Re: [Brahms-dev-l] TD1 calibration in DB

From: Hironori Ito <hito@rcf.rhic.bnl.gov>
Date: Thu Nov 20 2003 - 09:49:35 EST
Hello.  I thought I remind everyone that timings for dAu and pp are 
different by about 8ns (due to an addition of 8ns cable to start time).  
Therefore, even if you calibrate the last run of dAu, you MUST also 
calibrate the first run of pp (for at least time offset). 

Hiro

Bjorn H Samset wrote:

>Hi all.
>
>As promised eariler, I've looked at the TD1 calibrations for 2003 data. It
>seems that I was overly negative - only the start of useful dAu runs had
>bad calibrations, while from 8485 and on the calibs from march seem OK.
>I've therefore committed ADC gain, time offsets and delta delay calibs for
>tun 8307 (the latter was indeed needed...)
>
>I'm running the global tracking and dsts for the affected runs now, but a
>prelim reco of run 8307 at least looks fine (also, the double-band in H1
>PID is gone as hoped).
>
>So - with that I think we're ready for some new H1/H2 calibs where needed
>:-)
>
>--
>Bjorn H. Samset                           Phone: 22856465/92051998
>PhD student, heavy ion physics            Adr:   Schouterrassen 6
>Inst. of Physics, University of Oslo             0573 Oslo
>                              \|/
>----------------------------> -*- <-----------------------------
>                              /|\
>
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>  
>



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Received on Thu Nov 20 09:50:34 2003

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