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

Dear Flemming,
If you look at the DC plots from supermon it is clear
that T4-1-X1, channels 8->23 are placed with T4-1-U1 channels 12->27.
The same we have for X2 and U2. The simplest explanation for that is that
max. board -> fb3 cables denoted as D1 and D2 have been replaced.
This mis-mapping is since
run # 10162. The previous run 10062 has the mentioned section of X1 and X2
dead, so my guess is that it happened when (Bob?) was playing with
the broken fuses on the max. board.

We don't loose anything because of that, just our software will
look more mysteriously.

Cheers
Pawel.

> 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.
>>
>>
>> _______________________________________________
>> Brahms-dev-l mailing list
>> Brahms-dev-l@lists.bnl.gov
>> http://lists.bnl.gov/mailman/listinfo/brahms-dev-l




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