usatlas-hllhc-lartl2l3-l AT lists.bnl.gov
Subject: U.S. ATLAS HL-LHC Upgrade LAr Level 2 and Level 3 Managers Mailing List
List archive
Re: [[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at NSF review
- From: John Parsons <parsons AT nevis.columbia.edu>
- To: "Ma, Hong" <hma AT bnl.gov>, "usatlas-hllhc-lartl2l3-l AT lists.bnl.gov" <usatlas-hllhc-lartl2l3-l AT lists.bnl.gov>
- Subject: Re: [[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at NSF review
- Date: Sun, 22 Jun 2025 11:22:41 -0400
Hi Tim, all,
I have been looking more closely at comparing the Columbia and UT Austin branches of the working schedule. Some observations and conclusions are given below.
John
- both have the PRR in June 2025, which will actually happen. So far, so good!
- I remember now that the Columbia and UT Austin roles in the QC testing phase are NOT in fact the same. Years ago we thought Columbia might do some "functional" tests, followed by detailed performance QC tests at Austin. Therefore, the Columbia tasks should (and do) finish before the corresponding Austin tasks
- In the end, we (for good reasons) simplified the plan and have all the testing done in Austin, so the timeline of the Columbia tasks is no longer really relevant. We also primed the production+packaging, so all packaged chips are already in hand (compared to the original plan where they were being delivered in batches as the testing was already underway)
- this means the relevant timing is the Austin timing, which is the one Hong pointed to, and which ends in May 2027. That is VERY late!
- I note that the PRR is in June 2025, as it will be. The "Shipping 50%" is then at the end of Jan. 2026, meaning it takes ~7 months to test the first half (and this includes 3 months after PRR to "implement PRR recommendations" before restarting testing in Oct. 2025. Even assuming a full 7 months to get the other 50% tested, that would end around Aug. 2026. Instead, it does not end until May 2027, an another 9 months later!
Regards,
John
On 6/22/25 10:20 AM, John Parsons wrote:
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:// https://urldefense.com/v3/__http://www.nevis.columbia.edu/*parsons/__;fg!!P4SdNyxKAPE!GxE-__;Kg!!P4SdNyxKAPE!CGdAXd5A9XBiTazFDEwBO0oAikDgLlWZKRGGI3SdNYR0-9sCzvtOTON9Dpipbg8xDeDnrqQ5LO1Ub4DhZylQG-HGNAYtLRP7ZfvdEXpw1crUKA$ combZ3VgnOE4o_b8_l3RB-enxd37z8Cp8CBTWNUDLGf75zZRUMLpZmslKRc-jFf44Tu2- rG1qXeSHQ1vL04Dcmf6u2O07_olW5R-sQa58w$<https://urldefense.com/v3/ __https://urldefense.com/v3/__http://www.nevis.columbia.edu/*parsons/__;fg!!P4SdNyxKAPE!GxE-__;Kg!!P4SdNyxKAPE!CGdAXd5A9XBiTazFDEwBO0oAikDgLlWZKRGGI3SdNYR0-9sCzvtOTON9Dpipbg8xDeDnrqQ5LO1Ub4DhZylQG-HGNAYtLRP7ZfvdEXpw1crUKA$ combZ3VgnOE4o_b8_l3RB-enxd37z8Cp8CBTWNUDLGf75zZRUMLpZmslKRc-jFf44Tu2- rG1qXeSHQ1vL04Dcmf6u2O07_olW5R-sQa58w$>
______________________________________________________________________
--
______________________________________________________________________
John Parsons
Nevis Labs, Email: parsons AT nevis.columbia.edu
Columbia University Phone: (914) 591-2820
P.O. Box 137 Fax: (914) 591-8120
Irvington, NY 10533 WWW:
https://urldefense.com/v3/__http://www.nevis.columbia.edu/*parsons/__;fg!!P4SdNyxKAPE!CGdAXd5A9XBiTazFDEwBO0oAikDgLlWZKRGGI3SdNYR0-9sCzvtOTON9Dpipbg8xDeDnrqQ5LO1Ub4DhZylQG-HGNAYtLRP7ZfvdEXoHvPb7jQ$
______________________________________________________________________
-
[[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at NSF review,
John Parsons, 06/21/2025
-
Re: [[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at NSF review,
Ma, Hong, 06/21/2025
-
Re: [[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at NSF review,
John Parsons, 06/22/2025
- Re: [[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at NSF review, Ma, Hong, 06/22/2025
-
Re: [[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at NSF review,
John Parsons, 06/22/2025
-
Re: [[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at NSF review,
Ma, Hong, 06/22/2025
- Re: [[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at NSF review, John Parsons, 06/22/2025
- Re: [[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at NSF review, John Parsons, 06/22/2025
- Re: [[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at NSF review, Tim Andeen, 06/22/2025
-
Re: [[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at NSF review,
Ma, Hong, 06/22/2025
-
Re: [[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at NSF review,
John Parsons, 06/22/2025
-
Re: [[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at NSF review,
Andy Haas, 06/23/2025
-
Re: [[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at NSF review,
John Parsons, 06/24/2025
-
Re: [[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at NSF review,
Andy Haas, 06/24/2025
-
Re: [[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at NSF review,
Ma, Hong, 06/25/2025
- Re: [[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at NSF review, John Parsons, 06/25/2025
-
Re: [[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at NSF review,
Ma, Hong, 06/25/2025
-
Re: [[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at NSF review,
Andy Haas, 06/24/2025
-
Re: [[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at NSF review,
John Parsons, 06/24/2025
-
Re: [[Usatlas-hllhc-lartl2l3-l] ] draft slides posted for LAr L2 talk at NSF review,
Ma, Hong, 06/21/2025
Archive powered by MHonArc 2.6.24.