LTDR Model
!
!    The goals of the design are to:
!        Develop an LTD Model to study performance
!        and component stresses
!
!        11 April 2008
!
TIME-STEP          0.1E-9
RESOLUTION-TIME    1.0E-9
END-TIME           1.0E-6
NUMBER-PRINTS      1
EXECUTE-CYCLES     ALL
ECHO               YES
GRIDS              NO
MAX-POINTS         3001
DETAIL-PRINTS      FULL
!
!
BRANCH
!
!
!   *********   LTD module   *****************************************************
!
!    We begin with a model of 10 LTD cavity generator
!
!    We use for this calculation the RLC circuit model of an LTD system that was developed
!    by Mazarakis and colleagues.
!
!    We assume each LTD cavity has a capacitance of 16 nF X 12 bricks = 192 nF.
!
RCG	1.000E12    192.00E-9
!
!    We assume each cavity is charged to 100 kV.
!
INITIAL    VC1      100.0E3
!
!    We assume each cavity has a resistance of (0.03 Ohm + 0.03 ohms)/12 = 0.005 Ohms
!    We assume each cavity has an inductance of (20 nH + 15 nH + 13 nh)/12 = 4 nH.
!
RLS   0.005      4.0E-9
!
!    We assume each cavity has a core loss that can be modeled as a shunt resistance of
!    1.25 ohms.
!
RCG     1.25         1.0E-12
!
!
TRL LIN 2.0E-9  0.006447   0.006447
!
UFO VIN
$VTRIN2
UFO IIN
$ITRIN2
UFO PIN
$PTRIN2
UFO EIN
$ETRIN2
!
!
ADDER
!
TOPBRANCH
!
TRL LIN 2.0E-9   0.01289  0.01289              
!
UFO VIN
$VTRIN4
UFO IIN
$ITRIN4
UFO PIN
$PTRIN4
UFO EIN
$ETRIN4
!
!
ADDER
!
TOPBRANCH
!
TRL LIN 2.0E-9  0.01934  0.01934              
!
UFO VIN
$VTRIN6
UFO IIN
$ITRIN6
UFO PIN
$PTRIN6
UFO EIN
$ETRIN6
!
!
ADDER
!
TOPBRANCH
!
TRL LIN 2.0E-9  0.02579  0.02579              
!
UFO VIN
$VTRIN8
UFO IIN
$ITRIN8
UFO PIN
$PTRIN8
UFO EIN
$ETRIN8
!
!
ADDER
!
TOPBRANCH
!
TRL LIN 2.0E-9  0.03224  0.03224              
!
UFO VIN
$VTRIN10
UFO IIN
$ITRIN10
UFO PIN
$PTRIN10
UFO EIN
$ETRIN10
!
!
ADDER
!
TOPBRANCH
!
TRL LIN 2.0E-9  0.03868  0.03868             
!
UFO VIN
$VTRIN12
UFO IIN
$ITRIN12
UFO PIN
$PTRIN12
UFO EIN
$ETRIN12
!
!
ADDER
!
TOPBRANCH
!
TRL LIN 2.0E-9  0.04513  0.04513             
!
UFO VIN
$VTRIN14
UFO IIN
$ITRIN14
UFO PIN
$PTRIN14
UFO EIN
$ETRIN14
!
!
ADDER
!
TOPBRANCH
!
TRL LIN 2.0E-9  0.05158  0.05158             
!
UFO VIN
$VTRIN16
UFO IIN
$ITRIN16
UFO PIN
$PTRIN16
UFO EIN
$ETRIN16
!
!
ADDER
!
TOPBRANCH
!
TRL LIN 2.0E-9  0.05802  0.05802              
!
UFO VIN
$VTRIN18
UFO IIN
$ITRIN18
UFO PIN
$PTRIN18
UFO EIN
$ETRIN18
!
!
ADDER
!
TOPBRANCH
!
TRL LIN 2.0E-9  0.06447  0.06447              
!
UFO VIN
$VTRIN20
UFO IIN
$ITRIN20
UFO PIN
$PTRIN20
UFO EIN
$ETRIN20
!
!     MITL Extension
!
!
TRL EXP 10.0E-9  0.060  0.060
!
UFO VIN
$VTRIN
UFO IIN
$ITRIN
UFO PIN
$PTRIN
UFO EIN
$ETRIN
!
!
!
!  PFD Resistance
!
!
RCG     0.0001     1.00E-10
VARIABLE R1      POS-MODEL 
!  TSW   CURSW   TOPEN  ZFLOW  GSWMIN  GSWMAX  CBFLAG
   2E-9   1E2    2E-9   0.25   .0001     10000     0
!
!
!
!   ********   Tie it all back to ground   ***********************************
!
!
RCG  1.0E-12
!
! BRANCHES
!
BRANCH
!
!
RCG   0.128      1.0E-12
!
RLS     1E5       0.625E-9
!
VAR R2 DEC
1E5  0.00125   13.2E-9  1.00E-11
!
RCG  1.000E12       72.0E-6
!
INITIAL    VC1        -400.0E3
!
!
BRANCH
!
!
RCG   0.128      1.0E-12
!
RLS     1E5       0.625E-9
!
VAR R2 DEC
1E5  0.00125   26.4E-9  1.00E-11
!
RCG  1.000E12       72.0E-6
!
INITIAL    VC1        -400.0E3
!
!
BRANCH
!
!
RCG   0.128      1.0E-12
!
RLS     1E5       0.625E-9
!
VAR R2 DEC
1E5  0.00125   39.6E-9  1.00E-11
!
RCG  1.000E12       72.0E-6
!
INITIAL    VC1        -400.0E3
!
!
BRANCH
!
!
RCG   0.128      1.0E-12
!
RLS     1E5       0.625E-9
!
VAR R2 DEC
1E5  0.00125   52.8E-9  1.00E-11
!
RCG  1.000E12       72.0E-6
!
INITIAL    VC1        -400.0E3
!
!
BRANCH
!
!
RCG   0.128      1.0E-12
!
RLS     1E5       0.625E-9
!
VAR R2 DEC
1E5  0.00125   66.0E-9  1.00E-11
!
RCG  1.000E12       72.0E-6
!
INITIAL    VC1        -400.0E3
!
!
BRANCH
!
!
RCG   0.128      1.0E-12
!
RLS     1E5       0.625E-9
!
VAR R2 DEC
1E5  0.00125   79.2E-9  1.00E-11
!
RCG  1.000E12       72.0E-6
!
INITIAL    VC1        -400.0E3
!
!
BRANCH
!
!
RCG   0.128      1.0E-12
!
RLS     1E5       0.625E-9
!
VAR R2 DEC
1E5  0.00125   92.4E-9  1.00E-11
!
RCG  1.000E12       72.0E-6
!
INITIAL    VC1        -400.0E3
!
!
BRANCH
!
!
RCG   0.128      1.0E-12
!
RLS     1E5       0.625E-9
!
VAR R2 DEC
1E5  0.00125   105.6E-9  1.00E-11
!
RCG  1.000E12       72.0E-6
!
INITIAL    VC1        -400.0E3
!
!
BRANCH
!
!
RCG   0.128      1.0E-12
!
RLS     1E5       0.625E-9
!
VAR R2 DEC
1E5  0.00125   118.8E-9  1.00E-11
!
RCG  1.000E12       72.0E-6
!
INITIAL    VC1        -400.0E3
!
!
BRANCH
!
!
RCG   0.128      1.0E-12
!
RLS     1E5       0.625E-9
!
VAR R2 DEC
1E5  0.00125   132.0E-9  1.00E-11
!
RCG  1.000E12       72.0E-6
!
INITIAL    VC1        -400.0E3
!