1. Electronics system overview from TKlayout
Stella Orfanelli
, CMS Tracker Week

2. Introduction
Working on getting summaries and info out of tkLayout for services
Under development (not debugged, not updated)
Used as reference among detector, electronics and mechanics designers , to assist communication and decision-making
Not to compare ‘1-1’ now but to trigger conversation for comparison (offline).
Code can be used for different pixel geometry configurations w/o modification
Contents of the talk:
First part : introducing the new summary tab added and pointing out what needs to be updated / discussed
Second part : some useful plots

3. Introduction to the tklayout webpage
Geometry (pixel) tab:
Already existing
Containing info for layers, disk and modules but not in a convenient way for services summaries

4. Introduction to the tklayout webpage
Material (pixel) tab:
Already existing
Containing info for radiation length and inetraction length maps and services ID map.

5. Services ID map OptoConversion FPIX2_#1-#4 OptoConversion
L1, L2, L3, L4
OptoConversion
FPIX1_#1-#7
Barrel Layer 4
Barrel Layer 3
Barrel Layer 2
Barrel Layer 1
FPIX1_#1-#7
FPIX2_#1-#4

6. New entry: tab for pixel electronics “electronics”:
One csv file with Services info.
Three identical tables (one after the other): Barrel, FPIX1, FPIX2

7. New tab for pixel electronics info: “electronics”

8. Services{…}.csv file description: Emphasis on TWP, HV, SP, Cooling
Barrel layer or type of FPIX disk for HV, SP, Cooling,
Barrel layer or ring for TWP
HV, SP, Cooling or TWP
(for fibers, support: blank)
ElementName
Length [mm
Mass [g]
Number from Service ID Map
Radiation length
Mass per length
[g/mm]
Coordinates
Interaction
length

9. Barrel Table Part #1: geometry description
Reshuffling information that was already in the geometry tab
12 rods of 9 modules of 1x2 (L1,L2) or 2x2(L3,L4)
25x100 used along all layers

10. Barrel Table Part #2: Example of powering description
[*] are variables that will be modified.
Not to be trusted now.
SP cable Xsection had been optimized by for old chip power numbers
around 10% average digital power variation standard trigger and hits vs only clock
Not including power for readout
RD53A last week: Sara Marconi

11. Barrel Table Part #2: Powering description
[X] SP RULES BROKEN BY GEOMETRY
Incompatible with chip capabilities
Reminder of “SP rules” as summarised by Charles [July’s tracker week,
Maximum length of SP chain: 8clusters
BPIX rods/FPIX Dees/FPIX rings/FPIX rings side independent from each other
SP chains can be made of “clusters” that can be modules 1x4 or 2x2 with chips on module parallel powered or Two Modules of 1x2 each, parallel powered.
The reason why is that for the moment there is no protection foreseen and only the failure scenario of 1 out 4 chips (meaning the rest will need to carry 32%Ichain extra current) has been studied. There is no guarantee that a chip can carry 100% extra current.

12. E-links info & Summary of Services weights
Info for GBT/#links/speed etc
Summary of services weights [gr] per layer (per Z-end)
Other information that could be useful?

13. FPIX example summary table
[X] Differences on services info:
SP, Cooling and HV are distributed homogeneously on disks. No ring information.
TWP per ring info

14. Part #2 Services plots for OT_Tilted_362_200_Pixel4021
Currently these plots are not generated automatically
Working on making another tab with this kind of plots

15. Twisted Pairs Length distribution
Length of TWP [mm] per Z end
Although L4 at higher radius, the length till the optoconversion dominates.
Min ~400cm and max ~550cm BPIX TWPs.
Very short distances for FPIX TWPs.

16. Total Services radiation length
TWPs dominate 0<η<1, η>3
Cooling has improved since moving to Titanium

17. TWP radiation length

18. Barrel Layer 1 Services

19. Next steps: Call for feedback Next steps:
Converge on number for power+ chains
Update ROC Power numbers
Fill in FPIX info for services
Add Fiber info in the summary table
Currently only on the csv summary
Radiation length plots
Currently manually
Debug and release this version of the code

20. Power&Fiber.xlxs by Corenll