Technique for inferring angle change as a function of time for high-current electron beams using a dose-rate monitor array
Abstract
Intense electron beams striking a high-atomic number target produce high-output pulsed photon fluxes for flash x-ray experiments. Without an external guide field, such beams are subject to the dynamics of high-current electron beam propagation, including changes to electron trajectories either from self-fields or from development of beam instabilities. The bremsstrahlung output (dose-rate) scales approximately as IVx, where I is the beam current, V the electron energy, and x is in the range 2.0–2.65 and depends upon the electron angle on the converter. Using experimental beam data (dose-rate, I and V), this equation can be solved for x, a process known as “inverting the radiographer’s equation.” Inversion methods that rely on thermoluminescent dosimeters, which are time-integrated, yield no information about evolution of the electron beam angle in time. We propose here an inversion method that uses several dose-rate monitors at different angles with respect to the beam axis. By measuring dose-rates at different angles, one can infer the time-dependent beam voltage and angle. Furthermore, this method compares well with estimates of corrected voltage and results in a self-consistent picture of beam dynamics. Techniques are demonstrated using data from self-magnetic pinch experiments at the RITS-6 facility at Sandia National Laboratories.
- Authors:
-
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Naval Research Lab., Washington, D.C. (United States). Plasma Physics Div.
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1575256
- Alternate Identifier(s):
- OSTI ID: 1574544
- Report Number(s):
- SAND-2019-5559J
Journal ID: ISSN 0034-6748; 675620
- Grant/Contract Number:
- AC04-94AL85000
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Review of Scientific Instruments
- Additional Journal Information:
- Journal Volume: 90; Journal Issue: 11; Journal ID: ISSN 0034-6748
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION
Citation Formats
Renk, Timothy Jerome, Weber, Bruce V., Rittersdorf, I. M., and Webb, Timothy Jay. Technique for inferring angle change as a function of time for high-current electron beams using a dose-rate monitor array. United States: N. p., 2019.
Web. doi:10.1063/1.5110413.
Renk, Timothy Jerome, Weber, Bruce V., Rittersdorf, I. M., & Webb, Timothy Jay. Technique for inferring angle change as a function of time for high-current electron beams using a dose-rate monitor array. United States. doi:10.1063/1.5110413.
Renk, Timothy Jerome, Weber, Bruce V., Rittersdorf, I. M., and Webb, Timothy Jay. Tue .
"Technique for inferring angle change as a function of time for high-current electron beams using a dose-rate monitor array". United States. doi:10.1063/1.5110413. https://www.osti.gov/servlets/purl/1575256.
@article{osti_1575256,
title = {Technique for inferring angle change as a function of time for high-current electron beams using a dose-rate monitor array},
author = {Renk, Timothy Jerome and Weber, Bruce V. and Rittersdorf, I. M. and Webb, Timothy Jay},
abstractNote = {Intense electron beams striking a high-atomic number target produce high-output pulsed photon fluxes for flash x-ray experiments. Without an external guide field, such beams are subject to the dynamics of high-current electron beam propagation, including changes to electron trajectories either from self-fields or from development of beam instabilities. The bremsstrahlung output (dose-rate) scales approximately as IVx, where I is the beam current, V the electron energy, and x is in the range 2.0–2.65 and depends upon the electron angle on the converter. Using experimental beam data (dose-rate, I and V), this equation can be solved for x, a process known as “inverting the radiographer’s equation.” Inversion methods that rely on thermoluminescent dosimeters, which are time-integrated, yield no information about evolution of the electron beam angle in time. We propose here an inversion method that uses several dose-rate monitors at different angles with respect to the beam axis. By measuring dose-rates at different angles, one can infer the time-dependent beam voltage and angle. Furthermore, this method compares well with estimates of corrected voltage and results in a self-consistent picture of beam dynamics. Techniques are demonstrated using data from self-magnetic pinch experiments at the RITS-6 facility at Sandia National Laboratories.},
doi = {10.1063/1.5110413},
journal = {Review of Scientific Instruments},
number = 11,
volume = 90,
place = {United States},
year = {2019},
month = {11}
}
Works referenced in this record:
Overview of Self-Magnetically Pinched-Diode Investigations on RITS-6
journal, October 2010
- Hahn, Kelly D.; Bruner, Nichelle; Johnston, Mark D.
- IEEE Transactions on Plasma Science, Vol. 38, Issue 10
Relativistic Brillouin flow in the high ν/γ diode
journal, July 1975
- Creedon, John M.
- Journal of Applied Physics, Vol. 46, Issue 7
Thick-Target X-Ray Production in the Range from 1250 to 2350 Kilovolts
journal, November 1948
- Buechner, W. W.; Van de Graaff, R. J.; Burrill, E. A.
- Physical Review, Vol. 74, Issue 10
Critical Current Operation of the Optimized Self-Magnetic-Pinch Radiographic Diode
journal, September 2013
- Martin, Philip N.; Threadgold, James R.; Vickers, Simon
- IEEE Transactions on Plasma Science, Vol. 41, Issue 9
The Integrated TIGER Series (ITS) of Coupled Electron/Photon Monte Carlo Transport Codes
journal, February 1986
- Halbleib, J. A.; Mehlhorn, T. A.
- Nuclear Science and Engineering, Vol. 92, Issue 2
Electron-photon Monte Carlo calculations: The ETRAN code
journal, January 1991
- Seltzer, Stephen M.
- International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes, Vol. 42, Issue 10
A simple theory of magnetic insulation from basic physical considerations
journal, August 1983
- Mendel, C. W.; Seidel, D. B.; Rosenthal, S. E.
- Laser and Particle Beams, Vol. 1, Issue 3
Voltage and current measurements on high power self‐magnetically insulated vacuum transmission lines
journal, December 1984
- Maenchen, J.; Sheldon, H. T.; Rondeau, G. D.
- Review of Scientific Instruments, Vol. 55, Issue 12
Method for improved voltage determination for pulsed power systems utilizing a magnetically insulated transmission line
journal, February 2019
- Ottinger, P. F.; Renk, T. J.; Schumer, J. W.
- Physics of Plasmas, Vol. 26, Issue 2
Rescaling of equilibrium magnetically insulated flow theory based on results from particle-in-cell simulations
journal, June 2006
- Ottinger, P. F.; Schumer, J. W.
- Physics of Plasmas, Vol. 13, Issue 6
High-Power Self-Pinch Diode Experiments for Radiographic Applications
journal, June 2007
- Hinshelwood, David D.; Allen, Raymond J.; Commisso, Robert J.
- IEEE Transactions on Plasma Science, Vol. 35, Issue 3
Bremsstrahlung Cross-Section Formulas and Related Data
journal, October 1959
- Koch, H. W.; Motz, J. W.
- Reviews of Modern Physics, Vol. 31, Issue 4
Characterization of a self-magnetic-pinched diode
journal, April 2005
- Hinshelwood, D.; Cooperstein, G.; Mosher, D.
- IEEE Transactions on Plasma Science, Vol. 33, Issue 2
Integrated simulation of the generation and transport of proton beams from laser-target interaction
journal, June 2006
- Welch, D. R.; Rose, D. V.; Cuneo, M. E.
- Physics of Plasmas, Vol. 13, Issue 6
Propagation of power pulses in magnetically insulated vacuum transmission lines
journal, May 1979
- Di Capua, Marco S.; Pellinen, Donald G.
- Journal of Applied Physics, Vol. 50, Issue 5
A general theory of magnetically insulated electron flow
journal, January 1983
- Mendel, C. W.
- Physics of Fluids, Vol. 26, Issue 12
Bremsstrahlung spectra from electron interactions with screened atomic nuclei and orbital electrons
journal, August 1985
- Seltzer, Stephen M.; Berger, Martin J.
- Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 12, Issue 1