ReconstructingProtoDUNE events

LeighWhiteheadEP-NUMeeting

04/10/18

Introduction• Ithasbeenafewweekssinceweswitchedon

• We’vemanagedtoreconstructanumberofnicelookingevents

• Otherthanapplyingalittlefilteringtotheinductionviewsandanoisethreshold,Ihaven’treallychangedanything• ShouldbeabletoreducetheseoncetheS/Nimprovesfurther

• Thereconstruction(andtheexperimentasawhole)hasperformedremarkablywell• Abigthankyoutoeveryoneinvolved!

LeighWhitehead 2

TheFirstTracks• Ireconstructedthefirsttracksfromthefirstdayortwoofdata

• SmallstubsveryclosetotheAPA,butrealtracks!• Offsetinthetoppanelsfromtracksandspacepointsduetoan

incorrecttimeoffsetinmyconfigurationatthetime

LeighWhitehead 3

FirstNiceLongTrack• Thisisevent118inrun4351andatrackspansTPCs6and10

LeighWhitehead 4

FirstNiceLongTrack• Liningthemup:

• Thisisclearlyanicelongtrack• Nowlet’sseewhatPandoracando

LeighWhitehead 5

PandoraReconstruction• Reconstructed2.5mcosmictrack!

LeighWhitehead 6

Intermission• Sinceseeingthatfirstlongtrackthennicelyreconstruction

cosmicraytrackshavebecomethenorm

• EventfromMondayshowingalargenumberofnicecosmictracks

• Out-of-the-boxfromPandora

LeighWhitehead 7

Intermission• Ifoundanumberofnon-track-likeinterestingevents

• WhilsttheywerevisibleinthedefaultreconstructionchainIwasrunning,IpassedsomeoftheseontoSteveGreen,theprotoDUNE Pandoraexpert

• StevehastheoptiontoignoresomenoisychannelsinPandora• Thestandardbadchannelmapwillbeindunetpc soon

• StevehasalsoforcedPandoratoreconstructthefollowingeventsunderthebeamhypothesisasopposedtocosmic• Thiswillbeautomatedbutforgettingsomequickimagesofniceeventsit

wasdonemanually

LeighWhitehead 8

MichelElectronCandidate• Thisoneactuallyreconstructedfineout-of-the-box

• SteveranitthroughPandoraagaintoproducetheplotsthatclearlyshowtheassociationsofthetwoparticles

LeighWhitehead 9

CosmicElectromagneticShower• SpottedintheOMbyJamesPillow

• ClearintherawdatafromTomJunk

• Thenoisebandscausedsomereco problemsforme

• SteveprocessedinhislocalPandoraversion

LeighWhitehead 10

CosmicElectromagneticShower

LeighWhitehead 11

PionCandidate• Wefoundapioncandidateattheendoflastweek

• Likelyfromthebeamhalo

LeighWhitehead 12

TheBeam!• OnTuesdaywesawtheveryfirstglimpsesofthebeam

• Veryfaintasthepuritywasonlyjusthighenough

• 1GeVpositron

• Tingjun +Chaomanagedtogethit-levelreconstructiontomakethisimage

• Greatachievement!

LeighWhitehead 13

Summary

• Wehavealreadyseemsomegreatlookingevents

• Alottolookforwardtowhenwegetthebeambackinaweek

• Stilllotstodoinfilteringthenoiseandtuningthresholdsetc,butverypromisingresultsfromthereconstruction• Greatout-of-the-boxperformance

LeighWhitehead 14

Itworks!