MAUS StatusA. Dobbs, MPB Talk, 24th November 2014

MAUS Status, A. Dobbs, MPB Talk 2

Overview• Detectors

• TOF• CKOV• Tracker• KL• EMR

• Global tracking• MC• Geometry• Framework• Physics Block Challenge

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MAUS Status, A. Dobbs, MPB Talk 3

Detectors

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CKOV – Threshold Cherenkov detectors (aerogel)TOF – Three Time of Flight detectors (scintillator bars)Tracker – Two high precision trackers with 5 detectors stations each (scintillating fibre)KL – KLOE Lite detector, part of downstream calorimeter (lead and scintillating fibre)EMR – Electron Muon Ranger, part of downstream calorimeter (scintillator bars)

MAUS Status, A. Dobbs, MPB Talk 4

TOFLead: D. Rajaram• Reconstruction works

and is stable• Calibrations in CDB

• MC is stable• Need to restructure

MCDigitiser code for MC trigger

• Online plots in place

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eµ

e

µ

MAUS Status, A. Dobbs, MPB Talk 5

CKOVLead: L. Cremaldi, D. Rajaram• Reconstruction:• Pedestal calibration and pulse

finding algorithm have been improved, needs to be updated in trunk

• MC:• Missing sensitive detector code• Missing digitiser code• Stems from resource issue. Will

transfer resource from recon to MC soon

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µ

e

MAUS Status, A. Dobbs, MPB Talk 6

TrackerLead: D. Adey• Reconstruction:

• Good position and momentum residuals observed• Used to reconstruction emittance, ~ 1.2% error bias vs MC• Looking at improving low pt performance, efficiency studies

underway...

• MC:• Recent improvements to noise algorithm, close to completion

• Unpacking• Broke during previous code updates (between MAUS 0.7.5 and 0.7.6),

fix work ongoing (D. Adey, Y. Karadzhov)

• Paper describing reconstruction and performance: first draft finished (A. Dobbs), see http://mice.iit.edu/micenotes/public/pdf/MICE0451/MICE0451.pdf

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Tracker Position Residuals

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Tracker Momentum Residuals

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MC Single Particle Analysis

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Upstream Tracker

DownstreamTracker

6mm transverse emittance, 200 MeV/c beam. Cuts: pt < 150, pz < 300, p value > 5%, no secondaries, only µ+ (cut uses MC data), no decays present, track appears in both trackers

MAUS Status, A. Dobbs, MPB Talk 12

KLLead: M. Bogomilov, J. Nugent• Reconstruction

• Works and stable• Calibrations are in CDB• Pileup in KL based on expected

rates from the beam is now included as part of the analysis package for the Step I PID study

• MC• Digitiser complete and

validated with Step 1 data• Conversion and smearing tuned

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KL ADC Product

Entr

ies

MAUS Status, A. Dobbs, MPB Talk 13

EMRLead: F. Drielsma• Reconstruction:• First pass now in MAUS trunk,

good results seen• Calibration files not yet in CDB

• MC:• Digitiser is complete

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EMR Tracks Pre-Digitisation

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Plane ID -> Distance in z, Bar ID -> Distance in x

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EMR Tracks Post Digitisation

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Plane ID -> Distance in z, Bar ID -> Distance in x

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Global TrackingLead: M. Uchida• Steady progress following personnel

changes• Not yet ready to be used in anger• Solid progress on both and PID and track

matching and fitting, first results seen

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MAUS Status, A. Dobbs, MPB Talk 17

MCLead: A. Dobbs• In place and works• Beam generation and propagation now

available from G4Beamline in addition to MAUS native (J. Nugent)• MC trigger progressing (D. Rajaram)

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GeometryLead: R. Bayes• CDB geometry has been through vetting and found to be good (static since May)• Implementing a GDML

parser to increase performance

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FrameworkLead: A. Dobbs• A number of memory leaks resolved, still some to

go (A. Dobbs, D. Rajaram)• Batch reconstruction on the GRID now working but

need to make a release with new code• Little less than 1% of jobs were cancelled ->

remaining leaks to be plugged• Test coverage reasonable, test server working well

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MAUS Status, A. Dobbs, MPB Talk 20

Physics Block ChallengeLead: R. Bayes, C. Rogers• Falls under the purview of the Analysis group…• … but MAUS responsible for providing a

release version that works on the GRID. Currently have a version running not GRID, not yet a release• First physics block challenge run complete,

with the data made available to collaborators

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MAUS Status, A. Dobbs, MPB Talk 21

Summary• TOF, KL, EMR in good shape and producing results• Tracker in good shape, able to measure emittance. Need to

implement online display, fix unpacking, look at low pt performance• CKOV work ongoing, producing results• Global tracking making steady progress now, but deadline very tight NB: We do not need Global to measure emittance, only TOF and Tracker• Geometry has been through vetting and found to be good• Framework: good, batch production now working, but need to plug

remaining memory leaks• General MAUS journal paper in production

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MAUS Status, A. Dobbs, MPB Talk 22

Step IV Readiness• Can reconstruct all detectors• Can perform PID and select muons• Can reconstruct emittance• Improvements ongoing

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Questions?