[Brahms-dev-l] inel and mrsto calibrations

Hello.  Since not everyone seems to read email (hum... it sounds very 
familiar), I will restate how to use Inel and MrsT0 counters.

1.  Inel counters.
There are two modes: without slewing and with slewing.  You MUST use 
inel counter WITHOUT slewing in runs before 8300 because there was no 
ADCs.  (Well.  Actually, there were but cross talk problem in discr.)  
This gives you the vertex resolution of 11~18 cm.  For INEL with  
slewing, do the following, 

  BrInelVertexModule* inel = new BrInelVertexModule("Inel","Inel analysis");
  inel->SetCorrectTdc(kTRUE);
  inel->SetUseSqlOffset(kTRUE);
  inel->SetLeftLow(40.);
  inel->SetRightLow(40.);
  inel->SetLeftHigh(80);
  inel->SetRightHigh(80);
  inel->SetUseSlewing(kTRUE);
  appendContainer->AddModule(inel);

This should give you the vertex resolution of 5~7 cm.

2.  MRST0 counters
There is only one mode. Use Slewing.  Do the following after 
BrMrsTrackingModule since it now requires mrstrack.

  BrMrsT0RdoModule* mrst0rdo =
    new BrMrsT0RdoModule("MRST0","MRST0");
  mrst0rdo->SetUseSlewing(kFALSE);
  mrst0rdo->SetUseMinuitFit(kTRUE);
  mrst0rdo->SetTrackYOffset(0.75);
  appendContainer->AddModule(mrst0rdo);

Note:  It is very important to set reasonably right track-y offset.  
During dAu runs, it shifted from 0cm to about 0.75 cm.  Does someone 
looking at why this happened???  I thought the drift velocity is calibrated.


Hiro 


Flemming Videbaek wrote:

>Dear Claus,
>there should be calibrations for the early 90 eg run, afterall we used
>them as you said. The issue is
>the cal is done with the other method i.e timing offsets only and no slewing.
>I forgot the flag but hiro can tell. For the runs we used you and I went
>through all this, for other runs there can
>be an issue.The flag is not the default but set specifically for the
>adc-tc later runs.
>
>cheers
>    Flemming
>
>PS You do not have the scripts for the early production !?
>PPS. Any progress on the 80% deficit.
>
>PPS Hiro As before I cannot check the cal stuff from pii3 due to the firewall
>access now from Giessen/GSI. I guess we really should move the calibration
>check's to the rcf web server.
>
>----- Original Message -----
>From: "Claus O. E. Jorgensen" <ekman@nbi.dk>
>To: <hito@rcf.rhic.bnl.gov>
>Cc: "Flemming Videbæk" <videbaek@bnl.gov>
>Sent: Monday, November 17, 2003 12:01 PM
>Subject: inel calibrations for runs < 8307
>
>
>  
>



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