Risetime sharpening using magnetic insulation in the aurora diode

Author

Miller, R.B. ; McCullough, W.F. ; Merkel, G. ; Litz, M. ; Roberts, H. ; Smith, M. ; Still, G.W.

Volume

40

Issue

6

fYear

1993

fDate

12/1/1993 12:00:00 AM

Firstpage

1426

Lastpage

1433

Abstract

Theoretical calculations indicate that Aurora diode geometrical reconfigurations that delay the onset of magnetic insulation should yield a decreased risetime. It is found that the use of anode falsework in the Aurora diode can easily decrease the nominal risetime of the beam current pulse from 50 ns to around 20 ns. The best results were achieved with Marx charge voltages in excess of 90 kV, using a 15-in A-K gap and a 10-in cathode-anode falsework overlap. Due to voltage ripples associated with impedance mismatches in the Aurora pulser, the limit of risetime improvements using the simple anode falsework approach has probably been reached

Keywords

X-ray production; bremsstrahlung; electron accelerators; insulation; plasma diodes; relativistic electron beam tubes; relativistic plasmas; 50 to 20 ns; 90 kV; Aurora pulser; MAGIC trajectory plots; Marx charge voltages; anode falsework; aurora diode; bremsstrahlung; flash X-ray machine; impedance mismatches; magnetic insulation; magnetically insulated transmission line; risetime sharpening; voltage ripples; Anodes; Coaxial components; Diodes; Electrons; Geometry; Insulation; Laboratories; Pulse measurements; Shape measurement; Voltage;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.273522

Filename

273522