From: rlj_at_mail.ustc.edu.cn
Date: Tue Feb 04 2003 - 11:33:55 EST
Thanks,Bill
Hello,All:
Johan have sent out the map-email.From the right to left.
The fifth slat(fifth means the number before Bill put in the 704
discrimator.If you see the Johan's map.it should be the sixth one) ,the
first two chn of the 706 discriminator is bad.
And then Bill have put another 704 in the right of the 706 discriminator.
I think In the Johan's map,we must can recognize.Because we just use
only one input/output chn of this 704 discriminator to replace the bad
one channel of 706.
Besides,From the Johan's map,we can see the detail of this bad channel,such
as wich B,which C.
Thanks.
Lijuan
PS:Johan,Can you send the map to me?Thanks!
>
> we found one bad tofr discriminator - fixed. lijuan knows what
> channel it is.... lijuan?
>
> lijuan and johan did a very careful job and rechecked all the
> cabling starting from the pigtails and up to the digitizers.
> they will be sending around some detailed maps shortly.
>
> summarizing all this:
> - there are valid logic or mrpc signals from the detectors seen
> at the digitizer inputs in all the ch-number-areas where the 2 software
> maps indicates there may be the "cabling" problem. i.e.
> good signals are getting to the front panels of the digitizers
> everywhere.
> - the mapping of the B->C cables, which is performed at
> the input and output, respectively, of the platform discriminators is
> _correct_ according to the cable map set up by Katy & The Daniels.
> - the mapping of C cables to tdc inputs is _correct_
> - the mapping of D cables to adc inputs is _correct_
> - the mapping of A(odd) cables to B cables at the pole-tip is
> _consistent_ with the mapping of A(even) cables to D cables...
> i.e. no apparent mismatches at the pigtail->B/D junctions was
> seen.
>
> i.e. the cabling looks rock solid. please take a look
> at the maps that lijuan and johan send around....
>
>
>
>
> overall summary:
> C: successful
> B: successful
> A: we're stumped. but more info in hand now, and more
> to come shortly....
>
>
>
>
>
> --
>
> 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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