[u/mrichter/AliRoot.git] / PWGLF / SPECTRA / IdentifiedHighPt / README.txt

The idea is to document the different steps needed to make spectra.

STEP 1: GRID CODE
=================

In the directory grid you will find the code used to produce the trees. For
info on how to use have a look at runAAF.C

STEP 2: EXTRACT TREES
=====================

The file produced on the grid contains the trees in the list. This means that
one cannot direcrtly chain tghem. Therefore we use the code in extract_code to
make new files with the trees only.

Example:
./merge.sh aortizve/Trees_LHC10b_Pass3/files/
and 
./merge.sh aortizve/Trees_LHC10b_Pass3/files/ HighPtDeDxV0

STEP 3: COMPILE LIBRARY
=======================

cd lib
make clean
make


STEP 4: DETERMINE RATIOS
========================

This is the biggest step.

mkdir ratios_7tevb
cd ratios_7tevb

First we need to create the text files we want to analyze.
Example:
find /home/pchristi/work/analysis/7tev/ | grep HighPtDeDx_Tree | grep new | grep 117059 > 7tev_b_test.dat
find /home/pchristi/work/analysis/7tev/ | grep HighPtDeDx_Tree | grep new > 7tev_b.dat

find /home/pchristi/work/analysis/7tev/ | grep HighPtDeDxV0_Tree | grep new | grep 117059 > 7tev_b_test_v0.dat
find /home/pchristi/work/analysis/7tev/ | grep HighPtDeDxV0_Tree | grep new > 7tev_b_v0.dat

ln -s ../macros/run_code.C .
ln -s ../macros/calibrate_de_dx.C .

cp ../macros/drawText.C .
Edit the text here. This macro is used to tag the pictures.

Follow the example in the macro run_code.C

Step 1-5 is about determining the dE/dx calibrations and the input data to the
fits in pT.

Now it is time for extracting the uncorrected ratios.

ln -s ../macros/fit_yields_final.C .

This is documented in fit_yields_final.C


There is still things missing:
- Option to generate tree when generating the data.
- The code to estimate systematic errors
- Efficiency code
- Corrected fractions
- Spectra and RAA code

But that will come soon - hopefully next week.


To zip:

ls -1 README.txt lib/Makefile lib/*.cxx lib/*.h macros/*.C > tozip.txt
tar -hcvzf analysis.tgz -T tozip.txt
Commit	Line	Data
4ebdd20e	1	The idea is to document the different steps needed to make spectra.
	2
	3	STEP 1: GRID CODE
	4	=================
	5
	6	In the directory grid you will find the code used to produce the trees. For
	7	info on how to use have a look at runAAF.C
	8
	9	STEP 2: EXTRACT TREES
	10	=====================
	11
	12	The file produced on the grid contains the trees in the list. This means that
	13	one cannot direcrtly chain tghem. Therefore we use the code in extract_code to
	14	make new files with the trees only.
	15
	16	Example:
	17	./merge.sh aortizve/Trees_LHC10b_Pass3/files/
	18	and
	19	./merge.sh aortizve/Trees_LHC10b_Pass3/files/ HighPtDeDxV0
	20
	21	STEP 3: COMPILE LIBRARY
	22	=======================
	23
	24	cd lib
	25	make clean
	26	make
	27
	28
	29	STEP 4: DETERMINE RATIOS
	30	========================
	31
	32	This is the biggest step.
	33
	34	mkdir ratios_7tevb
	35	cd ratios_7tevb
	36
	37	First we need to create the text files we want to analyze.
	38	Example:
	39	find /home/pchristi/work/analysis/7tev/ \| grep HighPtDeDx_Tree \| grep new \| grep 117059 > 7tev_b_test.dat
	40	find /home/pchristi/work/analysis/7tev/ \| grep HighPtDeDx_Tree \| grep new > 7tev_b.dat
	41
	42	find /home/pchristi/work/analysis/7tev/ \| grep HighPtDeDxV0_Tree \| grep new \| grep 117059 > 7tev_b_test_v0.dat
	43	find /home/pchristi/work/analysis/7tev/ \| grep HighPtDeDxV0_Tree \| grep new > 7tev_b_v0.dat
	44
	45	ln -s ../macros/run_code.C .
	46	ln -s ../macros/calibrate_de_dx.C .
	47
	48	cp ../macros/drawText.C .
	49	Edit the text here. This macro is used to tag the pictures.
	50
	51	Follow the example in the macro run_code.C
	52
	53	Step 1-5 is about determining the dE/dx calibrations and the input data to the
	54	fits in pT.
	55
	56	Now it is time for extracting the uncorrected ratios.
	57
	58	ln -s ../macros/fit_yields_final.C .
	59
	60	This is documented in fit_yields_final.C
	61
	62
	63	There is still things missing:
	64	- Option to generate tree when generating the data.
65	- The code to estimate systematic errors
66	- Efficiency code
67	- Corrected fractions
68	- Spectra and RAA code
69
70	But that will come soon - hopefully next week.
71
72
73
74
75	To zip:
76
77	ls -1 README.txt lib/Makefile lib/.cxx lib/.h macros/*.C > tozip.txt
78	tar -hcvzf analysis.tgz -T tozip.txt
79