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Comprehensive Guide to Muon Filter Design and Installation for Seismic Stability

This document outlines critical aspects of muon filter design and installation, focusing on ensuring seismic stability. It details the fabrication of iron blocks sourced from WANF, their precise installation requirements, and the intricate tooling necessary for the task. The installation sequence is defined, beginning with the mounting of iron walls and concluding with the integration of additional structural elements. Planning considerations outline staffing, budget allocations, and preparation timelines essential for successful and secure muon filter implementation within the LHCb detector framework.

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Comprehensive Guide to Muon Filter Design and Installation for Seismic Stability

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  1. Muon Filter Design and Installation Outline: • Filter design and basic concept to ensure seismic stability • Filter Installation and the required tooling Integration Review B. Schmidt

  2. Muon Filter Design General points: • Muon filters are made of iron blocks which have been recuperated from WANF. Blocs are being cleaned and painted at present. • The large blocks (FT1688) are of (L,W,H): 159.7±0.3  79.7±0.3  80±0.8 cm3 • They iron walls have to be installed within an envelope 82cm -> Each block must be positioned with a precision of ±2mm along the beam axis -> Special tooling is required to position the blocks for building the iron walls Integration Review B. Schmidt

  3. Muon Filter: Block Cleaning Integration Review B. Schmidt

  4. Muon Filter Design Concept for seismic stability: Create mono-bloc Integration Review B. Schmidt

  5. Muon Filter Installation Support structure: -> Moving on rails of ex Delphi end-cap Integration Review B. Schmidt

  6. Muon Filter Installation Precision frame: • The frame will be positioned on concrete blocks • The guides will be precisely adjusted by means of a theodolite (?) • The three filters of one half of the system will be mounted together Frame Guides Integration Review B. Schmidt

  7. Muon Filter Installation Sequence: • Iron wall towards the cryogenics is mounted first, then the other side Integration Review B. Schmidt

  8. Muon Filter Installation Sequence (cont.): • After the mounting of the walls • Boardings will be mounted which ensure sufficient seismic stability • plugs around the beam-pipe will be mounted (to reduce the particle rate) Boarding Plugs Integration Review B. Schmidt

  9. Muon Filter Installation Sequence (cont.): • Filter behind station 5 (MF4) is mounted last, once the cryoline installation through RB86 is finished and the quay is removed (August 2004) -> Time constraint for LHCb detector installation MF4 Integration Review B. Schmidt

  10. Muon Filter Installation Resources: • Expenses for muon filter installation and tooling are covered by the infrastructure budget • Work on muon filter installation will be carried out by the LHCb experimental area team between February and September 2004 • It requires 3-4 people (including crane driver) for about 7 months -> about 120 man weeks Integration Review B. Schmidt

  11. Muon Filter Preparation Work to be done: • Drawings (Pierre Jouvel): • Design and production drawings for support of MF 4 (1 month) • Production drawings of tooling for filter construction (3 months) • Production drawings for the boarding (2 months) • Design for plugs between filters and beampipe support (2 months) • Calculations (Joao Batista): • Seismic stability of the Filters (1.5 months) • Seismic stability of the Support structures (1.5 months) ->Most of this work should be finished by November 2003 -> Schedule is very tight ! Integration Review B. Schmidt

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