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Seems like only one file was transmitted.<br>
Here the others.<br>
<br>
Stepan<br>
<br>
On 1/21/11 4:51 PM, Stepan Stepanyan wrote:
<blockquote cite="mid:4D39FFF7.4070000@jlab.org" type="cite">Dear
all,
<br>
<br>
In doing my studies with pass1 outputs I noticed couple of
problems (so far).
<br>
These could be problems of cooking, it is possible that I am not
using right
<br>
stuff for it. But never the less I want to see if any one has any
thoughts on these.
<br>
<br>
Firs problem I encountered is in cooking of file clas_061540.A14.
I run only 100K
<br>
and in Ntuple I got strange events at last 15%. In the attached
file r61540_14.ps
<br>
you will find thee graphs, showing event ID vs. momentum of the
first particle
<br>
in EVNT. As you can see at the end of 100K events I got tracks in
the first row of
<br>
EVNT with fixed momentum. It turns out most of them are positive
particles (see
<br>
second and third pages). Looking into output of user_ana, I can
see that massages
<br>
that tracking code prints out when number "ntr_link" exceeds max
value stopped
<br>
somewhere after 83293 events (attached file r61540_14.tiff). I
looked in the logbook
<br>
and seems like this run crushed at the end, but there are files
A15 and A16 of this
<br>
run and I do not know if we have seen problem with this files as
well.
<br>
<br>
Second problem I see is related with ICPB. Attached file
ic_hits.ps shows distribution
<br>
of relative energy of central crystal as a function of cluster
energy from ICPB and
<br>
ICHB. Clearly ICPB plot is wrong. Energy of clusters run above 7
GeV and central crystal
<br>
has more than 100% of cluster energy, impossible. Plot from ICHB
is normal, as one
<br>
would expect. Some thing is wrong in the transition from ICHB to
ICPB. Must be
<br>
corrected.
<br>
<br>
Finally I want to emphasize that looking into cooked data, running
simple analysis
<br>
are very important. We need to find and fix problems before pass1
cooking. Any
<br>
inputs on above issues will be appreciated.
<br>
<br>
Regards, Stepan
<br>
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