D M <x-width [m]>
<y-width [m]> <steps> <start> <end> ;
A plot of x-envelope in the upper half and y-envelope
in lower half of the picture, in addition a dispersion curve for x.
x width = maximum size in x direction in m,
y width = maximum size in y direction in m,
steps = plot steps over the whole plot.
start = element no. to start plot
end = element no. to end plot
The start and end are counted over all valid input lines, not only over the optical elements, so you may try a bit.
Wedge Shaped Degrader
K E <(D,X) [1/m]>
<(D,G) > <(D,D) > ;
The degrader is described by its first order matrix
elements.
(D,D) = ratio of energy spread after and before the degrader
~ (E_in / E_out)
(D,G) = dependence of the relative energy deviation
on the relative mass deviation
(D,X) = dependence of the relative energy deviation
on the position X on the degrader
Wienfilter
W F < length > < radius [m] > < B-field [T] > < G0_B [m] > < G0_E [m] > < C_B > < C_E > < R_B > < R_E > ;
The electric field strength is calulated from the known magnetic and electric rigidity
of the reference ion and the electrostatic gap size.
The Wienfilter needn't deflect to zero degrees which is described by the radius, radius=0 means straight.
G0_B and G0_E specify the half gap size of the magnet and the electrostatic deflector, respectively.
The last 4 parameters seem to be for higher order components in the B and E fields.
Solenoid , (a solenoid without fringing fields
lacks all focusing properties!)
F F 0 <I1a>
<I1b> <I4a> <I5> <I6> ;
SOLENOID LENS <length [m]>
<B-field [T]> <radius [m]> ;
F F 0 <I1a>
<I1b> <I4a> <I5> <I6> ;
Rotation matrix by angle theta, longitudinal
shift with no optical effect or only aperture
ROTATION MATRIX <length [m]>
<theta [deg]> <radius [m]> ;
Electrostatic acceleration column
a homogenous field changing the energy of the
particles, (D,D) not equal 1
lens effect due to fringing fields
F F 0 <I1b> <I4a>
<I5> <I6> <I9> <I10> ;
ACCELERATION COLUMN <length
[m]> <longitudinal E-field MV/m> <radius [m]> ;
F F 0 <I1b> <I4a>
<I5> <I6> <I9> <I10> ;
additional option for (plot of trajectories)
DRAW BEAM <x-width[m]> <y-width
[m]> <no. of steps> <NX> <NA> <NG> <ND> <NY> <NB>
<option> ;
option = 1 --> trajectories
start only either in x- or y-plane, from a parallelogram-like phase
space volume
option = 2 --> trajectories
start in all combinations of x- and y-plane,
"
option = 3 --> trajectories
start only either in x- or y-plane, from an elliptical phase space
volume
option = 4 --> trajectories
start in all combinations of x- and y-plane,
"
additional option for (change name of default
output files)
SYSTEM FILE <Filename>
<identifier> ;
identifier = 'E'
name of export file for matrices, NEW!
identifier = 'F'
name of fit file
identifier = 'G' name
of grafic file
additional option for (print out all matrices
of every single element)
PRINT ALL
B E ;
writes all element matrices
except for drifts to file
additional option for (write system matrix to
file)
SAVE MATRIX <file name>
<identifier> ;
IMPORT MATRIX <file name>
<identifier> ;
identifier = 'A' write in
ASCII format to <file name>.ASC
Aperture slit to block ion trajectories in plots or ray files
APERTURE SLIT
<identifier > <x-wdith> <y-width>;
identifier = 'P' parallelogram = rect.
identifier = 'E' elliptical = round
This page was last updated by Helmut Weick, 21st Feb 2022,
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