Re: [Brahms-dev-l] T2-T3 matching

From: Djamel Ouerdane <ouerdane@nbi.dk>
Date: Tue Jun 15 2004 - 05:04:21 EDT
Hello,

The T2-T3 matching is _not_ done with H1 and should/will not be based on
any hodoscope stuff. I don't know what Pawel was referring to...now that I
think of it, I seem to remember that he needed the y position of the hits
(but don't ask me for what...).

Regarding a module for T2-T3 matching, it doesn't need to be 
BrModuleMatchTrack, it's in principle much simpler than that...unless you 
want to create a BrMatchedTrack T2-T3. I don't know what the best is right 
now. But where do we need that ? In BrFsTrackingModule that combines FFS 
and BFS. Does it really require a module or a method as it is now ? The 
main problem is again dealing with offsets and widths of matching 
parameters. This would be the only function of the module: accumulate stat 
for fitting histos and saving the info. BrModuleMatchTrack does much more 
than that so I would not use it for T2-T3. 

Djam

> I think this is because the matching is (and this is a VERY BAD idea, 
> IMHO) done based on H1 hits.
> Or at least it was.  I think that Flemming is right, we should have a 
> module which works just like BrModuleMatchTrack, but with no magnet.
> On the other hand:
> Is it possible to define a "fake" magnet which is just a plane in space 
> so that we could use the same module for matching?
> I guess it is a matter of copying the matching module, or making a 
> weird magnet volume, or there is something I haven't though of...
> 

-- 
Djamel Ouerdane ------------------------------------------o
|  Niels Bohr Institute      |  Home:                     |
|  Blegdamsvej 17, DK-2100 Ø |  Jagtvej 141 2D,           |
|  Fax: +45 35 32 50 16      |  DK-2200 Copenhagen N      |
|  Tel: +45 35 32 52 69      |  +45 35 86 19 74           |
|                  http://www.nbi.dk/~ouerdane            |
|                  ouerdane@nbi.dk                        |
o---------------------------------------------------------o


_______________________________________________
Brahms-dev-l mailing list
Brahms-dev-l@lists.bnl.gov
http://lists.bnl.gov/mailman/listinfo/brahms-dev-l
Received on Tue Jun 15 05:04:46 2004

This archive was generated by hypermail 2.1.8 : Tue Jun 15 2004 - 05:04:55 EDT