Freebeam is software which will convert GDS format patterns into Raith EBPG pattern files (GPF).
Parameters for Freebeam, such as field size and beam step, are set with simple bash scripts. An example is provided as part of the installation.
The installation script included in the download works on an EBPG linux console computer. Instructions are included for manual installation on Ubuntu Linux.
Requires: Python3, Raith Beams library, gcc
Optional: Layout CAD python module. Click here to download Layout. This module is used for overlap removal.
Click here to download Freebeam to an EBPG console.
Move the tar file (.tgz) to /home/pg/bin and then unpack it:
mkdir /home/pg/bin # if necessary
mv /home/pg/Downloads/freebeam* /home/pg/bin/
cd /home/pg/bin
tar xvzf freebeam*.tgz
cd freebeam
su
./install.sh
Polygons can be generated for UPG systems, and trapezia can be generated for older GPG machines. On UPG systems, Raith’s “firebird” option will allow polygon patterns to run as fast as trapezoid (parallelogram) patterns. Without ‘firebird’, the shape overhead is higher.