====== Neutron Benchmarking Working Group ====== ===== Members ===== ^Name^Affiliation^Contact^Interest(s)^ |Ray Bunker((Working Group Chair))|Syracuse University|raybunker@gmail.com|NMM, Soudan Veto Shield, Detector Development| |Anthony Villano((Working Group Co-chair))|University of Minnesota|villaa@physics.umn.edu|NMM, Soudan Veto Shield, Detector Development| |Dan Akerib|Case Western Reserve University|akerib@slac.stanford.edu|NMM| |Adam Anderson|MIT|adama@mit.edu|He3 NCDs at MIT| |Christopher Bass|Le Moyne|bassc@lemoyne.edu|FaNS| |Julien Billard|MIT|billard@mit.edu|He3 NCDs at MIT| |Yu Chen|Syracuse University|ychen87@syr.edu|NMM, Soudan Veto Shield, Detector Development| |Prisca Cushman|University of Minnesota|prisca@physics.umn.edu|NMM, Soudan Veto Shield, Detector Development| |Emily Dragowsky|Case Western Reserve University|michael.dragowsky@case.edu|NMM| |Anton Empl|University of Arkansas at Little Rock|anton.empl@gmail.com|FLUKA Sim of NMM| |Enectali Figueroa-Feliciano|Northwestern|enectali@northwestern.edu|He3 NCDs at MIT| |Matt Fritts|University of Minnesota|fritts@physics.umn.edu|Soudan Veto Shield| |Sean Geldert|University of Minnesota|geld0021@umn.edu|Soudan Veto Shield| |Chiranjibi Ghimire|University of South Dakota|Chiranjibi.Ghimire@coyotes.usd.edu|NMM, Soudan Veto Shield| |Fred Gray|Regis University|fgray@regis.edu|USD Neutron Detector, Soudan Veto Shield| |John Greavu|University of Minnesota|greav011@umn.edu|Soudan Veto Shield| |Raul Hennings-Yeomans|UC Berkeley|raulhennings@gmail.com|NMM, FLUKA Sim of NMM| |Joseph Jeffers|University of Minnesota|jeffe174@umn.edu|Soudan Veto Shield| |Tom Langford|Yale|tlangfor@umd.edu|FaNS| |Alexander Leder|MIT|aleder@mit.edu|He3 NCDs at MIT| |Chang Lee|Case Western Reserve University|clempiric@gmail.com|NMM| |Sarah Lindsay|University of Arkansas at Little Rock|sxlindsay@ualr.edu|FLUKA Sim of NMM| |Dongming Mei|University of South Dakota|Dongming.Mei@usd.edu|USD Neutron Detector, Davis Cavern| |Chris Nedlik|Syracuse University|cdnedlik@syr.edu|NMM, Soudan Veto Shield| |Harry Nelson|UC Santa Barbara|hnn@hep.ucsb.edu|NMM| |Lea Reichhart|University College London|l.reichhart@ucl.ac.uk|Zeplin III Neutrons| |Joel Sander|University of South Dakota|joel.sander@usd.edu|NMM, Soudan Veto Shield| |Richard Schnee|Syracuse University|rwschnee@phy.syr.edu|NMM, Soudan Veto Shield, Detector Development| |Marco Selvi|INFN - Bologna|Marco.Selvi@bo.infn.it|LVD, Benchmarking| |Melinda Sweany|Sandia National Lab|sweany1@llnl.gov|NMM, Detector Development| |Mani Tripathi|UC Davis|mani@physics.ucdavis.edu|NMM| |Chao Zhang|University South Dakota|Chao.Zhang@usd.edu|USD Neutron Detector, Davis Cavern| ===== Goals ===== To improve the accuracy of the Monte Carlo simulations used to estimate the rare-event-search background due to muon-induced high-energy neutrons in deep underground laboratories. Currently, this entails ongoing efforts to: * Understand data recorded by the Neutron Multiplicity Meter (NMM) using a Geant4 detector model and publish high-multiplicity results (**NMM**); * Better constrain the flux of radiogenic and muon-induced neutrons using data from the USD liquid-scintillator neutron detector at Soudan (**USD Neutron Detector**); * Measure the medium- to high-energy neutron flux in the Davis cavern (**Davis Cavern**, long-term); * Fully instrument the NMM (and other LBCF experiments) with timing signals from the Soudan veto shield (**Soudan Veto Shield**); * Acquire correlated veto-shield and NMM data; * Measure the distance between NMM high-energy neutrons and muons in the veto shield; * Conduct simulations that will inform next-generation neutron-detector and -veto designs (**Detector Development**, long-term); * Develop a FLUKA model for understanding NMM data and for comparison with Geant4 (**FLUKA Sim of NMM**); * Develop a He3 neutron-capture detector for monitoring reactor neutrons at MIT (**He3 NCDs at MIT**); * Detection of medium- to high-energy neutrons with the FaNS technique (**FaNS**); * Detailed understanding of muon-induced neutron yield in lead using the ZEPLIN-III muon veto (**ZEPLIN-III Neutrons**); and * Reach out to members of other collaborations (//e.g.//, LVD and Edelweiss) who share common interests. ---- ===== Meetings ===== This working group used to share the NMM project's Friday time slot (from 11 am to 12 pm EST). Detailed NMM analysis discussion now occurs on Tuesdays at 2:30 pm EST (same esnet connection info), together with discussion of ongoing veto-shield analysis projects. Agendas and minutes are available from the [[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/WeeklyMeetings|NMM meetings page]]. Thus, the AARM Neutron Benchmarking Working Group now owns the Friday time slot. On an ~monthly basis, we will have broad-interest summary meetings in which one or more of above listed projects will report on recent developments. ^Day of the Week|Friday| ^Time|8-9 am PDT (11 am to 12 pm EDT)| ^ESNET Video #|886388 (no password)| ^Dial in #|(510) 423-9220 (conf code 886388#)| ^Next Meeting|Nov ??, 2013| ^Meeting Agenda^Main Topics^Minutes^Organizer^ |[[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/WeeklyMeetings|October 5, 2012]]|NMM status update & paper draft|[[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/MinutesOct5-2012|Summary/Agenda]]|Ray| |[[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/WeeklyMeetings|October 19, 2012]]|NMM Geant4 sim status, FLUKA sim status|[[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/MinutesOct19-2012|Summary/Agenda]]|Ray| |[[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/WeeklyMeetings|November 2, 2012]]|USD neutron-detector update, NMM Geant4 sim, FLUKA sim|[[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/MinutesNov2-2012|Summary/Agenda]]|Ray| |[[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/WeeklyMeetings|November 30, 2012]]|NMM Geant4 sim, NMM FLUKA geometry, Gd capture-gamma spectrum|[[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/MinutesNov30-2012|Summary/Agenda]] |Ray| |[[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/WeeklyMeetings|January 4, 2013]]|Discussion related to the Watchman Project (led by Anthony)| |Ray| |[[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/WeeklyMeetings|January 25, 2013]]|Status Reports| |Ray| |[[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/WeeklyMeetings|February 8, 2013]]|Neutron Monitoring with He-3 NCDs at MIT, NMM Geant4 Sim update|[[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/MinutesFeb8-2012|Summary/Agenda]]|Ray| |[[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/WeeklyMeetings|February 22, 2013]]|NMM & veto-shield hardware upgrade, NMM Geant4 Sim update| |Ray| |[[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/WeeklyMeetings|March 1, 2013]]|NMM & veto-shield hardware upgrade|[[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/MinutesMar1-2012|Summary/Agenda]]|Ray| |[[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/WeeklyMeetings|March 15, 2013]]|NMM DAQ upgrade & paper draft|[[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/MinutesMar15-2013|Summary/Agenda]]|Ray| |[[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/WeeklyMeetings|March 22, 2013]]|NMM DAQ upgrade, paper draft discussion & Geant4 sim update|[[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/MinutesMar22-2013|Summary/Agenda]]|Ray| |[[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/WeeklyMeetings|March 29, 2013]]|NMM DAQ upgrade, Geant4 sim update|[[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/MinutesMar29-2013|Summary/Agenda]]|Ray| |[[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/WeeklyMeetings|April 26, 2013]]|New-member welcome (Lea), otherwise attendance too low for useful discussion| |Ray| |[[:NMM:May10_2013_meeting|May 10, 2013]]|**Summary Meeting:** FaNS, ZEPLIN & USD Liquid Scintillator|[[:NMM:May10_2013_meeting|Notes/Agenda]]|Ray| |[[:NMM:May31_2013_meeting|May 31, 2013]]|**Summary Meeting:** ZEPLIN & MIT NCDs|[[:NMM:May31_2013_meeting|Notes/Agenda]]|Ray| |[[Nov ??, 2013]]?|**Summary Meeting:** NCD Simulation| |Ray| ---- ===== Internal Notes ===== **[[:nmm:Ebook|The NMM/Veto-shield E-book]]** * **Geant4 Studies** * {{::scintillatorneutronyield.pdf|Neutron Yield in Scintillator vs. Muon Energy}} - Melinda * **USD Liquid Scintillator Neutron Detector** * {{::ls_newnov01_12_chao.pdf|Data Analysis Update}} - Chao (Nov 2, 2012) * {{:ls_neudetmay07_13_chao.pdf|Status Update}} - Chao (May 10, 2013) * **NCDs at MIT** * {{::ncdslides_v2.pdf|NCD Introductory Slides}} - Julien (Feb 8, 2013) * {{:ncdslides-31052012.pdf|NCD Status Update}} - Julien (May 31, 2013) * {{:20130531_ncdmcsummary.pdf|NCD Simulation}} - Adam (TBA) * **FaNS at NIST Gaithersburg** * {{:langford_lrt2013.pdf|LRT 2013}} - Tom (Apr 10, 2013) * **Measurement & Simulation of the Muon-induced Neutron Yield in Lead** (using the ZEPLIN-III muon veto) * {{:lrt_lr_2013.pdf|LRT 2013}} - Lea (Apr 12, 2013) ---- ===== External Links ===== * [[http://neutron.physics.ucsb.edu/|The NMM Home Page]] * [[http://neutron.physics.ucsb.edu/twiki/bin/view/Neutron/WebHome|The NMM TWiki]]