STAR Database Entries Used in FTPC Reconstruction





   In the reconstruction of the FTPC tracks, the run time barometric pressure
   and FTPC gas temperatures are used to adjust the drift maps. This information,
   along with the other run time condition information, is collected and
   archived on sc3.starp.bnl.gov during the run by slow control. Each entry in 
   the slow control archiver has a timestamp. These timestamps are in local time,
   i.e.  BNL time = EST. 

        run time information used in the FTPC reconstruction:

           cu_tpc_gas_PT-B         - barometric pressure in STAR hall in mbar

           ftpc_hdlc:t_gas_1.D []  - FTPC West gas out temperature in degree C
           ftpc_hdlc:t_gas_2.D []  - FTPC East gas out temperature in degree C

    This information is transferred to the online database on onlsun1. In the 
    online database the slow control timestamps are saved in GMT.

     Slow Control            Conditions Database   Table           Field   Element

     cu_tpc_gas_PT-B         Conditions_tpc        tpcGas          PT_B

     ftpc_hdlc:t_gas_1.D []  Conditions_ftpc       ftpcHDLCTemps   gasOut   1 
     ftpc_hdlc:t_gas_2.D []  Conditions_ftpc       ftpcHDLCTemps   gasOut   2 

    The information is automatically transfered from the online database to the 
    offline database on robinson. The offline database timestamps are in GMT.
            
      Online         Calibrations Database     Table          Field

      PT_B           Calibrations_tpc          tpcGas         barometricPressure 

      gasOut[1]      Calibrations_ftpc         ftpcGasOut     gasOutWest

      gasOut[2]      Calibrations_ftpc         ftpcGasOut     gasOutEast


     Click here to see an example of the database values.

    

     This page was written by  Janet Seyboth  on January 30, 2003

     Last modified:  January 31, 2003 13:00 CET