Known bugs and fixes for GPT
version 2.7
02-Apr-07: Setting the radius of macro particles, for example with the
setrmacrodist keyword, works for every value except zero. If a
radius of zero is specified, or if no value is specified, the code
switches to the undocumented default value of 1 micron. Please click
here for details.
16-Jun-06: Custom elements in GPT 2.71 rely on the Microsoft Visual C++ Toolkit 2003.
Unfortunately the free download at the
Microsoft website has been replaced with a more recent version that is
incompatible with this version of GPT.
12-Aug-05: Under some conditions related to starting particles as function
of time, the screen element erroneously displays the following
warning:
gpt: N Particle(s) started behind screen x. Particles are
ignored
If this message appears, it is likely that particles that should be
recorded in the output file are omitted. An update and installation
instructions can be downloaded here.
11-May-05: The documentation of the setfile element is incomplete.
An optional temporal distribution can be specified by adding a column
named "t" to the list of particle coordinates. This optional t column
sets the particle release time in seconds.
03-Jan-05: The documentation of the parameter list of map1D_TM
is incorrect. The correct syntax is:
map1D_TM(ECS,filename,z,Ez,fac,phi,w) ;
02-Nov-04: The ECS specification in the documentation of setcurvature
is incorrect. The ECS should not be specified because this element expects
the cathode surface to be located at the z=0 plane. The correct parameter list is:
setcurvature(set, Ra, Rc, Lc) ;
Note: The 'settransform' element can be used to move the cathode surface.
New elements and
features for GPT
version 2.7
16-June-06: Thanks to Bruno Muratori from Daresbury Laboratory two new
elements are available, sectormagnet and rectmagnet, that
model magnets with computationally fast fringe fields. They are
available for download here.
12-June-06: A new element has been developed that sets the xy-projection
of the initial particle distribution based on a grayscale bitmap image. It
is available for download here.
