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Here is a summary of our phone discussion on Thursday, Nov 17, 2011.
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Discussion:
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* Tim's plan is to wrap-up his thesis by October, no new studies of MICE Step IV envisioned.
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* Peter Lane will be working on simulation and, later, data analysis for Step IV with flat absorbers.
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* Question of solid or lH2 absorbers first: we should be flexible with planning for the time being, the next CM should clarify the situation by updating the status of AFC #1.
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* Detector alignment: tracker group responsibility.
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* John pointed out that we will only be able to match the optics once all the infrastructure is in the MICE hall. Ulisse suggested that he can rematch the optics, but that might now be practical due to the fact that the "as-built" dimensions of all the coils are not available. However, it was decided useful to revive TRD-based Step IV configurations as per Ulisse's note from Nov 7, 2004 (MICE note 88) and test the baseline configuration (6,200) in MAUS to make sure there is a match.
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* In addition to the test described above, it would be instructive to deliberately introduce errors in emittance or absorber parameters and see if these can be tracked.
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* Relative fields in us/ds spectrometers: make sure those are measured and understood.
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* Tracker alignment can be tested with all the magnets turned off => straight tracks in both.
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Actions list:
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* Prepare a draft of the run plan for Step IV, based on the CM29-30-31 discussions, that takes into account different momenta and beamline settings required. Limit the number of configurations. (Pavel)
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* Testing the AFC bore radius prior to installing the solid absorber: Pavel to check with Wing Lau. (Pavel)
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* MICE Note 88 contains the matched optics currents. It would be useful to discuss details of how these configurations were obtained and make sure we have the algorithm handy when Step IV infrastructure is installed. Ulisse, would you agree to make a presentation about this and/or send around the details of the implementation? Should this topic be included in the analysis meeting or be a separate phone meeting? Discuss matching code adaptation for MAUS. (Ulisse, Chris, Pavel, Peter)
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* Report on absorber status (Pavel)
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* "All magnets switched off" configuration for tracker alignment: do we need a simulation? If so, who could be the champion? (???)
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* Beamline parameters: currently Adam Dobbs, need more people. (???)
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