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NA62 SILICON PIXELS DETECTOR. COOLING VESSEL PROTOTYPE STATUS REPORT. MATERIALS. MATERIALS. MAKING THE PARTS. THE ALL PARTS MADE BY FERRARA WORKSHOP. TESTS @ ROOM TEMPERATURE. THE FOLLOWING TESTS HAVE BEEN DONE : KAPTON CREEP KAPTON FAILURE PRESSURE

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na62 silicon pixels detector

NA62 SILICON PIXELS DETECTOR

COOLING VESSEL PROTOTYPE

STATUS REPORT

Vittore Carassiti - INFN FE

slide2

MATERIALS

Vittore Carassiti - INFN FE

slide3

MATERIALS

Vittore Carassiti - INFN FE

slide4

MAKING THE PARTS

THE ALL PARTS MADE BY

FERRARA WORKSHOP

Vittore Carassiti - INFN FE

slide5

TESTS @ ROOM TEMPERATURE

  • THE FOLLOWING TESTS HAVE BEEN DONE :
  • KAPTON CREEP
  • KAPTON FAILURE PRESSURE
  • QUALITY OF THE JOINT KAPTON-RESIN-ALUMINUM

Vittore Carassiti - INFN FE

slide6

BONDING ALUMINUM FRAME & KAPTON FOIL

  • PREPARATION OF THE JOINTS :
  • ALUMINUM JOINT ABRADED AND DEGREASED
  • KAPTON JOINT LIGHTLY ABRADED AND DEGREASED

CURING TIME : 16 h @ 40°C

Vittore Carassiti - INFN FE

slide7

BONDING ALUMINUM FRAME & KAPTON FOIL

Vittore Carassiti - INFN FE

slide8

KAPTON CREEP TEST

WorkingpressureWp = 1 bar

Test pressureTp = 2Wp = 2 bar

AFTER TWO WEEKS @ Tp NO EVIDENCE

OF CREEP

SMALL RESIDUAL DEFORMATION AFTER

VENTING

Vittore Carassiti - INFN FE

slide9

KAPTON FAILURE PRESSURE

STRESS ON THE VESSEL

BOUNDARY CONDITIONS

Pi = 0,1 Mpa (innerpressure)

Pe = 0 (outherpressure)

s = 5E-05 m (wallthickness)

Di = 47E-03 m (innerdiameter)

FAILURE PRESSURE CALCULATION

EQUIVALENT TENSILE STRESS

(Guestcriterion)

Vittore Carassiti - INFN FE

slide10

KAPTON FAILURE PRESSURE TEST

FAILURE PRESSURE = 5 bar ACCORDING TO CALCULATION

Vittore Carassiti - INFN FE

slide11

JOINT KAPTON-RESIN-ALUMINUM

LENGTH OF THE OVERLAP CALCULATION

Vittore Carassiti - INFN FE

slide12

JOINT KAPTON-RESIN-ALUMINUM

THE JOINT AFTER KAPTON FAILURE

Vittore Carassiti - INFN FE

slide13

COOLING VESSEL

THE COOLING VESSEL @ 1,5 bar

Vittore Carassiti - INFN FE

slide14

THE POWER OF THE DETECTOR

3 THERMOCOUPLES K TYPE

(from -50°C to +250°C)

16 RESISTORS 222 Ω – 2W

Vittore Carassiti - INFN FE

slide15

THE ASSEMBLY

Vittore Carassiti - INFN FE

slide16

NEXT STEP : CECKING THE COOLING IN VACUUM

COOLING VESSEL

NITROGEN IN-OUT

ELECTRICAL CONNECTIONS & POWER SUPPLY

DN 160 CF FLANGE

Vittore Carassiti - INFN FE

slide17

ACKNOLEDGEMENTS

SPECIAL THANKS TO :

  • COTTA ANGELO (electronic service)
  • EVANGELISTI FEDERICO (mechanical service)
  • LANDI LUCA (mechanical service)
  • PADOAN CLAUDIO (electronic service)
  • STATERA MARCO (mechanical service)

Vittore Carassiti - INFN FE