Writing Test Data To ROOT Tree

LABELLING THE CONNECTORS ON THE BACK OF THE PULSER BOX:
Connectors are labelled in order of plane number they serve (i.e. the connector serving east side of plane 65 will be connector 1 on pulser box 2, west side of plane 100 will be connector 36 on pulser box 3); Connector 65 on a box is the SPARE, 66 is the LOW gain PIN and 67 is the HIGH gain PIN connector. (Also see LI mapping page.)
 

Writing Pulser Box test data to Root tree

On the Linux partition of the LI laptop, in the directory /home/root/boxes, there is a file Box.C which contains ROOT macros for writing the test data for a single pulser box to a tree.
 

• Make a new directory for the particular box e.g. /home/root/boxes/box2 (where the box number follows the OMC labelling)
• Copy the test data to this directory. Make sure the filename follows the naming convention described on the LabView page.
• Start root. (Just type root at the command prompt in the directory /home/root/boxes)
• Type ".L Box.C" to load in the macros, then type "BoxTreeMaker(supermodule,box);" where supermodule is 1 or 2 and box is the OMC pulser box number. This makes a tree with the data just for that pulser box.
• Then type "AddTree(box);" where box is OMC box number. This adds the test data for the box to another tree in the file /home/root/boxes/pulserboxes.root which contains all the data for all the tested boxes. When the macro is finished it will tell you to "move the file pulserboxes_new.root to pulserboxes.root". Check that the expected updates were made, then do this.

Other macros in the file Box.C are for making summary plots for a single box or selction of boxes. To make histograms:
 

• Type root at the command prompt in the directory /home/root/boxes and at the root prompt type ".L Box.C"
• To make a file containing histograms for a single box type "PlotMaker(box);" where box is the OMC box number. This writes a file called e.g. /home/root/boxes/box2/histos_box2.root
• To make a file containing histograms for a selection of boxes type "ConcatPlots(#boxes);" where #boxes is the number of boxes to include. The macro will then wait for you to input the box numbers wanted (press enter between each number). This will make the file /home/root/boxes/histos_boxes.root   (n.b. PlotMaker needs to be run on each of the boxes before ConcatPlots can be run)

Writing Fibre Bundle Test Data to Root Tree

The directory /home/root/plncables on the Linux partition of the LI laptop contains all the test data, as well as a file Fibre.C which contains some root macros. The file Fibres.root contains the tree with all the test data entered into it. To add measurements for a fibre bundle to this tree:
 

• Copy the fibre bundle test data to /home/root/plncables
• Type root in this directory, then type ".L Fibre.C"
• Type "Fibre(plane,side,supermodule,relbox,relcon);" where plane is just plane number, side is either "east" or "west" (need to include the ""), supermodule is 1 or 2, relbox is the OMC box number of the pulser box on which the fibre bundle was tested and relcon is the connector on that box that was used for testing (typically the spare connector will be used, so type 65. Otherwise see the numbering convention for connectors at the top of this page.)
• The macro will then ask you to "move Fibres_new.root to Fibres.root". Do this when you're happy that it worked.

If Fibres.root is ever written over accidently with a bad version of Fibres_new.root, the macro "MakeBasicTree();" does what it says and makes a new empty tree which will need to be re-filled for each fibre bundle using the method above.

Of course for anybody who knows root at all, the above is simple stuff so feel free to change anything if it'll make life easier.
 

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