E-viri
PDF
Recenzirano
Odprti dostop
-
Allison, P.; Banerjee, O.; Beatty, J.J.; Connolly, A.; Deaconu, C.; Gordon, J.; Gorham, P.W.; Kovacevich, M.; Miki, C.; Oberla, E.; Roberts, J.; Rotter, B.; Stafford, S.; Tatem, K.; Batten, L.; Belov, K.; Besson, D.Z.; Binns, W.R.; Bugaev, V.; Cao, P.; Chen, C.; Chen, P.; Chen, Y.; Clem, J.M.; Cremonesi, L.; Dailey, B.; Dowkontt, P.F.; Hsu, S.; Huang, J.; Hupe, R.; Israel, M.H.; Kowalski, J.; Lam, J.; Learned, J.G.; Liewer, K.M.; Liu, T.C.; Ludwig, A.B.; Matsuno, S.; Mulrey, K.; Nam, J.; Nichol, R.J.; Novikov, A.; Prohira, S.; Rauch, B.F.; Ripa, J.; Romero-Wolf, A.; Russell, J.; Saltzberg, D.; Seckel, D.; Shiao, J.; Stockham, J.; Stockham, M.; Strutt, B.; Varner, G.S.; Vieregg, A.G.; Wang, S.; Wissel, S.A.; Wu, F.; Young, R.
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 06/2018, Letnik: 894Journal Article
The Antarctic Impulsive Transient Antenna (ANITA) is a NASA long-duration balloon experiment with the primary goal of detecting ultra-high-energy (>1018eV) neutrinos via the Askaryan Effect. The fourth ANITA mission, ANITA-IV, recently flew from Dec 2 to Dec 29, 2016. For the first time, the Tunable Universal Filter Frontend (TUFF) boards were deployed for mitigation of narrow-band, anthropogenic noise with tunable, switchable notch filters. The TUFF boards also performed second-stage amplification by approximately 45 dB to boost the ∼μV-level radio frequency (RF) signals to ∼ mV-level for digitization, and supplied power via bias tees to the first-stage, antenna-mounted amplifiers. The other major change in signal processing in ANITA-IV is the resurrection of the 90° hybrids deployed previously in ANITA-I, in the trigger system, although in this paper we focus on the TUFF boards. During the ANITA-IV mission, the TUFF boards were successfully operated throughout the flight. They contributed to a factor of 2.8 higher total instrument livetime on average in ANITA-IV compared to ANITA-III due to reduction of narrow-band, anthropogenic noise before a trigger decision is made.
