ND CDR: MPD Chapter 2019/12/17 J. Raaf ND CDR timeline guidance - - PowerPoint PPT Presentation

ND CDR: MPD Chapter

2019/12/17

• J. Raaf

ND CDR timeline guidance from Mike & Steve

• January 6: First drafts of chapter contributions due
• Goal: Edit and have first draft to collaboration by end of January

(at collaboration meeting)

• Primary chapter authors (with input from others):

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To-Do’s from last week

• Quantitative assessment of converted pairs and ECAL backgrounds (Leo)
• Truth-level quantification of number of asymmetric e+e- pairs
• Add quantified neutron study to text (Eldwan)
• Nue selection cuts w/quantified efficiency & purity (Tanaz)
• Plots of 1/2/3-pion samples in HPgTPC (Andy F. + Andrew/Fan)
• Seb Jones showed some plots in the LBL meeting yesterday that may also be

good to include, but these do not have the full overlay or improved parameterized reconstruction (https://indico.fnal.gov/event/22670/contribution/2/material/slides/0.pdf)

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Seb’s 2𝜌/3𝜌

• HPgTPC samples

could make it

• bvious is there is a

problem with our interaction model (e.g. if data looked like NuWro and our model looked like GENIE)

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Additional to-do’s from internal reviewer comments on CDR lite

• Introduction is “long, unfocused, internally redundant, and filled with

qualitative arguments in lieu of quantitative ones”

• Restructure to focus on one or two “killer apps”:
• Show resolution and pointing accuracy, etc., of muons leaving LAr
• Quantitative demonstration of nue/nuebar separation
• Possibly “something with charged pion ID or low proton thresholds”
• “The low secondary interaction rate is a feature”
• Show it as a function of KE
• The “argument about pi0 backgrounds is unconvincing without a

simulation”

• Needs a study that takes into account asymmetric pion decays and uses realistic

efficiencies for the ECAL to identify these.

• What is the efficiency of finding the second photon from NC pi0 events as a function
• f the energy of the other photon?

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Internal reviewer comments on CDR lite

“Ks and lambda calibration certainly work at colliders. Are there sufficient statistics for this to be useful here?”

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Internal reviewer comments on CDR lite

• “Fig 32: the most relevant region is 0-250 MeV. Should be zoomed in

there and more points should be added.”

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Internal reviewer comments on CDR lite

• “ECAL energy and angular resolution are great. Should add

reconstruction efficiency, which is presumably high at most of these energies, so focus on < 100 MeV”

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Slides from last week…

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Background to 𝜉e CC from photon conversions

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Measuring neutrons in the MPD

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Other analyses matured since CDR-lite

• CC coherent pions
• Ready for CDR?
• Leo has written up a short summary note à to do: turn into CDR-level text

(jargon-free, clear, etc.)

• Multi-pion samples in MPD
• Overlay & sample generation in progress by Andy/Tanaz
• MPD plots not yet made (Andy + U Pitt student/postdoc?)
• Can we have at least rough versions of plots by next week (before people start

disappearing for holidays) so we can figure out what text to write about them?

• ECAL studies?

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Read-Only links to CDR chapters

• https://docs.google.com/document/d/1A53P4fJl6basCW7gF46LL9fo7

JbcnBlHEwU-nTNTgNE/edit

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Other MPD-related LBNC comments

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