Difference between revisions of "ITk Endcap At Nikhef"
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The construction of the ITk Strip End-caps is done at Nikhef. On this page, you will find the information related to that process. | The construction of the ITk Strip End-caps is done at Nikhef. On this page, you will find the information related to that process. | ||
− | + | [[File:EC1 on 25-05-2023.jpg|none|thumb|EC1 structure on 25/05/2023]] | |
Author: Andrea García Alonso | Author: Andrea García Alonso | ||
Revision as of 14:45, 8 June 2023
The construction of the ITk Strip End-caps is done at Nikhef. On this page, you will find the information related to that process.
Author: Andrea García Alonso
Wheel production
Wheel conduction after assembly
Wheel and Blade production documentation & characterisation
Wheel and Blade production documentation & characterisation
Wheel locking point measurements
Wheel locking point measurements
Wheel QA/QC
Inner ring measurements
End-cap structure
- Characterization of mechanical behaviour EC structure at cold temperatures
EC structure temperature studies
- Stiffener disk measurements
The stiffening disks of the End-caps, made of Ultem foam with a carbon-fiber face-sheet, were produced and tested at Nikhef. The stiffening disks provide structural stiffness to the EC and act as a thermal barrier. To certify that the three manufactured stiffening disks comply with the specifications, an ATLAS internal note was written to explain the thermal deformation tests carried out at Nikhef, at the end of 2021 and the beginning of 2022. Although it is quite difficult to measure small thermal deformations on such big structures, three tests were performed: temperature changes, local temperature gradients, and global temperature gradients. The results show that the deformations in two disks are consistent with the specifications. The remaining disk is chosen as spare since it deforms above expected, although still mechanically acceptable.
You can find the ATLAS internal note here: https://cds.cern.ch/record/2824857?. In case you don't have access, please contact Andrea García Alonso.
- PP1 patch panel
- Cooling manifolds
The ITk strip End-cap detector consists of 6 wheels that each accommodate 32 petals. The petals are cooled with a 2-phase CO2 system using cooling service modules that serve 16 petals, corresponding to half a wheel.
Status on 1st June 2023:
Disk 0 manifolds fabrication is not finished
All manifolds for disk 1 and disk 2 are fabricated, the As and Bs for disk 3 are fabricated as well. Disk 2, outlet manifolds A, B, C and D are cleaned by 31st May 2023.
Working schedule of Pranati and Ali:
- Thursday 15th: first pair of inlet manifolds, aka disk 2 inlet manifolds A and B. Then all EC1 disk 2 manifolds would be ready. And change to disk 1 inlet manifolds A and B.
- Friday 16th: move on to disk 1 outlet manifolds A and B. Then all EC1 disk 1 manifolds would be ready. And continue with disk 3 outlet manifolds A and B.
- Thursday 22nd: finish with disk 3: disk 3 inlet manifolds A and B. Then all EC1 disk 3 manifolds would be ready.
- Monday 26th: if previous days' objectives were not achieved, day to wrap things up (or do more A-B manifolds if they get ready by then). Also, Andrea García starts the pressure tests with disk 1 inlet manifolds.
In July, Osama continues with the manifolds of EC2.
Outlet Manifold | Fabricated | Alcohol flushing cleaning | Preassure test | Inlet manifold | Fabricated | Alcohol flushing cleaning | Preassure test | |
---|---|---|---|---|---|---|---|---|
Disk 0 - A | Disk 0 - A | |||||||
Disk 0 - B | Disk 0 - B | |||||||
Disk 0 - C | Disk 0 - C | |||||||
Disk 0 - D | Disk 0 - D | |||||||
Disk 1 - A | YES | Disk 1 - A | YES | |||||
Disk 1 - B | YES | Disk 1 - B | YES | |||||
Disk 1 - C | YES | Disk 1 - C | YES | |||||
Disk 1 - D | YES | Disk 1 - D | YES | |||||
Disk 2 - A | YES | DONE - 25/05/2023 | Disk 2 - A | YES | ||||
Disk 2 - B | YES | DONE - 25/05/2023 | Disk 2 - B | YES | ||||
Disk 2 - C | YES | DONE - 31/05/2023 | Disk 2 - C | YES | ||||
Disk 2 - D | YES | DONE - 31/05/2023 | Disk 2 - D | YES | ||||
Disk 3 - A | YES | Disk 3 - A | YES | |||||
Disk 3 - B | YES | Disk 3 - B | YES | |||||
Disk 3 - C | Disk 3 - C | |||||||
Disk 3 - D | Disk 3 - D | |||||||
Disk 4 - A | Disk 4 - A | |||||||
Disk 4 - B | Disk 4 - B | |||||||
Disk 4 - C | Disk 4 - C | |||||||
Disk 4 - D | Disk 4 - D | |||||||
Disk 5 - A | Disk 5 - A | |||||||
Disk 5 - B | Disk 5 - B | |||||||
Disk 5 - C | Disk 5 - C | |||||||
Disk 5 - D | Disk 5 - D |
Cleanroom at Nikhef
Miscellaneous documents
- Click here for the request regarding temporary connectors (pdf).
- ITk pictures by Jesse van Dongen
- EC mockup fb2020