Re: FINUDA data taking

To: Vincenzo Lucherini <Vincenzo.Lucherini@lnf.infn.it>
Subject: Re: FINUDA data taking
From: "Prof. Aldo Zenoni" <zenoni@fiaba1.ing.unibs.it>
Date: Thu, 30 Oct 2003 08:20:20 +0100 (CET)
cc: finudagroup@lnf.infn.it
In-Reply-To: <Pine.OSF.3.95a.1031029171121.15316A-100000@dxcalc.lnf.infn.it>


     Dear RUNCO, 
     concerning the FINUDA data takig strategy for the present run, 
     I would only like to stress the need to plan, during 
     periods of machine off, some dedicated data taking for cosmic rays
     with magnetic field on and, if possible, also with magnetic field 
     off. The data should be collected once stable conditions of the
     apparatus are reached (gas mixtures, voltages, etc).
   
     We need these data for calibration of the drift cells (chambers 
     and straws) with the magnetic field 1.0 T and for periodic monitoring 
     of detector alignement.

     The 500.000 cosmic ray data collected in July with .OR.tofino 
     .OR.tofone trigger with B on were already a good reference sample. 
      A larger one would be evidently more useful for applying geometric 
     and quality cuts to the events.

     Best regards, ciao  aldo


On Wed, 29 Oct 2003, Vincenzo Lucherini wrote:

> 
> FINUDA has practically reached, with the filling of He bag, the stage of
> systematic data taking. We still need to check definitively the
> DAFNE energy, that will be done before the next Monday shut-down.
> Hence, a part specific request for tuning or debugging, the trigger to
> routinely select (at least since when DAQ will not saturate) should be:
> 
> 			HYP.OR.BHABHA
> 
> In this mode we have faster accumulation of data for monitoring purpose,
> and are able also to provide the "on-line" FINUDA luminosity measurement.
> To avoid to much big data files, a request of 15.000 events per run seems
> appropriate, corresponding, with the current luminosities, to about
> almost three hours each.
> 
> 			The RUN
> 			       CO-ordinator
> 
> 			
> 

-- 
===============================================================================
Prof. Aldo Zenoni                        tel. +39 030 3715729      
Dipartimento di Meccanica                             3715798
Facolta' di Ingegneria                   fax. +39 030 3702448
Universita' di Brescia                   e-mail: zenoni@bs.infn.it
Via Valotti, 9
25123 BRESCIA
===============================================================================

References:

FINIDA data taking

From: Vincenzo Lucherini <Vincenzo.Lucherini@lnf.infn.it>

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