ATC: ATLAS Center at ANL

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====== Single particle studies ======

The results shown on this page use [[https://atlaswww.hep.anl.gov/asc/jas4pp/|Jas4pp]] data-analysis package.

<hidden Click here to show how to install it>
<code bash>
wget http://atlaswww.hep.anl.gov/asc/jas4pp/download/current.php -O jas4pp.tgz
tar -zvxf jas4pp.tgz
cd jas4pp
source ./setup.sh # takes 5 sec for first-time optimization
</code>
</hidden>
===== Single particles with the SiFCC detector =====


You can study this the  geometry of FCChh-v7 detector using [[http://atlaswww.hep.anl.gov/hepsim/soft/detectors/sifcch7/sifcch7.html|sifcch7 link]]. This geometry corresponds to [[http://atlaswww.hep.anl.gov/hepsim/list.php?find=rfull009|rfull009 tag]] SLCIO  files.

We will download samples in directories **dataNgev** using reg. expressions. We will use 2 threads and 100 files (if available) from each sample.
<code bash>
hs-get pgun_pi_1to10000gev%rfull009 data1gev 2 100 pi1gev         # 1 GeV sample
hs-get pgun_pi_1to10000gev%rfull009 data10gev 2 100 pi10gev       # 10 GeV sample
hs-get pgun_pi_1to10000gev%rfull009 data100gev 2 100 pi100gev     # 100 GeV sample
hs-get pgun_pi_1to10000gev%rfull009 data1000gev 2 100 pi1000gev   # 1000 GeV sample
hs-get pgun_pi_1to10000gev%rfull009 data10000gev 2 100 pi10000gev # 10000 GeV sample
</code>

Run a Python script given here: {{:fcs:fcchh:pgun1.py|}}. To process these samples, run this sequence. Each script creates a PDF file with the image.

<code bash>
fpad pgun1.py data1gev
fpad pgun1.py data10gev
fpad pgun1.py data100gev
fpad pgun1.py data1000gev
fpad pgun1.py data10000gev
</code>

A typical plot for 100 GeV single pion is shown here 
<hidden Click to show this image>
{{:fcs:fcchh:pgun100gev.png?400|}}
</hidden>

Find more single particle samples using the tag [[http://atlaswww.hep.anl.gov/hepsim/list.php?find=rfull009|rfull009]].
Go to "Info" and find the links under "Reconstruction".

How to analyze LCIO data using C++ code is discussed in [[fcs:fcchh:intro|here]].