U.S. ATLAS HL-LHC Upgrade Level 2 and Deputies-NSF only Management Mailing List

[Gustaaf Brooijmans <gusbroo AT nevis.columbia.edu>]

Hello all,

Please see attached.  We are still running some checks, but at this stage 
it’s also good if you all take a look.  There are some features:

-Tile 90% CL schedule contingency is > available float, but available float 
is calculated from the end of LVPS production to the start of installation.  
If we take something more reasonable, eg completion of batch 1 production, 
the available float jumps to ~220 days.  (see “working summary” tab)

-I’m not sure what we should take for trigger.  Both global and EF Tracking 
have comfortable float, but L0Calo does not.  It has 0 in the sheets, but 
there are a couple of wait tasks that add up to 178 days.  L0Calo is more 
crucial to the start of commissioning I would think, so maybe we should use 
that?  

Cost books and schedules have been posted on the review website.

Best,

Gustaaf

Attachment: 2025-07-nsf-ipr-details_v3a.xlsx
Description: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet