Notes from March 28 telecon on science requirements for clusters/high-ell

Agenda Items:

• Merging dark energy rows in Science Traceability Matrix
• Simulation plan
• Progress on measurement requirements

* Item 1: Delayed discussion to a later telecon

* Item 2:

• Simulation plan structured around three levels:
  • L1. Analytic Fisher predictions (current state);
  • L2. Injection of clusters into simulated sky maps (elements in place; can produce results on months timescale);
  • L3. Full N-body + hydro simulations (longer term);

• Several groups engaged: ANL, Battaglia/CITA, Paris, SLAC.

• Will see how to merge with simulation effort at low-ell; levels 2 and 3 above could provide inputs for mock sky maps.

• Item 3:
  • First pass on measurement requirements with numbers TBC by simulations at level 2.
  • Will specify requirements in terms of sky coverage, angular resolution, sensitivity and frequency bands.
  • Opinion expressed that nu>220 bands will be necessary. Study required with simulations at level 2.

Actions:

• Need to close loop on z binning for sigma8(z) requirement (Mat, Nick)