[Frost] The problem consideration of the trk_mon_lite

Sungkyun Park sp06k at fsu.edu
Wed Feb 23 15:49:47 EST 2011


Hi Franz,

Thank you about your comment.

I have selected two runs for test: run 63465.A01.B00 and run 62850.A05.B00

In run 63465.A01.B00,
when the number of events is 100,000,
the hbook-file with 482,702 Ntuple rows is made without any error massage.

In run 62850.A05.B00,
when the number of events is 64,000,
the hbook-file with 482,136 Ntuple rows is made without error.

I think the error is happened if the number of Ntuple rows is more than around 482,000.
All runs have the different number of events to have 482,000 Ntuple rows.

After my second iteration of DC calibration ( http://hadron.physics.fsu.edu/~skpark/DC_Cal_g9b/DC_Cal_feb1611.html ), mean-values of super-layer 1 and 2 was located at around -50. They have shifted down.
I though the reason would be that the CHI-SQ table has very huge values in super-layer 1 and 2.
I though if we might increase the number of events in hbook-file, large chi-sq values would be removed in the table.
You said dc3 has the event limit. I do not know how to improve the CHI-SQ values in super-lay 1 and 2.
Do you have any idea? or Do I have some misunderstanding now?

In g9a, mean values in super-layer 1 and 2 was improved very fast and only problem was happened in super-layer 4 and 5.  However,the condition of super-layer 5 and 6 in g9b is very good.

Sung
Florida State University

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