Pitfalls:
The system matrix (overall transfer matrix of the full ion-optical system)
always contains an object lens which is used to describe a not upright phase
space ellipse, even when making the input in mode TX, TY.
Internally GICOSY always calculates in coordinates energy, time and tangens of
angle in symplectic coordinates. That means any direct assignment of matrix
coefficients - for example to specify the initial dispersion - has to be made in
these coordinates. However, for all output the coordinate system can be changed
by the command OC.
The variable L in calculation mode CM2 or CM3 means path length difference, but
in CM1 it is the time difference divided by the reference velocity.
Only for output of single element matrices (P A) the variable L really is the path
length difference also in CM1.
2016 Negative radius as input for dipole deflection direction now also works for CM3 -> V2.7
2016 Added MIRKO style plot with y envelop in upper half and y envelope in lower half of plot, with dispersion on x on top of both. -> V2.6
2009 Corrected variable assumed static which caused problems in phase space plots on some machines -> V2.5
2008 Corrected error in shift of reference trajectory in the floor coordinates for sector fields with rho<0 -> V2.4
2007 Corrected two bugs -> V2.3
The initial Twiss parameter alpha was to large by a factor of two in some
calculations
Dispersive matrix coefficients in mode momentum were wrong in expression plots.
Corrections in conversion to postscript (meta2ps).
The oldest reference to GICO is from November 1990, but the
name GICO was already protected several months earlier.
As a consequence also the names of
input/output files were changed.
P A, options B E
to write all element matrices to file for MOCADI.
SM and IM, option to write/read ASCII files
K E, a wedge degrader defined 1st. order transfer matrix
Added cards:
AC, acceleration column (has some higher order
chromatic bugs)
RM, rotation matrix for skewed elements and beam bending out of plane
DB, more options (3+4) for 3D phase space
SL, solenoid based on paper by Sakurai with correction by M. Yavor.
This page was last updated by Dr. Helmut Weick, 25^{th} May 2018,
contact h.weick(at)gsi.de,
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