Phobos  database  

• Data base on nighthawk

• Data base on abacus

• MDC1 data on rmds03

MC Event Generator

The chain of production of simulated data for the Phobos experiment starts with a Monte Carlo program that calculates properties of particles created in high energy nucleus-nucleus interactions. Currently HIJET program is used for this purpose. Hijet  output is written to an ASCII file with extension *.adat.

PMC Phobos detector simulation

The physics of particle detection using the Phobos detector is calculated with the help of a Phobos Monte Carlo (PMC) program. It is based on the CERN library program GEANT. AT present the popular format of the output of this (PMC) program is in the form of an ASCII file with extension *.aou, one may also meet extension *.apx if the NPIX program was used to calculate additional sections for pixelized hit positions.
 

PHAT convertion to ROOT files format

PHAT is a ROOT based Phobos program for data manipulations and analysis.
The *.aou and *.apx files are used as an input for a PHAT conversion macro called e.g. ConvApxToRoot.C. This macro converts ASCII *.aou or *.apx file to a  ROOT TFile with a series of PHAT TPhEvent objects, each of them storing pointers to (primarily) objects describing tracks (TPhTracks), hits (TPhHits) and hit arrays (TPhHitArrays).
This macro can be extended to convert data stored in hit arrays to a list of raw hits that are in the form that is expected to be received during the real experimental runs. Raw hits are stored in MCRawHitFECn0s container.
 

Mock Data Challange 1 raw data

Recently a set of data files was generated to supply Phobos raw data for the Mock Data Challange 1 (MDC1). The goal was to test the RHIC computing facilities as well as programs used for the reconstruction and analysis purpose. The files generated for MDC1 have only raw data container left.
 

Mock Data Challange 1 reconstructed data

Output of the reconstruction programs has been stored in the form of ROOT TTree objects. The reconstruction macro worked in two modes. With and without track reconstruction. In case when track reconstruction was perfromed the tree has additional information.
 

Pre - Mock Data Challange 2 - new (TPhHit and TPhTrack) style data

A set of data files with tracks and hits objects generated with a new class design.   These are old  HIJET MC data processed with a new PHAT release for MDC2. These data may be used to test programs used for the reconstruction and analysis purpose. The files have all the data container left.

Data base on nighthawk.chm.bnl.gov

• HIJET MC data
• 100 central Au-Au interactions
• other files:
• abacus at MIT

• Phobos Monte Carlo (PMC) outputs
• Data samples generated by K.Wozniak in April 1998
• First 50 central Au-Au interactions at vertex 0
• First 50 central Au-Au interactions at random vertices
• First 200 inclusive Au-Au interactions at vertex 0
• other files:
• abacus at MIT

• Data files in ROOT format
• events with full information in MCHits, MCTracks, HitArraysFromHits and  MCRawHitFECn0s  containers
• First 50 central events at vertex 0
• First 200 central events at random vertices
• First 200 inclusive events at vertex 0
• MDC1 version of events with only MCRawHitFECn0s container left
• First and second 5,000 central events at vertex 0
• First and second 5,000 central events at random vertices
• All 10,000 inclusive events at vertex 0
• First and second 5,000 inclusive events with an additional single particle embedded for track reconstruction tests
• MDC1 output files from the reconstruction programs
• First and second 5,000 central events at vertex 0
• First and second 5,000 central events at random vertices
• All 10,000 inclusive events at vertex 0
• First and second 5,000 inclusive events with an additional single particle embedded for track reconstruction tests
• pre-MDC2 test files with full information in MCHits, MCTracks, HitArraysFromHits and  MCRawHitFECn0s  containers. These files contain track and hit objects in a new class design.
  • First 50 central events at vertex 0
  • First 50 central events at random vertices
  • First 200 inclusive events at vertex 0

 

Data base on abacus.lns.mit.edu

On abacus at MIT Phobos simulated data are stored on hard disk:

• /data02/phobos/sim
• HIJET output for 2,000 central Au-Au events (@RHIC energy)
• HIJET output for 10,000 inclusive Au-Au events (@RHIC energy)
• /data02/phobos/sim/sim42
• small samples of PMC output files
• /data04/phobos/sim
• /data04/phobos/olszewsk/exports/mdc1
• raw data for MDC1:
• cv0_002.root cv0_003.root cvr_000.root cvr_001.root
• iv0_005.root
• cv0_50_all_containers.root cvr_200_all_containers.root iv0_200_all_containers.root
• events with a single particle of specific features
• singleparticle/1part_defluct.root
• singleparticle/1part_demsfluct.root
• singleparticle/1part_msfluct.root
• singleparticle/1part_nofluct.root
• combined single particles with inclusive events (in 5000 event samples)
• combined/1part_defluct_combined_1.root,     combined/1part_defluct_combined_2.root
• combined/1part_demsfluct_combined_1.root,    combined/1part_demsfluct_combined_2.root
• combined/1part_msfluct_combined_1.root,  combined/1part_msfluct_combined_2.root
• combined/1part_nofluct_combined_1.root,    combined/1part_nofluct_combined_2.root
• /data04/phobos/olszewsk/exports/pre-mdc2,
  test data with new hit and track class designs:
  • cv0_all_containers.root
  • cvr_all_containers.root
  • iv0_all_containers.root

 

or on DLT tapes:

• tape robot:
• data from tapes can be retrieved to hard disk in /data02/phobos and /data04/phobos areas.
• Description of the tape contents and examples of use can be found in /phobos/tapes directory. The tapes listed there are stored already in the robot and can be handled with "mtdc" command.

Data base of MDC1 data on rmds03 at BNL

On rmds03.rhic.bnl.gov data are stored in /disk0/phobos/mdc1 and /disk3/phobos/disk0/mdc1. You have to first login to rcf.rhic.bnl.gov and then to rmds03 to have a look at the data.