From - Fri Oct 15 15:52:16 1999 Received: from galileo.pi.infn.it (infnts.ts.infn.it [140.105.6.150]) by quark.ts.infn.it (8.9.3/8.9.3) with SMTP id SAA08906 for ; Thu, 5 Aug 1999 18:59:36 +0200 (MET DST) Received: from galileo.pi.infn.it (192.84.133.117) by INFNTS with TCP/IP SMTP; Thu, 5 AUG 99 18:59 CET Received: from mailserver.pi.infn.it by galileo.pi.infn.it (AIX 4.1/UCB 5.64/4.03) id AA55514; Thu, 5 Aug 1999 18:59:33 +0200 Received: from FNAL.FNAL.Gov (fnal.fnal.gov [131.225.9.8]) by mailserver.pi.infn.it (8.8.8/8.8.8) with ESMTP id SAA19180; Thu, 5 Aug 1999 18:01:02 +0200 Received: from cdf.uchicago.edu (nakaya@cdf.uchicago.edu) by FNAL.FNAL.GOV (PMDF V5.1-12 #3998) id <01JEEOLEAJHS000234@FNAL.FNAL.GOV> (original mail from nakaya@cdf.uchicago.edu); Thu, 5 Aug 1999 11:59:20 -0500 CDT Received: from cdf.uchicago.edu (nakaya@cdf.uchicago.edu) by FNAL.FNAL.GOV (PMDF V5.1-12 #3998) with ESMTP id <01JEEOLDK0GQ00023H@FNAL.FNAL.GOV> for svt-expand@reprocess.FNAL.FNAL.GOV; Thu, 05 Aug 1999 11:59:17 -0500 Received: (from nakaya@localhost) by cdf.uchicago.edu (8.9.3/8.9.3) id LAA12918; Thu, 05 Aug 1999 11:59:17 -0500 Date: Thu, 05 Aug 1999 11:59:17 -0500 To: svt@fnal.gov Cc: nachtman@physics.ucla.edu Errors-To: svt-owner@fnal.gov Message-Id: <199908051659.LAA12918@cdf.uchicago.edu> X-Authentication-Warning: cdf.uchicago.edu: nakaya set sender to nakaya@cdf.uchicago.edu using -f From: Tsuyoshi Nakaya Subject: HIT Status word to L2 Hi, As we discussed long time ago, we will send the Hit Status (Quality) word for the L2 decision through the L2 interface board. The main purpose of this information is that we use the hit quality (how many hits are in which layer or how many long cluster hits are there) for the L2 decision. Currently, there are 5 bits available to send information to L2 by the interface board. The 5 bits word is defined as below. If you have any comments, please respond me ASAP. This 5 bits word is sent in the Track Fitter status word, which used to send the Track Fitter ID word (which should be same as the Sector ID). Thanks, Tsuyoshi ================== Definition of the Hit Status Word ============== NOTE: hits of layer is shown as (0,1,2,3,4) when we have hits in all 5 SVX layers. x: indicates that we have no hit. *: indicates that we have a hit with long cluster %: indicates that we have no hit or a hit with long cluster. (x,1,2,3,4) means that we have no hit at the layer 0, but have hits at layer 1, 2, 3 and 4. Hit Status Word Layer with a hit 0 (0,1,2,3,4) 1 (0,1,2,3,%) 2 (0,1,2,%,4) 3 (0,1,%,3,4) 4 (0,%,2,3,4) 5 (%,1,2,3,4) 6 (1,2,3,x,*) or (1,2,3,x,x) 7 (1,2,3,*,x) or (1,2,3,*,*) 8 (1,2,x,4,*) or (1,2,x,4,x) 9 (1,2,*,4,x) or (1,2,*,4,*) 10 (1,2,x,*,5) or (1,2,x,x,5) 11 (1,2,*,x,5) or (1,2,*,*,5) 12 (1,x,3,4,*) or (1,x,3,4,x) 13 (1,*,3,4,x) or (1,*,3,4,*) 14 (1,x,3,*,5) or (1,x,3,x,5) 15 (1,*,3,x,5) or (1,*,3,*,5) 16 (1,x,*,4,5) or (1,x,x,4,5) 17 (1,*,x,4,5) or (1,*,*,4,5) 18 (x,2,3,4,*) or (x,2,3,4,x) 19 (*,2,3,4,x) or (*,2,3,4,*) 20 (x,2,3,*,5) or (x,2,3,x,5) 21 (*,2,3,x,5) or (*,2,3,*,5) 22 (x,2,*,4,5) or (x,2,x,4,5) 23 (*,2,x,4,5) or (*,2,*,4,5) 24 (x,*,3,4,5) or (x,x,3,4,5) 25 (*,x,3,4,5) or (*,*,3,4,5) 31 Any others The summary of the Hit Status Word (Hit_stat): (1) If Hit_stat is 0, we have a perfect hit with 5/5 SVX planes. (2) If Hit_stat is between 1 and 5, we still have a perfect hit with 4/5 SVX planes. (3) If Hits_stat is between 6 and 25, we have a bad quality hit with 4/5 or three good hits with 3/5. Currently, there is NO big difference of Hits_stat between 6 and 7, between 8 and 9, and so on.