S.Movchan Straw manufacturing and QC Straw machine status straw fabrication option 1: removing metallization from tape edges by laser laser mode optimization straw #3685 - results conclusion straw fabrication option 2: moving anvil straw #3675 - results straws storage plans Presented by S.Movchan 19-Jun-18 S.Movchan Straw manufacturing and QC

Laser mode optimization for Hostaphane RNK 2600 Goal of optimization: Remove metallization and to do min PET irradiation Laser graver parameters: laser power laser pulses frequency lines per mm laser beam scan speed Optimization to do for stopped tape (speed v=0 mm/sec) Total: 21 samples 19-Jun-18 S.Movchan Straw manufacturing and QC 2

S.Movchan Straw manufacturing and QC Laser optimal modes: Non moving tape Summary: Power: W=(30-40)% Frequency: F=40 kHz Beam speed: (600-1000) mm/sec Beam focus: focused (D=50 µm) Lines/mm: 40 Scan type: by line Tape speed: 0 mm/sec Manufacture speed: (10-46) mm/sec Moving tape Summary: Power: W=40% Frequency: F=40 kHz Beam speed: 6000 mm/sec Beam non focus: + 2 mm Scan type: by circle with D=0.4 mm Tape speed: 46 mm/sec Max manufacture speed: 46 mm/sec 19-Jun-18 S.Movchan Straw manufacturing and QC 3

S.Movchan Straw manufacturing and QC Conclusion Laser type: solid, wave ~ 1 µm Nominal laser power: P=20 W Beam effective diameter: about 60 µm (nominal - 50 µm) Optimal operation mode (minimum power for metal removing): Laser effective power: (4-5) W Laser beam frequency: F=40 kHz N laser pulses per point: 1 pulse Beam scan speed: ≤ 6000 mm/sec Beam non focus: + 2 mm Scan type: by circle with D=0.4 mm Line speed of metal removing: up to 50 mm/sec Laser beam melt base material (PET) at power about (8-10) W 19-Jun-18 S.Movchan Straw manufacturing and QC 4

Spool #17 (RNK 4600): remove metallization from both tape edges W=0.4 mm Tape width: W=31.4 mm Zoom x 200 19-Jun-18 S.Movchan Straw manufacturing and QC 5

Spool #18 (RNK 4600): remove metallization from one tape edge L=1.5 m L=1.5 m Zoom x 200 19-Jun-18 S.Movchan Straw manufacturing and QC 6

S.Movchan Straw manufacturing and QC New straws: Hostaphan RNK 4600, Cu+Au Straws fabricate for tests: # 3684 – no metallization on one tape side # 3685 – no metallization on both tape sides # 3686 – no metallization on both tape sides # 3687 – no metallization on both tape sides Straw #3684÷3687: F=300 gram + P=20 a.u. V=10 mm/sec 19-Jun-18 S.Movchan Straw manufacturing and QC 7

S.Movchan Straw manufacturing and QC F=(6.0±0.5) kg dL= (11÷22) mm 19-Jun-18 S.Movchan Straw manufacturing and QC 8

S.Movchan Straw manufacturing and QC Conclusion 2 types of test straws fabricated (from Hostaphan RNK 4600): - metallization removed from one tape edge (straw #3684) - metallization removed from both tape edges (straw # (3685-3687)) Straw tensile test results: Straw #3685: F=(6.0±0.5) kg dL=(11÷22) mm for old straws: F=(3.5-6) kg, dL=(1-10) mm, non stable results Gas leak tests – in progress 19-Jun-18 S.Movchan Straw manufacturing and QC 9

Straw #3675 fabricated with moving anvil: F=200 gram + P=50 a.u. V=10 mm/sec check seams by microscope: zoom x 200, transmit light 19-Jun-18 S.Movchan Straw manufacturing and QC 10

Dust accommodation on moving anvil 19-Jun-18 S.Movchan Straw manufacturing and QC 11

Straw #3675: F=(5-6) kg, dL=(5-19) mm Samples 13-32 were produce with moving anvil Samples 26-32: PET without metallization 19-Jun-18 S.Movchan Straw manufacturing and QC 12

S.Movchan Straw manufacturing and QC Conclusion Preliminary: - straw quality is good - additional investigations are needed 19-Jun-18 S.Movchan Straw manufacturing and QC 13

S.Movchan Straw manufacturing and QC Straws storage 19-Jun-18 S.Movchan Straw manufacturing and QC 14

Common view

2 gates for free straw access

Procedure:

Straws storage

Straws storage Max straw length 2600 mm Number of straws per set 35 pc Number of sets 96 Total number of straws 3360 pc max number of sets 144 max number of straws 5040 pc