T1 vdrift for 12 A843 setting

From: Djamel Ouerdane (ouerdane@nbi.dk)
Date: Fri Nov 29 2002 - 08:04:17 EST

  • Next message: Djamel Ouerdane: "data reduction" 
    Hi,

As I said some time ago, runs 5581 to 5656 exhibit some weird matching in 
y between T1 and T2. I asked Pawel to recheck the vdrift calibration in 
the FFS for run 5605 (the worst case). I rereduce this run and applied the 
global tracking. The result can be found here :

http://www.nbi.dk/~ouerdane/cal/ffsDy5605.gif

T1 vdrift has been changed by 4.5 % !!
(Pawel has some plots for people who want to see them)

This is still not perfect (if the binning was finer, you would still see 
two peaks, this is due to a weird non constant vdrift...), but we can live 
with it. 

Djam


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Djamel Ouerdane ------------------------------------------o
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