1. Re-commissioning campaign
P5 Warm Magnets
re-commissioning
and SCT
Marco Zanetti

2. P5 WM Tests 1 Circuit (RD1.LR5), 6+6 magnets, PC on surface
ElQA (Pierre T.): found anomalous low resistance (150 kW vs 4 MW expected)
Water conductivity measured to be ok (P5L=0.1 mS/cm, P5R=0.5 mS/cm)
Increased current to ground due to FMCM voltage dividers (see next slide)
WIC-Magnets, WIC-PC (Pierre D.) successful
PC tests (Hugues)
Issue with 18kV cell (EMD213/5E) feeding the PC (the PC remained ON). Fixed on Wednesday morning
Heat run ongoing, due to finish Friday morning

3. FMCM and ElQA (Markus/Hugues)
Voltage taps at the beginning and at the end of the circuit are connected to a voltage divider feeding the FCMC
Not an issue for the PC
During ElQA of the circuits where the voltage taps are directly connected to the magnets, the taps have to be disconnected.
6 circuits of these kinds in the whole LHC: RD1.LR1, RD1.LR5, RBXWTV.L2, RBXWTV.R2, RMSD.LR6B1 and RMSD.LR6B2

4. Schedule w21 w22 w23 w24 w25 w26 w27 w28 w29 w30 P1 WM P2 TI2 P3 P4
w21
w22
w23
w24
w25
w26
w27
w28
w29
w30 P1 WM P2
TI2 P3 P4
SCT P5 P6 P7 P8

5. WM and Short Circuit Tests
SCT for circuits in U43:
WCC ready
Heat run on Thursday 5 June (whole day)
PIC:
Bouchons on PC side for IPQ/D
Need to discuss what to do for RB and RQD/F
Safety:
Balisage as for P6
(de)condamnation taken care by EPC and Gerard
WM test in P4 (WIC and PC) from Monday to Wednesday week 22
TI2 WM tests in parallel with SCT in P4
filters installation ok?