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Run plan for 201603

Axioms

  • 13 Sept 2016 - 28 Oct 2016 with 28 Sept and 12 Oct 2016 as maintenance days
  • Colin does not want to do an absorber install as it will upset the magnet commissioning; it will likely result in delay to start up of 2016/03. We can do an absorber install if we get through the empty absorber running.
  • This is all solenoid mode running; flip mode can be contemplated but would require some additional magnet commissioning work
Outline Concept (empty absorber)
  • TOF calibration and detector alignment (they should not have moved)
  • ECE -- -- FC -- -- ECE with ECE running at 3 T; this more-or-less re-establishes the baseline from 2016/02; we can do some optics work here with minimal coupling
  • ECE M2 M1 FC -- -- ECE with ECE running at 3 T and FC, match coils optimised for transmission at 200 MeV/c; this is the "zero" data set for material physics and we do some optics work here also
  • ECE M2 M1 FC -- -- ECE with ECE running at 3 T and FC, match coils optimised for transmission at 140/170/240 MeV/c; this is the "zero" data set for material physics
  • ECE M2 M1 FC -- -- ECE with ECE running at 3 T and FC, match coils optimised for cooling at 200 MeV/c only. This gives us a chance to measure emittance reduction.

Questions:

  • Do we fiddle the magnet currents for material physics at different momenta?
    • This can improve transmission; but can introduce a systematic error and stresses the magnets
  • Is it worth doing a material physics measurement with different fields on the absorber?
    • Stress the "thin absorber" approximation
  • Can we do an emittance reduction measurement? Or should we hold out for M2D?
    • What is the bias introduced by scraping and can it be managed by e.g. an amplitude analysis?

Also - need physics shifters