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Outline
- Motivation
- Data sample
- Analysis procedure
- Event display
- Summaty & Outlook
Presenter Name | Presentation Title 2
ProtoDUNE-SP Study of 1 GeV Protons Heng-Ye Liao, Glenn - - PowerPoint PPT Presentation
ProtoDUNE-SP Study of 1 GeV Protons Heng-Ye Liao, Glenn - - PowerPoint PPT Presentation
ProtoDUNE-SP Study of 1 GeV Protons Heng-Ye Liao, Glenn Horton-Smith, Tingjun Yang ProtoDUNE sim/reco meeting Dec 19, 2018 You Inst Logo You Inst Logo Outline Motivation Data sample Analysis procedure Event display
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Presenter Name | Presentation Title 3
Motivation
- Detector response for protons (i.e., Proton dE/dX)
→ Tag stopping protons firstly for the study
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Presenter Name | Presentation Title 4
Data Sample
- Use recommended run from Owen
→ See Owen’s good run list in: https://indico.fnal.gov/event/19262/contribution/14/materi al/slides/0.pdf
- Run number: 5387
- Use entire run for this analysis
- Run info:
- High voltage: 180 kV
- Beam momentum: 1 GeV/c
- Purity: > 5ms
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Filter & Sanity Check
- Use Justin Hugo’s filter to select 1GeV beam protons
(see Justin’s slides for more details: https://indico.fnal.gov/event/19185/contribution/2/material/slid es/0.pdf)
- Use Jack Calcutt’s LArSoft module to get beam info
(https://wiki.dunescience.org/wiki/Look_at_ProtoDUNE_SP_d ata#Parsing_Beamline_Information)
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Beam Inst. [cm] Primary Track [cm] Z Position (0) 32.73 (0.939) Y Position 421.01 (3.876) 423.38 (4.753) X Position
- 29.75
(4.118)
- 19.43
(4.358)
Beam Position
Values in the table: Mean (Sigma)
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Track Selection – Angle Cut
Beam direction P r i m a r y t r a c k d i r e c t i
- n
Cut at 0.93
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Track Selection – Position Cut
Before angle cut After angle cut
27 < ∆Z < 39 [cm] 0 < ∆Y < 10 [cm] 6 < ∆X < 15 [cm]
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Track Length Distribution
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Track Length Distribution
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Proton Length
- Convert proton momentum to its CSDA range
- CSDA range: Average path length traveled by a charged particle
as it slows down to rest (continuous-slowing-down approximation)
- NIST data base of proton travels in argon
(https://physics.nist.gov/PhysRefData/Star/Text/PSTAR.html)
- Use Friedman’s super smoother to get the associtated function
(Friedman, J. H. (1984) SMART User's Guide. Laboratory for
Computational Statistics, Stanford University Technical Report No. 1.)
92.58 cm
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Track Length Distribution
Peak position=0.84 Stopping Protons “Interacting” Protons
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Monte Carlo simulation
- Use MCC11 1GeV/c proton sample (full data set) to do the same
analysis
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Track Length Distribution (MC)
Peak position=0.94 Without space charge effect
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Track Length Distribution (MC)
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Event Display
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79.3 cm
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Event Display
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36.7 cm
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Event Display
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3.57 cm
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Event Display
Broken track?
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1.58 cm
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Event Display
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3.05 cm
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Summary & Outlook
- Developed methods to tag stopping protons
- Next Step:
- Track length distribution with space charge effect / fluid flow
- Work on PFparticle product and its application
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