Re: TCDs and Timeouts

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From: W.J. Llope (llope_at_physics.rice.edu)
Date: Fri Jan 24 2003 - 12:39:28 EST


draft response to Hank...
note this response is based on a discussion w/ john and it seems to have
a somewhat different spin than that in frank;s proposed response...

i'm not sure how we should handle responses to tonko's add'l
questions (same message or another), but i'm also thinking frank's proposed
responses to b and c aren't exactly the information tonko was
looking for - so please comment on frank's proposed answers
to the tonko questions too... thanks.....

>People -- sorry for the last inclusion - forgot about hyper. I have posted the
>document on the web at:
>http://www.star.bnl.gov/STAR/html/trg_l/run2003/TCDs.htm
>
>-- Still want to know how your detector responds to a missed Level2
>command. --
>thanks -- Hank
>

hello hank,
        we're assuming that you mean 'how do we respond to *an
occasional* missed L2'....

        what happens in general is simple. if we got a L0
but no L2, the system times-out (now after a delay of 100ms),
and then the event is simply flushed.... so, no problem if
this is an occasional occurrence - the system can handle this...
        if you're talking about something that is to occur
often or always though, we would have/cause any problems,
but we'd also not be collecting any data either....

-- 

W.J. Llope, Ph.D.                      Res. Assoc. Professor T.W. Bonner Nuclear Laboratory         phone: 713-348-4741 Rice University, MS-315                fax: 713-348-5215 6100 S. Main St.                   Houston, TX 77005-1892             e-mail: llope_at_physics.rice.edu WWW home:   http://wjllope.rice.edu/default.html

--                       


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