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

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

Hi Hong, all,

	Thanks for the comments, which I have implemented.  Concerning the ADC 
schedule, I tried to use the working schedule (wjocj IO donloaded from 
IPD and attach) for all dates.  Looking more closely now, I see what 
happened:

- since both Columbia and UT Austin work on ADC, the plan always had a 
set of more or less duplicated tasks for Columbia (6.4.1.1) and Austin 
(6.4.1.2).

As an example, each L4 has a task called "Milestone: Production Complete 
- ASICS".  For Columbia, this is taskID FEE10780, whereas for Austin it 
is taskID FEE20940.

These pairs of tasks were intended to occur at the SAME time, and this 
is how the schedule was originally built.  However, something has gotten 
badly "broken" in P6.  The Columbia date is by now 10-Jun-26, whereas 
the Austin date is now 05-May-27; a full 11 months later!!

	This is clearly a "bug", and I am sure Tim does not expect to take 
almost 2 years from now to test his 40k chips! As an estimate, at their 
current QC rate of 7 minutes per chip, it would take 195 days of 24:7 
operation to test all the chips.  Building in some inefficiencies (eg. 
take average of only 20 days of operation per month), that would be a 
bit less than 10 calendar months.  So, the June 26 date seems more or 
less reasonable, whereas May 2027 is not.

	Tim and I need to go line-by-line through the relevant parts of P6 and 
figure out what has gone wrong, and how to "fix" it.
        
        Regards,
                John

On 6/21/25 11:11 PM, Ma, Hong wrote:
> Hi John,
>
>                  A few comments:
>
> Slide 11: “In schedule, all ADC QC tests will be complete by mid-2026”
>                      The working schedule actually shows the completion in 
> May 2027.  It is misleading to just mention the baseline schedule.
>
> Slide 14: it would be nice to point to the picture where the LSB2s are, just 
> like you did on slide 13 for ALFE and COLUTA
>
> Slide 26: Under 6.4.3 BE Electronics
>
> “Hold FEB2 FDR and launch preproduction”
>
> •
>
> “Hold STRM FDR and launch preproduction”
>
>
> Slide 27: Last bullet. For PRRs it is probably better to say mid-2026, rather 
> than early 2026.
>
> Slide 30: “FY26 will see the completion of the scope in 6.4.1”.  See the 
> comment on Slide 11.
>
>                  Tim should comment on the ADC QC test schedule in the 
> working schedule. If it is true that the last ADC will be delivered in May 
> 2027, it may get very close to the critical path.
>
>                  Best,
>
>                  Hong.
>
>
> From: usatlas-hllhc-lartl2l3-l-request AT lists.bnl.gov 
> <usatlas-hllhc-lartl2l3-l-request AT lists.bnl.gov> on behalf of John Parsons 
> <parsons AT nevis.columbia.edu>
> Date: Saturday, June 21, 2025 at 6:15 PM
> To: usatlas-hllhc-lartl2l3-l AT lists.bnl.gov 
> <usatlas-hllhc-lartl2l3-l AT lists.bnl.gov>
> Subject: [[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at 
> NSF review
>
> Hi all,
>
>          I have posted a draft of my slides for my LAr L2 presentation for the
> upcoming NSF review on the Indico page for our meeting yesterday
> (https://indico.bnl.gov/event/28689/  ). Comments are welcome.
>
>          Regards,
>                  John
> --
> ______________________________________________________________________
>
> 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.com/v3/__http://www.nevis.columbia.edu/*parsons/__;fg!!P4SdNyxKAPE!GxE-combZ3VgnOE4o_b8_l3RB-enxd37z8Cp8CBTWNUDLGf75zZRUMLpZmslKRc-jFf44Tu2-rG1qXeSHQ1vL04Dcmf6u2O07_olW5R-sQa58w$<https://urldefense.com/v3/__http:/www.nevis.columbia.edu/*parsons/__;fg!!P4SdNyxKAPE!GxE-combZ3VgnOE4o_b8_l3RB-enxd37z8Cp8CBTWNUDLGf75zZRUMLpZmslKRc-jFf44Tu2-rG1qXeSHQ1vL04Dcmf6u2O07_olW5R-sQa58w$>
>
> ______________________________________________________________________

--
______________________________________________________________________

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.com/v3/__http://www.nevis.columbia.edu/*parsons/__;fg!!P4SdNyxKAPE!HDHm1AWE1nRWOHqV4xwx0TR21dUGU8AQGRzf-SxcCb9oGeHBVYr2KFFcSVEop9B1Umt9FT7QT4-8Avm2SdgMoKepHV8LRAq9HNi9_FeS3BCY3Q$
      

______________________________________________________________________

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