1. 18-Sep-15S.Movchan Straw manufacturing and QC1 Remove metallization from tape by laser. Part 2 laser mode optimization for Hostaphane RNK 2600 samples for Molinex 406 (for laser optimal mode) Hostaphane RNK 4600: spool #17 and spool #18 conclusion Presented by S.Movchan

2. 18-Sep-15S.Movchan Straw manufacturing and QC2 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

3. 18-Sep-15S.Movchan Straw manufacturing and QC 3 Laser power: W=20%W=30%W=40% P=20%, 40 kHz, beam scan speed -200 mm/sec, 20 lines/mm Zoom x 200

4. 18-Sep-15S.Movchan Straw manufacturing and QC4 Laser pulses frequency: P=20%, 20 kHz, beam scan speed -200 mm/sec, 20 lines/mm 20 kHz40 kHz Zoom x 200

5. 18-Sep-15S.Movchan Straw manufacturing and QC5 Laser beam lines per mm: 20 lines/mm40 lines/mm60 lines/mm P=20%, 20 kHz, beam scan speed -200 mm/sec, 20 lines/mm Zoom x 200

6. 18-Sep-15S.Movchan Straw manufacturing and QC6 Laser beam scan speed: P=20%, 20 kHz, beam scan speed -200 mm/sec, 20 lines/mm 200 mm/sec600 mm/sec 1000 mm/sec 400 mm/sec Zoom x 200

7. 18-Sep-15S.Movchan Straw manufacturing and QC7 RNK 2600, extra power: (zoom x200) Po: W=30%, 40 kHz, beam scan speed -200 mm/sec 40 lines per mm 60 lines per mm

8. 18-Sep-15S.Movchan Straw manufacturing and QC8 Molinex 406, extra power: Zoom x 200

9. 18-Sep-15S.Movchan Straw manufacturing and QC9 Laser optimal mode for non moving tape: W=30% Tape speed: 0 mm/sec 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 W=40% Zoom x 200

10. 18-Sep-15S.Movchan Straw manufacturing and QC10 RNK 2600, laser optimal mode + circle+: Scan line speed – 46 mm/sec Zoom x 200

11. 18-Sep-15S.Movchan Straw manufacturing and QC11 Molinex 406, laser optimal mode + circle: Scan line speed – 46 mm/sec Zoom x 200

12. 18-Sep-15S.Movchan Straw manufacturing and QC12 Laser optimal modes: 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 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

13. 18-Sep-15S.Movchan Straw manufacturing and QC13 Spool #17 (RNK 4600): remove metallization from both tape edges Tape edge: W=0.4 mm Tape width: W=31.4 mm Zoom x 200

14. 18-Sep-15S.Movchan Straw manufacturing and QC14 Spool #18 (RNK 4600) : remove metallization from one tape edge L=1.5 m Zoom x 200

15. 18-Sep-15S.Movchan Straw manufacturing and QC15 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 2 spools (20 meters) ready for manufacture test straws

16. 18-Sep-15S.Movchan Straw manufacturing and QC16 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

17. 18-Sep-15S.Movchan Straw manufacturing and QC17 Straw #3685: F=(6.0±0.5) kg dL= (11÷22) mm

18. 18-Sep-15S.Movchan Straw manufacturing and QC18 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