BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Developments in Nanosecond Pulse Detection Methods & Technology DTSTART;VALUE=DATE-TIME:20070707T153000Z DTEND;VALUE=DATE-TIME:20070707T154200Z DTSTAMP;VALUE=DATE-TIME:20260721T064927Z UID:indico-contribution-62-0-434@cern.ch DESCRIPTION:Speakers: Mr. JAMES\, Clancy (University of Adelaide)\nA promi sing method for the detection of UHE neutrinos is the Lunar Cherenkov\ntec hnique\, which utilises Earth-based radio-telescopes to detect the coheren t\nCherenkov radiation emitted when one of these particles interacts in th e outer \nlayers\nof the Moon. The LUNASKA project aims to overcome the te chnological \nlimitations of\npast experiments to utilise the next generat ion of radio-telescopes in the \nsearch for\nthese elusive particles. To t ake advantage of road-bandwidth data from \npotentially\nthousands of ante nna requires advances in signal processing technology. Here \nwe\ndescribe recent developments in this field and their application in the search for \nUHE neutrinos\, from a preliminary experiment using the first stage of a n \nupgrade to\nthe Australia Telescope Compact Array\, to possibilities f or fully utilising the\ncompleted Square Kilometre Array.\n\nhttps://indic o.nucleares.unam.mx/event/4/session/62/contribution/434 LOCATION:Merida\, Mexico Kabah (Holiday Inn) URL:https://indico.nucleares.unam.mx/event/4/session/62/contribution/434 END:VEVENT BEGIN:VEVENT SUMMARY:Observations of the Askaryan Effect using the ANITA balloon instru ment DTSTART;VALUE=DATE-TIME:20070707T154200Z DTEND;VALUE=DATE-TIME:20070707T155400Z DTSTAMP;VALUE=DATE-TIME:20260721T064927Z UID:indico-contribution-62-0-929@cern.ch DESCRIPTION:Speakers: Mr. KOWALSKI\, Jeff (University of Hawaii)\nMost ult ra-high energy neutrino experiments using ice as a target medium rely \non the Askaryan effect (coherent impulsive radio Cherenkov radiation from th e \ncharge asymmetry in an electromagnetic shower). This effect was measur ed \nwith the Antarctic Impulsive Transient Antenna (ANITA) experiment at the \nStanford Linear Accelerator Center (SLAC) in June 2006. The showers were \nproduced by 28.5 GeV electron bunches with typically number density of 10^9\nper bunch impacting a 7.5 metric ton ice target (roughly 12.5 ra diation lengths). \nIn this paper we present the measured angular and freq uency dependence of \nthe radiation and compare the results with the predi cted response.\n\nhttps://indico.nucleares.unam.mx/event/4/session/62/cont ribution/929 LOCATION:Merida\, Mexico Kabah (Holiday Inn) URL:https://indico.nucleares.unam.mx/event/4/session/62/contribution/929 END:VEVENT BEGIN:VEVENT SUMMARY:Multigap Resistive Plate Chambers for EAS study in the EEE Project DTSTART;VALUE=DATE-TIME:20070707T155400Z DTEND;VALUE=DATE-TIME:20070707T160600Z DTSTAMP;VALUE=DATE-TIME:20260721T064927Z UID:indico-contribution-62-0-646@cern.ch DESCRIPTION:Speakers: IMPONENTE\, Giovanni (Museo Storico della Fisica\, C entro Studi e Ricerche "E. Fermi"\, Roma and INFN Laboratori Nazionali di Frascati)\nThe EEE (Extreme Energy Event) Project is an extensive air show er experiment devoted\nto the study of very high energy events through the detection at ground of the muon\ncomponent of the shower. The detectors a re installed inside many Italian High\nSchools\, involving students in the experiment. The detector used is a tracking\ntelescope made of 3 planes o f Multi-gap Resistive Plate Chambers (MRPCs)\, a\nsimplified\, large and c heap version of the detector designed for the time of flight\nmeasurements (TOF) of the ALICE experiment at LHC. Exploiting the concept of the\nmult iple small gas gaps combined with the use of high gain and fast gas mixtur e\n(Freon and SF6 based)\, the MRPCs show an overall time resolution of 10 0 ps. The\nparticle tracking is performed equipping MRPCs with 24 copper s trips read at both\nends by front end electronics based on NINO ASIC and u sing commercial multi-hit TDCs.\nThe MRPCs for the EEE experiment are buil t at CERN by Italian High School students\nand teachers under the supervis ion of INFN and Centro “E. Fermi” experts. After\nconstruction they ar e shipped to Italy and after preliminary tests they are installed\ninside the schools.\nHere we present the status and first results of the already operating stations.\n\nhttps://indico.nucleares.unam.mx/event/4/session/62 /contribution/646 LOCATION:Merida\, Mexico Kabah (Holiday Inn) URL:https://indico.nucleares.unam.mx/event/4/session/62/contribution/646 END:VEVENT BEGIN:VEVENT SUMMARY:ARIANNA: A New Concept for UHE Neutrino Detection DTSTART;VALUE=DATE-TIME:20070707T160600Z DTEND;VALUE=DATE-TIME:20070707T161800Z DTSTAMP;VALUE=DATE-TIME:20260721T064927Z UID:indico-contribution-62-0-1163@cern.ch DESCRIPTION:Speakers: Prof. BARWICK\, Steven (University of California-Irv ine)\nThe ARIANNA concept utilizes the Ross Ice Shelf near the coast of An tarctica \nto increase the sensitivity to cosmogenic neutrinos by roughly an order of \nmagnitude when compared to the sensitivity of existing detec tors and those \nunder construction. Therefore\, ARIANNA can test a wide v ariety of scenarios \nfor GZK neutrino production\, and probe for physics beyond the standard \nmodel by measuring the neutrino cross-section at cen ter of mass energies \nnear 100 TeV. ARIANNA capitalizes on several remark able properties of \nthe Ross Ice Shelf: shelf ice is relatively transpare nt to electromagnetic \nradiation at radio frequencies and the water-ice b oundary below the shelf \ncreates a good mirror to reflect radio signals f rom interactions by neutrinos\ntraveling downward. The high sensitivity re sults from nearly six months of \ncontinuous operation\, low energy thresh old (~3x10^17 eV)\, and more than 2*pi\nof sky coverage. The baseline conc ept for ARIANNA consists of moderately \nhigh gain antenna stations arrang ed on a 100 x 100 square grid\, separated \nby about 300m. Each station co nsist of eight linearly polarized antennas \nresiding just beneath the sno w surface and facing downwards. They communicate \nwith each other and a c entral control hub by wireless links to generate global triggers.\nThis pa per describes the ARIANNA concept\, science goals\, and recent progress\ni n the development of the detector.\n\nhttps://indico.nucleares.unam.mx/eve nt/4/session/62/contribution/1163 LOCATION:Merida\, Mexico Kabah (Holiday Inn) URL:https://indico.nucleares.unam.mx/event/4/session/62/contribution/1163 END:VEVENT BEGIN:VEVENT SUMMARY:Feasibility of acoustic neutrino detection in ice: First results f rom the South Pole Acoustic Test Setup (SPATS) DTSTART;VALUE=DATE-TIME:20070707T161800Z DTEND;VALUE=DATE-TIME:20070707T163000Z DTSTAMP;VALUE=DATE-TIME:20260721T064927Z UID:indico-contribution-62-0-1282@cern.ch DESCRIPTION:Speakers: Mr. VANDENBROUCKE\, Justin (University of California )\nAstrophysical neutrinos in the EeV range (particularly those generated by the\ninteraction of cosmic rays with the microwave background) promise to be a valuable\ntool to study astrophysics and particle physics at the h ighest energies. Much could\nbe learned from temporal\, spectral\, and an gular distributions of ~100 events\, which\ncould be collected by a detect or with ~100 km^3 effective volume in a few years. It\nwould be prohibiti ve to scale the optical Cherenkov technique to this sensitivity. \nHowever \, using the thick ice available at the South Pole\, the radio and acousti c\ntechniques promise to provide sufficient sensitivity with sparse instru mentation. \nThe best strategy may be a hybrid approach combining all thre e techniques. A new\narray of acoustic transmitters and sensors\, the Sou th Pole Acoustic Test Setup\, was\ninstalled in three IceCube holes in Jan uary 2007. The purpose of SPATS is to measure\nthe attenuation length and both Gaussian and transient background noise for 10-100\nkHz acoustic wav es. Favorable results would pave the way for a large hybrid array. \nSPAT S is the first array to study the possibility of acoustic neutrino detecti on in\nice\, the medium expected to be best for the purpose. The first re sults from SPATS\nwill be presented.\n\nhttps://indico.nucleares.unam.mx/e vent/4/session/62/contribution/1282 LOCATION:Merida\, Mexico Kabah (Holiday Inn) URL:https://indico.nucleares.unam.mx/event/4/session/62/contribution/1282 END:VEVENT END:VCALENDAR