[Brahms-dev-l] effciencies and new brat tag

From: Pawel Staszel <ufstasze@if.uj.edu.pl>
Date: Wed May 24 2006 - 08:47:05 EDT
Hi,
Introduction:
the EfficiencyFinderModule is used on the event by event basis but
the gtr offsets script produces parameter files by merging usually two 
(sometimes more) sequences.
Up to now Efficiency Finder was using parameters calculated for the  two 
first sequences, and
I thought that it is OK. However digging in some other things I realized 
that these parameter can
differ significantly from sequence to sequence, e.g.
T2T3Offsets:
                          seq0_seq1                      
seq006_seq007_seq008_seq009
Dx      -0.102672 +/-  0.0703688                  -0.0967937 +/-  0.0779666
Dy       0.038688 +/-  0.139611                     0.036911   +/-  0.15073
Dax    -0.0001     +/- 0.000739                    -7.19848e-05   +/- 
0.000931802
Day     0.000243 +/- 0.000607                      0.00026091   +/- 
0.00101402

As you see deviations are quite large, in case of Day we have deviation 
in sigma on the level of 40%.
(You can find documentation of this effect on 
http://zefir.if.uj.edu.pl/staszel/brahms/fseffic/seqbyseq/index.html)

Because of that problem I updated EfficiencyCalculator (banapp) in the 
way that in can now update
gtr offsets on the sequence by sequence basis. It was not as trivial 
because our modules do not have
seq. by seq. functionality.

It required some changes to BrModuleMatchTrack, BrDcEnhancementModule and
BrT2T3OffetModule, mainly, I moved the section that reads offsets from 
Init to separate public
method ReadOffsets. Is is now called from the Init but also can be 
accessed from EfficiencyFinderModule.
The changes do not require modification of the official reconstruction 
scripts.
New brat tag is 2.35.2

Regards,
Pawel.



-- 
 ----------------------------------------------------------------------
| Pawel Staszel                                                        |
| Jagiellonian University                                              |
| Institute of Physics            email:      ufstasze@if.uj.edu.pl    |
| Reymonta 4                      phone:      (+48) 12 663 5712        |
| Krakow 30059                    FAX:        (+48) 12 633 7086        |
| Poland                                                               |
 ----------------------------------------------------------------------


_______________________________________________
Brahms-dev-l mailing list
Brahms-dev-l@lists.bnl.gov
http://lists.bnl.gov/mailman/listinfo/brahms-dev-l
Received on Wed May 24 08:47:53 2006

This archive was generated by hypermail 2.1.8 : Wed May 24 2006 - 08:48:06 EDT