LHQ Coil 03 Winding and Curing Miao Yu, Steven Krave 05/23/2014.

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Presentation transcript:

LHQ Coil 03 Winding and Curing Miao Yu, Steven Krave 05/23/2014

Difference between HQ and LHQ Plasma coating Winding with binder Saddle replace after curing Winding tension Popped Strands HQ coil 15 No 20 or 25 lbs? HQ 03 coils YesNo 20 lbs first turn, and then 30 lbs Occasional LHQ coil 02 YesNoYes20 lbs first two turns, and then 30 lbs 12 cases LHQ coil 03 Yes 20 lbs first two turns, and then 30 lbs 0 2

Plasma Coating 3 HQ Coil 15 HQ 3 Coils and LHQ Coil 03

LHQ Coil 03 Paint Binder and Cure the End 4

LHQ Coil 03 Saddle Replace after Curing 5

LHQ Coil 03 Electrical Measurement No short to ground/coil parts found 6 LHQ Coil 02LHQ Coil 03 Coil V V 20 Hz (mH) Hz kHz (mH) kHz Hz (mH) Hz

LHQ Coil 03 after Curing 7

Shipping to BNL 8

Summary LHQ Coil 03 was wind and cured successfully No popped strand After curing, no short between coil to ground or coil to parts. No turn to turn short Three discrepancy reports, however no damage to the cable. 1.Plasma coating cracks on one end part 2.Black mark on L1 cable (mid-plane turn) 3.Ramp turn insulation damage and repair 9

Plasma Coating Crack 10 On IL LE spacer 2

Marks on L1 cable insulation 11

L1 after curing 12 Only the insulation was damaged Replaced by wrapping 3 mil E-glass tape 48% overlap