Characterizing the HERMES-III Extended Magnetically Insulated Transmission Line

Characterizing the HERMES-III Extended Magnetically Insulated Transmission Line

Modeling and simulation of the HERMES-III extended magnetically insulated transmission line (MITL) terminated by a diode with an annular cathode and a planar anode was performed with an electromagnetic particle-in-cell code, EMPIRE-PIC. Self-limited MITL theory was developed and implemented in order...

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Veröffentlicht in:IEEE transactions on plasma science 2023-06, Vol.51 (6), p.1-11
Hauptverfasser: Powell, Troy C., Cartwright, Keith L.
Format: Artikel
Sprache:eng
Schlagworte:
Anodes
Bremsstrahlung
Calibration
Cathodes
Current measurement
electron accelerators
electron beams
Geometry
Monitoring
pulsed power systems
Simulation
Surface impedance
Transmission lines
Transmission-line matrix
Waveforms
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Zusammenfassung:Modeling and simulation of the HERMES-III extended magnetically insulated transmission line (MITL) terminated by a diode with an annular cathode and a planar anode was performed with an electromagnetic particle-in-cell code, EMPIRE-PIC. Self-limited MITL theory was developed and implemented in order to model select shots in EMPIRE by allowing one to transform an experimental current trace into a voltage waveform that is input into EMPIRE. Simulating shots 11 132, 11 133, 11 134, 11 135, 11 136, and 11 146 in EMPIRE shows good agreement with experimental current traces at several locations along the MITL. New calibrations for the anode current shunts are proposed based on low-power shots fired into a short-circuited diode configuration (short-shots). The new calibrations show improved agreement with simulation results.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2023.3275876