HQ & LHQ End Parts Miao Yu Fermilab 08/27/12. HQ parts All the spacers are arriving within a week. 2.

HQ & LHQ End Parts

Miao Yu

Fermilab

08/27/12

2

HQ parts

All the spacers are arriving within a week.

3

HQ L1 RE Key (Pole)

Nominal thickness: 14.714 mm (0.5793 inch)Measure: 0.579 inch ~ 0.581 inch

4

Saddle

• Grind by hand due to the late awareness• Not satisfied• Our techs will buff the edges (20 min/part)

~14.0 mm vs. 15.022 mm~0.5 mm unsupported strands during w/c/r

5

Spacer

The spacers were fabricated after the awareness.

6

Plasma CoatingVendor: White Engineering, PAA100 coating passes the curing, reaction and thermal cycle

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Thickness measurement

• 5 random points on OD, BEND and side surfaces• Fisher dual scope

0 2 4 6 8 10 122

3

4

5

6

7

8

9

10

OD surface Coa

ting

Thi

ckne

ss(m

il)

0.5 1 1.5 2 2.5 3 3.5 4 4.52

3

4

5

6

7

8

9

Bend surface

Coa

ting

Thi

ckne

ss(m

il)

0 1 2 35

6

7

8

9

Side surface

Coa

ting

Thi

ckne

ss(m

il)

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Thickness measurement

• 5 random points on the coating surface

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Quotation 1

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

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Quotation 2

• Coat manually• +/- 3mil tolerance• Response: fast• Price: low• Delivery: fast

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Quotation 3

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

12

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