How to bypass the DIRC status in ORC
It can sometimes make sense to take (bad for physics) data while fixing a
problem on the DIRC. To do this, one has to bypass the DIRC status in ORC as
it does check that all subsystems in the partition are runnable before starting the run. The bypass has to be done from con03 (the pilot console where ORC is running).
Display of the ORC panel. To change the way the DIRC is included in the
partition, one has to click on the buttons in the marroon frame. They are
described below in the core text. Such operations must be done while ORC is
in standby mode.
This picture shows the status of the ORC while BaBar is taking data in its
nominal configuration (all subdetectors included).
There are three ways to change the DIRC configuration in the partition when
ORC is in standby mode.
- Clicking on the green button 'CONFIG_LOCKED' will bypass the DIRC runnable
in ORC. If the problem is not directly related to the front-end electronics,
this should work without problem.
- If the problem is on some front-end crates, events are likely to be damaged in this configuration. In that case, one should
- either remove the DIRC completely from the DAQ by clicking on 'in';
- or remove the problematic crate(s) by clicking on the corresponding buttons ('18', '19' and '20').
When the problem is fixed, do not forget to come back
immediately in the nominal DAQ configuration!
Last modified: Fri May 12 07:24:27 PDT 2006