STAR-SSD-Software

Simulation RowData HitReco Tracking StarComputing OldPage		STAR SSD	- SOFTWARE

This page contains usefull information related to the SSD software.

Informations

Who is working on what

For the SSD software coordinator, please consult the S&C organization page.
Christelle Roy has developped the StiSsd code
Joerg Reinarth is working on the alignment of the SSD using real data in ITTF
Jonathan Bouchet is working on the hit reconstruction.
Jerome Baudot is working on the Online and QA.
Lilian Martin is a beta-tester.

A list of problems/errors related to the SSD software is tentatively maintained here.

Some pages on very specific informations :

How to submit a job with the scheduler.
How to extract SSD histos from the hist branch.

Simulations

SSD geometry in gstar

A page dedicated to the SSD simulations in gstar can be found here

SSD Simulation Maker

Empty at the moment...

Row data reading

The SSD row data are read from the daq files with the StSsdDaqMaker. This code is currently under review and will be soon accessible under cvs. This maker is using the StSSDReader and SSD_Reader classes developped by Herb Ward and accessible in StDaqMaker and StDaqLib.
This maker has two main goals :

to do the conversion from a (Daq-asic,FEE channel) ordering into a (ladder, silicon strip) ordering
fill an appropriate table depending on the type of data to read
- spa_strip table in the case of physics data
- ssdPedStrip table in the case of pedestal data

Hit reconstruction

The SSD hit reconstruction is done by the StSsdPointMaker accessible from the software guide. This maker takes the ouput table of the StSsdDaqMaker, do the cluster finding and cluster matching in the wafers. The hits found are then filled in a StSsdHitCollection of StEvent.

The star note 427 contains some documentations on it. Jonathan is publishing is latest plots here

Tracking

The SSD hits reconstructed are used in ITTF to build tracks in the STAR central region. A geometry specific to the SSD has been built in Sti for this purpose and stored in StiSsd. The tuning of the tracking in the SSD is just starting.

Histograms offline

This page gives an overview of the histograms that can be represented when running the bfc with the ssd option. Pedestal and physics features are explained.
OffLine plots

Officials Histograms offline

This page gives an overview of the histograms written in St_QA_Maker
OffLine plots

New pedestal & rms table

This page gives some explanation about the new pedestal & rms table used up to run 7
SSD Noise Table

Fast Simulator

This page gives some details about the Fast Simulator
SSD Fast Simulator

Tables

How to write tables in DB

Embedding procedure

Embedding with SSD : in construction

Macros

In this directory are some macros used for analysis, calibration.

read_ssdNoise.C : to read a ssdNoise.xxxxxx.root and produce a tuple with noise for strips (P and N sides) : macros
Write-table.C : modele to write a table used to fill the db with values (calibration) : macros
Fill-table.C : macro to create a ssdNoise.root table by setting your noise value : macros
scheduler.xml : a basic scheduler : macros
another information for using the bfc Chain and the Pointmaker : readme

Jonathan Bouchet

Simulation RowData HitReco Tracking StarComputing OldPage

STAR SSD

- SOFTWARE