From: W.J. Llope (llope_at_physics.rice.edu)
Date: Fri Feb 14 2003 - 10:44:32 EST
>The grassy common stops appears to be TDC-module related: one TDC unit
>for TOFp (#5) and another for TOFr (the new #9, grrr). We are running
>low on good TDC units so the question is: should I return the bad ones
>to HEEP for repair? Or do we loose them when we do so?
just sign out more. they have many of each now....
also could you get 2 lecroy 380A units? (there are still two
of these in the cabinet right?)
and don't forget about the fee boards... thanks for the gas update
bill
>Obviously,
>returning them tomorrow doesn't get them fixed for Saturday's access ...
>
>
>On a different issue. I asked Bill C. about the status of our gas
>approval. He received the new drawing (or Ralph did) and a
>preliminary(?) procedures document and would be looking into it
>tomorrow. I'll be pushing again tomorrow ...
>
>-f.
>
>
>
>
>
>
>
>W.J. Llope wrote:
>>hi - the tdc dists look o.k. with the small statistics i'm looking
>>at... also, the entries i see >1000 are accompanied by ADC hits (i.e.
>>they're shaded red in my usual histograms) so presently i'm thinking
>>this isn;'t a problem and it's the latter of your two cases...
>>but i'll take another look at this with the next big slug of
>>localmon data - thanks for mentioning it...
>> bill
>>
>>On Thu, 13 Feb 2003, Frank Geurts wrote:
>>
>>>the gras grows on the high end (right side) of the peaks. It would
>>>be interesting to know whether those signals are really
>>>scal[9]=scal[10]=1 or cut just because they are >980
>>>
>>>
>>>W.J. Llope wrote:
>>>
>>>>will do
>>>>
>>>>what side are the tails on? if towards lower chs (i.e. <1000),
>>>>then possibly there is 'data' there. if towards higher chs,
>>>>then problem.
>>>>
>>>>i'm just letting the data collect for the next few minutes (good
>>>>run so far) before cranking it through the usual mill.
>>>>
>>>>but by eye the latest tofp data seems more sensible. i.e. when i see a tdc
>>>>hit, i can count that many chs over in the adcs and also see a hit.
>>>>and vice versa. that's a good sign...
>>>>
>>>>On Thu, 13 Feb 2003, Frank Geurts wrote:
>>>>
>>>>
>>>>>bill, could you take a look at these channels (both physics and pedestal):
>>>>>TOFp T33-39
>>>>>TOFr T25,48,51,55,64-71
>>>>>
>>>>>all of them show interesting tails to the strobe signals when
>>>>>using monConsole. I want to make sure these are strobed signals
>>>>>only (put am puzzled too about the distribution).
>>>>>
>>>>>-f.
>>>>>
>>>>>
>>>>>
>>>>>W.J. Llope wrote:
>>>>>
>>>>>>..more info on effects of today's hardware changes 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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