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Archived Messages for CLAS_DRIFT_CHAMBERS@cebaf.gov: Re: wire status

Re: wire status

Richard Thompson (richardt@jlab.org)
Thu, 16 Apr 1998 12:27:25 -0400 (EDT)

On Thu, 16 Apr 1998, Franz Klein wrote:

>
> Sorry Rich,
> it doesn't make any sense to change the wire status!!
> All old DC_STATUS.map entries are obsolete
> if you change the code!
>
> Please don't do it!
>
> Greetings
> Franz

Like I tried to explain to Joe: 1) I know that, 2) I took care of that.

Here is the time-line for DC_STATUS.map:

INF <-- 9999 <-- 8000 <-- 12 <-- 11 <-- 10 <-- 5 <-- 4
<-- 3 <-- 2 <-- 1

Everything below 8000 is before the Dec97 run. I just ran pdu on run 8099
and put this new dead wire list into the map (using pdu2map) for run 8000.
So if you look at it:

jlabs2> get_map_int -mDC_STATUS.map -ssector1 -istatus -t8200
...
0
0 <---- new DC_GOOD_WIRE definition
0
1
1
1
...

you see that run 8000 is _not_ obsolete. All the others (9999,1,2,3 ...)
don't belong there anyway. I will delete them. The only thing I see that
needs to be done is for run 1 to be filled with an "all wires good" map so
that if someone looks at a run before 8000 (like Sep97), they don't get
some ambiguous dead wire list (like the entry for run 12).

Maybe I shouldn't have even mentioned that I did this. I only wanted to
alert anyone who might be reading the map or the DDLY bank themselves
(like SSLT??) that there was a change.

\ R A Thompson /
/ Dept of Physics and Astronomy University of Pittsburgh \
\ Pittsburgh, PA 15260 /
/ richardt@cebaf.gov 757-269-7475 \