Re: [Brahms-dev-l] cucu 62 bb cal

Hi,

I've started the process of the data reduction of the 62GeV CuCu data...
Run 13653 - 13922.
These have TPC calibs, BB calibs and DC calbs until run 13790. I guess
also that the RICH should be fine (unless the gass parameter needs to be
changed from run 12195)

So, deare experts, the next set of calibs should be the tofs and the
mults...

Just to let you know...

Cheers,
	Truls

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On Wed, 11 May 2005, flemming videbaek wrote:

> The change done for the Cu-Cu run is NOT a problem, but was a timing adjustment. The change in the
> tdc distribution just implies that the lvl0 time is set by another counter (liekly the RHIC clock). Since all times are relative this should not have changed any of the calibrations.
>
> This change in time is small and should not have changed the gains, by the way did it go up or down?
> Later during the pp runs the overall gate to BB and CC was changed since the overlap was not good for those settings.
>
>
> /fv
>
>
>   Hello,
>
>
>   I committed to DB calibrations for BBC for 62 GeV Cu+Cu run.
>
>   I had to changed the reference tubes for both left and right arrays, because otherwise I could not get a correct vertex distribution.
>
>   The main problem I could see so far: as Kris noticed in the e-log,
>
>
>   http://brahms-web.brahms.bnl.gov/cgi-bin/elog.pl?nb=2005&action=view&page=173
>
>
>   there is a typical change in the tdcs by ~50 channels. More than this, the adc gains seem also to have moved by ~50 channels. Changing the reference tubes provides a way to check...
>
>
>   So, if anybody is looking at these data - please write if you see any strange problems related to the vertex. For reference, the run numbers are: 13674, 13686, 13760, 13770, 13789, 13821.
>
>
>   Thank you!
>
>
>   Kind regards,
>
>   Catalin Ristea.
>
>
>   --
>
>   Catalin Ristea---------------------------------
>
>   High Energy and Heavy Ions Group
>
>   Niels Bohr Institute
>
>   Blegdamsvej 17, 2100 Copenhagen, Denmark
>
>   Tel (+45) 35 32 54 04 / Fax (+45) 35 32 50 16
>
>
>   E-mail: catalin.ristea@nbi.dk
>
>   http : www.nbi.dk/~ristea
>
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>
>
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