U.S. ATLAS HL-LHC Upgrade LAr Level 2 and Level 3 Managers Mailing List

[John Parsons <parsons AT nevis.columbia.edu>]

Hi Hong,

        Thanks for the update.  It is very important that
ALFE1 make the November submission date, so if using SPI
reduces the risk of further delays, I definitely agree
it should be done.

                John

On 10/15/19 11:35 AM, Ma, Hong wrote:
>                  Sorry I missed the meeting.
>
>                  Here is the status of ALFEv1, based on input from Mietek:
>
> ALFE1 analog part is currently being finalized, and given that we still 
> have a little bit of time, additional improvements on the layout level 
> are being implemented e.g. shrinking Shaper amplifiers layout by ~ 20% 
> or addition of de-coupling capacitors for bias lines.
>
> ALFE1 slow control will be implemented by means of SPI, and SPI block 
> has been implemented on both schematic and layout levels. Previously, we 
> were hoping to implement I2C, but due to relatively limited 
> documentation, we concluded that implementing I2C in ALFE1 would 
> introduce too much risk. We’ll still be able to control ALFE1 with the 
> LpGBT by means of its GPIOs. There is a possibility of implementing both 
> SPI and I2C in ALFE1, with a bypass option, but that strongly depends if 
> the Omega group is able to provide us with a plug-and-play I2C block for 
> ALFE1.
>
>                  Hong.
>
> *From: *Usatlas-hllhc-lartl2l3-l 
> <usatlas-hllhc-lartl2l3-l-bounces AT lists.bnl.gov> on behalf of John 
> Parsons <parsons AT nevis.columbia.edu>
> *Date: *Tuesday, October 15, 2019 at 11:28 AM
> *To: *"usatlas-hllhc-lartl2l3-l AT lists.bnl.gov" 
> <usatlas-hllhc-lartl2l3-l AT lists.bnl.gov>
> *Subject: *Re: [Usatlas-hllhc-lartl2l3-l] weekly LAr mtg TOMORROW at 
> 11:00 am NY time
>
> A reminder of our mtg NOW.
>
> On 10/14/19 10:42 PM, John Parsons wrote:
>
>     Hi all,
>
>            We will meet this week in our NEW regular
>
>     timeslot, namely Tues. at 11:00 am NY time.  Please come
>
>     prepared to give an update on your L3.  I created
>
>     an agenda page at https://indico.bnl.gov/event/6973/.
>
>            Regards,
>
>                    John
>
> --
>
> ______________________________________________________________________
>
> John Parsons
>
> Nevis Labs, Email: parsons AT nevis.columbia.edu 
> <mailto:parsons AT nevis.columbia.edu>
>
>    Columbia UniversityPhone: (914) 591-2820
>
> P.O. Box 137Fax: (914) 591-8120
>
> Irvington, NY 10533WWW: 
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>
>
> ______________________________________________________________________
>
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--
______________________________________________________________________

John Parsons
Nevis Labs,             Email: parsons AT nevis.columbia.edu
 Columbia University    Phone: (914) 591-2820
P.O. Box 137            Fax: (914) 591-8120
Irvington, NY 10533     WWW: 
https://urldefense.proofpoint.com/v2/url?u=http-3A__www.nevis.columbia.edu_-7Eparsons_&d=DwIDaQ&c=aTOVZmpUfPKZuaG9NO7J7Mh6imZbfhL47t9CpZ-pCOw&r=DSVO6Re8kg14S-cQbkBC2zfSx6Yt2GtkcD3fTWOeyfXXTwIA3TKWV-phDKykUKDr&m=tHtxSN3ju_d5pgNebhLIpH3PMdAwiJ_cHWOpOo5-6KI&s=DWRljNVbhQGkdvVf40FOCyqLC5CMfQ8LkSZgoud2x88&e=
    

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