Apr 20, 2023 S.Movchan Straw manufacturing and QC 1

Dubna modules assembly status (October 14 2013)

Straw manufacture:• current serial number is # 6527• for CH2 M2 X-Y 900 straws are glued

• for CH4 M1 U-V 900 straws are ready • for CH4 M2 X-Y 776 straws are manufactured

CH2 M1 U-V status

CH2 M2 X-Y status

CH4 M1 U-V status

CH2 M1 U-V delivery to CERN

Presented by S.Movchan

Apr 20, 2023 S.Movchan Straw manufacturing and QC 2

Straws

900 straws for CH2 M2 X-Y (2-nd Dubna module) are glued:# (2990-3567) ~ 400 pc# (3568-4394) - 50 pc# (4395-4842) ~ 450pc

900 straws for CH4 M1 U-V (3-d Dubna module) are ready:# (4843-5750)

776 straws for CH4 M2 X-Y (4-th Dubna module) are manufactured:

# (5751-6527)

Apr 20, 2023 S.Movchan Straw manufacturing and QC 3

CH2 M1 U-V status

Apr 20, 2023 4

Dubna assembly site (LHEP, bld.217)CH2 M1 U-V

Module vacuum test:Leak ~ 500 mbar*cm3/min

finish of straw gluing (07/02/2013) Start – 28/09/2012

Quality controlby laser

Apr 20, 2023 S.Movchan Straw manufacturing and QC 5

Module removed from assembly tooling (June 2013)

Apr 20, 2023 S.Movchan Straw manufacturing and QC 6

CH2 M1 U-V: U-coordinate gas leak test

Leak:15 mBar/3 days at

P=1.4 Bar

Apr 20, 2023 S.Movchan Straw manufacturing and QC 7

CH2 M2 X-Y status

Apr 20, 2023 8

CH2 M2 X-Y installed for assembly (July 16 2013)

Microworld physics, Gomel, 2013

Apr 20, 2023 S.Movchan Straw manufacturing and QC 9

CH2 M2 X-Y status: all straws glued(October 14 2013)

8 layers glued

Apr 20, 2023 10

CH2 M2 X-Y: straw pre-tension check

sensor

Microworld physics, Gomel, 2013

Example: Y, layer 1

F=(1.75-1.95) kG

Apr 20, 2023 11

CH2 M2 X-Y: straw position check

Microworld physics, Gomel, 2013 +/- 100 m

top

middle

bottom

Example: Y, layer 1

Apr 20, 2023 S.Movchan Straw manufacturing and QC 12

CH4 M1 U-V: vacuum test in progress

Apr 20, 2023 S.Movchan Straw manufacturing and QC 13

Preparation for module delivery to CERN:

Shocklog device and dumping pads

4 pc

Apr 20, 2023 S.Movchan Straw manufacturing and QC 14

CH2 M1 U-V delivery to CERN

4 safety bolts: frame max shift is limited dL = 10 mm

Apr 20, 2023 S.Movchan Straw manufacturing and QC 15

Shocklog

2 shocklog with 2 different thresholds will be used

Apr 20, 2023 S.Movchan Straw manufacturing and QC

Conclusion

Straw manufacture:• 900 straws are glued in the CH2 M2 X-Y• 900 straws are ready for CH4 M1 U-V• 776 straws are manufactured for CH4 M2 X-Y

CH2 M1 U-V: • straw gluing and wiring – done• final assembly – done• tests (HV, gas leak) – in progress• delivery to CERN – October 2013

CH2 M2 X-Y: • straw gluing – done• wiring – October 2013• final assembly – November 2013• tests (HV, gas leak) – December 2013• delivery to CERN – January 2014

“Straw 2” installation – Feb-March 2014

Apr 20, 2023 S.Movchan Straw manufacturing and QC 17