8-Mar-16S.Movchan Straw manufacturing and QC1 Straw machine status anvil new welding configuration software for on-line seam quality control conclusion Presented by S.Movchan

8-Mar-16S.Movchan Straw manufacturing and QC2 Anvil (May 2010) Ra=0.04 µm Rz=0.33 µm (scratches)

8-Mar-16S.Movchan Straw manufacturing and QC3 Anvil (June 2010) Anvil was used for straw manufacture. A metal deposit was found on it surface. Deposit was study at CERN: - diameter – about 2 mm - it is hill and it height is about (15-20) µm - material - mainly Al (due to used Al tape for straw manufacture) Deposit can be easy removed by fine-grained emery paper Was observed that anvil quality surface is the same after deposit was removed Recommendation: - this part of anvil to do easy changeable and used one per straw - remove deposit by fine-grained paper and clean this parts by ultrasonic bath - for this start re-design of anvil - investigate possibility of anvil hard coating

8-Mar-16S.Movchan Straw manufacturing and QC4 Anvil 8 iterations of anvil already to do …

8-Mar-16S.Movchan Straw manufacturing and QC5 New welding configuration

8-Mar-16S.Movchan Straw manufacturing and QC6 Seam shape on-line QC by microscope set up weld seam shape

8-Mar-16S.Movchan Straw manufacturing and QC7 Software: seam quality on-line control Each seam photo size is about 8x10 mm2 at zoom x16 and straw production speed of V=9 mm/sec. So we have some frame overlapping of neighbor Photos. File record – set of about 250.bmp photos File processing: - modes: - manual - auto (0.8 sec per frame) -good/bad seam alarm level: - typical is 0.05

8-Mar-16S.Movchan Straw manufacturing and QC8 Straw machine: conclusion Ready: Clean room: - (10-35) pc of dusts with size less than 0.5 μm per liter – OK! - room T and H monitoring Straw machine: - straw transportation mechanics: - forward speed – (4-22) mm/sec, nominal – 9 mm/sec - reverse speed – 22 mm/sec - ultrasonic generator reference frequency monitoring by scope - seam on-line QC by microscope In assembly: - tape pretension mechanics In fabrication: - tensile machine - storage box for serial straws (see talk of V.Elsha) - straw boxes depository (see talk of V.Elsha)

8-Mar-16S.Movchan Straw manufacturing and QC9 Straw machine: conclusion Re-design started: - anvil - “rollers” for transfer tape to round shape Straw long term storage: 3 options of “nipples” proposed Design: Set up for straw filling by gas at dP=1.2 bar Checker for 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.

8-Mar-16S.Movchan Straw manufacturing and QC10 Spare

8-Mar-16S.Movchan Straw manufacturing and QC11 Atlas label Proposal for NA62 straw label: 62TSJIN

8-Mar-16S.Movchan Straw manufacturing and QC12 Straw labeling: label glue to straw chosen size: 10x30 mm

8-Mar-16S.Movchan Straw manufacturing and QC13 Straw labeling: conclusion Straw labeling procedure is proposed: - label code - 62TSJIN (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