From: Dana Beavis (Beavis@sgs1.hirg.bnl.gov)
Date: Thu Jan 30 2003 - 07:59:12 EST
There may be an additonal thing to consider. At what angle/ field settings should C1 be removed. I am sure that the material causes interactions and multiple scattering. A new set of extension bars were made for this years run which allows both C1 and the multiplicity array to be moved out/serviced at the same time. The same thought may occur for H1. dana ----- Original Message ----- From: "Ian Bearden" <bearden@nbi.dk> To: <brahms-l@bnl.gov> Sent: Thursday, January 30, 2003 2:34 AM Subject: C1 > I am sending this to the list to 'advertise' the usefulness of the > elog, and so that other people who are involved in this can see what > happened. We have had some problems with calibrating C1, but looking > on Wed. day entry in the elog I find a nice writeup with scope > pictures, explaining that the problems may come simply from the number > of particles in C1. The calibration was attempted using data with the > FFS trigger (trigger 6), but in such events there are (evidently) too > many pions in C1. We will try to look for the 1 p.e. in min bias > events. > So, thanks to Ramiro for clearing this up. > And thanks to Hiro for providing the wonderful elog. Now if we could > just pry that paper log book out of Flemming's hands, all would be > well:-) > Cheers, > Ian >
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