• All 9 staves met the requirements and have been accepted: 5 have been sent to CPPM for parylene coating, the last four will be shipped during this week.

 

  • The stave 4005 checked to a 16 bar crash test. The Al tube alone was already @16bar tested.
    • Test Procedure:
      • GEOMETRY MEASUREMENTS 
      • THERMAL MEASUREMENTS UNDER 80.5 W, WITH COOLING WATER FLOW
      • 20 CYCLES 0-16 bar (RAMPED PRESSURE RISE)
      • 2 HRS @ 16 bar CONSTANT PRESSURE
      • 30 CYCLES (SUDDEN PRESSURE RISE)
      • THERMAL MEASUREMENTS UNDER 80.5 W, WITH COOLING WATER FLOW
      • GEOMETRY MEASUREMENTS
  • Results
    • NO EXTERNAL EVIDENCE OF DAMAGE
    • SIMILAR THERMAL BEHAVIOUR (global Shift can be due to roughness of the measurement setup), SLIGHT TEMPERATURE INCREASE, MORE SIGNIFICANT IN A WELL CONCENTRATED AREA (LOCAL DAMAGE?)
    • NO SIGNIFICANT CHANGE IN GEOMETRY

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