Data Analysis

Data creation:

Data are created by Alberto's software -> GUFI with the following format:

- A folder labelled "RUN_$runNumber"

- Inside there are three kind of file: logbook of the run, logbook of the acquisition and a file for each enabled ROC

-Format of the logbook ??

-Format of the data ??

The data are saved on the acquisition computer.

For each folder in /home/cgemlab2/data then a copy is created on srv-lab

In srv-lab the data are stored in /home/ihep_data/data

In the data folder there are several sub-folders for each step:

raw_dat -> output from ROC

raw_root -> decoded data in two steps: event.root and ana.root

Data analysis:

The data are threated in two step:

1- Wenlong code, renamed "TIGER Event Reconstruction" that convert the data collected by each ROC to a root file

2- GRAAL to digitize and clusterize the hit from each channel/strip and then performe the tracking

TIGER Event Reconstruction

The creation of the root file follow several steps:

1- [Script in python] Deconding the data from the ROC and it extract the variables into a root file: ecoarse, efine, tcoarse, tfine, strip ID, chip ID, FEB ID, ROC ID, frameword, altro?

2- Unify the root files from each ROC

3- [ana.C] Calibrate charge and time as a function of the FEB/channel

4- [event.C] Sort the entries as a function of the time, measure the trigger time and create the event

GRAAL

The reconstruction and the analysis in GRAAL is divided in three steps:

1- [$graal/src/rec] Prenalysis on the hits and clusterization

2- [$graal/src/evt] Tracking and good cluster selection

3- [$graal/src/ana] Generation of the PDF with the informations of charge, time and occupancy as a function of the FEB