Stave envelopes from stave mounting and insertions point

Stave envelopes (from stave mounting and insertion’s point of view) Stephanie Yang (Oxford) WP 4 meeting at Liverpool University, 13 th November 2014

Stave envelope (currently assumed 0 overlap distance at 1 Ge. V tracks) Change LOI radii to fit 0 mm overlap for 2&4 -layer Active area width assumed: 95. 36 mm (tilt angle at 10 degree) SSct. Brl. Layer #0 SSct. Brl. Layer #1 SSct. Brl. Layer #2 SSct. Brl. Layer #3 SSct. Brl. Layer #5 Radius mm 405 519 631 796 1000 number of stave per layer 2&3 overlap mm layer 1&4 overlap mm Layer 2&4 overlap mm Layer 1&3 overlap mm 28 2. 584 -1. 272 -0. 079 1. 345 36 2. 718 -1. 68 -0. 062 1. 061 44 2. 953 -1. 977 0. 006 0. 935 56 3. 33 -2. 402 0. 078 0. 818 72 4. 849 -1. 932 1. 146 1. 733 ID parameters as per LOI Active area width assumed: 95. 36 mm Tilt angle at 10 deg. Calculated overlap distance at 1 Ge. V tracks Radius mm number of stave per layer 2&3 overlap layer 1&4 overlap mm Layer 2&4 overlap mm Layer 1&3 overlap mm SSct. Brl. Layer #0 405 28 2. 584 -1. 272 -0. 079 1. 345 SSct. Brl. Layer #1 519 36 2. 718 -1. 68 -0. 062 1. 061 SSct. Brl. Layer #2 631 44 2. 953 -1. 977 0. 006 0. 935 SSct. Brl. Layer #3 762 56 7. 363 1. 749 4. 17 4. 909 SSct. Brl. Layer #4 862 (stub layer) 64 8. 006 1. 893 4. 607 5. 26 SSct. Brl. Layer #5 1000 72 4. 849 -1. 932 1. 146 1. 733 Locking mechanical geometry has to change to fit into this envelop as a consequence

Design parameters for new locking point 3 Need to have stiffer joint to avoid local bending of C -channel 15 mm Space envelope for insertion tool withdrawal Consequence of change: 1 - Stay clear from wire bonding process is 15 mm (from centre line of the stave) ₋ Locking point needs to be shortened 2 - 0 mm overlap at 1 Ge. V tracks ----- ₋ Locking bracket base radius change - Tilting angle at 10 degree, - Active area of 95 mm - Stave space of 15 mm

Revised locking mechanism and the insertion tooling stay clear from the new stave envelope Barrel 5 R=1000 mm Barrel 4 R=796 mm Barrel 3 R=631 mm Barrel 2 R=519 mm Barrel 1 R=405 mm

Current Compare to LOI numbers, layer #4 radius is 34 mm bigger on the current set. Is the current set of ID parameters compatible with physics? Need to confirm. . Before LOI Barrel 5 R=1000 mm Barrel 5 R=967 mm Barrel 5 R=1000 mm Barrel 4 R=796 mm Barrel 4 R=765 mm Barrel 4 R=762 mm Barrel 3 R=631 mm Barrel 3 R=609 mm Barrel 3 R=631 mm Barrel 2 R=519 mm Barrel 2 R=502 mm Barrel 2 R=519 mm Barrel 1 R=405 mm Barrel 1 R=393 mm Barrel 1 R=405 mm