EHE MC Check

K. Mase* on behalf of EHE penguins,

Chiba university*

Collaboration Meeting OxfordKeiichi Mase

■ Simulated condition @ Chiba Muons are simulated with JULIeT. JULIeT → photonics → ROMEO → DOM simulator and calibrator → weighting-module 6 < log10 E < 9 [GeV] dF/dE = E-1

The direction is uniform (default) The position is uniform within 880 m radius. The interaction of pair creation, brems. and photo-nuclear, and the decay is switched on. (default) bulk ice photonics table

■ The purpose of this study To check the MC for the Extremely High Energy (EHE) nutrinos (muons).

■ Test data generated at Madison (Aya, Paolo) and Chiba (Keiichi, Shigeru)

1016 eV1015 eV

1019 eV1018 eV 1020 eV

1017 eV

Collaboration Meeting OxfordKeiichi Mase

■ Primary Particle

Log10(Primary energy) [GeV] cos(theta) [rad.]

#

##

Azimuth [rad.]

This is fine!

Collaboration Meeting OxfordKeiichi Mase

■ The highest energy cascade along a muon track

X [m]

Log10(Primary energy) [GeV]

# ###

Z [m]

Y [m]

Collaboration Meeting OxfordKeiichi Mase

■ The highest energy cascade along a muon track

Log10(Primary energy) [GeV]

Log

1 0( h

ighe

s t c

asca

de e

ner g

y)

Pair creation+brems.+photo-nuclear

Only pair creation

Collaboration Meeting OxfordKeiichi Mase

■ The z position of the highest energy cascade

upgoing

uniform

downgoing

Strange

even only pair creation case

Need debug

Collaboration Meeting OxfordKeiichi Mase

Log10(Primary energy) [GeV]

Log 1

0(dF

/ dLo

g 10E

) [/c

m2 /

s /sr

]

downgoing

Log10(Primary energy) [GeV]

Log 1

0(dF

/ dLo

g 10E

) [/c

m2 /

s /sr

]

upgoing

■ Weight module for JULIeT (Aya)JULIeT numerical calc.

Log 1

0(Si

mu l

a te d

Fl u

x) [/

cm2 /

s r]

Log10(Primary energy) [GeV]

upgoing

Log10(Primary energy) [GeV]Log 1

0(Si

mu l

a te d

Fl u

x) [/

cm2 /

s r]

downgoing

Simulated flux → weight

Collaboration Meeting OxfordKeiichi Mase

■ Detector response

Log10(Primary energy) [GeV]

log 1

0(To

tal N

p.e.

)

l

og10

(OM

Hit

s)

Log10(Primary energy) [GeV]

There are correlation.

Collaboration Meeting OxfordKeiichi Mase

■ Consuming time

It takes too much time for high energy (log10E > 9 GeV).

Only 1 big event

Xeon 2.4GHz

Used ProjectI3DefaultPhysicsSourceI3DefaultDetectorStatusSourceI3DefaultCalibrationSourceI3TextFileGeometrySourceI3MCCalibrationFillerI3MCRawDOMStatusFillerI3CalibrateStatusModuleI3JulietPrimaryParticleSourceI3JulietI3HitConstructorI3NoiseGeneratorModuleI3RomeoInterfaceModuleI3DOMsimulatorI3DOMcalibratorI3BoostPhysicsWriterI3BoostGeometryWriterI3BoostCalibrationWriter

Averaged over 100 events

Acceptable level (1000 events/week)5.36 s/event289 s/event

501 s/event383 s/event

+284+94

+118

← 1 hour

Collaboration Meeting OxfordKeiichi Mase

■ Summary and future plan The MC software to study EHE neutrinos are almost ready.

However, there are several problems.

strange distribution of the maximum cascade z position

It takes too much time to simulate high energy events (log10E > 9 GeV).

Other parameters and the waveform should be checked.

We will start mass production of MC events after fixing the above problems.

We will develop a reconstruction method for the EHE neutrino events.

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Backup

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■ Technical problem

When I run large number of events, I got a error.> private/dataclasses/I3DOMCalibration.cxx:84 Invalid ATWD channel in I3DOMCalibration> private/root-icetray/RootI3Tray.cxx:443 Invalid ATWD channel in I3DOMCalibration> private/root-icetray/RootI3Tray.cxx:457 Fatal exception caught: Invalid ATWD channel in I3DOMCalibration

Collaboration Meeting OxfordKeiichi Mase

Neutrino-Induced Cascades:

Signature of e and are hadronic and electro-magnetic cascades.

Neutral Current interactions of all neutrino flavors produce hadronic cascades

Background consists of atmospheric muons, emitting energetic secondaries

S

Signal and Background

~ 5 m

Collaboration Meeting OxfordKeiichi MaseBartol 2004

Angular Spectrum

1400 m

2800 m

11000mUp Down

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Events in Energy-direction plane

By Monte CarloGZK domain

Atm domain

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Energy deposit profile in km3

By the JULIeT Monte Carlo function

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IceCube EHE Sensitivity90% C.L. for 10 year observation

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Particle identification

IceCube Solid: particle

ID, direction, and energy

Shaded: energy only

(Supernova detection)

Collaboration Meeting OxfordKeiichi Mase

■ Software for EHE neutrinos

JULIeT

Photonics

ROMEO

DOM Sim

EHE propagator

Cherenkov

Detector

Electronics

2D absolute sensitivity included

saturation included

Speed improved

　→ need more.

Now, the software is almost ready.

Collaboration Meeting OxfordKeiichi Mase

■ Consuming time

It takes too much time for high energy (log10E > 9 GeV).

Only 1 big event

Xeon 2.4GHz

Used ProjectI3DefaultPhysicsSourceI3DefaultDetectorStatusSourceI3DefaultCalibrationSourceI3TextFileGeometrySourceI3MCCalibrationFillerI3MCRawDOMStatusFillerI3CalibrateStatusModuleI3JulietPrimaryParticleSourceI3JulietI3HitConstructorI3NoiseGeneratorModuleI3RomeoInterfaceModuleI3DOMsimulatorI3DOMcalibratorI3BoostPhysicsWriterI3BoostGeometryWriterI3BoostCalibrationWriter

100 events21.45s/4events1154s/4events

2003s/4events

3015s/4events

1533s/4events

Collaboration Meeting OxfordKeiichi Mase

amanda-core http://code.icecube.wisc.edu/svn/projects/amanda-core/releases/V01-00-02dataclasses http://code.icecube.wisc.edu/svn/projects/dataclasses/releases/V01-08-02dataio http://code.icecube.wisc.edu/svn/projects/dataio/releases/V02-00-01examples-offline http://code.icecube.wisc.edu/svn/projects/examples-offline/releases/V01-04-01icetray http://code.icecube.wisc.edu/svn/projects/icetray/releases/V01-05-01offline-mk http://code.icecube.wisc.edu/svn/projects/offline-mk/releases/V01-06-01phys-services http://code.icecube.wisc.edu/svn/projects/phys-services/releases/V01-07-01root-icetray http://code.icecube.wisc.edu/svn/projects/root-icetray/releases/V01-05-00ithon http://code.icecube.wisc.edu/svn/projects/ithon/releases/V01-00-01eventviewer http://code.icecube.wisc.edu/svn/projects/eventviewer/releases/V01-05-00eventviewer-modules http://code.icecube.wisc.edu/svn/projects/eventviewer-modules/releases/V01-05-00I3Db http://code.icecube.wisc.edu/svn/projects/I3Db/releases/V01-04-01analysis-tree http://code.icecube.wisc.edu/svn/projects/analysis-tree/releases/V02-03-00monolith-reader http://code.icecube.wisc.edu/svn/projects/monolith-reader/releases/V02-00-02triggerUtil-C++ http://code.icecube.wisc.edu/svn/projects/triggerUtil-C++/releases/V00-01-03DOMcalibrator http://code.icecube.wisc.edu/svn/projects/DOMcalibrator/releases/V01-00-01/ICETRAY-APP http://code.icecube.wisc.edu/svn/projects/ICETRAY-APP/releases/V01-05-00OFFLINE-SOFTWARE http://code.icecube.wisc.edu/svn/projects/OFFLINE-SOFTWARE/releases/V01-06-03DOMsimulator http://code.icecube.wisc.edu/svn/projects/DOMsimulator/releases/V01-02-01PSInterface http://code.icecube.wisc.edu/svn/sandbox/ehe_sandbox/PSInterfacec2j-icetray http://code.icecube.wisc.edu/svn/projects/c2j-icetray/releases/V02-01-01corsika++ http://code.icecube.wisc.edu/svn/projects/corsika++/releases/V01-05-02hit-constructor http://code.icecube.wisc.edu/svn/sandbox/ehe_sandbox/hit-constructormmc http://code.icecube.wisc.edu/svn/projects/mmc/releases/V00-02-04mmc-icetray http://code.icecube.wisc.edu/svn/projects/mmc-icetray/releases/V01-01-01noise-generator http://code.icecube.wisc.edu/svn/projects/noise-generator/releases/V00-01-00romeo http://code.icecube.wisc.edu/svn/projects/romeo/trunkromeo-amanda http://code.icecube.wisc.edu/svn/projects/romeo-amanda/releases/V00-00-04romeo-interface http://code.icecube.wisc.edu/svn/projects/romeo-interface/trunki3anis http://code.icecube.wisc.edu/svn/projects/i3anis/releases/V00-00-02simple-muon http://code.icecube.wisc.edu/svn/projects/simple-muon/releases/V00-00-02/juliet http://code.icecube.wisc.edu/svn/projects/juliet/trunkjuliet-interface http://code.icecube.wisc.edu/svn/projects/juliet-interface/trunkucr-icetray http://code.icecube.wisc.edu/svn/projects/ucr-icetray/releases/V00-01-00/TWRSimulator http://code.icecube.wisc.edu/svn/projects/TWRSimulator/releases/V00-00-02/cascade-generator http://code.icecube.wisc.edu/svn/projects/cascade-generator/releases/V00-00-01/examples-simulation http://code.icecube.wisc.edu/svn/projects/examples-simulation/releases/V00-10-00/topsim http://code.icecube.wisc.edu/svn/projects/topsim/releases/V00-00-01/weighting-module http://code.icecube.wisc.edu/svn/sandbox/weighting-moduleFeatureExtractor http://code.icecube.wisc.edu/svn/projects/FeatureExtractor/trunkatmo-flux http://code.icecube.wisc.edu/svn/sandbox/atmo-fluxfat-reader http://code.icecube.wisc.edu/svn/projects/fat-reader/trunk