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Muon Filter Design and Installation

Muon Filter Design and Installation. Outline: Filter design and basic concept to ensure seismic stability Filter Installation and the required tooling. Muon Filter Design. General points:

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Muon Filter Design and Installation

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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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