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Status of the active Divider production/certification. Roméo Bonnefoy and François Vazeille Tilecal Operation and Maintenance weekly meeting CERN (4 July 2013). Status. Production made by Proto Process (Evian, France). 350 active Dividers produced and delivered . - PowerPoint PPT Presentation
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Status ofthe active Divider production/certification
Roméo Bonnefoy and François VazeilleTilecal Operation and Maintenance weekly meeting
CERN (4 July 2013)
Status
Production made by Proto Process (Evian, France).¨ 350 active Dividers produced and delivered.¨ Certification made at Clermont-Ferrand and started - Operators: Roméo Bonnefoy, Fabrice Podlyski, Timothée Theveneaux-Pelzer.
- Many Dividers rejected (see next slides).¨ 50 certified Dividers and QC delivered at CERN yesterday.¨ Other Dividers will be delivered in several steps.
1
Certification and Quality Control sheet
Test Bench of batch of 10 Dividersat 1 kV
Tests of voltages:Nominal voltage sharing
Measures without currentPercentages/nominal without currentPercentages with current/without current
Tests of capacitors
Tests of 10 resistor
Test duration: 20 minutes (automatically)+ 5 minutes (10 ) + 10 minutes handling 2
QC resultsÞ A lot of Dividers are rejected,mainly at the level of the HV cable.
Diagnosis %
Electric arc on the cable 3
Too short HV cable (-1 cm) 61
Too much bended cable 45
Good Divider 21
¨ A given base can cumulate several defaults.¨ 79% of cables are not OK.
Next actions¨ A specialized Cie will redo the cables.¨ Proto Process will put them.¨ Clermont-Fd team will certify again.
3
+ Radiation tests: Hardware/Software ready Gammas (Argonne), Neutrons (France).