XIV International Workshop on Neutrino Telescopes

15 Mar 2011, 09:00 → 18 Mar 2011, 14:00 Europe/Rome

Mauro Mezzetto (PD)

Tuesday, 15 March

09:15 → 10:45 Tuesday Morning Session I

Convener: Prof. Carlo Bemporad (INFN, Pisa)

09:15 Neutrino Oscillations Measurements: Past and Present

Speaker: Prof. Art McDonald (Queen's University)

Slides McDonaldNeuTel2011Venicepdf.pdf McDonaldNeuTel2011Venice.pptx

09:55 Overview of Neutrino Physics Phenomenology

Speaker: Dr Eligio Lisi (INFN Bari)

Slides Lisi_NEUTEL_2011.pdf

10:20 Solar Neutrinos and the Sun

Speaker: Dr Aldo Serenelli (Institute of Space Sciences, Bellaterra)

Slides serenelli_neutel11.pdf

10:45 → 11:15 Coffee Break

11:15 → 13:10 Tuesday Morning Session II

11:15 SuperKamiokande

Speaker: Prof. r.jeffrey Wilkes (University of Washington, Seattle)

Slides superk-wilkes.pdf.pdf superk-wilkes.ppt.ppt

11:45 SNO Results & SNO+

Speaker: Prof. Steven Biller (Oxford University)

Slides Biller_Venice2011.pptx

12:15 GeoNeutrinos

Speaker: Prof. Gianni Fiorentini (INFN Laboratori Nazionali Legnaro)

Slides Fiorentini.ppt

12:40 Borexino

Speaker: Dr Emanuela Meroni (INFN Milano)

Slides Borex_EMeroniNeuTel2011.pdf

13:10 → 15:00 Lunch

15:00 → 16:20 Tuesday Afternoon Session I

15:00 OPERA

Speaker: Dr Laura Patrizii (INFN Bologna)

Slides Patrizii.pdf

15:25 ICARUS and Status of the Liquid Argon Technology

Speaker: Dr Francesco Pietropaolo (INFN Padova)

Slides Neutel-Pietropaolo.ppt

15:50 MINOS

Speaker: Dr Luke Corwin (Indiana University)

Slides Neutel2010MINOSCorwin.pdf

16:20 → 16:50 Coffee Break

16:50 → 18:30 Tuesday Afternoon Session II

16:50 Physics of Neutrinoless Double Beta Decay

Speaker: Prof. Francesco Iachello (Yale University)

Slides iachello-venice.pdf

17:20 Sense and Sensitivity of Double Beta Decay Experiments

Speaker: Prof. Juan Jose Gomez-Cadenas (IFIC Valencia)

Slides SenseAndSensiVeniceJJGomez.pdf

17:50 CUORE

Speaker: Dr Chiara Brofferio (MIB)

Slides Cuore.pdf

18:10 GERDA

Speaker: Prof. Stefan Schönert (Technische Universität München)

Slides GERDA_nutel2011.ppt

Wednesday, 16 March

09:00 → 10:20 Wednesday Morning Session I

09:00 Results from the MEG Experiment

Speaker: Alessandro Massimo Baldini (PI)

Slides MEG.pptx

09:25 Lepton Flavor Violation and Neutrino Physics

Speaker: Paride Paradisi (TU of Munich)

Slides neutel_paradisi.pdf

09:55 Neutrinos and SuperNovae

Speaker: Dr Cristina Volpe (IPN Orsay)

Slides neutel-volpe.ppt

10:20 → 10:50 Coffee Break

10:50 → 12:30 Wednesday Morning Session II

10:50 Cosmology and Neutrino Masses

Speaker: Alessandro Melchiorri (RM1)

Slides venice2011-Melchiorri.pptx

11:20 Direct Dark Matter Searches: Fits to the WIMP Candidates

Speaker: Graciela Gelmini (UCLA)

Slides Fits-Light-WIMPs.pdf

11:50 Results from the XENON100 Experiment

Speaker: Elena Aprile (Columbia University)

Slides aprile_Venice2011.pdf

12:30 → 14:30 Lunch

14:30 → 16:15 Wednesday Afternoon Session I

Convener: Prof. Antonio Masiero (INFN, Padova)

14:30 Neutrino Mass Models: how could be constrained by Results from Neutrino Oscillations?

Speaker: S.F. King (University of Southampton)

Slides Neutel11_sfk.pdf

14:55 New Physics in the Atmospheric Sector: non-Standard Interactions and CPT Violation.

Speaker: Michele Maltoni (Universidad Autónoma de Madrid)

Slides seminar-maltoni.pdf

15:20 The Reactor Antineutrino Anomaly.

Speaker: Thierry Lasserre (CEA Saclay)

Slides Lasserre-Neutel2010.pdf

15:50 Reactor Anomaly, Theta13, and Sterile Neutrinos

Speaker: Thomas Schwetz (Max-Planck-Institute for Nuclear Physics)

Slides neutel-2011-schwetz.pdf

16:15 → 16:45 Coffee Break

16:45 → 18:55 Wednesday Afternoon Session II

16:45 T2K Results

Speaker: Andre Rubbia (ETH Zurich)

Slides Rubbia_T2K_Venice_160311v4.pdf

17:25 NOvA

Speaker: Alexandre Sousa (Harvard University)

Slides NOvA_Neutel2011_Sousa.pdf

17:45 Double Chooz

Speaker: Anatael Cabrera Serra (IN2P3/CNRS-APC)

Slides DCNueTel_Anatael1103_SMALL.pdf

18:05 Daya Bay and Future Prospects

Speaker: Prof. Yifang Wang (Institute of High Energy Physics Beijing)

Slides DYB-venice.pdf

18:35 RENO

Speaker: Soo-Bong Kim (Seoul National University)

Slides RENO.pdf

19:30 → 21:30 Poster session

19:30 Opportunities of Gallium experiments with artificial neutrino sources for investigation of transition to sterile states

The search for sterile neutrinos, as well as for CP and CPT violation in the neutrino sector is now a field of most active investigation. The unexpectedly low capture rate of neutrinos in Ga source experiments in SAGE as well as in GALLEX can be explained by assuming transitions from active to sterile neutrinos occur with mass-squared difference Δm2 about 1 eV2. This interpretation agrees with the results of reactor experiments Bugey, Chooz, and Goesgen and the accelerator experiments LSND and MiniBooNE. We propose to place a very intense source of 51Cr at the center of a 50-tonne target of gallium metal that is divided into two zones and to measure the neutrino capture rate in each zone. The proposed experiment has the potential to test neutrino oscillation transitions with mass-squared difference Δm2 > 0.5 eV2. This capability exists because the experiment uses a compact nearly monochromatic neutrino source with well-known activity, the dense target of Ga metal provides a high interaction rate, and the special target geometry makes it possible to study the dependence of the rate on the distance to the source. The sensitivity to disappearance of electron neutrinos is expected to be a few percent.

Speaker: Valery Gorbachev (INR, Moscow.)

19:32 From paired super-radiance to neutrino mass spectroscopy using atoms

We present some preliminary results of our experiment which aims to prove the principle of the “macro-coherent amplification mechanism”, a new amplification mechanism which exploits coherence of particles involved in de-excitation processes. When this mechanism is in operation, decay rates, such as emission of neutrino-pair and photon from excited atoms, become proportional to N2 (not to N), where N is the number of excited atoms in a coherent volume. Unlike Dicke’s super-radiance, which is also a coherent phenomenon (and thus ∝ N2), its coherence volume can be made macroscopic when a certain phase matching condition is satisfied among the outgoing particles. Our ultimate goal is to use this mechanism for investigating neutrino properties: determination of the absolute mass scale, Dirac/Majorana distinction, and measurement of Majorana phases, among others.

Speaker: N. Sasao (Okayama University)

19:33 LUCIFER: A Scintillating Bolometer Array for the Search of Neutrinoless Double Beta Decay

In recent years important results have been obtained in the study of neutrino's properties, but the fundamental character of the particle (Dirac or Majorana) and its absolute mass are still open questions. Neutrinoless Double Beta Decay (DBD) is a unique tool to discriminate the neutrino nature, since the observation of this rare process would imply that neutrinos are Majorana particles and would set a limit on the mass of the electron neutrino. Bolometric detectors are particularly suitable for the search of DBD: they can provide a good versatility in the choice of material and they can achieve a good energy resolution, a high electronciency and a low background. The last point, in particular, represents the main challenge for the next generation experiments. A major role in this ^Leld could be played by LUCIFER (Low-background Underground Cryogenic Installation For Elusive Rates), whose goal is the study of the DBD of 82Se through the achievement of a background on the order of 0.001 counts/kg/keV/year. The LUCIFER detector will be an array of ZnSe scintillating bolometers. The simultaneous measurement of the heat and of the light emitted by an interaction will allow to discriminate between diㄦent interacting particles, providing thus a disentangled and reduced background. In this poster the scintillating bolometers technique will be presented, as well as the features of the ZnSe crystals and the expected performances.

Speaker: Laura Cardani (Universita di Roma La Sapienza)

19:34 Improving the KM3NeT sensitivity

KM3NeT is a future European research infrastructure that will host a neutrino telescope with an instrumented volume of at least one cubic kilometre, located at the bottom of the Mediterranean Sea at a depth of several kilometres. Detection of high-energy neutrinos from distant astrophysical sources or from annihilation of dark matter particles will open a new window on the Universe. The detection principle exploits the measurement of Cherenkov light emitted by charged particles resulting from neutrino interactions in the matter surrounding the telescope. The innovative KM3NeT detection units will be instrumented with multi-PMT optical modules (OM) containing 31 3-inch phototubes. The segmentation of the detection area in the OM will aid in distinguishing single-photon from multi-photon hits. Moreover, two-photon hits can be unambiguously recognized if the two photons hit separate tubes, which occurs with 85% probability for photons arriving from a particular direction. Small phototubes can offer a quantum efficiency above 30%, provide a small transit time spread and are do not require shielding from the Earth’s magnetic field. Three companies ET Enterprises, Hamamatsu and MELZ-FEU develop new types of 3-inch PMTs for the KM3NeT project. First PMT samples have been delivered from the companies and tested. These results are presented. In order to maximize the detector sensitivity, each phototube in the multi-PMT OM will be surrounded by a reflector cone designed to collect photons that would normally miss the photocathode, thus effectively increasing the effective photocathode area. Measurements will be presented that indicate an increase of the effective photocathode radius by about 8 mm. Light propagation studies have shown that an increase in the overall sensitivity by 25% is possible.

Speaker: Dr Oleg Kalekin (Erlangen Centre for Astroparticle Physics, University of Erlangen)

19:35 Uncovering Multiple CP-Nonconserving Mechanisms of Neutrinoless Double Beta Decay

We consider the possibility of several different mechanisms contributing to the Neutrinoless Double Beta Decay amplitude in the general case of CP nonconservation: light Majorana neutrino exchange, heavy left-handed (LH) and heavy right-handed (RH) Majorana neutrino exchanges, lepton charge non-conserving couplings in SUSY theories with R-parity breaking. If the Neutrinoless Double Beta Decay is induced by, e.g., two ``non-interfering'' mechanisms (light Majorana neutrino and heavy RH Majorana neutrino exchanges), one can determine the absolute values of the two fundamental parameters, characterising these mechanisms, from data on the half-lives of two nuclear isotopes. In the case when two ``interfering'' mechanisms are responsible for the Neutrinoless Double Beta Decay, the absolute values of the two relevant parameters and the interference term can be uniquely determined from data on the half-lives of three nuclei. The method considered by us can be generalised to the case of more than two $\betabeta$-decay mechanisms. It has also the advantage that it allows to treat the cases of CP conserving and CP nonconserving couplings generating the $\betabeta$-decay in a unique way.

Speaker: Aurora Meroni (SISSA, Trieste)

19:36 SNO+ experiment as a Neutrino Telescope

SNO+ is a large scale liquid scintillator detector that is the successor experiment to the Sudbury Neutrino Observatory, located in SNOLAB near Sudbury, Canada. SNO+ is under construction and will detect neutrinos using a 12m diameter acrylic sphere filled with approximately 800 tonnes of liquid scintillator and monitored by about 10,000 photomultiplier tubes. We plan to study solar neutrinos, supernova neutrinos, geo neutrinos and reactor neutrinos as well as neutrinoless double beta decay. Supernova relic neutrinos (the diffuse supernova neutrino background) are also an interesting physics goal. Because of the very small muon rate and smaller reactor flux than KamLAND, the sensitivity to supernova relic neutrinos at lower energies will be very good. In this poster, "SNO+ experiment as a neutrino telescope" will be presented. The main focus is on the physics goals for solar neutrinos and supernova neutrinos. Preliminary studies of the supernova relic neutrino sensitivity will also be presented.

Speaker: Takashi Iida (Queen's University)

19:37 Leptogenesis in a scenario inspired to SO(10) with a compact spectrum for the right-handed neutrinos

In the framework of the see-saw model and reasonoble hypotheses within SO(10), Dirac matrix with hyerarchical eigenvalues and mass and flavour eigenvectors related by a matrix similar to the CKM matrix, one may obtain the scenario where baryogenesis is realized through leptogenesis and get predictions for the neutrino masses in tritium and in double neutrino-less beta decays

Speaker: Franco Buccella (Universita di Napoli)

19:38 Effects of Resonant Spin-Flavor Conversion of Supernova Neutrinos in Supernova Neutrino Event

If neutrinos are Majorana particles and have finite transition magnetic moment with about 10−12μB, where μB is Bohr magnetons, a spin precession between a left-handed neutrino and a right-handed antineutrino with different flavor occurs in strong magnetic field. This is called resonant spin-flavor (RSF) conversion. Supernova (SN) neutrino event is one of the most promising neutrino events to find evidence for the RSF conversion. The magnetic field of Fe core of a presupernova star is evaluated to become about 1010 gauss. Observations of pulsars indicated that neutron stars have magnetic field of about 1012 gauss. Such a strong magnetic field in the innermost region of a SN ejecta would allow the flavor change by the RSF conversion. Recent studies of SN explosions indicated that a SN forms a hot-bubble region above the neutrino sphere and that electron-mole fraction Ye in this region exceeds 0.5 in several seconds after the core collapse. We investigated the dependence of the RSF conversion and SN neutrino spectra on electron-mole fraction using a SN explosion model of a 15M⊙ star. The RSF conversion of nubar(e) $ nu(mu,tau) occurs at a high RSF resonance in normal mass hierarchy and Ye > 0.5 or inverted mass hierarchy and Ye < 0.5. In other cases, the RSF conversion of e $ ¯μ, occurs. If SN neutrinos are affected by the RSF conversion and the Ye value in the hot-bubble region changes with time, largetime variation of the SN neutrino spectra would be observed. When the adiabaticity of a high RSF resonance changes by the shock passage, the SN neutrino spectra also change. In the poster presentation, we show the time variation of the event number ratio of low nubar(e) energy to high nubar(e) energy as the SN neutrino spectra. We discuss the dependence of the time variation of the event number ratio on neutrino oscillation parameters and neutrino magnetic moment.

Speaker: Takashi Yoshida (Department of Astronomy, University of Tokyo)

19:39 Remarks on the forces generated by two-neutrino exchange

We have evaluated the effect of neutrino masses on the long--range potential due to the exchange of a neutrino-antineutrino pair between two particles carrying weak charge. We considered in particular two electrons. This brings up--to--date calculations present in the literature for massless neutrinos. We considered for the first time the effect of a hypothetical neutrino magnetic moment on the potential. We noted that these terms are very often dominant over the weak contribution to the potential but it still remain too small to be observable.

Speaker: Silvano Petrarca (Universita di Roma La Sapienza)

19:40 A road to reach higher precision in Borexino: the detector calibration campaigns

Borexino is an experiment designed for real‐time detection of low energy solar neutrinos. It is installed at the Gran Sasso Underground Laboratory and started taking data in May 2007. So far, Borexino’s main results are the first direct measurement of the 7Be solar neutrino signal rate, the measurement of the 8B solar neutrino flux, with 2.8 MeV energy threshold, and the observation of geo‐neutrinos signal. Borexino is confirming the LMA‐MSW solution of the neutrino oscillation scenario by providing new data about the neutrino survival probability as a function of the neutrino energy and proving the absence of a day‐night asymmetry in the 7Be neutrino signal. In this contribution I present the results of the detector calibration campaigns completed in 2009 by the Borexino collaboration. This work was carried out to better understand the detector response in order to improve the 7Be neutrino measurement. Several radioactive sources have been deployed within the inner part of the detector by means of a carefully designed insertion system. The sources were selected in order to study the detector response in the energy region between 122 keV and 7 MeV, with α, β, γ and neutrons.

Speaker: Alessandra Carlotta Re (Universita' degli Studi e INFN di Milano)

19:41 A T' flavour model for fermions and its phenomenology

I will present a supersymmetric flavour model based on the T' discrete group, which explains fermion masses and mixings. The flavour symmetry, acting in the supersymmetric sector, provides well defined sfermion mass matrices and the resulting supersymmetric spectrum accounts for sufficiently light particles that could be seen at LHC. Furthermore, several FCNC processes are switched on and they can be useful to test the model in the present and future experiments. I will review the main results both for the lepton and for the quark sectors.

Speaker: Luca Merlo (Technische Universität München)

19:42 Beta spectroscopy with superconducting calorimeters for the direct measurement of the neutrino mass

The neutrino mass scale is a relevant parameter of the theoretical framework beyond the Standard Model of particle physics. Cosmology constrains to 10meV the sensitivity required for future neutrino mass experiments, that means a huge effort of improving present instrumentation and technology. In this work we show a calorimetric approach for the direct measurement of the neutrino mass by means of 187Re single β decay and 163Ho electron-capture decay. An high sensitivity is achievable thanks to the high responsivity of superconducting microcalorimeters and their low intrinsic noise.

Speaker: Daniela Bagliani (Universita di Genova and INFN)

19:43 Monte Carlo simulation study of the muon-induced neutron flux in LNGS

The ultimate background for all the experiments looking for rare events in underground laboratories is represented by muon-induced neutrons. Their typical flux is three order of magnitude smaller than the flux of neutrons produced by radioactivity, but the former have an harder energy spectrum and they can travel far away from the muon track, thus they are very difficult to shield. The LVD experiment, located at LNGS, consists of a 1000 ton of liquid scintillator and its main goal is the search for neutrinos from Gravitational Stellar Collapses in our Galaxy. LVD can detect both neutrons and muons so it is well suited for studing neutrons induced by cosmic muons. In this work we present the full Monte Carlo simulation, developed in the framework of Geant4, that allowed us to extimate the muon-induced neutron flux coming from the rock and to measure the neutron yield in liquid scintillator and iron. The former has been found in agreement with other measurement while the neutron yield in iron represent the first measurement. The simulation has been also used to evaluate the requirement and the performances of the shield for a dark matter experiment at LNGS.

Speaker: Rino Persiani (Universita di Bologna e INFN)

19:44 Neutrino Mass Hierarchy Determination using Reactor Antineutrinos

Building on earlier studies, we investigate the possibility to determine the type of neutrino mass spectrum (i.e., "the neutrino mass hierarchy") in a high statistics reactor electron antineutrino experiment with a relatively large KamLAND-like detector and an optimal baseline of 60 Km. We analyze systematically the Fourier Sine and Cosine Transforms (FST and FCT) of simulated reactor antineutrino data with reference to their specific mass hierarchy-dependent features discussed earlier in the literature. We perform also a binned \chi2 analysis of the sensitivity of simulated reactor electron antineutrino event spectrum data to the neutrino mass hierarchy, and determine, in particular, the characteristics of the detector and the experiment (energy resolution, visible energy threshold, exposure, systematic errors, binning of data, etc.), which would allow us to get significant information on, or even determine, the type of the neutrino mass spectrum. We find that if \sin2 2\theta_{13} is sufficiently large, \sin2 2\theta_{13} \gtap 0.02, the requirements on the set-up of interest are very challenging, but not impossible to realize.

Speaker: Pomita Ghoshal (SISSA, Trieste)

19:45 The 14N(p,g)15O reaction and the metallicity of the Sun

Speaker: Antonio Caciolli (INFN, Padova)

19:46 An array of ring-lasers to measure the Frame Dragging of the Earth

It has been well known for many years that ring lasers, angular velocity inertial sensors, can be used to measure the Frame Dragging (Lense-Thirring effect) of the Earth provided that the sensor drift can be controlled sufficiently. The ring Laser G in Wettzell (Germany) has shown that a sensitivity of 20nrad/s/sqrt(Hz) can be achieved routinely. Both, sensitivity and accuracy improvements are expected in the near future due to tighter control loops on the system and improvements in mirror making. The 3 groups (NewZealand, Germany and Italy) who work on this kind of devices, have been sharing their experience in order to improve the instrument as much as possible. As a result of this joint effort a new prototype ring will be built in NewZealand in 2011. The Italian group runs the middle size ring G-Pisa, which operates in the central area of Virgo gravitational waves antenna at the moment . Based on the results of G, we have worked out that a system of 6 large gyros will be able to reconstruct the Lense-Thirring effect with a precision of at least 10% in about a month of integration. Improvements in the accuracy of the device would improve the results and 1% of accuracy seems feasible with measurements summing over a few years. Essential for our test is the comparison with the Earth angular rotation as provided by the IERS. In order to reach this ambitious goal, our project requires the construction of a sensor of 2 components, each consisting of two parallel ring lasers, collocated, and oriented along two different axis of orientation, making 4 rings in total. Each ring will be built using the economic modular design, pioneered in the GEOSENSOR project. It is actively controlled using a servo system. The perimeter will be around 24 m, and the geometry should be close to a square with an accuracy of the order of 1 part in 105. We plan to install and test our system in an underground laboratory, such us Laboratori Nazionali del GranSasso (LNGS), in order to reduce the top soil perturbations seen in our other sensors and to achieve very high thermal stability. Beyond fundamental physics, this experiment would be very important for geodesy and geophysics.

Speaker: Angela Di Virgilio (INFN, Pisa)

19:47 A new design for the CERN-Frejus neutrino Super Beam

We present an optimization of the hadron focusing system for a low-energy high intensity conventional neutrino beam (Super-Beam) proposed on the basis of the HP-SPL at CERN with a beam power of 4 MW and an energy of 4.5 GeV. The far detector would be a 440 kton Water Cherenkov detector (MEMPHYS) located at a baseline of 130 km in Fr\'ejus site. The neutrino fluxes simulation relies on a new GEANT4 based simulation coupled with an optimization algorithm based on the maximization of the sensitivity limit on the $\theta_{13}$ mixing angle. A new configuration adopting a multiple horn system with solid targets is proposed which improves the sensitivity to theta(13) and the CP violating phase delta(CP).

Speaker: Andrea Longhin (INFN, Laboratori Nazionali di Frascati)

19:48 The MEMPHYS Project

MEMPHYS is a proposed megaton‐scale Water Cherenkov experiment to be performed deep underground. It is dedicated to nucleon decay searches, neutrinos from supernovæ, solar and atmospheric neutrinos, as well as neutrinos from a future Super‐Beam or β‐Beam to measure the mixing angle θ13, the CP violating phase δ and the mass hierarchy. We will summarize the latest studies on the physics reach of MEMPHYS and on possible candidate sites for its installation in Europe. New photodetection and data acquisition solutions, such as grouped readout systems, are mandatory for very large‐scale detectors, to improve their feasibility and cost effectiveness. One R&D item currently being carried out is MEMPHYNO, a small‐scale prototype with the main purpose of serving as a test bench for new detection and data acquisition devices. Its status and perspectives will be shown.

Speaker: Alessandra Tonazzo (APC Paris)

19:49 Discovery potential of a future very large underwater neutrino telescope in the Mediterranean Sea

We report on the evaluation of the performance of the Mediterranean Very Large Volume Neutrino Telescope, KM3NeT. We present results of our studies concerning the capability of the telescope in detecting/discovering galactic (steady point sources) and extragalactic, transient (Gamma Ray Bursts) high energy neutrino sources as well as measuring ultra high energy diffuse neutrino fluxes. The discovery potential of the neutrino telescope is evaluated for several detector configurations assuming various environmental parameters.

Speaker: Apostolos Tsirigotis (Hellenic Open University)

19:50 Measurements of neutron spectra characteristics using NaCl in LVD

The main goal of LVD detector is the search for neutrino bursts from gravitational stellar collapses in our Galaxy. Adding NaCl to the detector structure allow to increase neutron detection efficiency up to ~20% and thereby increase the number of antineutrino interactions according to standard collapse model. Also it make possible to detect more neutrino interactions for non-standart collapse model.

Speaker: Irina Shakiryanova (INR, Moscow.)

19:51 Analysis of the temperature variations of neutrons generated by muons in the detector LVD.

Russian-Italian large volume detector LVD is located in the Gran Sasso National Laboratory underground at the depth of 3300 m w.e. Data of neutrons generated by muons from April 2003 were analysed to study the seasonal modulation of the cosmic ray penetrating component. Variations of neutron generated by muons were found with a time period of 1 year, with the maximum intensity in July in the agreement with theoretical predictions.

Speaker: Olga Ryazhskaya (INR, Moskow.)

19:52 he T2K TPC calibration tools and relation to physics results

The time projection chambers (TPCs) of the near detector complex, ND280, of the T2K experiment, are presently the main tool for both the tracking and particle identification of charged particles. The calibration of TPCs comprises two main steps: the "low level calibration" (requiring no resonstruction input), related to the charge calibration, and important for the particle identification; and the "high level calibration" (using reconstruction input), including from the drift velocity calibration up to the corrections applied for electric and magnetic field distortions. We present a summary collection of the methods and tools used, and results demonstrating the importance of the calibration effort for the present and future physics results.

Speaker: Panagiotis Stamoulis (IFIC Valencia)

19:53 "Status and performance of ND280, the T2K near detectors"

The T2K near detector suite at 280m distance from the J-PARC neutrino production target (ND280) consists of an on-axis detector (INGRID), and a set of tracking and scintillator detectors inside a 0.2T magnetic field, positioned at the same off-axis angle as the Super-Kamiokande far detector (P0D, SMRD, TPCs, FGD and ECALs). The ND280 detectors will be described, and examples of their performance during the initial neutrino data-taking runs will be reported.

Speaker: Jeffrey Wilkes (University of Washington, Seattle)

19:54 Efforts towards a measurement of charged current quasi-elastic neutrino interactions in ND280.

The peak energy of the very narrow-band neutrino beam that the T2K experiment uses, was selected in such a way that the big majority of neutrino interactions seen in the near detector complex of the T2K experiment, ND280, will be charged-current quasi-elastic (CCQE) interactions. One of the main components of ND280, is the "tracker": a system of alternating finely segmented scintillator-based tracking detectors (fine-grained detectors, FGDs) and time projection chambers (TPCs). The combination of substantial fiducial mass, track and particle identification (PID) information from the FGDs, with the superior tracking and PID capabilities of the TPCs, present an excellent opportunity for detailed measurement of the CCQE interactions in the ND280 detector. We present a detailed Monte-Carlo study of a possible approach to the measurement of CCQE interactions in the ND280 tracker, using mainly the FGD and TPC systems, study possible backgrounds and discuss possible future extentions of the method, before applying it to the actual ND280 data set.

Speaker: Lorena Escudero (IFIC, Valencia)

19:55 Study of Neutrino Interactions Using the Electronic Detectors and Emulsion-Lead Targets of the OPERA Experiment

The OPERA experiment is based on a hybrid technology combining electronic detectors and nuclear emulsions. OPERA collected muon-neutrino interactions during the 2008, 2009 and 2010 physics runs of the CNGS neutrino beam, produced at CERN with an energy range of about 5-35 GeV. A total of 5.3 1019 protons on target equivalent luminosity from the 2008-2009 sample has been analysed using the measurements in the electronic detectors. Charged Current (CC) and Neutral Current (NC) interactions are identified and the NC/CC ratio is computed. The momentum distribution and the charge of the muon tracks produced in CC interactions are analysed. For CC events the Bjorken-y distribution is also measured. Measurements are compared to Monte-Carlo expectations. The OPERA neutrino target brick, based on the so-called Emulsion Cloud Chamber (ECC) technique, of dimensions 12.7x10.2x7.5 cm3, is composed by a sequence of 56 lead plates (1 mm thick) and 57 emulsion films (44μm thick emulsion layers on either side of a 205μm thick plastic base). The total length of a brick corresponds to about 10 X0 where X0 is the radiation length in lead. The angular resolution of the emulsions allows, using the multiple Coulomb scattering of the tracks in the lead plates, the determination of charged particle momentum from several hundreds of MeV/c to a few GeV/c. This range corresponds to the momentum range of secondary hadrons produced in neutrino interactions in the OPERA experiment. Momentum measurements performed by the electronic detectors on soft muon tracks are also compared to the measurement performed in the OPERA emulsion films.

Speaker: Dr Kose Umut (INFN, Padova)

19:56 The Muon Ionization Cooling Experiment

The Muon Ionization Cooling Experiment (MICE) is a high-precision, accelerator experiment being performed at Rutherford Appleton Laboratory in the UK, using particle physics techniques. Its goal is the first demonstration, with 0.1% resolution, of the feasibility of reducing the transverse emittance (beam volume in 4D phase space) of a beam of muons by ionization cooling in low-Z absorbers. Ionization cooling will be a key technique used in creating beams of muons for high-intensity Neutrino Factory(ies) and Muon Collider(s) of the future. MICE is being staged in the following steps: I. Creating and characterizing a beam of muons; II. Measuring their emittance; III. Systematic comparison of successive measurements; IV. Inserting absorber; V. Reaccelerating longitudinally; and VI. Complete ``10%-cooling" test. Step I has recently been completed and preliminary results will be shown.

Speaker: Dr Pierrick Hanlet (Illinois Institute of Technology &amp; Fermilab)

Thursday, 17 March

09:00 → 10:30 Thursday Morning Session I

09:00 Results from the MiniBooNE Experiment

Speaker: Dr Geoffrey Mills (Los Alamos National Laboratory)

Slides NEUTEL2011-Geoffrey-Mills.pdf

09:25 Sterile Neutrino Fits

Speaker: Carlo Giunti (INFN)

Slides giunti-110317-neutel.pdf

09:50 Searches for Sterile Neutrinos

Speaker: Prof. Carlo Rubbia (Laboratori Nazionali del Gran Sasso)

Slides Rubbia-iCARUS.ppt

10:30 → 11:00 Coffee Break

11:00 → 12:45 Thursday Morning Session II

11:00 Neutrino Experiments at the ESS

Speaker: Dr Axel Steuwer (ESS, Lund)

Slides ESS-NEUTEL.pdf

11:25 Neutrino Cross Sections and the MINERvA Experiment

Speaker: Dr Vittorio Paolone (University of Pittsburgh)

Slides MINERVA_NuTel_vp_031711_finalv.pdf

11:55 Results from Hadroproduction Experiments

Speaker: Boris Popov (JINR Dubna and LPNHE, Univ. of Paris VI and VII)

Slides hadro_venice11_short.pdf

12:20 Leptogenesis and Neutrino Masses

Speaker: Pasquale Di Bari (PD)

Slides dibari_NEUTEL11.pdf

12:45 → 14:35 Lunch

14:35 → 16:15 Thursday Afternoon Session I

14:35 Future Neutrino Beams at CERN

Speaker: Dr Ilias Efthymiopoulos (CERN)

Slides CERN-Neutel.pdf

15:00 Neutrino Super Beams at Fermilab

Speaker: Prof. Stephen Parke (Fermilab)

Slides neutel_parke.pdf

15:25 Beta Beams

Speaker: Dr Elena Wildner (CERN)

Slides Neutel11-Wildner.ppt

15:50 Neutrino Factories

Speaker: Prof. Ken Long (Imperial College, London)

Slides 2011-03-17-Long-NeuTel.pptx

16:15 → 16:45 Coffee Break

16:45 → 17:55 Thursday Afternoon Session II

16:45 LAGUNA

Speaker: Prof. Andre Rubbia (ETH Zurich)

17:10 DUSEL

Speaker: Dr Mary Bishai (BNL)

Slides neutel11_bishai.pdf

17:35 DAEdALUS

Speaker: Dr Jose Alonso (MIT)

Friday, 18 March

09:00 → 11:10 Friday Morning Session I

09:00 Physics with Neutrino Telescopes

Speaker: Prof. Teresa Montaruli (Wisconsin University, Madison)

Slides NeutrinoTelescopes_TM.pdf

09:30 Predicting Galactic Neutrino Fluxes from Gamma Ray Data

Speaker: Prof. Felix Aharonian (Dublin Institute for Advanced Studies (DIAS))

09:55 Diffuse Neutrino Fluxes

Speaker: Dr Juergen Brunner (CPPM Marseille)

Slides DiffuseSearch-short.ppt

10:15 Cosmogenic Neutrinos

Speaker: Prof. Subir Sarkar (Oxford University)

Slides Sarkar_NeuTel'11.pdf

10:40 IceCube: Status and Developments

Speaker: Prof. Tom Gaisser (University of Delaware)

Slides Gaisser-Venice-v1b.pdf

11:10 → 11:40 Coffee Break

11:40 → 13:50 Friday Morning Session II

11:40 What do we know about the Origin of Cosmic Rays?

Speaker: Dr Paolo Lipari (INFN Roma)

Slides lipari_ven2011.pdf

12:10 Results from the AUGER and other UEHCR experiments

Speaker: Prof. Sergio Navas (Universidad de Granada)

Slides SergioNavas_UHENu_AUGER_NeuTel11.pdf

12:40 Antares

Speaker: Prof. Paschal Coyle (CPPM Marseille)

Slides antares-coyle.pptx

13:00 KM3NeT

Speaker: Dr Piera Sapienza (INFN, Laboratori Nazionali del Sud)

Slides SapienzaNeutel2011.ppt.ppt

13:20 Perspectives in Neutrino Physics

Speaker: Prof. Guido Altarelli (Universita Roma 3 and CERN)

Slides Altarelli_Venezia'11.pdf