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Handshake over DIP

Learn how the LHC handles the injection process, synchronization, and communication with experiments during the beam modes. Suggestions for handling problems are also discussed.

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Handshake over DIP

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  1. Handshake over DIP R. Alemany - BE/OP/LHC

  2. R. Alemany - BE/OP/LHC

  3. R. Alemany - BE/OP/LHC

  4. Questions Proposal: after receiving the READY from all the experiments, LHC starts the injection process: injection probe beam, injection setup beam, injection probe beam and injection physics beam. Then, only once the whole injection process is finished, LHC sends the message OK and STANDBY. How to handle the FULL INJECTION phase? The experiments can follow up the injection looking at the BEAM MODE published via DIP. INJECTION PROBE BEAM INJECTION SETUPBEAM INJECTION PILOT BEAM INJECTION IPHYSICS BEAM R. Alemany - BE/OP/LHC

  5. How to handle the PROBLEM message? • PROBLEM means anything except an action that requires a beam dump, i.e. is interlocked. Proposal: LHC expects the message PROBLEM as an alternative to PREPARE or READY. or PROBLEM or PROBLEM Outside these three phases INJECTION, ADJUST and DUMP  Machine doesn’t use Handshake protocol and therefore the Machine doesn’t listen to msg PROBLEM. Other mechanism needed. Suggestion?  telephone. R. Alemany - BE/OP/LHC

  6. How to communicate that the LHC synchronization phase is done and experiments can switch to LHC timing? • Proposal: • Change beam mode to INJECTION PROBE BEAM • Check that the RF power is on • Prepare the RF Beam Control for filling (here we do all the synchronization) • Send the Handshake DIP message to experiments IMMINENT • Etc…. (the sequence goes on with other tasks) The beam mode change to  INJECTION PROBE BEAM signals the start of the synchronization, the DIP message IMMINENT signals that the synchronization has been done successfully. R. Alemany - BE/OP/LHC

  7. LHC Beam Modes R. Alemany - BE/OP/LHC

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