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

Dubna modules assembly status (March 31 2014)

Status of:

• CH2 M2 X-Y

• CH4 M1 U-V

• CH4 M1 X-Y

Shipment to CERN:

CH2 M2 X-Y + CH4 M1 U-V

Presented by S.Movchan

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

CH2 M2 X-Y status

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

Vacuum set up

3 support tubes per each corner

Central support tube

Apr 20, 2023 S.Movchan Straw manufacturing and QC 4

CH2 M2 X-Y frame leak to vacuum (July 2013)

Leak estimation for final time interval dT=(4200-5600) min:

dP=7.8-7.5 = 0.3 mBar dT= 5600 – 4200 = 1400 min Volume V=2.2x10**6 cm3

Leak: L = dP*V/dT = 0.3 mBar/1 * 2.2x10**6 cm3/1400 min ~ 0.5 cm3/min

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

CH2 M2 X-Y: final gas leak test finished (March 14 2014)

Gas leak results:

X-view

Temp.

Y-view

NO gas leak

Views pressure drop

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

CH4 M1 U-V status

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

CH4 M1 U-V: vacuum test(October 2013)

Leak < 0.1 cm3/min(requirement L<=0.8 cm3/min)

Apr 20, 2023 S.Movchan Straw manufacturing and QC 8

CH4 M1 U-V: final gas leak test finished (March 26 2014)

Gas leak results:

Views pressure drop

U-view

V-view

Temp.

NO gas leak

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

Dumping system installation: 2 options -> “blue frame” and “grey frame”

CH4 M1 U-VCH2 M2 X-Y

Apr 20, 2023 S.Movchan Straw manufacturing and QC 10

Shipment to CERN: CH2 M2 X-Y ready for transportation

dP= 425 mBar of Ar

Apr 20, 2023 S.Movchan Straw manufacturing and QC 11

Shipment to CERN: CH4 M1 U-V ready for transportation

dP= 402 mBar of Ar

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

Shock logs installation

CH4 M1 U-VCH2 M2 X-Y

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

Common view

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

Mercedes Atego 1218

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

Loading time and shocklog check

Apr 20, 2023 S.Movchan Straw manufacturing and QC 16

go to CERN …(March 31 2014 13:10)

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

CH4 M2 X-Y

Apr 20, 2023 S.Movchan Straw manufacturing and QC 18

CH4 M2 X-Y: vacuum test done (January 27 2014)

Leak < 0.1 cm3/min(requirement L<=0.8 cm3/min)

Apr 20, 2023 S.Movchan Straw manufacturing and QC 19

CH4 M2 X-Y installed for assembly (March 11 2014)

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

Glued layers:first - March 14second - March 213-d - March 29

CH4 M2 X-Y status: X-view

Apr 20, 2023 S.Movchan Straw manufacturing and QC 21

Common view

BOX for

CH4 M2 X-Y

CH4 M1 U-V

READY for shipment

CH2 M2 X-Y

READYfor shipment

Apr 20, 2023 S.Movchan Straw manufacturing and QC 22

CH4 M2 X-Y: schedule

Straw gluing – March-May 2014

Straw cutting + gas leak test – May 2014

Wiring + HV test – end of May 2014

Gas manifold installation – May-June 2014

Final gas leak test – June 2014

Ready for shipment – end of June 2014

Delivery to CERN - beginning of July 2014