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