FOCUS Data Storage
FOCUS writes data into portable binary NeXus files. The scheme implemented
involves opening a new file for any run and updating this file at
predefined intervalls during counting operations. All this is commonly
handled automatically by the count
command. However, data file writing can be initiated and configured
manually from the command line through the following commands:
FOCUS has three detector banks which may not all be active at all
times. Thus a way is needed to tell SICS about the configuration of
the day. This is also done through ths storefocus command. There are
three parameters, upper, middle and lower which can be either on
(value greater 0) or off (value less then or equal to 0). The value
can be inquired with storefocus par. For example storefocus
middle prints the flag for the middle detector bank. With
storefocus par val a new value for the parameter is set. For
example storefocus lower 1 switches the lower detector bank
on. These commands are usually used in the configuration file and
require manager privilege.
- Write a new data file
- Updates the current data file.
- Creates NeXus links in the data file.
- focusupdate updateintervall
- prints the current update intervall to use during counting. Units
- focusupdate updateintervall newval
- Sets the update intervall to newval minutes.