HQ & LHQ End Parts Miao Yu Fermilab 08/27/12

HQ parts All the spacers are arriving within a week. 2

HQ L1 RE Key (Pole) 3 Nominal thickness: mm ( inch) Measure: inch ~ inch

Saddle Grind by hand due to the late awareness Not satisfied Our techs will buff the edges (20 min/part) ~14.0 mm vs mm ~0.5 mm unsupported strands during w/c/r 4

Spacer The spacers were fabricated after the awareness. 5

Plasma Coating 6 Vendor: White Engineering, PA A100 coating passes the curing, reaction and thermal cycle

Thickness measurement 5 random points on OD, BEND and side surfaces Fisher dual scope 7

Thickness measurement 5 random points on the coating surface 8

Quotation 1 9 Equipped with robotic head +/- 1mil on priority surface +/-3mil on curved surface Response: very slow Price: high Delivery: slow

Quotation 2 10 Coat manually +/- 3mil tolerance Response: fast Price: low Delivery: fast

Quotation 3 11 Equipped with robotic head +/- 1mil on regular surface +/-3mil on BEND surface Response: fast Price: low Deliver: fast

Plan 6 middle pole pieces (one LHQ coil) to each vendor Verify the thickness Measure the coating strength as the parts received and after curing, reaction and thermal cycles. (no impregnation test) Vendor selection 12