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TEST PAGE

Test page……………………………………………………………………………....Test page. TEST PAGE. Test page……………………………………………………………………………....Test page. Assessing the safety of the beam energy tracking system (BETS). David Jones david.huw.jones@cern.ch.

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TEST PAGE

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  1. Test page……………………………………………………………………………....Test page TEST PAGE Test page……………………………………………………………………………....Test page

  2. Assessing the safety of the beam energy tracking system (BETS) David Jones david.huw.jones@cern.ch

  3. Content1. BETS, and its role in the LBDS 2. Assessing the safety of BETS

  4. What may happen if something goes wrong Hole in Copper 450GeV p+ beam Verena Kain

  5. LHC Beam Dumping System (LBDS)

  6. Sub-System function Sub-System function Sub-System function Sub-System function Sub-System function Sub-System function Sub-System function Sub-System function Sub-System function Sub-System function Sub-System function Assessing safety Function description of system – Correct operation Function description of subsystems System function System function Sub-System function Sub-System function

  7. Assessing the safety of BETS

  8. Assessing the safety of BETS

  9. X3 X1 X0 X2 Assessing the safety of BETS AVAILABLE FAILED SAFE X3 X1 X0 X2 Internal Dump Request Common-mode failure across all of Common-mode failure across all of the BEM surveillance mechanisms the BEA cards, resulting in an on both cards undetected failure - watchdog timer, CRC check etc X4 X2 X1 X3 AVAILABLE FAILED SILENT No Surveillance Common-mode failure of part of the BEM functionality, on both cards

  10. Conclusions • The BETS system is a safety critical component of the LHC • Progress is being made towards assessing how safe it is

  11. Questions ?

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