[Halld-tagger] photon beam working group meeting this morning

[Fernando J Barbosa]

Hi Richard,

You proposed an architecture that employed a built-in solution for power 
and bias supplies, thus your flexibility to control every SiPM via DACs. 
Your internal power sources should meet FCC Class B for EMI or better. 
These should already be part of your design and procurement as there are 
no other budget items in our accounts. I would be happy to review your 
specs and provide a recommendation.

Best regards,
Fernando




On 9/30/2013 3:35 PM, Richard Jones wrote:
> Fernando,
>
> What do you propose for the Vbias and low voltage supplies for the 
> microscope?  One idea would be to replicate what you are using for the 
> pair spectrometer.  Another idea would be to go out and buy something 
> different and unique to our system.  I would be willing to go with 
> either, and appreciate your recommendation.
>
> -Richard Jones
>
>
> On Mon, Sep 30, 2013 at 3:18 PM, Fernando J Barbosa <barbosa at jlab.org 
> <mailto:barbosa at jlab.org>> wrote:
>
>     Hi Hovanes,
>
>     Correct, no MPODs needed in the tagger hall.
>
>     Best regards,
>     Fernando
>
>
>
>
>     On 9/30/2013 2:36 PM, Hovanes Egiyan wrote:
>>     Hi Richard,
>>
>>     here is a link to the Wiener MPOD boards that are used
>>     for the low voltages for BCAL SiPM boards and the drift chamber
>>     preamp boards.
>>     http://www.wiener-d.com/sc/power-supplies/mpod--lvhv/mpod-lv-module.html
>>     I believe Fernando uses flavors of MPV 8008 and MPV 8030 boards.
>>
>>     To use these boards, one needs to put them into a Wiener MPOD
>>     (full,mini,micro) crate:
>>     http://www.wiener-d.com/sc/power-supplies/mpod--lvhv/
>>     But as far as I know, there are no MPOD crates that are planned for
>>     installation in the tagger hall, which can be a problem.
>>
>>     Hovanes.
>>
>>
>>     On 09/30/2013 08:11 AM, Richard Jones wrote:
>>>     Photon WG members,
>>>
>>>     I suggest that we go ahead and have our regular biweekly working
>>>     group meeting this morning, even though there is a collaboration
>>>     meeting later on this week.  There are things we need to discuss
>>>     that are not going to come up at the collaboration meeting, and
>>>     there may be things that we need to raise at the collaboration
>>>     meeting that we should discuss within the group first.  I have
>>>     put a draft agenda in the usual place on the wiki.  Please
>>>     modify as desired.
>>>
>>>     -Richard J.
>>>
>>>
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>>
>>
>>
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>
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