h- analysis 2009 LT data at 31 GeV.Current status and plans.

Dimitar Kolev, University of Sofia,NA49/NA61 Collaboration Meeting

14-19 May 2012, Budapest

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Basic Information• Analysis software is developed by Luigi

Salvatore Esposito.• Originally all packages and accompanying

ROOT style scripts are committed on SVN.• All improvements introduced recently by us

have been also committed on SVN.• The software is in good working condition and

fully available to everybody for common usage, crosschecks, etc.

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Functional and Structural Overview - 1

• The input could by real and MC data of either DSPACK or ROOT type and crated by usual primary NA61 reconstruction productions .

• The most universal module t2klt provides wide range selection of data ready for analysis.

• Number of specialized modules (t2kLTposition, t2kLTvertex, etc.) developed as t2klt extensions allow fast and effective determination of some important topological parameters of tracks, vertexes in the target and surrounding detector units.

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Functional and Structural Overview - 2

• Special module provides MC corrections necessary for a h- analysis. So, to produce reliable h- analysis a MC production must be combined with an analyzed measured data.

• At present our group has almost finished with the data processing of the full 2009 data set.

• After getting the MC data we can immediately run the h- analysis procedure.

• Next some pictures illustrating our several auxiliary results will be shown

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Tracks propagated back to the RT area, default propagation step of 1 cm step

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Tracks propagated back to the RT area, propagation steps: 1 cm, 0.2 cm and 0.1 cm

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Vertexes in the target area

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Triggers – separate application

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Triggers, combined selection

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Beam parameters

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Conclusions and Acknowledgment

• The readiness for full power h- analysis within the present software framework is available.

• MC production is waited for in order to run the h- analysis .

• This work is done with the support of Bulgarian National Scientific Foundation, Grant No. DDVU 02/19/2010

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