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Tunnel Orientation for CMS ZDC Positions Acceptance

This document outlines the specifications and locations of TANs within the LHC arc tunnel for CMS ZDC acceptance. It details the slot dimensions, TAN installation in LSS zones, and horizontal shifts due to tilt. Includes information on ZDC beam pipe, beam location, and TAN assembly.

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Tunnel Orientation for CMS ZDC Positions Acceptance

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  1. Orientation to the TunnelDuane Ingram

  2. CMS ZDC Positions Acceptance: θ ≤ 400 μrad η ≥ 8.5 140 m IP 140 m

  3. IP

  4. IP

  5. IP

  6. LHC arc Slot IP TAN situation • 4 TANs are installed in IP1L&R, IP5L&R • Each TAN is equipped with 1 slot corresponding to 10 Copper bars • TANs are situated in LSS zones with ~0,7 degree slope and 0,4 degrees tilt • Overall measured dimension of the slot is 998x94,9x605mm (lxwxh) (inf. to design) • Tilt combined with height of the slot (605mm) gives an horizontal shift of 7,5mm in parallel to the machine axis and ~4mm perpendicular to this Caterina Bertone EN-HE – 19 February 2009

  7. “Spectators” Zero Degree Calorimetry for CMS ZDC ZDC Quartz Fibers Beam pipe splits 140m from IP ZDC LOCATION BEAMS

  8. ZDC Slot Details of TAN ZDC SLOT TAN – Neutral Particle Absorber IP 96 mm Marble Face To IP TAN Partially Assembled

  9. Mini-crane – face - pt5 Mire geo CMS ZDC Caterina Bertone EN-HE – 19 February 2009

  10. IP

  11. CMS Bypass IP

  12. chicane chicane chicane TAN location and access Surface access Surface access Caterina Bertone EN-HE – 19 February 2009

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