Re: [Brahms-dev-l] Drift velocity calibrations

From: Flemming Videbaek <videbaek_at_bnl.gov>
Date: Sun, 4 Mar 2007 18:03:11 -0500
Hi
I have update the production code for brat,
which included removing the two calibration files mentioned by Steve and Selemon.

Flemming

--------------------------------------------
Flemming Videbaek
Physics Department 
Bldg 510-D
Brookhaven National Laboratory
Upton, NY11973

phone: 631-344-4106
cell:       631-681-1596
fax:        631-344-1334
e-mail: videbaek @ bnl gov
----- Original Message ----- 
From: "Stephen Sanders" <ssanders_at_ku.edu>
To: "Flemming Videbaek" <videbaek_at_bnl.gov>
Cc: "Bekele, Selemon" <bekeleku_at_ku.edu>; <brahms-dev-l_at_lists.bnl.gov>
Sent: Sunday, March 04, 2007 3:57 PM
Subject: Re: [Brahms-dev-l] Drift velocity calibrations


> Hi:  The miscreant files have been removed.  ...steve
> On Mar 3, 2007, at 5:03 PM, Flemming Videbaek wrote:
> 
>> Hi selemon,
>>
>> sounds good - I can certainly rebuild but
>> what does it mean they are bad.
>> Stve can you clean up cvs , and I will rebuild.
>> (too bad we never got this in the DB)
>>
>> Flemming
>>
>> --------------------------------------------
>> Flemming Videbaek
>> Physics Department
>> Bldg 510-D
>> Brookhaven National Laboratory
>> Upton, NY11973
>>
>> phone: 631-344-4106
>> cell:       631-681-1596
>> fax:        631-344-1334
>> e-mail: videbaek @ bnl gov
>> ----- Original Message -----
>> From: "Bekele, Selemon" <bekeleku_at_ku.edu>
>> To: "Flemming Videbaek" <videbaek_at_bnl.gov>; <brahms-dev- 
>> l_at_lists.bnl.gov>
>> Sent: Saturday, March 03, 2007 5:28 PM
>> Subject: RE: [Brahms-dev-l] Drift velocity calibrations
>>
>>
>>
>> Hi Flemming, Steve
>>
>>     you are right, the problem was the bad drift velocity picked up
>> from the database. Your suggestion solved the problem, I managed to
>> calibrate all the runs. I need to have the following files to be
>> removed and brat rebuilt again so that I can finish with the
>> calibrations and go on to make the ltr files:
>>
>> /opt/brahms/new/share/brat/params/mult/BrCalibrMult_12682.dat
>> /opt/brahms/new/share/brat/params/mult/BrCalibrMult_13414.dat
>>
>> These files seem to be corrupted.
>>
>> Selemon,
>>
>> -----Original Message-----
>> From: Flemming Videbaek [mailto:videbaek_at_bnl.gov]
>> Sent: Sat 3/3/2007 2:13 PM
>> To: Bekele, Selemon; brahms-dev-l_at_lists.bnl.gov
>> Subject: Re: [Brahms-dev-l] Drift velocity calibrations
>>
>> Hi Selemon,
>>
>> The problem is the Vdrift is still read from the Database so it has  
>> a bad values.
>> The way to fix this, and in fact the calibrateFibDrift.C script  
>> should have this set-
>> but in former times we never tried to calibrate runs with BAD  
>> entries in the DB
>> (again the quality issue that someone commited BAD calibration,  
>> rather than just leaving them alone !)
>> In the script should should add
>> tpcCalModule->SetUseDriftVelocity(kFALSE) ;
>> then the module read the default parameter valut of 0.016 for  
>> vdrift from the acsii file, and I strongly suspect this will
>> work
>>
>> --------------------------------------------
>> Flemming Videbaek
>> Physics Department
>> Bldg 510-D
>> Brookhaven National Laboratory
>> Upton, NY11973
>>
>> phone: 631-344-4106
>> cell:       631-681-1596
>> fax:        631-344-1334
>> e-mail: videbaek @ bnl gov
>> ----- Original Message -----
>> From: "Bekele, Selemon" <bekeleku_at_ku.edu>
>> To: <brahms-dev-l_at_lists.bnl.gov>
>> Sent: Saturday, March 03, 2007 1:38 PM
>> Subject: [Brahms-dev-l] Drift velocity calibrations
>>
>>
>>>
>>> Hi,
>>>
>>>  I made plots of the x and y position distributions for T1 hits.  
>>> The x
>>> distributions are OK but the y distributions are empty which was  
>>> the reason
>>> to do the calibration with the T2 fibers. I was getting empty adc  
>>> distributions
>>> for the T2 fibers.
>>>  Then, I run the calibration for T2 and found that the adc  
>>> distributions are OK.
>>> Then I checked  BrTpcDriftFibCalModule to see where thingis go  
>>> wrong and
>>> found that the  track tables for the runs are empty for T1. The  
>>> adc distribution
>>> are filled only if there tracks.
>>>
>>> I have updated (added some more plots) the material I posted on  
>>> the agenda page for last friday.
>>>
>>> Selemon,
>>> _______________________________________________
>>> Brahms-dev-l mailing list
>>> Brahms-dev-l_at_lists.bnl.gov
>>> http://lists.bnl.gov/mailman/listinfo/brahms-dev-l
>>>
>>
>>
>> _______________________________________________
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>
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Received on Sun Mar 04 2007 - 18:08:29 EST

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