[Solid_cc] MAROC as default readout?

[Alexandre Camsonne]

Jack, will make a 64 amplifier board with one amplifier on each pixel,
though his design is a little bit big ( maybe take space of 9 PMTs. So
we might only be able to test one PMT at a time.

One way to test maybe two or more would be to put a ribbon cable to go
two other boards, we will have a bit more capacitance but it might
still be better than sum of 16.


Alexandre

On Mon, Aug 29, 2016 at 11:34 AM, Alexandre Camsonne <camsonne at jlab.org> wrote:
> We don't have time for that to have something ready when we install,
> maybe later in the run we can try to put it in after we get it to work
> but for now we assume all 64 channels are put together either
> passively for Temple, or using amplifiers and a board if it is ready
> by then.
>
> Alexandre
>
> On Mon, Aug 29, 2016 at 11:00 AM, Zhiwen Zhao <zwzhao at jlab.org> wrote:
>> Hi, Michael
>>
>> I think it maybe possible to borrow some MAROC for the beamtest from INFN
>> and/or jlab
>> We did this test with 4 MAPMT at Fermi lab in May
>>
>> Also I don't know if a simple summing board without proper amplification
>> will work for you test with 1 or 2 p.e. at trigger
>>
>> Let's meet at 1:15PM with this line
>> https://bluejeans.com/8487027744
>>
>> Zhiwen
>>
>>
>> On 8/29/2016 9:49 AM, Michael Paolone wrote:
>>>
>>> Hey Zhiwen,
>>>
>>> I can meet (and Sylvester probably can too) at 1:15 and/or 2pm if you need
>>> us.  Also, I thought Alex told us that a MAROC setup isn't likely for the
>>> beam test.  Right now he has a chip, but no readout for it besides the
>>> default LabView USB connector, which isn't good enough for any kind of
>>> DAQ.  Are you thinking we can borrow them from the RICH group?
>>>
>>> At this level, we might not need the summing board at all.  The 4 MaPMTs
>>> could have non-amplified sums (simple channel outputs soldered together)
>>> for the test, however those outputs would NOT be gain matched.  I would
>>> really like having the individual connector/summing boards for testing
>>> purposes (It gives us a standardized way to test AGAINST the MAROC
>>> designs, and would be a MAROC backup), but you are correct that we will
>>> eventually migrate over to a complete MAROC based testing and prototyping.
>>>
>>> -Michael
>>>
>>>
>>>> Hi, Michael
>>>>
>>>> Alex said that we can assume MAROC as default readout for both LGC and
>>>> HGC now
>>>> refer to slide 18 of his talk yesterday
>>>>
>>>> http://hallaweb.jlab.org/12GeV/SoLID/meeting_coll/2016_08/SoLID-DAQ-collaboration-meeting-Aug26th-2016.pdf
>>>> There are also ideas of adding TDC for LGC as trigger
>>>> Alex can explain it better.
>>>>
>>>> We probably want to think about what to use for the upcoming beamtest.
>>>> Even we can find and borrow enough MAROC readout, it still needs time to
>>>> setup its software chain.
>>>> Or we can think of using a simple summing board.
>>>>
>>>> For the simple board which was regarded as default option previously, we
>>>> can still make it
>>>> But using MAROC as default changes the goal and scope of its making and
>>>> testing.
>>>> If you want to use this as readout for beamtest, it has to be worked on
>>>> quickly.
>>>>
>>>> Alex,Chao and I plan to meet with Jack at 2PM on Monday.
>>>> We probably should meet at 1:15PM for half an hour to clarify our need
>>>> first.
>>>> Let me know and I can setup a phoneline.
>>>>
>>>> Zhiwe
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>>>
>>>
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