S.Movchan Straw manufacturing and QC Dubna NA62 straw machines status comparison of 2 machines and status plans Presented by S.Movchan 2-Jun-18 S.Movchan Straw manufacturing and QC

Common view NEW machine Continuous straw fabrication Straw fabrication one by one (machine in operation) 2-Jun-18 S.Movchan Straw manufacturing and QC 2

S.Movchan Straw manufacturing and QC Ultrasonic equipment NEW F=39 kHz F=28 kHz 2-Jun-18 S.Movchan Straw manufacturing and QC 3

S.Movchan Straw manufacturing and QC Sonotrode + anvil 2-Jun-18 S.Movchan Straw manufacturing and QC 4

Operation mode stabilization Check F=(39300±100) Hz + cooling automatic 2-Jun-18 S.Movchan Straw manufacturing and QC 5

S.Movchan Straw manufacturing and QC Tape pretension 2-Jun-18 S.Movchan Straw manufacturing and QC 6

S.Movchan Straw manufacturing and QC Round shape formation by 4 rollers 2-Jun-18 S.Movchan Straw manufacturing and QC 7

S.Movchan Straw manufacturing and QC Straw transportation continuous by shuttle 2-Jun-18 S.Movchan Straw manufacturing and QC 8

Dust remover from anvil by flow of air inside straw: NO flow of air Will be done by: anvil from plastic … + oil less compressor 2-Jun-18 S.Movchan Straw manufacturing and QC 9

S.Movchan Straw manufacturing and QC Straw cutter Straw cut by operator Automatic cut 2-Jun-18 S.Movchan Straw manufacturing and QC 10

Straw remove by operator Straw remover Straw remove by operator automatic 2-Jun-18 S.Movchan Straw manufacturing and QC 11

S.Movchan Straw manufacturing and QC Main controller All operations to do by operator 2-Jun-18 S.Movchan Straw manufacturing and QC 12

Straw seam quality control Will be done the same way 2-Jun-18 S.Movchan Straw manufacturing and QC 13

O-ring sample tensile test Seam quality control O-ring sample tensile test The same Visual check 2-Jun-18 S.Movchan Straw manufacturing and QC 14

Straw bar code + DB The same NA62 straw label: NA62TASTDU003525 NA62 – NA62 experiment TA – Tracker ST - straw DU– JINR, Dubna, Russia SE – Sefar, Swiss 003525 – straw serial # (000001-999999) The same 2-Jun-18 S.Movchan Straw manufacturing and QC 15

S.Movchan Straw manufacturing and QC Plans 1000 straws can be fabricated with “old” straw machine – July-August (urgently needed tape from CERN) NEW straw machine: Tuning – July Tests and improvements - August (add on-line monitoring) Machine certification - end of September - pre-production series: N=100 pc, end of August (1-2 days) - send to CERN – 3 weeks - tests a lot of straws at CERN – 2 weeks - approval Start of straw fabrication – October ? 2-Jun-18 S.Movchan Straw manufacturing and QC 16

Dubna straw mass production & parameters for 806 straws 2-Jun-18 S.Movchan Straw manufacturing and QC 17

Mass-production of 806 straws 2-Jun-18 S.Movchan Straw manufacturing and QC 18

Straw machine parameters after sonotrode reparation: (for straws with serial # ≥180) clean room: T=+(21±1) degree, H=(70±5)% some straw machine parameters: sonotrode angle: about 20 degree anvil diameter: 9.73 mm fixture diameter: 9.90 mm rollers position: right roller – 42/5 mm, left roller – 45/4 mm, gap – 18 mm dust removing from anvil: ON straw welding parameters: ultrasonic generator: clock F=(39750±50) Hz, P = (60÷100) a.u. => about 60% sonotrode head temperature: (27±1) degree (cooling ON) ultrasonic head pressure to tape: 210 g spool pretension: (150-200) g tape friction: (300÷400) g manufacture speed: 7 mm/sec 2-Jun-18 S.Movchan Straw manufacturing and QC 19

S.Movchan Straw manufacturing and QC 806 straws Tapes number Straw tubes A1-9 58 A1-11 73 A1-17 62 A1-10 84 A1-12 77 A1-8 93 A1-18 96 A1-4 98 A1-2 (300 m) 100 A1-7 (180 m) 65 806 ~100 straws/spool 2-Jun-18 S.Movchan Straw manufacturing and QC 20

S.Movchan Straw manufacturing and QC 806 straws BLUE – straw start RED – straw end Each bin=25 straws 2-Jun-18 S.Movchan Straw manufacturing and QC 21

S.Movchan Straw manufacturing and QC 806 straws Min = 1 mm BLUE – straw start RED – straw end 2-Jun-18 S.Movchan Straw manufacturing and QC 22

806 straws: visible track width (track from ultrasonic head on straw) BLUE – straw start RED – straw end W av = 0.725 mm 2-Jun-18 S.Movchan Straw manufacturing and QC 23

S.Movchan Straw manufacturing and QC 806 straws R av = 61.8 Ohm (L=2600 mm) 2-Jun-18 S.Movchan Straw manufacturing and QC 24

S.Movchan Straw manufacturing and QC 806 straws Straws rejection (out of parameter specification): diameter out of specification D=(9.75-9.80) mm – ~ 0.4% ( 3 straws) seam width less than W=0.4 mm – ~ 0.4% ( 3 straws) elongation less than 1 mm – ~ 2.5% (20 straws) ~ 3.3% (26 straws) 2-Jun-18 S.Movchan Straw manufacturing and QC 25

S.Movchan Straw manufacturing and QC Conclusion 806 straws were manufactured (February-April 2011): ~ 20 straws/shift ~ 100 straws per spool (L=300 m). Efficiency of mylar tape used is about 90% Straw parameters: - diameter Dav = 9.78 mm - sample elongation dLav= 7.0 mm (o-ring 5 mm width tensile test) - visible ultrasonic track width Wav=0.725 mm - resistance Rav=61.8 Ohm (L=2600 mm) Straws rejection (out of parameter specification): ~ 3.3% (26 straws) Dubna straw quality is adequate to NA62 requirements 2-Jun-18 S.Movchan Straw manufacturing and QC 26

S.Movchan Straw manufacturing and QC aaa 2-Jun-18 S.Movchan Straw manufacturing and QC 27