FPIX Maintenance Plan
List repair: BpO
Disk 1: 1 panel change
FPix_BpO_D1_BLD5_PNL2 PLQ2_ROC6 no analog signal + resync problem? ➜ no investigation (panel change)
Disk 2: no panel change
FPix_BpO_D2_BLD2_PNL2 dirty fiber (large black RMS) ➜ no investigation (no panel change) FPix_BpO_D2_BLD3_PNL1 dirty fiber (large black RMS) ➜ no investigation (no panel change) FPix_BpO_D2_BLD3_PNL2 dirty fiber (large black RMS) ➜ no investigation (no panel change)
Panel needs:
List repair: BpI
Disk 1: no panel change
FPix_BpI_D1_BLD7_PNL1 sense wires disconnected ➜ no investigation (no panel change) FPix_BpI_D1_BLD7_PNL2 sense wires disconnected ➜ no investigation (no panel change) FPix_BpI_D1_BLD8_PNL1 sense wires disconnected ➜ no investigation (no panel change) FPix_BpI_D1_BLD8_PNL2 sense wires disconnected ➜ no investigation (no panel change) FPix_BpI_D1_BLD9_PNL1 sense wires disconnected ➜ no investigation (no panel change) FPix_BpI_D1_BLD9_PNL2 sense wires disconnected ➜ no investigation (no panel change)
Disk 2: no panel change
FPix_BpI_D2_BLD4_PNL1 cannot i2c to AOH ➜ investigation (no panel change) FPix_BpI_D2_BLD4_PNL2 cannot i2c to AOH ➜ investigation (no panel change) FPix_BpI_D2_BLD5_PNL1 cannot i2c to AOH ➜ investigation (no panel change) FPix_BpI_D2_BLD5_PNL2 cannot i2c to AOH ➜ investigation (no panel change) Fpix_BpI_D2_BLD6_PNL1 cannot i2c to AOH ➜ investigation (no panel change) Fpix_BpI_D2_BLD6_PNL2 cannot i2c to AOH ➜ investigation (no panel change)
List repair: BmO
Disk 1: 1 panel change ?FPix_BmO_D1_BLD7_PNL1 no signal ➜ investigation (no panel change ?) FPix_BmO_D1_BLD7_PNL2 ...
FPix_BmO_D1_BLD8_PNL1 ... FPix_BmO_D1_BLD8_PNL2 ... FPix_BmO_D1_BLD9_PNL1 ...
FPix_BmO_D1_BLD9_PNL2 low analog signal amplitude (since 2009) ➜ no investigation (panel change)
Disk 2: 1 panel change ?
FPix_BmO_D2_BLD8_PNL1 slow rise time ➜ investigation (no panel change ?) FPix_BmO_D2_BLD8_PNL2 ...
FPix_BmO_D2_BLD7_PNL1 ...
FPix_BmO_D2_BLD7_PNL2 temperature probe disabled ➜ no investigation (no panel change) FPix_BmO_D2_BLD9_PNL1 slow rise time ➜ investigation (no panel change ?)
Panel needs:
List repair: BmI
Disk 1: 2 panels change
FPix_BmI_D1_BLD6_PNL1 flat signal + temperature probe disabled ➜ no investigation (panel change)
FPix_BmI_D1_BLD11_PNL2_PLQ2_ROC6 no analog signal (since 2009) ➜ no investigation (panel change)
Disk 2: no panel change ?
FPix_BmI_D2_BLD10_PNL1 slow channel ➜ investigation (no panel change ?) FPix_BmI_D2_BLD10_PNL2 slow channel ➜ investigation (no panel change ?)
Panel needs:
FPix_BmI_D1_BLD6_PNL1 is P4L kind
Repair sequence
List of broken parts and checkout list:
https://cms-docdb.cern.ch/cgi-bin/DocDB/ShowDocument?
docid=11597
https://cms-docdb.cern.ch/cgi-bin/DocDB/ShowDocument?
docid=11713
List of spare components at TIF: https://cms-docdb.cern.ch/
cgi-bin/DocDB/ShowDocument?docid=11797
I recommend the following checkout sequence:
1.
BmO: higher number of different problems, including slow channels +
1 panel change
2.
BmI: slow channels + 2 panels change
3.
BpO: 1 panel change
Basic idea
Perform a
checkout in order to understand if the
problems are still present and if there are new ones
Understand the “not-yet-understood” cause of the
problems
To do before ...
To do before starting the checkout:
Test and leak-tests C6F14
Clean / re-arrange the clean room
Move “clean-room-specific-clothes” from TIF to P5
DCS system up and running
Run Pilot Run Detector as final “GO-NO-GO” to the pixel lab at P5
To do before starting the maintenance:
Install panel test stand at P5
Install microscope at P5
Define the clean/safe area where to perform the repair
Move cabinet with plexiglass windows from TIF to P5
Move spare components from TIF to P5 cabinets: port-cards, AOH,
DOH, etc...
Manpower from FNAL
The “not-yet-understood” problems are essentially related
to the slow channels
Once the first half cylinder will be investigated, we can
make a more concrete plan for the technicians from FNAL
to come for the exchange of the broken panels
Any way, I think that the technicians should come only
after all 4 half cylinders have been throughly investigated
A possible scenario: we find a weak point in the system
and we want to fix it on all 4 half cylinders
After the maintenance
Calibrate the detector at different temperature and store
results for future extrapolations ?
Integrate the pilot blade detector into the current
detector
Check the detector status periodically and right before the
reinsertion in CMS (?)
People P5 clean-room Extraction Maintenance Sub-detector
Chertok Maxwell X FPix
Conway John X FPix
Bolla Gino X X X FPix
Ricci-Tam Francesca X X X FPix
Yohay Rachel X X X FPix
D'Angelo Pasqualino X X X FPix
Jennifer Sibille, Tobias
Lapsien X FPix
Dinardo Mauro X X FPix
Gala Kaufman software ? FPix / BPix
Nic Eggert software ? FPix / BPix
Luke Winstrom software ? FPix / BPix
Lalith Perera DCS FPix
Bora Akgun X X (software) FPix
Zenz Seth X (software) FPix
Marc Dunser X (software) BPix
Silvan Streuli X X BPix
Roland Horisberger X BPix
Tilman Rohe X BPix
Wolfram Erdman X X BPix
Starodumov Andrei X BPix
Danek Kotlinsky X BPix
Hans-Christian Kaestli X BPix
