Minutes from the July 29 Meeting

• Can you pick an off=axis location today?
  (in other words, how much would lose if you picked a spot today and delta m2 ended up at 1.5,2,3,3.5eV^2?) Probably we won't address this in a substantial way in the R&D document.
• What is the optimal detector technology per fixed cost?
  It's possible that the optimal detector technology depends a little on what you're trying to do: if you're trying to get the lowest theta13, that's one thing, if theta13 is large and you're just trying to get the statistics, then the NC background doesn't matter quite as much...and it's back to just a question of what detector has the largest mass*acceptance per unit dollar? This question will definitely be discussed in the document.
• What is the discovery reach and achievable precision on theta13?
  again, probably detailed analyses are outside the scope of this document. we can certainly give the "rough estimates" we have now...and refernece the more detailed studies that have happened thus far.
• What supporting measurements are critical to understand the background?
  this is partly going to be discussed in the "near detector cross section measurements" section written by Kevin. Also one could put a plug or a mention of MIPP here
• if the MINOS on axis near detector is the only one available to characterize the beam, how well can the flux be known?
  we can address this somewhat by talking about how it's the backgrounds that are important more than the fluxes, and that the NC backgroudns especially have to be measured in the same type of detector...not the MINOS on axis near detector.
• How well does detector proposed fit into a longer term program to measure CP violation? Shoujld one adopt in the first stage the technology most appropriate for later stages?
  this is definitely something our report will address (in the expandability section).
• How significant are the cosmic ray backgrounds? Can the detector be on the surface?
  again, this is in the second chapter: on-surface vs below ground...
• Are there other important measurements that a 20kton detector optimized for electron ID could perform?
  since it's imagined that this detector would be on the surface, then it's unlikely it would be good for other (i.e. solar, atmospheric) physics...but in the "expandability" section it would be worth noting that if you are going to go through the trouble of making an extremely large very sensitive detector, then there the additional cost of putting it somewhere below ground might actually be worthwhile for the other physics (proton decay, etc.). Mark Messier pointed out that if we're going to talk somewhere in this report about non-accelerator measurements, then we should also mention somewhere that there's plenty of non-oscillation neutrino physics to do at the near detector...(i.e. mention this early in the intro, for example).