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  1. Default "accelerator" is loaded at startup.
    If you want to load a test model, Use Accelerator->Load Accelerator...
  2. Accelerator->Sequences is in fact really for automatic calculation of bump knobs
  3. to create a knob, just do the following:
    1. Optionally, create a group (plus).
    2. Create a knob (plus)
    3. Add devices:
      1. Do this "by hand" if you know the PV. Eg YCOR:IN20:492:BDES
      2. Do this by "drilldown" (which uses physics name). In the Editor:
        1. Select a model sequence: Eg BXG TO BX01. Note that sequences are in alphabetical order. That is on the fix list.
        2. Select a device "type". Note that the type names given are:
          1) SNS type names, which themselves use >1 name eg hcorr == dch == horrzcorr => X correctors.
          2) and also flattened hierarchy of types, eg type "dipole" includes hcorr and vcorr.
        3. Select a device name, by "physics name".
        4. Select FieldSet (not FieldRB). (issue: FieldRB should not be offered).
    4. Or calculate bump knobs
      1. Select a section of contiguous sequence of sections (a "combo sequence") Accelerator->Sequences
        BXG TO BX01 - BX01 to BX02 works.
      2. Knobs->Make Horizontal Bumps Make Horizontal Bumps (Make Vertical Doesn't work, since it seems so many of our correctors are SLC!)
      3. For Horizontal Bumps: These setups were tested.
        1. Design Offset 3 (default) magnets - works (4 magnet doesn't work!)
        2. Design Angle 5 (default) magnets - works
        3. Live Offset 3 - works
        4. Live Angle 5 works - works
      4. For Vertical Bumps, select sections BXG to BX01 - QM15 to FV2
        1. Design Offset 3 (default) magnets - works, but they're mostly SLC magnets.
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