Download A Search for Ultra-High Energy Neutrinos and Cosmic-Rays by Matthew Joseph Mottram PDF

By Matthew Joseph Mottram

The winner of UCL's annual HEP thesis prize, this paintings describes an research of the information from the second one flight of the Antarctica Impulsive temporary Antenna (ANITA). ANITA is a balloon-borne scan that searches for radio indications originating from ultra-high strength neutrinos and cosmic rays interacting with the Antarctic ice or air. the hunt for ultrahigh power neutrinos of astrophysical starting place is without doubt one of the amazing experimental demanding situations of the twenty first century. The ANITA test used to be designed to be the main delicate tool to ultra-high strength neutrinos that originate from the interactions of cosmic rays with the cosmic microwave history. The method and result of the neutrino and cosmic ray searches are awarded within the thesis.

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Three sets of data storage devices were flown on board the ANITA-2 instrument. Two arrays of eight 1TB MTRON solid state drives were used along with a spinning hard-drive that was housed in a shock mounted pressure vessel called the ‘neobrick’. Each of these three storage devices held an independent set of flight data. 50 4 The Antarctic Impulsive Transient Antenna Fig. 22 A schematic of the ANITA-2 flight software architecture, figure from [2] Fig. 23 The ANITA-2 flight path. 5 days of live-time.

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Note that only five φ-sectors of antennas (from a total of 16) are shown, all other antennas are assumed to have not been triggered command in any two of three rings within the same φ-sector in a ∼ 10 ns window (see Fig. 18). e. non-thermal) event. Global trigger rates were typically 10 Hz, though rates of up to 25 Hz were observed for periods of the flight. 4 Trigger Masking A further aspect of ANITA-2 that marked a great improvement over ANITA-1 was the introduction of directional trigger masking.

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