[Halld-cal] FCAL LV Supply was Beam Test

[Fernando J. Barbosa]

Hi Hovanes,

The HV is from CAEN; the LV (including the SiPM bias) is tentatively 
from Wiener because procurement is still in progress and any company 
that can provide a system meeting the specs can win the contract.

As I mentioned in a previous email, the CW bases do not need a supply as 
sophisticated as the MPOD. Pretty much any off-the-shelf supply can meet 
the FCAL requirements because the controls/regulation are already 
included in the CW base. In other words, the MPOD is a very expensive 
solution for the FCAL and it is not part of the baseline plan.

Best regards,
Fernando




Hovanes Egiyan wrote:
> From the controls point of view, MPV LV modules would probably be 
> better since we
> are going to have to have many Wiener LV&HV modules in the setup anyway.
> Accommodating another type of Wiener module in the controls should not
> be so difficult. I have not done anything so far with MPODs, so I cannot
> say how easy it will be, but hopefully in a month or two we will get some
> experience with it.
>
> Hovanes.
>
>
> On 08/15/2011 02:09 PM, Matthew Shepherd wrote:
>> Hi Fernando,
>>
>> That is correct -- the are not tightly specified.  It seems like some 
>> minimal level of control and monitoring might be desirable.  That is 
>> why I was wondering if there was a preferred choice from the slow 
>> control standpoint:  Hovannes or Elliot, is there a preference?
>>
>> If there is not one, then we can simply pick a suitable model.  The 
>> CAN<->  Ethernet boxes do provide some digital input and output pins 
>> that could be useful to interface simple monitoring or control for a 
>> supply.
>>
>> -Matt
>>
>> On Aug 15, 2011, at 2:04 PM, Fernando J. Barbosa wrote:
>>
>>> Hi Matt,
>>>
>>> GlueX-doc-1035 has an old default configuration using the Wiener 
>>> MPOD system. However, that is just a placeholder for the FCAL - 
>>> GlueX-doc-747 has no data for the FCAL supplies. The FCAL suplies 
>>> (24V) do not have to have tight specs, I believe, on noise or 
>>> regulation and they could be some off-the shelf units. I recall 
>>> these were to be integrated into the FCAL distribution boxes.
>>>
>>> Best regards,
>>> Fernando
>>>
>>>
>>>
>>>
>>> Matthew Shepherd wrote:
>>>> On Aug 15, 2011, at 1:45 PM, Fernando J. Barbosa wrote:
>>>>
>>>>
>>>>> Matt, Elton - Hovanes reminded me about the power supplies for the 
>>>>> FCAL. The contract, I think, is for IU to supply a complete 
>>>>> turn-key detector sub-system which includes the CW bases power 
>>>>> supplies. Do you have an updated diagram showing the distribution 
>>>>> chassis?
>>>>>
>>>> Not at the present moment.  Is there a preferred low voltage power 
>>>> supply vendor that would improve integration into the overall 
>>>> control system?
>>>> -Matt
>>>>
>>> <barbosa.vcf>
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