An arrangement is provided for improving the yield of potato crops. Certain embodiments provide a method for synchronizing a patient image with an atlas image. The index table provides keys used for accessing data in the first computing node and other multi-node data stores. Use of this technique permits burst mode operation in which the first discharge of a burst is a no-output discharge so that timing parameters for each of the two chambers can be monitored before the first laser output pulse of the burst. The method also includes receiving the data file from the client, storing the data file in a directory in the server file system, storing a path for the directory in the database, and outputting one of a success code and a failure code to the client.