Bad channels and early triggers..

Chris Walter (walter@cithe504.cithep.caltech.edu)
Tue, 26 Sep 1995 00:31:22 -0700 (PDT)

Dear WFD funs,

For your information I find a problem with the following channels:

20E0000

5000000
5010000
5020000
5030000

61B0000

3190000

4000000

The problem is that although there should be muon data around the stop
time in these channels that period is empty. In some cases the data
looks corrupted(e.g. stuck timeWds) and in others one bit of input is
missing(e.b. input 1). I will try to classify them more carefully.

Here is a question for you:

In some events I see that have CSPAM, ERP and LIP triggers the data is
showing up aprox 2.5 usec before the trigger was formed. But I can
tell by looking at the STOP master that the CSPAM caused the STOP.
But the CSPAM is a fast(<=1us trigger) . What is going on here?

-Chris