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VELO Module Transport Box – Preliminary Design –

VELO Module Transport Box – Preliminary Design –. Ray Mountain, Sheldon Stone, Lou Buda Syracuse University. Main Design Goal: to provide a strong box for transport, which is easy to handle and keeps the module safe. Secondary Intent:

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VELO Module Transport Box – Preliminary Design –

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  1. VELO Module Transport Box – Preliminary Design – Ray Mountain, Sheldon Stone, Lou Buda Syracuse University Main Design Goal: to provide a strong box for transport, which is easy to handle and keeps the module safe. Secondary Intent: to allow handling of the module by the frame as much as possible during testing stages subsequent to transport. R. Mountain, Syracuse University VELO Meeting, 14 Oct 2005 1

  2. DESIGN (1) FRAME: Bottom Al (25 mm), Sides+Top Al (19 mm) or SD Polycarbonate (25 mm). Held at corners by two screws and epoxy. 291 mm Clearances: 32 mm SIDE 28 mm TOP 24 mm F+B OK? 361 mm O-Rings: front + back, groove on frame, prob. Viton Attachment: Module attached by screws, or by clamping fixture. No real vibrational damping provided here… width 51 mm (frame only) Suggestion: rotating rod… HLR R. Mountain, Syracuse University VELO Meeting, 14 Oct 2005 2

  3. ATTACHMENT Module attached by screws to small plate (which is fixed to rotating cylinder) Module rotates out of plane of frame for installation and removal. VELO Module Small plate Rotating rod Comments? Frame Base Lock-down screws pin cylinder (both ends, front access) R. Mountain, Syracuse University VELO Meeting, 14 Oct 2005 3

  4. DESIGN (2) BACK COVER: SD Polycarbonate (12 mm). Free cover, dowels guide movement close to frame, screws attach it to frame, ~50 mm centers FINGERS SHOWN ARE BEHIND MODULE Suggestion: use flush captive screws – fine idea. Compliant fingers: restrict and dampen any vibrational movement (just touching substrate or have 1 mm clearance). Attached to back cover. Material TBD. Suggestion: add fingers below connector and modify others to contact hybrid on edges only. HLD R. Mountain, Syracuse University VELO Meeting, 14 Oct 2005 4

  5. DESIGN (3) FRONT COVER: SD Polycarbonate (12 mm). Free cover, dowels guide movement close to frame, screws attach it to frame, ~50 mm centers. * Antistatic spray will be applied to the exterior of the polycarbonate. Gas inlet and outlet: Valves (approximate shape) shown, closed during transport. Suggestion: move gas services to sides of box – fine with us. width 76 mm (w.covers) HLD R. Mountain, Syracuse University VELO Meeting, 14 Oct 2005 5

  6. DESIGN (4) OUTER COVER: SD Polycarbonate (6 mm), to protect gas valves from getting caught while handling Gone, if move gas services to sides HLD R. Mountain, Syracuse University VELO Meeting, 14 Oct 2005 6

  7. HANDLING (1) Scheme for handling during transport – “007” briefcase with 1 or 2 boxes per case Most of the vibrational damping in this design comes from the fill material: styrofoam, bubble-wrap, airbags, or a MIXTURE Expect low frequencies (<1 KHz) in airplane cabin, except for turbulence and landing => Check with UPS(?) Transport Box Transport Box Noise Spectrum <http://www.lord.com/Portals/_default/LordDocuments/root/technical_papers/LL-6505.pdf> R. Mountain, Syracuse University VELO Meeting, 14 Oct 2005 7

  8. HANDLING (2) Just an idea… Strong base for holding transport boxes -- Stack one or several boxes per base in the storage / staging / work areas, so does not tip over when mounting, setting up for tests, etc… Notches cut in transport box frame hold the boxes upright and rigid (could add stops on rail to fix its position) Transport Boxes Rail Base (fixed to table) R. Mountain, Syracuse University VELO Meeting, 14 Oct 2005 8

  9. HANDLING (3) One more… Handles? -- (of some design, maybe not this one) - Close to frame, - Detachable, - Something to grab (other than module itself), for picking up box, handling, mounting, etc… Transport Box Seems trivial but may be useful… R. Mountain, Syracuse University VELO Meeting, 14 Oct 2005 9

  10. SPECIFIC QUESTIONS • Is the overall size acceptable? Is the clearance from the VELO module to the frame acceptable for tooling, testing, metrology, etc.? • Are the materials acceptable? Is aluminum a problem for the vacuum tests? • So far seems OK for everyone • Which holes in the VELO module support can be used to attach the module to the base of the frame? • Use 7 mm OD clearance holes on L+R clamp-foot… • What is the weight of the module? The whole assembly should be kept relatively light for transport by hand (by air). • Shoot for 5 kg or so • Are the positions of the compliant fingers acceptable? • Vibration damping of module may not be completely accomplished by these fingers, especially if the goal is to cushion from instantaneous forces of over 100 g. • Is there a mechanical mock-up of the module itself that I could get, for prototyping? R. Mountain, Syracuse University VELO Meeting, 14 Oct 2005 10

  11. NEXT • Next iteration ― incorporate comments, post next iteration in ~1 week. If OK… • Production drawings ― cut 2D drawings • Prototype / First Box ― make & send to Liverpool • Incorporate comments on first box • Production of remaining (50-60) boxes R. Mountain, Syracuse University VELO Meeting, 14 Oct 2005 11

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