| |
The proton beam from the COMET cyclotron can be transported to three gantries and two horizontal lines. The beam energy is adjusted by a variable degrader. For each branch several "tunes" are defined, each listing the previously evaluated magnet, degrader and collimator settings for a certain beam energy. The beam quality at the end stations is routinely checked meticulously in the frame of treatment quality assurance. Independently of this, software has been developed (in the frame of the machine control system) to collect, for series of tunes, all available information on the beam and on the machine settings in the active beam line. Routinely used, this allows a close observation of the stability and reproducibility of the machine and keeps ready consistent data sets for detailed studies. This tool can also be used to collect, in a short space of time, extensive data for beam dynamics simulations with OPAL or optimisation procedures based thereon, to verify the beam line performance after changes to hardware or software, or to check the functionality of the beam diagnostics. The data set characterising a single tune is organised systematically, allowing to share data viewers with standard beam diagnostics.
|
|