Event calendar file
19-22 June 2012
Erlangen Castle (centre of town)
Europe/Berlin timezone
Home > Contribution List
Displaying 58
contributions
out of
58
The calibration and design of an eighth hydrophone linear array has been developed for the generation of emulated Ultra High Energy (UHE) neutrino-induced pulses. This acoustic array simulates the acoustic pulse created from a UHE neutrino interaction in water by generating a coherently emitted acoustic bipolar pulse. The calibrator is developed using signal processing methods using experimental
... More
Presented by sean DANAHER
on
21 Jun 2012
at
10:20
A fast semi-analytic frequency domain calculation for the radio emission from cosmic ray air showers is presented. The shower is treated as a smooth macroscopic current source, separable in cartesian "shower"-coordinates, which facilitates calculation of phase coherence at a remote detector. Time delays account for geometry and varying index of refraction along the shower profile. Current distribu
... More
Presented by David SECKEL
on
22 Jun 2012
at
11:15
Acoustic neutrino detection is a promising technique to instrument the large volumes required to measure the small expected flux of ultra-high energy cosmogenic neutrinos. Using ice as detection medium allows for coincident detection of neutrino interactions with acoustic sensors, radio antennas and optical light sensors with the benefit of cross calibration possibilities or independent measuremen
... More
Presented by Timo KARG
on
20 Jun 2012
at
09:40
The acoustic neutrino detection technique is a promising approach for future large-scale detectors with the aim of measuring the small expected flux of ultra-high energy cosmogenic neutrinos. This talk will focus on the application of the technique in water, based on site studies performed with different acoustic test arrays. Though the technique is intriguingly simple, challenges arise from e.g.
... More
Presented by Dr. Kay GRAF
on
20 Jun 2012
at
09:00
The IceMole, a combination of melting and drilling probe, which is able to move and steer through ice and take samples while doing so, can be used to install instruments in ice. An improved design of the prototype developed by the FH Aachen, the Eceladus Explorer, could be used to explore water filled cracks on the Saturn moon Enceladus some day. Before starting a space mission to Enceladus the ne
... More
Presented by Ruth HOFFMANN
on
20 Jun 2012
at
10:40
The use of acoustical sensors in combination with optical sensors within one sensor module is a promising alternative to the standard design of deep-sea neutrino telescopes with separate acoustical and optical devices. These so-called Opto-Acoustical Modules comprise at least one sensor of each type inside the same glass housing. In this combination it is possible to determine the module position
... More
Presented by Alexander ENZENHöFER
on
20 Jun 2012
at
10:20
In situ acoustic calibration devices should play a very important role to assure the right performance of sensors and detectors for the acoustic detection of ultra-high energy neutrinos in underwater telescopes. Moreover, they provide evidences for the feasibility evaluation of the technique and for the efficiency determination of the entire detector. Following previous studies, relating with para
... More
Presented by Ms. Silvia ADRIáN-MARTíNEZ
on
21 Jun 2012
at
10:00
In the previous years, LOPES emerged as a very successful experiment measuring the radio emission from air showers in the MHz frequency range. In parallel, the theoretical description of radio emission was developed further and REAS 3.1 became a well-respected simulation Monte Carlo code. REAS 3.1 as well as CoREAS are based on the endpoint formalism, i.e. no assumptions on the emission mechanism
... More
Presented by Dr. Marianne LUDWIG
on
20 Jun 2012
at
17:25
LOPES is a digital antenna array at the Karlsruhe Institute of Technology, Germany, for cosmic-ray air-shower measurements. Triggered by the co-located KASCADE-Grande air-shower array, LOPES detects the radio emission of air showers via digital radio interferometry. We will summarize the status of LOPES and recent results concerning the understanding of the radio emission and the reconstruction of
... More
Presented by Frank SCHRöDER
on
20 Jun 2012
at
17:00
The CROME experiment is a new setup to study microwave radiation from air showers. The GHz radiation is measured with several parabolic antennas, each equipped with a multiple-receiver camera operating in the extended C band (3.4--4.2 GHz). Data are taken in coincidence with cosmic-ray showers detected by the KASCADE-Grande experiment. The overall experimental setup will be presented and different
... More
Presented by Radomir SMIDA
on
21 Jun 2012
at
15:10
Gravitational waves are radiative solutions of space-time dynamics predicted by Einstein's theory of General Relativity. A world-wide array of large-scale and highly-sensitive interferometric detectors constantly scrutinizes the geometry of the local space-time with the hope to detect deviations that would sign an impinging gravitational wave from a remote astrophysical source. Finding the rare an
... More
Presented by Eric CHASSANDE-MOTTIN
on
21 Jun 2012
at
09:00
LOFAR (the Low Frequency Array) is the largest radio telescope in the world for observing low frequency radio emission from 10 to 240 MHz. In addition to its use as an interferometric array, LOFAR is now routinely used to detect cosmic ray induced air showers by their radio emission.
The LOFAR core in the Netherlands has a higher density of antennas than any other dedicated cosmic ray experimen
... More
Presented by Anna NELLES
on
22 Jun 2012
at
09:40
Radiation in the microwave band from the passage of charged particles has been measured in accelerator test beams. This radiation could provide a new technique for ultra-high energy cosmic rays, its main advantage being the possibility to instrument a large area, with 100% duty cycle and virtually no atmospheric attenuation, using relatively cheap equipment. Cosmic ray detection in the GHz band is
... More
Presented by Pedro FACAL SAN LUIS
on
21 Jun 2012
at
16:40
An observation system of MBR from extensive airshowers is being developed on a roof of the Konan University in Japan. This system consists of 12 parabolas with 1.2 diameters. Each parabola has a 12 GHz receiver. The signals from the receivers are digitized by 65 MS/s FADC. Field of view of each parabola is about 1.5 degrees and this system covers 6 times 4.5 square degrees. Test observation has be
... More
Presented by Mr. Tokonatsu YAMAMOTO
on
21 Jun 2012
at
17:00
The 'Tamm Problem' (Tamm, 1939) is the calculation of the electromagnetic radiation emitted by a particle travelling a finite distance at a uniform (relativistic) velocity in a medium. It is exactly the problem which needs to be solved in Monte-Carlo simulations of the radio-emission from individual particles. The two main formulas used in calculations - the ZHS algorithm and the endpoint formulat
... More
Presented by Clancy JAMES
on
22 Jun 2012
at
11:35
The Auger Engineering Radio Array (AERA) is located within the Pierre-Auger Observatory and currently consists of 24 self-triggered radio stations. Observation of radio signals from cosmic rays is confirmed by the surface detector (SD) stations of the observatory which provide well calibrated information on the cosmic ray energies and arrival directions. The response of the radio stations has been
... More
Presented by Mr. Christian GLASER
on
19 Jun 2012
at
18:05
Extensive air showers are detected via particle measurements on the ground, the energy deposition in the atmosphere or via MHz-radio waves produced mainly by charged particles moving in the magnetic field of the earth. In addition, emission is predicted due to molecular bremsstrahlung. The Cosmic-Ray Observation via Microwave Emission (CROME) setup at the Karlsruhe Institute of Technology (KIT) co
... More
Presented by Sebastian MATHYS
on
21 Jun 2012
at
15:50
We discuss the first results of macroscopic calculations based on full Monte-Carlo simulations including a realistic index of refraction using the EVA-code. Due to the finite refractivity Cherenkov effects play an important role in radio emission from air showers. We show that the observed frequency spectrum depends strongly on the distance from the shower core. At the Cherenkov angle the high fre
... More
Presented by Olaf SCHOLTEN
on
20 Jun 2012
at
15:50
GHz detection activities for air showers: Experiments, accelerator measurements, theory
Presented by Dr. Ralph ENGEL
on
21 Jun 2012
at
14:30
We report on experimental efforts (ARA, ARIANNA, etc) which seek neutrino detection using englacial radio receivers. By exploiting the Askaryan effect, such embedded sensors can achieve detection thresholds of order 100 PeV, and thereby attain excellent sensitivity to the expected cosmogenic neutrino flux. Current status, comparison of existing experiments and future prospects will be reviewed.
Presented by dave BESSON, Robert LAHMANN
on
20 Jun 2012
at
11:30
The South Pole Acoustic Test Setup (SPATS) consists of four strings,
each instrumented with seven acoustic sensors and transmitters frozen
in the upper 500 m of IceCube holes. SPATS sensors have been extensively studied in the laboratory at changing temperatures and pressure in air, water and ice. It was however impossible to create conditions like in deep ice at the South Pole. We present here
... More
Presented by Rolf NAHNHAUER
on
21 Jun 2012
at
09:40
Type: Poster
Track: Poster
LOPES is an ever evolving radio antenna array co-located within the KASCADE-Grande air-shower particle-detector array at the Karlsruhe Institute of Technology (KIT). It measures the radio emission from cosmic-ray induced air showers via digital radio interferometry at energies larger than 10^16.5 eV. In its latest setup, called LOPES-3D, it is able to measure all three components of the electric f
... More
Presented by Mr. Daniel HUBER
The Moon is used as a target volume for ultra-high energy neutrino searches with terrestrial radio telescopes. The LUNASKA project has conducted observations with the Parkes and ATCA telescopes; and, most recently, with both of them in combination. We present an analysis of the data obtained from these searches, including validation and calibration results for the Parkes-ATCA experiment, as well
... More
Presented by Mr. Justin BRAY
on
19 Jun 2012
at
15:10
The Lunar Cherenkov technique is a promising method for UHE neutrino and cosmic ray detection which aims to detect nanosecond radio pulses produced during particle interactions in the Lunar regolith. For low frequency experiments, such as NuMoon, the frequency dependent dispersive effect of the ionosphere is an important experimental concern as it reduces the pulse amplitude and subsequent chances
... More
Presented by rebecca MCFADDEN
on
19 Jun 2012
at
15:55
Two stages of a lunar experiment with the regolith as a target for the interaction of ultrahigh-energy cosmic rays and neutrinos are described. The first stage deals with the LORD experiment within the framework of the Luna-Glob space mission scheduled for the nearest future. The current status of the LORD-instrumentation development is discussed. The aperture of the lunar orbital radio detector e
... More
Presented by Dr. German GUSEV
on
19 Jun 2012
at
16:15
We had reported a reflection effect of a radio wave from rock salt irradiated by an X-ray or a 2MeV-electron beam. The beam irradiation had given rise to increases in temperature and consequently permittivity in the rock salt. The radio wave had been reflected due to the irregularity of the permittivity in the rock salt. In this conference we report measurements of phase changes as well as amplitu
... More
Presented by Dr. Masami CHIBA
on
20 Jun 2012
at
12:35
The MAYBE (Microwave Air Yield Beam) Experiment is dedicated to the study of the microwave emission from particle beams in the light of its possible use in the detection of ultra high energy cosmic rays.
Measurements of the microwave emission from an electron-beam where performed at the 3 MeV electron Van de Graaff facility of the Argonne National Laboratory. Results include the measured spectr
... More
Presented by Pedro FACAL SAN LUIS
on
21 Jun 2012
at
17:20
Type: Poster
Track: Poster
Radio emission is one of the processes that Extensive Air Showers (EAS) produce in the air. The LOPES (LOFAR Prototype Station) experiment at KIT Campus North, on site of the KASCADE-Grande experiment in Germany, was a certain period of its lifetime configured to measure polarized signals from EAS. Polarization characteristics of the radio signals are important aspects in verifying the radio emiss
... More
Presented by Dr. Paula Gina ISAR
Type: Poster
Track: Poster
The influence of the electron-hole plasma on the Ascaryan effect caused by cosmic-ray cascades in a solid medium is discussed. It is shown that screening the radio emission attaining detectors aimed at registration of particles of energies exceeding 10^20 eV should be taken into account. We state that the radio-emission absorption is strong in pure Antarctic ice but is less significant in the luna
... More
Presented by Dr. German GUSEV
Microwave radiation from high-energy air showers has been observed in the C band with the CROME setup. The properties of these showers as reconstructed by KASCADE-Grande will be presented. The features of the detected GHz signals will be discussed and compared with Monte Carlo predictions for different emission mechanisms, taking into account the reconstruction uncertainties of KASCADE-Grande.
Presented by Felix WERNER
on
21 Jun 2012
at
15:30
After 10 years of efforts, important progress have been made in the field of radio-detection of extensive air showers in the MHz range. The geomagnetic contribution has been proven to be dominant. A secondary process in the shower (probably related to the excess of charges in the shower) has also been detected. The correlation between the detected electric field and the nature and energy of the pr
... More
Presented by Benoît REVENU
on
19 Jun 2012
at
17:00
Performance of the Aachen Acoustic Laboratory and results from comparative studies in water and ice.
To investigate acoustic ice properties under laboratory conditions and to test the thermo-acoustic model, the Aachen Acoustic Laboratory (AAL) was founded as a part of the acoustic working group (SPATS) within the IceCube collaboration.
The AAL provides a test facility setup with a proper infrastructure to study acoustics and thermo-acoustics in a large volume of water and ice. The control on th
... More
Presented by Dirk HEINEN
on
21 Jun 2012
at
10:40
With its 1km3 in-ice sensor array complemented by a 1km2 surface array of ice-Cherenkov tanks for particle detection, the IceCube observatory is not only the largest neutrino telescope but also one of the world's most competitive instrument for studying cosmic rays in the PeV to EeV regime. In particular, studying high-energy muons from
the shower core in coincidence with particle flux on the sur
... More
Presented by Sebastian BOESER
on
22 Jun 2012
at
10:25
Radio Detection in Dense Matter: Balloon, telescope, satellite
Presented by David SECKEL
on
19 Jun 2012
at
14:30
While the fluorescence and the ground counter techniques of the ultra-high energy cosmic rays (UHECR) detection were being developed for decades, the interest in the radio detection diminished after the initial experiments in the 1960s. As a result, the fluorescence and the surface array techniques are more mature today, providing more reliable measurements of the primary cosmic particle energy, c
... More
Presented by Dr. Konstantin BELOV
on
22 Jun 2012
at
11:55
Type: Poster
Track: Poster
The KM3NeT consortium is preparing to build a multi-cubic-kilometre sized deep-sea neutrino telescope in the Mediterranean Sea. Thousands of detector modules and sensors will be operated remotely and all their data will stream continuously to shore for neutrino detection, detector calibration, environmental monitoring and Sea- and Earth-Sciences observations.
The readout concept of KM3NeT, the da
... More
Presented by Tass BELIAS
The first phase of the Auger Engineering Radio Array (AERA) has been deployed in the fall of 2010. Currently, the array consists currently of 24 stations distributed over an area of 0.5 km$^2$. AERA has two different objectives. The first one is to measure cosmic-ray events and to provide the necessary data to improve our understanding of radio emission from air showers. The second objective is t
... More
Presented by Maximilien MELISSAS
on
19 Jun 2012
at
17:40
In the previous decades, remarkable progress has been made in the detection of electromagnetic emission from cosmic ray air showers. The LOPES experiment, a digital radio interferometer located at KIT (Karlsruhe Institute of Technology), obtained considerable results for the detection at MHz frequencies.
Aiming to become competitive with the well-established investigation methods, radio detection
... More
Presented by Mrs. Nunzia PALMIERI
on
20 Jun 2012
at
17:45
Type: Poster
Track: Poster
The Electron Light Source (ELS) is a linear accelerator to produce bunches of 40 MeV electrons that are used to calibrate the fluorescence telescopes of Telescope Array (TA). The beam is shot vertically up into the air and resembles an air shower of $10^{16.5}$ eV. A measurement campaign has been started to search for microwave emission from air showers by placing GHz antennas at close distance to
... More
Presented by Dr. Ralph ENGEL
We review the present status of the search for ultra-high energy cosmic neutrinos with the conventional methods. The IceCube neutrino observatory has currently realised the best sensitivity on detection of neutrinos in the energy range around EeV, by the standard neutrino detection technique measuring ultra-violet Cherenkov light emissions. The most updated results from the data obtained by the in
... More
Presented by Shigeru YOSHIDA
on
21 Jun 2012
at
12:15
Detection of ultra-high-energy neutrinos requires vast natural
detector volumes of ice or rock. The Moon itself is the largest
detector mass available. Earthbound radio telescopes can search the
Lunar surface for radio flashes, produced by neutrinos through the
Askaryan mechanism. A new generation of low-frequency, digital radio
arrays, spearheaded by LOFAR, will allow for searches of unprece
... More
Presented by Stijn BUITINK
on
19 Jun 2012
at
15:35
In the Monte Carlo simulation code REAS, radio emission from air showers is calculated using the "endpoint formalism". No assumptions on the emission mechanism have to be made in this parameter-free approach.
REAS simulations are based on particle distributions which have been simulated with CORSIKA and then exported as 4-dimensional histograms. During the histogramming, however, information is
... More
Presented by Dr. Tim HUEGE
on
20 Jun 2012
at
15:10
Acoustic neutrino detection is a promising approach for large-scale ultra-high energy neutrino detectors in water. In this contribution, a Monte Carlo simulation chain for acoustic neutrino detection devices in water will be presented. The simulation chain covers the generation of the acoustic pulse produced by a neutrino interaction and its propagation to the sensors within the detector. Currentl
... More
Presented by Mr. Max NEFF
on
21 Jun 2012
at
11:55
We present a microscopic computation of the radio emission from air showers initiated by ultra-high energy cosmic rays in the atmosphere. The strategy adopted is to compute each secondary particle contribution of the electromagnetic component and to construct the total signal at any location. SELFAS2 is a code which doesn’t rely on air shower generators like AIRES or CORSIKA and it is based on t
... More
Presented by Vincent MARIN
on
21 Jun 2012
at
18:00
The purpose of the CODALEMA experiment, installed at the Nançay Radio Observatory (France), is to study the radio-detection of cosmic rays of ultra high energy. Distributed over an area of 0.25 km2, the original device has a centralized acquisition, and uses in coincidence an array of particle detectors and an array of active dipoles. A new analysis of energy observables is presented from this sy
... More
Presented by Pascal LAUTRIDOU
on
20 Jun 2012
at
18:05
The first stage of the Auger Engineering Radio Array has been deployed at the Pierre Auger Observatory in Argentina and is taking data. It measures radio signals in the MHz range from air showers induced by cosmic rays with energies above 10^17 eV. It is overlooked by the fluorescence telescopes and is located in a dense part of the particle detector array. This allows for cross-calibration of the
... More
Presented by Stefan GREBE
on
19 Jun 2012
at
18:25
Type: Poster
Track: Poster
Calculations of radio emission of neutrino induced showers in large volumes observing the generated radio waves, are reported. The medium chosen is salt, one of the media originally proposed by Askaryan, which can be found in large volumes throughout the world, including in Romania.
We have performed simulations of neutrino-nucleon charged-current and neutral-current interactions using the HERWIG
... More
Presented by Alexandra SAFTOIU
The Askar'yan Radio Array (ARA), a neutrino detector to be situated at the South Pole next to the IceCube detector, will be sensitive to ultrahigh-energy cosmic neutrinos above 0.1 EeV and will have the greatest sensitivity within the favored energy range from 0.1 EeV up to 10 EeV. Neutrinos of this energy are guaranteed by the current observations of the GZK-cutoff by the HiRes and the Pierre Aug
... More
Presented by Thomas MEURES
on
20 Jun 2012
at
12:10
A comprehensive overview of the newly developed EVA-code will be given by making a direct comparison to the MGMR-code. Both codes perform a macroscopic calculation of radio emission from cosmic-ray-induced air showers. The MGMR-model is based on parameterized shower distributions ignoring the lateral extend of the shower. Furthermore, all calculations ignored Cherenkov effects. To take into accoun
... More
Presented by Krijn D. DE VRIES
on
20 Jun 2012
at
15:30
The existence of ultra-high energy (UHE) cosmic-rays (CRs) is a strong motivation for neutrino astronomy at very high energies; it seems unavoidable that UHE CRs undergo hadronic interactions with radiation backgrounds or matter prior to their arrival at Earth. Mesons produced in these interactions quickly decay and release a flux of high-energy neutrinos and gamma-rays. Neutrino observatories hav
... More
Presented by Markus AHLERS
on
22 Jun 2012
at
09:00
A precise understanding of the radio emission from extensive air showers is of fundamental importance for the design of cosmic ray radio detectors as well as the analysis and interpretation of their data.
In recent years, tremendous progress has been made in the understanding of the emission physics both in macroscopic and microscopic frameworks. A consistent
... More
Presented by Tim HUEGE
on
20 Jun 2012
at
14:30
The Antarctic Impulsive Transient Antenna (ANITA) is a balloon-borne radio experiment designed to discover ultra-high energy cosmic neutrinos. The ANITA detector has completed one prototype and two full-scale flights above the Antarctic continent. Two direct and fourteen reflected cosmic ray events of the ultra-high energy were observed during the first full scale flight and several others in the
... More
Presented by Dr. Konstantin BELOV
on
21 Jun 2012
at
17:40
We report the present status and perspectives of the feasibility study to detect cosmic neutrinos acoustically in Lake Baikal. The results of a background studies are presented. It was shown that most of the detected background neutrino-like pulses come from the lake surface. This fact has been used in project of an acoustic prototype detector that consists of compact modules with 4-channel antenn
... More
Presented by Prof. Nikolay BUDNEV
on
21 Jun 2012
at
11:30
Tunka-Rex (Tunka radio extension) will be an array of about 20 antennas at the Tunka experiment close to Lake Baikal in Siberia. The antennas will be connected directly to the data acquisition of the Tunka main detector, a 1 km² large array of 133 non-imaging photomultipliers observing the Cherenkov light of air showers in dark and clear nights. This allows to cross-calibrate the radio signal wit
... More
Presented by Frank SCHRöDER
on
22 Jun 2012
at
10:05
Using the ZHAireS Monte Carlo code, we show that the Fourier-spectrum of the radio emission of inclined air showers can have a sizable intensity up to the GHz frequency range. At these frequencies, only the fraction of shower development seen at an angle close to the Cherenkov angle contributes to the observable emission, which is mainly due to the geomagnetic and charge excess mechanisms. At gr
... More
Presented by Dr. Washington CARVALHO JR.
on
20 Jun 2012
at
16:10
