The HiLumi LHC Design Study (a sub-system of HL-LHC) is co-funded by the European Commission within the Framework Programme 7 Capacities Specific Programme, Grant Agreement QXF Coil Cross-section Concept with Layers Miao Yu Fermilab02/14/2013

125 µm (5 mil) S2 glass 75 µm (3 mil ) Polyimide trace 125 µm (5 mil) S2 glass 125 µm (5 mil) Polyimide trace/ 250 µm (10 mil) MYLAR 125 µm (5 mil) MYLAR 125 µm (5 mil) boron free G10 Midplane 500 µm (20 mil) S2 glass Impregnation X-section for QXF R&D Model 2

3 Polyimide trace (From Dan Cheng, LBNL) In HQ, In HQ, 1. Before Coil 11: 62 µm trace ( 1. Before Coil 11: 62 µm trace (25 µm Polyimide, 12 µm adhesive layer and 25 µm Stainless steel trace) 2. µm 2. Coil 11-14: add 25 µm Kapton layer, total thickness 87 µm 3. µm 3. From Coil 15: add 50 µm Kapton, total thickness 112 µm In stock, we have 87 µm trace ( In stock, we have 87 µm trace (50 µm Polyimide, 12 µm adhesive layer and 25 µm Stainless steel trace)

Impregnation X-section for QXF Production µm (5 mil) S2 glass 75 µm (3 mil ) MYLAR 125 µm (5 mil) S2 glass 125 µm (5 mil) Polyimide trace/ 250 µm (10 mil) MYLAR 125 µm (5 mil) MYLAR 125 µm (5 mil) boron free G10 Midplane 500 µm (20 mil) S2 glass

LQ Impregnation OD Preparation 5

LQ Impregnation ID Preparation 6

LQ after Impregnation 7