Tpc space charge calculation tool

calibrations/tpc_calibration/fillGainMap/README.md

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+# TPC Gain & IBF maps generation macro.
+This macro is generating maps of Gain and IBF for the sPHENIX TPC.
+
+## Input.
+As an input the macro uses calibration measurements from Yele University for two modules IROC 35 & 38:
+- IROC 35
+
+<p float="left">
+  <img src="./Plots/h_map_anode_iroc_35.png" width="300" />
+  <img src="./Plots/h_map_measuredibf_iroc_35.png" width="300" /> 
+</p>
+
+- IROC 38
+
+<p float="left">
+  <img src="./Plots/h_map_anode_iroc_38.png" width="300" />
+  <img src="./Plots/h_map_measuredibf_iroc_38.png" width="300" /> 
+</p>
+
+## Output.
+The macro writes the file *./Files/IBF_Map.root* with the "fake" maps for sPHENIX TPC readout:
+<p float="left">
+  <img src="./Plots/h_map_modules_anode.png" width="250" />
+  <img src="./Plots/h_map_modules_measuredibf.png" width="250" /> 
+</p>
+
+## Running macro.
+
+- Setup local environment: ```source /opt/sphenix/core/bin/sphenix_setup.sh -n```
+- Run in the batch mode: ```./makeMap.py -b```