Coil Measurements and Monitoring at CERN: Insights and Procedures
This document provides detailed information about the coil measurements and monitoring process conducted at CERN, focusing on the SQXF coil. It includes data on coil winding, mandrel angles, edge locations, accumulated errors, and packing after curing. The text also discusses electrical quality assurance procedures during winding, insulation testing, and post-curing tests. Key measurements, tools used, and planned actions are outlined. Susana Izquierdo Bermudez is prominently involved in these activities.
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P. Ferracin, S. Izquierdo Bermudez, J. Mazet, J. C. Perez. 05-05-2014 SQXF Coil Measurements CERN Joint LARP/HiLumi LHC Meeting (CM22) QXF Coil Workshop
Coil winding monitoring file We measure: Upper and lower edge of each conductor Winding tension Mandrel angle 2 Susana Izquierdo Bermudez
SQXF1: coil measurements Mandrel angle 50 Start LE Start RE End LE End RE 1 45 40 35 2 30 degrees 25 20 15 10 5 0 0 5 10 15 20 25 30 turn # Location of the lower edge 90.0 240 nominal measured 85.0 220 nominal measured 200 80.0 degrees 180 mm 75.0 160 70.0 140 65.0 120 60.0 100 0 5 10 15 20 25 0 5 10 15 20 25 turn # turn # 3 Nominal defined for the cable geometry after reaction Susana Izquierdo Bermudez
SQXF 1: coil measurements Error /turn lower edge location 1.5 Return Lead 1 0.5 mm 0 -0.5 -1 0 5 10 15 20 25 10 turns 5 turns 7 turns turn # Accumulated error lower edge location 1 5 Return Lead Return Lead 0.5 3 0 1 mm degrees -0.5 -1 -1 -3 -1.5 -2 -5 0 5 10 15 20 25 0 5 10 15 20 25 Turn # Turn # 4 Susana Izquierdo Bermudez
Coil packing after curing Measurements performed in SQXF1 IL Measurements not performed in SQXF1 IL will be done in SQXF2 (referencing holes done manually, so they cannot be compared to the CAD model) IR1 IR2 IR3 IC1 IC2 IC3 IC4 WEDGE LY WEDGE non LY POLE EXPECTED 72.6 -- -- 68 76.5 -- -- 993 1041.37 1045.85 MEASURED 72 125.8 185.6 67.5 75.4 119.1 147.1 993.2 1042.73 1046.46 DIFF 0.6 -- -- 0.5 1.1 -- -- 1.36 0.61 0.2 5 Susana Izquierdo Bermudez
Electrical QA During winding Insulation coil-ground and coil-spacers Tests After Curing (what we plan to do) Test Time [sec] Title Type Object Short description Tolerances Equipment condition Resistance measurement of oil Insulation of the coil to ground (tooling / spacer) RDC Resistance Coil 6A NA Ref coil +/- 3% A, B Coil to ground Insulation Coil 50 V 30 sec >1000 M C 100 Hz 1 KHz Inductance Inductance Coil Coil inductance test NA L[ref coil] +/- 2% F A DMM as KEITHLEY 2000 multimeter B Stabilized DC current supply as Agilent 6631B Equipment C MEGGER BM21 / MEGGER S1-1052 F LCR meter as HP 4263B LCR meter 6 Susana Izquierdo Bermudez
Electrical Test Equipment Electrical test Equipment DMM as KEITHLEY 2000 multimeter Stabilized DC current supply as Agilent 6631B MEGGER BM21 / MEGGER S1-1052 Oscilloscope as Tektronix TDS 3014 LCR Meter 879B BK Precision / equipment F LCR meter as HP 4263B LCR meter SEITZ Impulse tester EFACEC Heater discharge Power Supply Labview data transfert software Press of Young modulus Tektronix probe P6015A Connection cable and/or specific rack A B C D E F G H I J K L 8 Susana Izquierdo Bermudez
Electrical QA guidelines file 9 Susana Izquierdo Bermudez
