3-11 July 2007
Merida, Mexico
Mexico/General timezone
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HE 1.5

Place

Location: Merida, Mexico
Room: Yucatan II+III+IV (Fiesta Americana)
Date: from 5 Jul 09:20 to 10 Jul 13:30

Timetable | Contribution List

Displaying 22 contributions out of 22
Type: Oral Session: HE 1.5
Track: HE.1.5
The IceCube neutrino detector is built into the Antarctic ice sheet at the South Pole to measure high energy neutrinos. For this, 4800 PMTs are being deployed at depths between 1,450 and 2,450 meters into the ice to measure neutrino induced charged particles like muons. IceTop is a surface air shower detector consisting of 160 Cherenkov ice tanks located on top of IceCube. To extend IceTop, ... More
Presented by Dr. Timo KARG on 10/7/2007 at 17:53
Type: Oral Session: HE 1.5
Track: HE.1.5
The fluorescence detection of ultra high energy ($\gtrsim 10^{18}$ eV) cosmic rays requires a detailed knowledge of the fluorescence light emission from nitrogen molecules, which are excited by the cosmic ray shower particles along their path in the atmosphere. We have made a precise measurement of the fluorescence light spectrum excited by MeV electrons in dry air. We measured the relative i ... More
Presented by Dr. Gonzalo RODRIGUEZ FERNANDEZ on 10/7/2007 at 16:18
Type: Oral Session: HE 1.5
Track: HE.1.5
The surface detector of Telescope Array(TA) experiment are deployed in desert of western utah,USA. The detector consists of two layers of plastic scintillators of 3m2 area with wave length shifter fiber(WLSfiber). And at each layer,PMT are connected with WLS fibers. At each layer ,2 LEDs are also equipped to check PMT linearity. To estimate number of shower particles with good accuracy, it ... More
Presented by Dr. Toshiyuki NONAKA on 10/7/2007 at 16:06
Type: Oral Session: HE 1.5
Track: HE.1.5
GRAPES-3 experiment employs a high-density array of scintillators and a large area tracking muon telescope. The GRAPES collaboration is being expanded with addition of several major facilities. These include a Cerenkov telescope and low frequency dipole array for the measurement of shower energy. Addition of several modules of muon telescopes to cover a larger area, expansion of the scintilla ... More
Presented by Prof. Sunil GUPTA on 10/7/2007 at 17:29
Type: Oral Session: HE 1.5
Track: HE.1.5
In the fluorescence detection of ultra high energy ($\gtrsim 10^{18}$ eV) cosmic rays, it is assumed that the number of emitted fluorescence photons is proportional to the energy deposited in air by shower particles. We have performed measurements of the fluorescence yield in atmospheric gases excited by electrons over a wide energy range. AIRFLY has collected data between 1 and 3 MeV at a Va ... More
Presented by Dr. Lorenzo CAZON on 10/7/2007 at 17:17
Type: Oral Session: HE 1.5
Track: HE.1.5
The Cern Neutrinos to Gran Sasso (CNGS) project aims to produce a high energy, wide band muon neutrino beam at Cern and send it towards the INFN Gran Sasso National Laboratory (LNGS). Its main goal is the observation of the tau neutrino appearance. The beam started its operation in August 2006: a total amount of $7.6~10^ {17}$ protons were delivered to the target. The LVD detector, instal ... More
Presented by Gabriella SARTORELLI on 10/7/2007 at 15:30
Type: Oral Session: HE 1.5
Track: HE.1.5
The yield of fluorescence photons in an extensive air shower allows the observer to determine the number of shower particles by measuring the number of photons produced. As the systematic uncertainties in both ground array and fluorescence detectors improve our need to better understand this calibration is required. Additionally, as more sensitive fluorescence detectors observe further into t ... More
Presented by Dr. Kevin REIL, Dr. Petra HUENTEMEYER on 10/7/2007 at 14:06
Type: Oral Session: HE 1.5
Track: HE.1.5
Radio receivers (RICE, AURA) have been deployed to detect impulsive emissions from neutrino interactions in ice at South Pole. An alternative source of pulses is the cores of cosmic ray induced air showers. AIRES and CORSIKA simulations suggest that >10% of the primary cosmic ray energy enters the ice within 20 cm of the primary axis impact point. The resulting 5-10 m cascade will make Askarya ... More
Presented by Dr. David SECKEL on 10/7/2007 at 15:54
Type: Oral Session: HE 1.5
Track: HE.1.5
JEM-EUSO with a large and wide-angle telescope mounted on ISS has been planed as a space mission to explore extremes of the universe through the investigation of ultra-high-energy cosmic rays by detecting photons which accompany air showers developed in the earth's atmosphere. JEM-EUSO will be launched by Japanese H-II Transfer Vehicle(HTV) and mounted at the Exposed Facility of Japanes ... More
Presented by Prof. Fumiyoshi KAJINO on 10/7/2007 at 14:30
Type: Oral Session: HE 1.5
Track: HE.1.5
on 10/7/2007 at 13:30
Type: Oral Session: HE 1.5
Track: HE.1.5
The surface air-shower array above the IceCube neutrino telescope now consists of 52 ice Cherenkov tanks at 26 stations spread over an area of 0.22 square kilometer. This paper reports on experience with deployment and operation of IceTop and describes data that verify the performance, threshold and energy response of the array.
Presented by Prof. Tom GAISSER on 5/7/2007 at 14:20
Type: Oral Session: HE 1.5
Track: HE.2.5
The Telescope Array Low Energy Extension (TALE) Experiment consists of three detectors which will extend the sensitivity in energy of the Telescope Array (TA) experiment by two orders of magnitude, from 18.5<log(E)<20.5 (in eV) to 16.5<log(E)<20.5. In addition it will increase the aperture of the TA experiment at all energies, and double it at the highest energies. The aim of the experiment ... More
Presented by Prof. Gordon THOMSON on 10/7/2007 at 18:17
Type: Oral Session: HE 1.5
Track: HE.1.5
JEM-EUSO space observatory will have a very large exposure factor in several years, which is far exceeding the critical exposure factor required for observation of most of the sources within a few hundred Mpc. The main science objective is the source identifying atsronomy in particle channel. Quasi-linear tracking of the sources becomes feasible at energy > 10^20 eV for all-sky. Acceleration ... More
Presented by Prof. Yoshiyuki TAKAHASHI on 10/7/2007 at 14:18
Type: Oral Session: HE 1.5
Track: HE.1.5
SiPM is the novel solid state photodetector which can be operated in the single photon counting mode. It has excellent features, high quantum efficiency, good charge resolution, fast response, very compact, high gain of 10^6, very low power consumption, immune to the magnetic field and low bias voltage, typically 60V. Drawbacks of this device are currently the large dark current, cross ... More
Presented by Prof. Masahiro TESHIMA on 10/7/2007 at 17:41
Type: Oral Session: HE 1.5
Track: HE.1.5
The uncertainty of hadron interaction models of Monte Carlo simulations have caused some systematic errors of energy reconstruction and the determination of composition in ultra high energy cosmic ray measurements. The uncertainty is due to the lack of the experimental data on the nuclear interactions in the energy region over 2x10^14eV. The LHCf experiment will provide crucial calibration poi ... More
Presented by Mr. Hiroaki MENJO on 10/7/2007 at 14:42
Type: Oral Session: HE 1.5
Track: HE.1.5
The space TUS detector of UV fluorescence light radiated by EAS of Ultra High Energy Cosmic Rays (UHECR) is under preparation for the launch in 2009- 2010. The TUS instrument will have ~2 sq. m. mirror - concentrator area and 256 PMT pixels in the photo receiver at the mirror focal surface. The TUS mission is now planned for operation at the Small Space Apparatus separated from the main ... More
Presented by Dr. LEONID TKACHEV on 10/7/2007 at 13:54
Type: Oral Session: HE 1.5
Track: HE.1.5
The EEE (/Extreme Energy Event/) Project is an experiment for the study of very high-energy extensive air showers, actually starting in Italy. It is based on the detection of the shower muon component by means of a network of tracking detectors, installed in Italian High Schools. The Project, supported by the Ministero dell’Università e della Ricerca (MIUR), Istituto Nazionale di Fisica ... More
Presented by C. SBARRA on 10/7/2007 at 18:05
Type: Oral Session: HE 1.5
Track: HE.1.5
JEM-EUSO is a science mission to explore extremes of the Universe. It observes the dark-side of the Earth and detects UV photons emitted from the giant air shower caused by an extremely high energy particle (about 10^20 eV). Such a particle arrives almost straightly through our Milky Way Galaxy and is expected to allow us to trace the source location by its arrival direction. This will open ... More
Presented by Dr. Toshikazu EBISUZAKI on 10/7/2007 at 13:42
Type: Oral Session: HE 1.5
Track: HE.1.5
The Pierre Auger Observatory is a multi-national project for research on ultra-high energy cosmic rays. The Southern Auger Observatory in Mendoza province, Argentina, is approaching completion in 2007 with an instrumented area of 3,000 square kilometers. It will accurately measure the spectrum and composition of ultra-high energy cosmic rays up to and beyond the predicted GZK feature. We ha ... More
Presented by Prof. David NITZ on 10/7/2007 at 16:42
Type: Oral Session: HE 1.5
Track: HE.1.5
Near UV detector on-board the “Universitetsky-Tatiana” satellite has observed the atmosphere glow at night side of the Earth. Digital oscilloscopes help to select transient luminous events and to measure their temporal profiles in time scale of 1-64 ms. Data from those detectors were analyzed for prediction the duty cycle of future space detectors of ultra high energy cosmic rays.
Presented by Mr. Pavel KLIMOV on 10/7/2007 at 15:42
Type: Oral Session: HE 1.5
Track: HE.1.5
Ultra High Energy Cosmic Rays and Neutrinos, with energies from a few 10^18 eV to beyond the decade of 10^20 eV, and Cosmic Rays with E >= 5 10^19 eV appear to be the only suitable messengers to explore the Universe at frontier energies, where radiation is expected to be produced under the most extreme physical conditions. Observations of these UHE particles will certainly provide new informa ... More
Presented by Dr. Andrea SANTANGELO on 10/7/2007 at 16:30
Type: Oral Session: HE 1.5
Track: HE.1.5
In the framework of LOPES (LOFAR PrototypE Station), a Self-Triggered Array of Radio detectors (STAR) is developed. The challenge of LOPES^STAR is to provide an independent self-trigger on radio emission of extensive air showers with primary energy above approximate 5*10^17 eV. Measurements are done both with an external and self-trigger in radio loud and quiet areas. Based on these data the ... More
Presented by Mr. Thomas ASCH on 10/7/2007 at 17:05
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