Re: Phase II

[George Lolos <George.Lolos@uregina.ca>]

Hi Elke:

Thanks for the detailed and prompt reply.  As for me being too tired 
last evening, you're right.  :-) However, what confused me was not the 
reference to the temperature stabilization but the connection to the 
electronics for it.  I was with the impression that the temperature (20 
C was mentioned by Elton at the meeting with Carl Jackson) will be 
stabilized by external means in the Hall, not by SiPM related 
electronics.  So clearly I have missed something because last I looked, 
Peltier-type cooling devices for such areas are not cheap and no off the 
shelf items and will create their own heat generated issue.

Take care,

George


Elke-Caroline Aschenauer wrote:

>
>>    
>>
>>>---> I see no mention of the integration of the temperature stabilisation
>>>    in the electronics.
>>>
>>>      
>>>
>>I am baffled by this so I must have missed something.  If we don't go
>>with cooling, as we all agree, how can we stabilize the effects of
>>temperature variations with electronics alone?
>>
>>    
>>
>
>George, you have been also tired yesterday evening. I mix gain and break
>down voltage and you mix cooling and temperature stabilisation.
>
>We have been always saying we don't want to cool to -10^oC to get the dark
>counts down, but to keep the gain and dark count stable we might have to
>keep the temperature stable at room temperature or slighly above. Because
>even if we reach a stable temperature in the hall the situation at the
>location of the SiPMTs and especially from SiPMT to SiPMTs might not be
>stable.
>
>  
>