Phase ST 1 - commission injection region                            

  1. Injection preparation:

    1. Check SPS intensity limit (should be 3 to 4•1010)

    2. Check logging and measurement databases [event triggered and indexed database?] are running

    3. Check kicker settings (54 kV) and waveform

      • Inhibit extraction from SPS
      • Pulse injection kicker (need LHC beam permit and injection permit)
      • Verify synchronization
      • Verify injection kicker waveform with OASIS (amplitude and synch)
    4. Move all screens in beam
    5. Set BTV application to subscription mode
    6. Move TCDIs downstream of downstream TED out of beam
    7. LHC Sequencer changes LHC to mode “Inject Pilot"
    8. LHC Injection sequencer makes request to CBCM with ring, bucket number, beam type and number of PS batches
    9. Extract towards last TED in TI 2
  2. Commission final 100 m TI 2
    1. Close TDI completely in IR2 (one jaw IN). [Settings in mm]
    2. Power MKI on, but kick disabled
    3. Disable extraction kick in SPS
    4. Move out TI 2 TED
    5. Check all elements are pulsing/powered
    6. Enable kicker and extract towards LHC
    7. Check BLMs and BPMs reading and screen TVs on
    8. Thread beam through the last part of TI 2 and the MSI
  3. Beam injected into LHC, to TDI without MKI
    1. Final checks that all LHC injection and BI systems are operational
    2. Thread beam through MSI into LHC – image on screen at MSI
    3. Steer roughly through MSI – detailed setup later
    4. Thread through Q5, MKI, Q4, D2 to TDI
    5. Beam to BTV at TDI
  4. Beam commission injection BTVs
    1. Signal acquisition (beam size and position) on TVs and via control system
    2. Check SDDS screenshot logging and derived parameter in shot-by-shot logging DB
    3. Rough sanity checks on signs, sizes, positions  etc...
  5. Detailed steering onto TDI
    1. Sort out BPMs, correctors and roughly optics in last bit of TI 2 and injection region down to the TDI with kick response
    2. Steer to nominal position at screen within margin for kickers off (what is nominal position? what is margin?)
    3. Perform rough calibration of number of protons lost on TDI versus BLM response
  6. Power injection kicker MKI, beam onto TDI
    1. Beam request off
    2. Enable MKI kick
    3. Beam request on - extract from SPS and try inject onto TDI
    4. Check kicker timing
      • Check kicker signal versus beam signal with OASIS to sort out timing
      • Center beam signal within the waveform for first phases
    5. Check beam position on TDI

  7. Optional: Check stability of transfer lines and injected trajectory without MKI
    1. Check shot-by-shot logging is working and all signals are correctly time stamped and correlated
    2. Run for ~1000 pilot injections without MKI, recording trajectory and screen shots
  8. Optional: Check stability of injected trajectory with MKI on, and measure MKI waveform
    1. Check shot-by-shot logging is working and all signals are correctly time stamped and correlated
    2. Run for ~1000 pilot injections with MKI, recording trajectory and screen shots to check stability of MKI (pilot at same location at waveform)
    3. Check flatness of MKI waveform (move pilot on waveform)
  9. Optional: Commission Software Interlock System (parasitic)
    1. Checks of beam-related acquisitions
    2. Test injection process with SIS active
  10. Optional: Perform aperture scan at MSI for injected beam.
    1. Sliding bumps at MSI in both planes, measure transmission to LHC (?) or BLMs
    2. Correct trajectory if not centered and re-measure
    3. Target: at least 3 sigma in the vertical plane