target after formation of a plasma are strongly affected, however. We have also performed initial experiments to determine the effect of the beam propagating through the plasma. This data shows that the head of the beam is relatively robust, but that backstreaming ions from the plasma can still manifest itself as a dynamic focus toward the tail of the beam. We report on the details of our experimental work to study these effects.
| Original language | English (US) |
|---|---|
| Title of host publication | Proceedings of the IEEE Particle Accelerator Conference |
| Place of Publication | Piscataway, NJ, United States |
| Publisher | IEEE |
| Pages | 1303-1305 |
| Number of pages | 3 |
| Volume | 2 |
| State | Published - 1999 |
| Externally published | Yes |
| Event | The 18th Biennial Particle Accelerator Conference - New York, NY, USA Duration: Mar 27 1999 → Apr 2 1999 |
Other
| Other | The 18th Biennial Particle Accelerator Conference |
|---|---|
| City | New York, NY, USA |
| Period | 3/27/99 → 4/2/99 |
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ASJC Scopus subject areas
- Engineering(all)
Cite this
Beam-target interaction experiments for Bremsstrahlung converter applications. / Sampayan, S.; Buckles, R.; Caporaso, George J; Chen, Y. J.; Crist, C.; Falabella, S.; Houck, T.; Krogh, M.; McCarrick, J.; Richardson, R.; Sanders, D.; Weir, J.; Westenskow, G.
Proceedings of the IEEE Particle Accelerator Conference. Vol. 2 Piscataway, NJ, United States : IEEE, 1999. p. 1303-1305.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Beam-target interaction experiments for Bremsstrahlung converter applications
AU - Sampayan, S.
AU - Buckles, R.
AU - Caporaso, George J
AU - Chen, Y. J.
AU - Crist, C.
AU - Falabella, S.
AU - Houck, T.
AU - Krogh, M.
AU - McCarrick, J.
AU - Richardson, R.
AU - Sanders, D.
AU - Weir, J.
AU - Westenskow, G.
PY - 1999
Y1 - 1999
N2 - 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. Thus far, our experiments show that the first effect is not strongly present when the beam initially interacts with the target. Electron beam pulses delivered to the target after formation of a plasma are strongly affected, however. We have also performed initial experiments to determine the effect of the beam propagating through the plasma. This data shows that the head of the beam is relatively robust, but that backstreaming ions from the plasma can still manifest itself as a dynamic focus toward the tail of the beam. We report on the details of our experimental work to study these effects.
AB - 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. Thus far, our experiments show that the first effect is not strongly present when the beam initially interacts with the target. Electron beam pulses delivered to the target after formation of a plasma are strongly affected, however. We have also performed initial experiments to determine the effect of the beam propagating through the plasma. This data shows that the head of the beam is relatively robust, but that backstreaming ions from the plasma can still manifest itself as a dynamic focus toward the tail of the beam. We report on the details of our experimental work to study these effects.
UR - http://www.scopus.com/inward/record.url?scp=0033347756&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033347756&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0033347756
VL - 2
SP - 1303
EP - 1305
BT - Proceedings of the IEEE Particle Accelerator Conference
PB - IEEE
CY - Piscataway, NJ, United States
ER -