Brick Model with 50264 switch
!
! Rick Spielman 2017-08-15
!
Time-step 1e-12
Resolution-time 1e-9
End-time 1.5e-6
Number-prints 5
Execute-cycles all
Grids no
Echo-setup no
Max-points 20001
!
!Start circuit definition
!
! Rev. 1 50264 is based on the Z15 rev 4 deck with L higher
!
! Rev 4 is the same as Rev 2 EXCEPT I will adjust the length of the switch arc channel 
! that is the simple way of adjusting the channel conductivity.
!
! We start with a capacitor and switch with the parameters based on the
! Thor II brick with the 80 nF version of the GA 35426M Capacitor 40 nF,
! 15 nH, start with a 0.13  ESR. We will use a total inductance of 200 nH for the brick
! that includes the inductance of the feeds leading to the load and the
! inductance of the load.
! 
! At this point we really do not know the time dependent ESR of the capacitor.
!
! We will use the Martin Switch model for the 50264 Switch
!
! The charge voltage will be 100 kV. This is the operating point for the SNL test brick.
!
!
BRANCH
!
! Capacitor capacitance and charge voltage
!
RCGround 1e+12 40.0e-9
Initial VC1 200e3
TXT VC1
$V_brick
TXT EC1
$E_brick
! Cap inductance, case & parasitic inductance, and ESR
!
RLSeries 0.13 55e-9
TXT ER2
$E_ESR
!
! Switch resistance - Martin Model and switch inductance - 0.6731 cm gap per side
! 90 psia air 
!
! Initial switch resistance was chosen to be higher than that printed in the first
! few time steps so as to appear monotonically decreasing in R plots
! A careful few runs sowed that 10 G looked best. In any event by 1 ns all of the 
! resistance values are the same.
!
RLSeries 10e9 60e-9
Var R2 Switch
!dielectric switchtime gap              pressure     nswitch nchannels
AIR           0.0               0.013462    6.0               1            1
TXT R2
$R_switch ()
TXT ER2
$E_switch (J)
TXT FCH
$Radius_switch (m)

!
! Output TL header inducatance
!
RLSeries 0.00 60.0e-9
!
! Load resistance = Rmatched
! L=200 nH, Rm=2.24, L=175nH, Rm=2.09
! L3 used 2.5  load
!
RCGround 2.5 0.0
TXT IR1
$I_brick
TXT QR1
$Q_brick
TXT VR1
$V_out
TXT PR1
$P_out
TXT ER1
$E_out
!
! End circuit
!