MANTS Meeting

14 Oct 2013, 08:00 → 15 Oct 2013, 19:31 Europe/Berlin

Garching, Germany

The MANTS meeting will be in Garching, Germany near Munich on Oct 14-15. The fee for the meeting will be 150 Euros to be paid with cash upon arrival.
The banquet will be Monday night, 20:00 at CAVOS Taverna, Koeniginstraße, 34, 80802 Muenchen www.cavos-taverna.de. 

Abstracts munich-citymap2012

Slides hawc-divide-active-edge-start.jpg hawc-logo.jpg

Monday, 14 October

08:30 → 09:29 Registration All Day

09:29 → 09:30 Status and Highlights from Experiments: HE 009 - near Kim

09:30 → 09:50 IceCube: Albrecht Karle

09:30 IceCube

Status and Highlights

Speaker: Albrecht Karle (o=uwmad,ou=Institutions,dc=icecube,dc=wisc,dc=edu)

Slides IceCube_Karle_MANTS2013a.pdf

09:50 → 10:05 Antares: Juan-Jose Hernandez-Rey

09:50 ANTARES Highlights

A few selected ANTARES results will be reported.

Speaker: Juan Jose Hernandez-Rey (IFIC (CSIC-UV))

Slides Antares-MANTS-v3.0.pptx

10:05 → 10:25 Baikal / GVD: Zhan-Arys Dzhilkibaev

10:05 Baikal/GVD

The Prototyping phase of the BAIKAL-GVD project has been started in April 2011 with the deployment of a three string engineering array which comprises all basic elements and systems of the Gigaton Volume Detector (GVD) in Lake Baikal. In April 2012 the version of engineering array which comprises the first full-scale string of the GVD demonstration cluster has been deployed and operated during 2012. The first stage of the GVD demonstration cluster which consists of three strings is deployed in April 2013. We describe the configuration and design of the 2013 engineering array and discussed the first results of array operation.

Speaker: Prof. Zhan-Arys Dzhilkibaev (Institute for nuclear research)

Slides MANTS2013_BAIKAL.pdf

10:25 → 10:40 KM3Net: Uli Katz

10:25 News from KM3NeT

The KM3NeT neutrino telescope in the Mediterranean Sea is approaching the first construction phase in 2014/15. The technical solutions to be implemented will be discussed and first results of prototyping activities presented. The talk will conclude with an outlook to the future plans for KM3NeT.

Speaker: Prof. Uli Katz (ECAP / Univ. Erlangen)

Slides MANTS13_UKatz.ppt

10:40 → 11:00 Astrophysical Interpretation of IceCube Excess: Markus Ahlers

10:40 Astrophysical Interpretations of the IceCube Excess

I summarize excluded and tentative explanations of the IceCube excess and highlight multi-messenger studies.

Speaker: Markus Ahlers (o=uwmad,ou=Institutions,dc=icecube,dc=wisc,dc=edu)

Slides MANTS2013_Markus_Ahlers.pdf

11:00 → 11:29 Break

11:30 → 13:00 Low Energy: Horsal HE 008

11:30 Introducing WOM: The Wavelength-Shifting Optical Module

Large-scale underground water-Cherenkov neutrino observatories rely on single photon sensors whose sensitive area for Cherenkov photons one wants to maximise. Low dark noise rates and dense module spacing will thereby allow to substantially decrease the energy threshold in future projects. We describe a feasibility study of a novel type of single photon sensor that employs organic wavelength-shifting material (WLS) to capture Cherenkov photons and guide them to a PMT readout. Different WLS materials have been tested in lab measurements as candidates for use in such a sensor and photon capture efficiencies as high as 50 % have been achieved. Based on these findings we estimate that the effective photosensitive area of a prototype built with existing technology can easily exceed that of modules currently used e. g. in IceCube. Additionally, the dark noise rate of such a module can be exceptionally low in the order of 10 Hz. This is of special importance when targeting low-energy neutrinos that yield only few photons that need to be distinguished from noise hits

Speaker: Lukas Schulte (o=bonn,ou=Institutions,dc=icecube,dc=wisc,dc=edu)

Slides LSchulte_WOM_MANTS.pdf

12:10 PINGU Precision for Atmospheric Oscillation Parameters

...

Speaker: Mr Kai Krings (o=rwth,ou=Institutions,dc=icecube,dc=wisc,dc=edu)

Slides kkrings_mants101413.pdf

11:30 → 13:00 Simulations: Horsal HE 009

11:30 Status of simulations for ORCA

Simulation activities for the feasibility study of ORCA for measuring the neutrino mass hierarchy are described. The two mainstream simulation chains, one with a 'reference' detector and one with a dense detector are presented.

Speaker: Salvatore Galata (APC)

11:45 The km3 simulation package

The km3 simulation package is the standard software suite used by the ANTARES collaboration to simulate the emission and detection of Cherenkov photons. Here, the three programs comprising km3 are described, and the performance of km3's latest revision evaluated. Particular focus is paid to the use of the one-particle approximation, by which Cherenkov emission from hadronic cascades is simulated, and its applicability to ANTARES, KM3NeT, and ORCA.

Speaker: Dr Clancy James (University of Erlangen-Nuernberg)

Slides cwjames_km3_mants.pdf

12:05 Understanding Atmospheric Background in Neutrino Telescopes

In this presentation I'll review the importance to improve atmospheric neutrino production to probe the sources of systematics in the background estimation for neutrino telescopes. The generation of prompt components by heavy quark mesons is also discussed.

Speaker: Dr Paolo Desiati (University of Wisconsin - Madison)

Slides Paolo_Desiati.pdf

12:25 Trigger Studies for ORCA

Trigger algorithms and evaluation of trigger performances for the ORCA detector.

Speaker: Mr Tamas Gal (ECAP)

Slides Tamas_Gal_-_MANTS_2013_-_Trigger_Studies_for_ORCA.pdf

12:40 Atmospheric muons rejection for ORCA

A strong background for the observation of atmospheric neutrino induced upgoing muons is due to the presence of wrongly reconstructed muons. A strategy for the rejection of this background is presented, relying on the output of the reconstruction code "reco".

Speaker: Mr Luigi Antonio Fusco (INFN and University of Bologna)

Slides ORCA_mu_MANTS.pdf

13:00 → 14:29 Lunch will be provided

14:29 → 14:30 Future Detectors - Low Energy: HE 009 - near Kim

14:30 → 14:45 DeepCore oscillation results: Juan-Pablo Yanez

14:30 DeepCore oscillation results

Oscillation results from the first year of the completed IceCube DeepCore detector

Speaker: Mr Juan-Pablo Yanez (DESY)

Slides MANTS2013_Yanez_v1.pdf

14:45 → 15:10 Studies to PINGU's sensitivity to Neutrino Mass Hierarchy: Gross/Clark

14:45 Studies to PINGU's sensitivity to Neutrino Mass Hierarchy

Studies to PINGU's sensitivity to Neutrino Mass Hierarchy

Speaker: Andreas Gross (TU Munich)

Slides PINGU_nmh_mants.pdf

15:10 → 15:35 ORCA mass hierarchy sensitivity study: Aart Heijboer

15:10 ORCA mass hierarchy sensitivity study

ORCA mass hierarchy sensitivity study

Speaker: aart heijboer (nikhef)

Slides mants_2013.pdf

15:35 → 15:55 Intrinsic physics limitations: Clancy James / Jannik Hofestadt

15:35 Intrinsic physics limitations to reconstruction

At the characteristic energies (~20 GeV and below) at which ORCA/PINGU will look for hierarchy-dependent effects in the neutrino interaction rate, random fluctuations in the event characteristics will play a significant roll in limiting the accuracy of any reconstruction. In this contribution, the effects of such fluctuations in the determination of the energy and direction of muon tracks and shower events is investigated for neutrino interactions in seawater. These are presented as limitations both for a 'perfect' detector (all photons detected) and the reference ORCA detector, where only some photons will be detected.

Speaker: Dr Clancy James (University of Erlangen-Nuernberg)

Slides cwjames_intrinsic_limits.pdf

16:00 → 16:29 Break

16:29 → 16:30 Future Detectors - Low Energy: HE 009 - near Kim

16:30 → 16:50 Studies to PINGU's sensitivity to Neutrino Mass Hierarchy: Walter Winter

16:30 PINGU mass hierarchy sensitivity

I present an independent study of the PINGU mass hierarchy sensitivity based on the GLoBES (General Long Baseline Experiment Simulator) software, with the same methods and assumptions as used for the beam experiments. Particular attention will be given to the treatment of experiment properties and parameter correlations.

Speaker: Dr Walter Winter (Wurzburg university)

Slides Slides

16:50 → 17:10 Beam options: Jurgen Brunner

16:50 Beam options

The potential of a long baseline neutrino beam pointing towards PINGU or ORCA is discussed in the context of the neutrino mass hierarchy determination

Speaker: Mr Juergen Brunner (DESY)

Slides Beam_Options.pptx

17:10 → 18:00 Discussion

19:30 → 22:30 Social Dinner - CAVOS Taverna, Koeniginstrasse, 34 80802 Muenchen www.cavos-taverna.de

Tuesday, 15 October

09:30 → 11:00 Reconstruction: High Energy - Horsal 008

09:30 The cascade reconstruction in the Baikal experiment

A new analysis of the data from the NT200 neutrino telescope based on the reconstruction of parameters for high-energy cascades generated in neutrino interactions has yielded new upper limits on the diffuse neutrino fluxes predicted by a number of theoretical models. The upper limit on the all-flavor neutrino flux with an energy spectrum E-2 is 2.9 10-7 GeV cm-2 s-1 ster-1

Speaker: Bair Shaybonov (JINR)

Slides shaybonov_cascades.pdf

09:50 Cascade Reconstruction in IceCube

Cascade Reconstruction in IceCube

Speaker: Claudio Kopper (o=uwmad,ou=Institutions,dc=icecube,dc=wisc,dc=edu)

Slides MANTS_Cascade_Reconstruction.key MANTS_Cascade_Reconstruction.pdf

10:10 Shower reconstruction and analysis with ANTARES & KM3NeT

An overview of the shower activities in ANTARES & KM3NeT

Speaker: Florian Folger (Mr)

Slides Shower_Antares_MANTS_2013_v1_TE.pdf

10:30 Event fitting with direct event re-simulation

DirectFit, likelihood, GZK cluster

Speaker: Dmitry Chirkin (o=uwmad,ou=Institutions,dc=icecube,dc=wisc,dc=edu)

Slides DirectFit.pdf DirectFit.ppt

09:30 → 11:00 Reconstruction: Low Energy - Konferenzraum - down the stairs across from Kim into the building next door, up one flight of stairs, and follow the signs to the room

09:30 Neutrino reconstruction for PINGU

Level 2 reconstruction for PINGU is discussed in this talk. In addition to standard reconstruction algorithms used in IceCube and PINGU, it includes new reconstruction algorithms like Santa, IgelFit and HybridReco/MultiNest.

Speaker: Dr Rezo Shanidze (DESY)

Slides MANTS2013_PINGU_reco.pdf

09:45 Reconstruction and energy estimation for tracks

The reconstruction algorithm used for the ORCA feasibility study will be described. The code reconstructs the direction of muon track coming from the muon neutrino and estimates the muon energy. The performance of the algorithm will be shown.

Speaker: Agata Trovato (LNS - INFN)

Slides TrovatoMANTS_15oct2013.pdf

10:00 Reconstruction and energy estimation for tracks

Results for an alternative track reconstruction in Orca using the GridFit method developed within Antares.

Speaker: Mr Robert Bormuth (Nikhef)

10:15 Flavor Separation

The talk is about the afforts which are taken to distinguish between track-like events and shower-like events. In ORCA it is necessary to make this decision as the calculations for mass hierarchy determination is based on muon neutrinos.

Speaker: Mr Thomas Heid (ECAP)

Slides HeidMants.pdf

10:30 A particle identification algorithm for PINGU

We will describe a particle identification algorithm based on identification of "superluminal" hits -- photons arriving earlier than expected from propagation of light from a reconstructed cascade vertex.

Speaker: Ty DeYoung (o=psu,ou=Institutions,dc=icecube,dc=wisc,dc=edu)

Slides Superluminal_Hits_Cut.pdf

11:00 → 11:29 Break

11:29 → 11:30 Future Detectors - High Energy: Horsaal 008

11:30 → 11:50 Neutrino Self-Veto: Tom Gaisser

11:30 Atmospheric neutrino self-veto

Muons produced in the same event as an atmospheric neutrino will exclude the atmospheric neutrino from a sample of events required to originate inside a fiducial volume of a detector. I will discuss how the veto is evaluated for use in the IceCube High Energy Starting Event analysis.

Speaker: Thomas Gaisser (University of Delaware)

Slides Gaisser-MANTS-2013.pdf

11:50 → 12:10 Intermediate energy starting tracks: Jacob Feintzeig

11:50 Lowering IceCube's energy threshold for point source searches in the southern sky

Veto techniques are opening up new doors for point source searches in IceCube. Traditional IceCube point source analyses are only sensitive to PeV-scale fluxes in the southern hemisphere. We demonstrate that extending the “high-energy starting event” veto to lower energies allows IceCube to probe southern sky sources in the 10 TeV – 1 PeV regime. After discussing the event selection and analysis method, we will show projected sensitivities and compare them to ANTARES point source analyses.

Speaker: Jacob Feintzeig (University of Wisconsin--Madison)

Slides Munich_IC86_MANTS.pdf

12:10 → 12:30 Veto and HE Starting Events - Nathan Whitehorn

12:10 IceCube In-Ice Veto For High-Energy Starting Events

Description of event selection and in-data background estimation used in the recent IceCube high-energy results, along with other details on the analysis.

Speaker: Nathan Whitehorn (o=uwmad,ou=Institutions,dc=icecube,dc=wisc,dc=edu)

Slides mants.pdf

12:30 → 12:45 Air Cherenkov Surface Veto: Tyce DeYoung

12:30 A low energy air Cherenkov veto system

Preliminary ideas regarding a surface veto array based on simple imaging air Cherenkov telescopes will be presented. Early studies suggest that cosmic ray primaries responsible for atmospheric neutrinos above an energy threshold of a few TeV could be tagged efficiently.

Speaker: Tyce DeYoung (o=psu,ou=Institutions,dc=icecube,dc=wisc,dc=edu)

Slides ACT_Veto_MANTS.pdf

12:45 → 13:44 Lunch

13:44 → 13:45 Future Detectors - High Energy: Horsaal 008

13:45 → 14:00 Considerations for surface veto strategies / IceVeto: Albrecht Karle / Jan Auffenberg

13:45 Considerations for a surface veto array and a look at event rates

I will have a brief look at a surface veto array upgrade. Simulated event rates in IceCube suggest that surface veto detectors will add of order 10 muon neutrino events after atmospheric veto cut depending the threshold. Such strategies may offer benefits for lower energy source searches. They need to be compared to other muon neutrino search channels.

Speaker: Albrecht Karle (o=uwmad,ou=Institutions,dc=icecube,dc=wisc,dc=edu)

Slides Albrecht_HEExtensions_Mants.pdf

14:00 → 14:20 Multi-string extensions / IceCube ++ studies: Christopher Wiebusch / David Altmann

14:00 DecaCube Part I

Part I

Speaker: Mr David Altmann (o=humboldt,ou=Institutions,dc=icecube,dc=wisc,dc=edu)

Slides decacube_combined.pdf decacube_mants_meeting_part_I.pdf

14:10 DecaCube - IceCube++ - Part II

C

Speaker: Prof. Christopher Wiebusch (o=rwth,ou=Institutions,dc=icecube,dc=wisc,dc=edu)

Slides Mants_DekaCube.pdf

14:20 → 14:40 KM3NeT options: Rosa Coniglione

14:20 KM3NeT and diffuse flux: first preliminary results

The prediction on diffuse flux for the KM3NeT will be shown.

Speaker: Dr Rosa Coniglione (INFN-Laboratori Nazionali del Sud)

Slides diffuse_MANTS_1.pdf

14:40 → 14:59 Discussion

14:59 → 15:00 Future Directions in Neutrino Astronomy: Horsaal 008

15:00 → 15:20 Global Neutrino Telescope Coordination: Christian Spiering / TBD

15:20 → 16:00 Panel Discussion