[Brahms-dev-l] new brat version 2.15.10 & vertex browser in brahms_app/DB_util

Hi all,

I've just committed some updates to the BB calibration scripts and vertex 
modules. 

* BB vertex:
The BB vertex modules deal with all tubes as a 4th method 
(cleaned up the hack introduced by Hiro or Flemming) and this method is 
the second best (after the small tube vertex). I also added a vertex 
calibration browser in brahms_app/DB_util: VtxDbBrowser. Works like the 
other ones.

* BB calibration:
Basically, I put an option in the BB calibration module to bypass the 
fitting routines in the Finish() methods. This option is false by default 
(= old behaviour). This option is useful if you use the new scripts in
<brat-tree>/scripts/calib/bb:

1st step
--------
there are a masterBBCal.sh and updated versions of Bb*.C's To start up a
data scan, you first have to pick up the *.sh script and put it into your
analysis directory, let's call it e.g. ~/bbcal

cd ~/bbcal

in ~/bbcal, you must do: 

mkdir adcgain deltatime slewing vtxoffset

cp <brat-install-tree>/share/scripts/calib/bb/BbAdcGain.C adcgain/
cp <brat-install-tree>/share/scripts/calib/bb/BbDeltaTime.C deltatime/
cp <brat-install-tree>/share/scripts/calib/bb/BbSlewing.C slewing/
cp <brat-install-tree>/share/scripts/calib/bb/BbVtxOffset.C vtxoffset/
(you must pick up the latest version, otherwise, you won't make them work 
properly)

then, now that you have everything ready:

./masterBBCal.sh -h 
(for some help)

./masterBBCal.sh -b 10251 -t adcgain
(for adcgain cal on run 10251)

./masterBBCal.sh -b 9930 -e 9980 -t deltatime
(for deltatime cal on runs between 9930 and 9980)

The script masteBBCal.sh will generate lsf scripts, launch jobs for each
sequence of each run from available farm nodes. At the end, the histogram
sequence files will be merged by an application called mergehistfile that
I put in brat/application/misc and that should be somewhere in your $PATH


then you will have the choice between transferring the final histogram 
file to another machine or keep it where it is.

2nd step
-------- 
you should collect all histogram files you have produced with
masterBBCal.sh (whatever the calibration type) in one spot. Let's call
this directory ~/bbcal/hists (but in the future this will be less messy).
You should keep the names of these files as they were set by the master
script, don't change the filenames for the following to work.


go to ~/bbcal/hists
cp <brat-install-tree>/share/scripts/calib/bb/bb*.C .
(I mean bb in small letters)

or alternatively, set your macro path in ~/.rootrc to point to the brat 
script dir.

Now do

bratroot -l bbCalibration.C

and follow instructions. This is very easy to use and I need adventurers 
to test the whole thing for bugs and imnprovements. If you make it work 
without any problem and want to commit something, make sure you havethe 
permission (your ~/.bratdbrc should be set up correctly, ask an expert - 
Flemming, Kris, maybe me I guess, if you can be allowed to commit stuff if 
you cannot already). 

---------------------
More doc will follow soon with window snapshots to illustrate the 
different steps. I can tell you that I'm able to process a lot of 
calibrations in a reasonable short time with full control on fitting, 
monitoring, etc. The only drawback is that the scripts are using the 
standard algorithms for peak finding, etc, but that's not so hard to 
change for experienced developers, the functions in the scripts are easy 
to debug and the whole stuff is highly "segmented" into small functions.


The TOF stuff will follow soon, when I make sure the official gtr script 
does what it's supposed to do.

As usual, if something goes wrong because of my changes, tell me asap!

Cheers!
Djam

PS: sorry for the long email :)

-- 
Djamel Ouerdane ------------------------------------------o
|  Niels Bohr Institute      |  Home:                     |
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|                  http://www.nbi.dk/~ouerdane            |
|                  ouerdane@nbi.dk                        |
o---------------------------------------------------------o


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