[Halld-tracking-hw] Preamps

[Fernando J. Barbosa]

Hi all,

It seems that Monday @ 10 is preferable to most.

Gerard, I will discuss with you any issues related to the preamps and 
ASICs afterwards.

In preparation for the meeting, I suggest reviewing GlueX docs 1070, 
1079 and 1364. I will send an email with the agenda for the meeting by 
the end of the week.

Thanks and best regards,
Fernando

Curtis A. Meyer wrote:
> Monday at 10:00am would be great!   Curtis
> On 6/9/10 2:31 PM, Fernando J. Barbosa wrote:
>> Hi Curtis,
>>
>> Would Monday @ 10  next week work for everyone?
>>
>> Best regards,
>> Fernando
>>
>>
>>
>> Curtis A. Meyer wrote:
>>> Hi Fernando
>>>
>>>   the next tracking meeting is not until June 23, so if we wait 
>>> until then to discuss this
>>> issue, we will certainly fail to meet your deadline of June 25. It 
>>> also takes several days
>>> of cosmic running to get a data point, so checking anything also 
>>> takes time. If there is any
>>> way that we could have a meeting next week, it would help speed 
>>> things along.
>>>
>>>   thanks - Curtis
>>>
>>>
>>> On 6/9/10 12:55 PM, Fernando J. Barbosa wrote:
>>>> Hi Naomi,
>>>>
>>>> I suggest we reserve part of the next tracking meeting to discuss 
>>>> these issues.
>>>>
>>>> Let me also take the opportunity to emphasize that the CDC and the 
>>>> FDC groups must finalize their measurements so that the procurement 
>>>> of the ASICs is not impacted. This means that I would like to close 
>>>> this project by 25 June 2010.
>>>>
>>>> Thanks and best regards,
>>>> Fernando
>>>>
>>>>
>>>> Naomi Jarvis wrote:
>>>>>
>>>>> Good morning!
>>>>>
>>>>> I would like to talk about the new preamp but I don't think there 
>>>>> will be enough time in our tracking mtg this morning.
>>>>> The concerns are that the preamp output is topping out at around 
>>>>> 500 mV even with the cosmics, and the gain for cosmics seems to 
>>>>> have increased, whereas for Fe55 it was ~1/3 less.
>>>>>
>>>>> I put one page on the wiki      
>>>>> http://www.jlab.org/Hall-D/software/wiki/index.php/CDC#Preamp4_.28GlueXdoc1364_Tbl_2_Row_2.29 
>>>>>
>>>>> The recent cosmic runs there took a week each, and were with the 
>>>>> chamber flat, ie 90 degree cosmics.   I'll add more data as it 
>>>>> becomes available;  at present it is counting at 2kV.
>>>>> Can we set up a time to talk about this next week?   (The rest of 
>>>>> this week is out for us; I think the only times we cannot do next 
>>>>> week are 1pm Tues + the regular mtg on Wed).
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Naomi.
>>>
>>>
>
>
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