From: Djamel Ouerdane (ouerdane@nbi.dk)
Date: Wed Feb 12 2003 - 15:27:12 EST
> I have a couple of questions about this... > 1) is this true of any other settings? In particular, what about > higher p and larger angles? yes, same behaviour (all settings I could check are affected). > 2) If this were what you call 'fast multicharge particles' why is this > a continuos band, and not a blob at deltaE=4,9,etc? it was a question. I don't know yet. For what I know, there is some non linearity that I could deduce from the multiple matchings (more than one track matched with a TOF hit), the dE peak is positioned at 1.7 instead of 2. But this is maybe not so reliable > 3)What fraction of the data around beta~1 has deltaE>2? around 5% at 4 deg (might be setting dependent). > 4)What does this plot look like slat by slat? i.e. which slats have > the line which has beta>1 and which slats have beta<1? there's no slat dependence, all of them shows this stuff individually That's why I suspect it's the slewing correction. This calibration provides a set of parameters for each top and bottom tubes. If they're not good, you can get this behaviour. What I will do to make sure is to make the same plots but with dE_top OR dE_bot and NOT the geometrical average. > Is it split in odd and even slats (and thus related to the path > length?). > no more later. Djam
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