MCU.md

+## Proposals and presentations
+Most of the documentation for the MCU McVine Granroth science use case can be found in dropbox here: [AE and SE Joint Groups/Projects/Neutrons/NDIP/Workflows/MCU/](https://www.dropbox.com/sh/mbfckwz2veyyhmy/AAA3MxkhQ4qwVEZ7HGjFmLL_a?dl=0)
+
+## Diagrams
+The McVineSimulationWorkflow_Diagram, ExperimentWorkflow, ConfigurationWorkflow, and ResolutionSimulationWorkflow diagrams, in the MCU folder, were an initial attempt, by John Hetrick and Jon Fortney, to capture the flow of the original proposal.  As such, they are likely incomplete and will need refinement.
+
+## McVine
+- McVine is python script
+- Installed via conda
+- Different script per instrument
+- User won’t need to modify script
+- Sample and detector simulation run as one
+  - Output is a Nexus event file
+  - Nexus file fed into reduction
+  - Reduction produces MD histo files aka reduced nexus
+    - output varies from instrument to instrument
+
+## Meeting notes
+### Experiment Workflow Diagram
+- Do simulations with same configs as when measured
+  - Directory with collection of xml files
+  - Garrett will give us schema definitions and examples of the xml config files
+- Run number: defines instrument configuration
+- Present users with catalog of configurations and user would only have to modify a little
+  - Advance users may create their own
+
+
+## Wenduo code 
+[live run monitor](https://code.ornl.gov/mc_workflow_ldrd/live-run-monitor)
+
+[Example ARCS config]( https://code.ornl.gov/mc_workflow_ldrd/live-run-monitor/-/blob/main/configure/arcs_pv.json)
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