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Apr 20, 2023 S.Movchan Straw manufacturing and QC 1
Straw machine status• polished anvil• new welding configuration• software for on-line seam quality control status• conclusion
DB, Dubna assembly hall Presented by S.Movchan
Apr 20, 2023 S.Movchan Straw manufacturing and QC 2
CERN polished anvil
Ra=0.04 mkm
Rz=0.33 mkm
Apr 20, 2023 S.Movchan Straw manufacturing and QC 3
New fixture
Tape -> to straw shape
Apr 20, 2023 S.Movchan Straw manufacturing and QC 4
New welding configuration
Apr 20, 2023 S.Movchan Straw manufacturing and QC 5
Seam shape on-line QC by microscope set up
weld seam shape
Apr 20, 2023 S.Movchan Straw manufacturing and QC 6
Software: seam quality on-line control
Set of pictures processing
Modes: - manual - auto (0.8 sec per frame)
Tuning cut level: typical – 0.02
Apr 20, 2023 S.Movchan Straw manufacturing and QC 7
Straw machine: conclusion
Ready:Straw transportation mechanics:
- forward speed – (4-22) mm/sec- reverse speed – 22 mm/sec
Room T and H control – readyUltrasonic generator control – ready
In progress:On-line QC by microscopeClean room start up
In fabrication:Tape pretension mechanicsTape to round shape transfer: set of fixtures - readyLight source for on-line microscope
Preparation:Set up for serial straw test at dP=3 bar Straw bar code printing
Apr 20, 2023 S.Movchan Straw manufacturing and QC 8
Straw machine: conclusion
Design:Tencile machine – doneStorage box for serial straws - option 1 Set of “nipples” for straw long term storageSet up for straw filling by gas: dP=1.2 bar Straw boxes depository inside the clean roomChecker pressure inside filling straw during it
storage
Problem:Electrostatic charge of tape – due to this effect straw transportation speed is non stable. Shuttle speed is constant. => Straw – elastic body.
Apr 20, 2023 S.Movchan Straw manufacturing and QC 9
Spare
Apr 20, 2023 S.Movchan Straw manufacturing and QC 10
Atlas label
NA62 straw label (option 3): 62TSJIN0999999
Apr 20, 2023 S.Movchan Straw manufacturing and QC 11
Straw labeling: label glue to straw
Apr 20, 2023 S.Movchan Straw manufacturing and QC 12
Straw labeling: conclusion
Straw labeling procedure is proposed: - label code - 62TSJIN0999999 (14 digits)
- label size – 10x30 mm - print labels by “label printer” - 2 the same labels will be glued on both straw ends (for robustness) - before straw gluing into module straw label will be read out and cut out - straw # (label) will be replaced by hole # in the “Module holes
numbering DB”
Label reader and DB (based on Excel table) exist at Dubna