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Jigs drawing now online and ready for review: TCP : D1002140 ERM : D1002201 BS/FM : D1002147

NOTES FOR DISCUSSION AT DESIGN MEETING (26/10/10). Jigs drawing now online and ready for review: TCP : D1002140 ERM : D1002201 BS/FM : D1002147 FOR THIS MEETING: QUESTIONS REGARDING BS/FM JIG DESIGN: :

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Jigs drawing now online and ready for review: TCP : D1002140 ERM : D1002201 BS/FM : D1002147

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  1. NOTES FOR DISCUSSION AT DESIGN MEETING (26/10/10) • Jigs drawing now online and ready for review: • TCP: D1002140 • ERM: D1002201 • BS/FM: D1002147 • FOR THIS MEETING: QUESTIONS REGARDING BS/FM JIG DESIGN:: • We are proposing one holder for both prisms (shown in slides 2-5), with their respective prism positions set in the holder before bonding. • 1. Confirm respective prism position (as in D1000576 & D0901076) • main sapphire prism (D080765) coincident with COM • secondary prism (D0902368) position – confirm respective angle…..see slides to follow (especially slide 5) 2. V-blocks: what is the preferred approach • Modify existing V-blocks at Hanford [D1001685 V-block Assembly (2 off)] (slide 6 to clarify issues) • Are there any specific requirements for a BS/FM V-block (i.e. is there something already in use? • Are there special clamping requirements?

  2. BS/FM jig: basic views, simplified design compared with TCP/ERM (alignment guides removed)

  3. Prototype holder (made from POM) and mock prisms X X X LIP (R185mm) CONTACTS WITH MASS Only 2 pins for secondary prism

  4. Alignment onto mass, extra clearance to access screws Reference the fiducial line on mass with straight edge on jig itself Extra clearance Round nosed spring plunger (both sides)

  5. Confirm respective prism position: (1) or (2) or other? 2 1 From D0901076-v3

  6. Existing v-block: modifications required (view from below) Increase clearance Add supports/barriers Remove material

  7. Existing v-block: support surfaces Increase surface contact

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