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 brief Antenna (ANITA). ANITA is a balloon-borne scan that searches for radio signs originating from ultra-high power neutrinos and cosmic rays interacting with the Antarctic ice or air. the quest for ultrahigh power neutrinos of astrophysical beginning is without doubt one of the awesome experimental demanding situations of the twenty first century. The ANITA scan was once designed to be the main delicate tool to ultra-high strength neutrinos that originate from the interactions of cosmic rays with the cosmic microwave heritage. The technique and result of the neutrino and cosmic ray searches are awarded within the thesis.
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Extra info for A Search for Ultra-High Energy Neutrinos and Cosmic-Rays with ANITA-2
Here, the VPOL signals were further split into four separate paths, with each signal path filtered into one of four bands, shown in Fig. 15: • • • • Low: 200–350 MHz Mid: 350–700 MHz High: 600–1,150 MHz Full: 150–1,250 MHz The filtered sub-band channel signals were then passed through a tunnel diode, also situated in the SHORT. The tunnel diode effectively acted as a square law detector and output a unipolar pulse that tracked the power passed through the diode. The SHORT outputs were then fed into a field-programmable gate array (FPGA), mounted on the relevant SURF board for the channel in question.
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A Search for Ultra-High Energy Neutrinos and Cosmic-Rays with ANITA-2 by Matthew Joseph Mottram