Re: [Brahms-dev-l] updates to DC tracking code.

From: flemming videbaek <videbaek@rcf.rhic.bnl.gov>
Date: Sun Mar 21 2004 - 21:55:55 EST
Dear Pawel,
I red the e-log, but it is actually not clear what the 1-D2 problem is.
Assuming as you say it is a cabling problem it must have been present
in eons i.e. even the dAu- run. Certainly I am not aware of changes beeing
made since. Could you make both the problem as well as the
remedy more clear. For the un-informed reader the e-log is not detailled
enough ?

Thanks
    Flemming
----------------------------------------------------------------
Flemming Videbaek
Physics Department
Brookhaven National Laboratory

e-mail: videbaek@bnl.gov
phone: 631-344-4106
----- Original Message ----- 
From: "Pawel Staszel" <ufstasze@if.uj.edu.pl>
To: <brahms-dev-l@lists.bnl.gov>
Sent: Sunday, March 21, 2004 11:12 AM
Subject: [Brahms-dev-l] updates to DC tracking code.


> Dear Collaborators,
> I've committed the changes to the DC tracking code, namely
> to BrDCClusterFinder{h,cxx} and to BrDCViewCombiner.cxx.
> The changes where introduced to let T3 run with CheckSingleHits
> option enabled with a reasonable cpu time consumption.
> For this purpose I replaced SelectDCHits method with GetSelectedDCHits
> inline function.
> It is used when CheckSingleHits option is enabled.
> The second method is much
> faster as it just pickup the selected hits from DCClusterFinder module.
> This change increases the speed of T3 AuAu at 4 deg. by factor
> of ~8. Now, the CheckSingleHits option is enabled by default for
> all of the DCs. I also checked that enabling CheckSingleHits option
> increases the number of T3_T4 matched tracks by 10% for trig. 2 events.
>
> I need to commit the another changes to BrRawDataInput.cxx to handle
> the D1-D2 cable replacement (see e-log form 20March 8:00->16:00).
> However, I can't do this as long as the cabling in not corrected
> (don't know the affected run # range).
>
> Best regards
> Pawel.
>
>
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>


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Received on Sun Mar 21 21:50:25 2004

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