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Minutes

Created by Main.MirkoPojer on 2007-05-25 - 21:28

The day was fully devoted to perform tests on D2.

The following tests have been executed on D2 (MANUAL execution, due to change in procedure):

PIC2 (SEQUENCER execution); test successful;
PLI1: ramp to 350 A with 10 A/s ramp rate, we stayed on the plateau 4 min and then provoked a FPA; test successful;
PLI2: ramp to 350 A with 10 A/s ramp rate, then ramp to 1000 A with 10 A/s, and quench driven by QPS, generating an artificial quench signal from one current lead detector; the test was successful;
PNO: during the first attempt to ramp to 3000 A, the power converter went to ‘faults’ and produced a FPA when reaching 1008 A; investigations of PO showed that a hardware limitation was present. The second attempt was successful:
- Ramp to 350 A with 10 A/s ramp rate;
- Continue ramping to 3000 A; plateau of 4 min;
- Continue ramping to 6000 A (nominal current); plateau of 30 min to check voltage drift;
- Provoked quench at nominal current.

Continue powering Q4 and D2
Continue powering the correctors (4 circuits have already passed the first 2 steps, three more are available).
Possible powering of the whole matching section.
Powering of the arc 60 A orbit correctors, according to humidity conditions.

Continue installation of plastic bags on DFBAN and DFBMH.
Check the status of condensation of the 13kA leads of DFBAO which have copper laminations and no plastic bags; check the status of the 6kA lead of DFBMA which has copper laminations and no plastic bags.
Installation of ventilators on the 60 A orbit correctors leads.