From: Flemming Videbaek (videbaek@sgs1.hirg.bnl.gov)
Date: Tue Feb 04 2003 - 10:54:35 EST
Hi Ian, Triggers are tallied of course only for runs with chambers on except for the 1/4 field runs at 8 deg where T1 was off for abpout a day. Since the mean p in these runs ar ~22/4 =6 geV/c the BFS +T2 does in fact provide info information to have these runs useful. As a historical reminder - the FS was in fact designed with specs in mind that does NOT require T1 for high momentum. I am aware this is not how analysis is ususaly done , but can be. ------------------------------------------------------ Flemming Videbaek Physics Department Brookhaven National Laboratory tlf: 631-344-4106 fax 631-344-1334 e-mail: videbaek@bnl.gov ----- Original Message ----- From: "Ian Bearden" <bearden@nbi.dk> To: <brahms-l@bnl.gov> Sent: Tuesday, February 04, 2003 10:38 AM Subject: FS triggers, T1, T2.. | Hi all, | What is the policy for counting the # of triggers for a given setting? | I ask because it seems that with the various trips of T1 and T2 we have | data sets which, although including valid trigger 6 events, are not | optimal since the FFS can only be used when both T1 and T2 are on. | I am not sure if the problems I mentioned have a substantial impact on | the statistics obtained, I just wanted to state the obvious that we | need both T1 and T2 to make FFS tracks. | Cheers, | Ian |
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