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Powering Tests Sector 7-8 - Report Monday 25.06.2007

Test Report of Monday 25.06.2007

• RB.A78
  • Provisional correction of the detection threshold of the bus-bar quench detector.
  • TF measurement - Test OK after some corrections done in one QPS crate
  • RB converter connected to the circuit
  • Circuit ramped up to 350A with the bus-bar quench detection threshold increased. Loop properly closed!
  • Some modifications needed in the QPS bus-bar quench detector - Circuit ramped up again to 350A with QPS in operational conditions!!
  • PCC Circuit Config - TEST OK!

• RQF.A78 (6500A)
  • PLI3.2 - Energy extraction discharge - Test OK
  • PLI3.3 - Quench heater discharge on 12L8 SSS - Test OK

• 600A Correctors
  • PCS tests on the circuits: RQT12.L8B1, RQS.L8B1, RCO.A78B1 - Going on

• DFBMA refilled and cooled down in a couple of hours

• 60A Closed Orbit Correctors: PCC in 16 converters

Test Plan for Tuesday 26.06.2007

• RB.A78
  • PIC2
  • PLI1 (760A)
    • PLI1.1 - Current cycle
    • PLI1.2 - Energy extraction discharge (quench to a current lead)
    • PLI1.3 - Powering Failure from PC
    • PLI1.4 - FPA from PIC
    • PLI1.5 - Quench heater discharge on LBBRG.10L8 (magnet 1030)
  • PLI2 (2000A)
    • PLI2.1 - Current cycle
    • PLI2.2 - Energy extraction discharge (quench to a current lead)
    • PLI2.2b - SPA from PIC
    • PLI2.3 - Quench heater discharge on LBBRA.13L8 (magnet 3002) and LBARA.13R7 (magnet 1054)

• Matching Section: Powered to the same conditions of the triple quench on 31/06 once the quench detection threshold has been increased to operational values.

• 60A closed orbit correctors: PCC and P2N

• RQF.A78 or RQD.A78
  • Type tests
  • Quench campaign:
    • RQF and RQD ramped up together to 6500A. Quench TWO quadrupoles in different cryogenic cells simmultaneously.
    • RQF and RQD ramped up together to 6500A. Quench FOUR quadrupoles in different cryogenic cells simmultaneously.

• 600A correctors
  • Study and debugging of the quench detectors going on.