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 knowledge from the second one flight of the Antarctica Impulsive temporary Antenna (ANITA). ANITA is a balloon-borne test that searches for radio indications originating from ultra-high strength neutrinos and cosmic rays interacting with the Antarctic ice or air. the quest for ultrahigh power neutrinos of astrophysical starting place is among the remarkable experimental demanding situations of the twenty first century. The ANITA test used to be designed to be the main delicate device to ultra-high strength neutrinos that originate from the interactions of cosmic rays with the cosmic microwave history. The technique and result of the neutrino and cosmic ray searches are awarded within the thesis.

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12 ANITA-2 signal chain gains for HPOL and VPOL from antenna output to instrument box bulkhead 41 80 Gain (dB) 75 70 65 60 HPOL ave VPOL ave ± 1σ ± 1σ max/min max/min 55 500 1000 Frequency (MHz) Fig. 13 ANITA-2 signal chain noise for HPOL and VPOL from antenna output to instrument box bulkhead 250 HPOL ave Noise Figure (K) 200 VPOL ave ± 1σ ± 1σ max/min max/min 150 100 500 1000 Frequency (MHz) to ANITA-1, known as the LABRADOR chip, whereby ANITA could continuously sample waveform data but only digitise upon the issue of a trigger command [17].

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