Re: What Everyone Should Know about the Stop Masters

Chris Walter (walter@cithe302.cithep.caltech.edu)
Fri, 15 Mar 1996 13:29:40 -0800 (PST)

>
> Hi folks,
>
> I have written up a report on the status of the Stop Masters at
> the request of Chris W.

Really nice job Chris. I have a few questions.

>
> Efficiency (%)
> SM1 SM2 SM3 SM4 SM5 SM6
> ERP 100.00 100.10 99.97 99.96 99.97 100.01
> LIP 100.10 100.10 100.10 100.00 100.00 100.00
> HIP 100.20 100.10 100.00 99.98 99.96 100.01
>

Oooh! Look I win! LIP kicks butt!!

>
> So a while ago, Chris W emailed me about events where the Stop
> Master only knows about a Tohm Trigger even though there are other
> triggers in the events. In run 11834 I found 4 such events, and I am
> confident that these are what are causing all of the missed triggers.
> If you are as interested by this as I am, you will want a little more
> info:
>

OK here is what I am a little curious about: The events I wrote about
had the TOHM causing the STOP, but had *no* TOHM trigger at all. So
you are saying that you saw events that had a TOHM trigger but one of
the SMs on the SPU was missing the TOHM is that right? If that is the
case I guess you have found another class of events. That sounds more
like a problem with the SPU then the STOP master. Would you also have
seen the events I described?

>
> Chris Orth
>

" " Walter