Please only send concise run summaries on this list, not comments which
may or may not be relevant or correct.
Regards,
-- tancredi
________________________________________________________________________________
Tancredi Botto, phone: +1-617-253-9204 mobile: +1-978-490-4124
research scientist MIT/Bates, 21 Manning Av Middleton MA, 01949
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On Sat, 19 Oct 2002, Adrian T Sindile wrote:
> Hi, everybody!
>
> > We had various problems in the D-tunnel all through saturday morning.
> > Things seemed ok but inded we were sending a wroing gate to the tof;s
>
> This was my diagnostic on Thursday at 4 PM - John, Peter and Tancredi
> heard it then... it was dismissed later that night when Tancredi
> recommended people not to jump to conclusions analyzing runs taken while
> cables were plugged and unplugged.
>
> > I believe that the hv of the tof's should increase by more than 10-20V
> > and maybe should go 10 % from the current voltage, for starters. I talked
> > to johjn and he also agrees that the first priority is gain matching...
> > That is done with cosmics so requires no accelerator operation in the
> > ring.
>
> This is again no news since all last week I was struggling to do it while
> people did not seem concerned about it, giving it apparently a very low
> priority. Tuesday was used for beam studies, Wednesday I was
> troubleshooting bad TDC cables installed earlier, Thursday I was only able
> to get back meaningful TDCs and come up with the above diagnostic.
> I honestly think that, in order to be efficient, everybody should
> doublecheck their own work: if somebody makes some cables, that person
> should be responsible for making good cables, if somebody installs/swaps
> cables, that person should make sure everything is back as before etc. -
> no particular person in mind here.
> I do not mind troubleshooting, but it is easier for whoever makes a change
> to make sure everything is OK. Otherwise, I would have to check all the
> DAQ system before every cosmic run I take...
>
> > Hopefully tavi and adrian will carry us far enough that the we can use
> > beam again tomorrow evening. Manouch is "cancelling" CCR shifts. I cancel
> > the night shift of tonight. Tavi and Adrian are the nextg people on shift.
>
> I will personally do my best, but as of now I have no idea what state the
> TOFs are in and why, all of a sudden, after run 2145 on October 9th
> (anyone could check to see it was very close to the ADC target channels
> found in the TOF logbook) everything stopped working properly.
>
> I think I still need two or three shifts with no beam and with
> recognized high priority - I am back at the starting point now. Please let
> me know if the DAQ will be modified again soon in any way - we need a
> stable setup for fine-tuning.
>
> Regards,
>
> Adrian
>
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