Midas DAQ System
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04 Dec 2009
Custom page showing ROOT analyzer output
Many midas experiments work with ROOT based analyzers today. One problem there is that the graphical output of the root analyzer can only be seen through the X server and not through the web. At the MEG experiment, we solved this problem in an elegant way: The ROOT analyzer runs in the background, using a "virtual" X server called Xvfb. It plots its output (several panels) normally using this X server, then saves this panels every ten seconds into GIF files. These GIF files are then served through mhttpd using a custom page. The output looks like this:
The used custom page file is attached. For details using Xvfb server, please contact Ryu Sawada <email@example.com>.