AMY CONNOLLY'S PHYSICS WEB PAGE

Phone: 310-206-8573

Writeup of our first visit to the Cote Blanche salt mine in May of 2006 to measure radio attenuation lengths in the salt. We have just completed a follow-up trip, and are currently analyzing the data.

Quick writeup in ps and pdf formats of an analysis of power powers from measurements of transmission through rough surfaces at UCLA.

Trigger study in ppt and pdf.

Talk given at ARENA on June 29th, 2006 on "Status of SalSA (and ARIANNA)."

Talk given at CALOR06 on June 6th, 2006 on "Studies of the Energy Resolution of the ANITA Experiment."

Plot comparing the parameterization of the Askaryan pulse from astro-ph/0003315 and astro-ph/9706064 (in green) with that given in the more recent paper astro-ph/0512337 (blue).

Seminar given at the University of California, Davis on May 2nd, 2006.

Talks given on ANITA and SalSA (SalSA talk was a shared talk with Pierre Sokolsky from the University of Utah-first 25 slides are Pierre's) for the International UHE Tau Neutrino Workshop in Beijing on April 26th, 2006.

Checking our parameterization of the Askaryan signal in our simulations to Figure 3 and Figure 4 of J. Alvarez-Muniz et al., astro-ph/0512337.

Talk for the University of Chicago HEP seminar 03/27/06.

Writeup ( here in pdf form ) of power budget for borehole calibration.

Military dipoles to be used to transmit signal for calibration studies from beneath a borehole: S11 measurement of the old antenna and transmission of the old antenna derived from the previous plot. And here is the S11 measurement of the new antenna and transmission of the new antenna derived from the previous plot.

Slide on estimated power budget for calibration studies from a borehole.

Writeup about some issues with regard to noise studies. Here is is in pdf form.

Plots for noise studies.

• Plot of cumulative events seen vs. distance out to the horizon.

• Talk on an energy resolution study I am working on for ANITA. Here is the Powerpoint file and here is the pdf.
  

• How well can we do with 8 discones hanging below the ANITA payload. Here we require 3/8 discones to fire at 2.3 times the expected noise level, concident with at least one layer of seaveys on the payload also passing the trigger.
  

• In order to plan a site for calibration studies where radio signals are emitted from beneath the ice, we would like to find a site where a borehold exists and where the Anita payload is likely to pass within the horizon.
  

  This plot shows the distance from the balloon to the borehole for nine different recent flights for six different borehole sites.

  This plot shows the minimum distance from balloon to borehole for the each flight for different borehole sites.

  This plot shows the expected V_signal/V_noise as a function of borehole-balloon distance based on this study.

• Where are detectable interaction relative to the payload? This plot shows where the detectable interactions are for a fixed payload position and an arbitrary livetime. This plot has many interesting features:

  • The position on the payload is shown along the 80 deg. S, which is a typical latitude based on previos flights. The longitude is (arbitrarily) at 45 degrees E longitude.

  • The dotted circle shows the horizon corresponding to a payload altitude of 40 km, 718 km from the payload.

  • The purple dots show the position of the neutrino interactions that trigger the payload. An event is only shown if the neutrino was more than 10% likely to survive its trip along its chord through the earth. These events make up 95% of the total events that trigger the payload.

  • The region directly below the payload where there are no events that pass is a "hole" where the geometry of the neutrino directions detectable, and the Cerenkov angle at which the RF is emitted precludes detection.

  • Within the horizon, at lower latitudes (most southern) the interactions are more numerous because the ice is thicker in this region. The interactions are more sparse towards the coast of the continent and beyond the coast there are no interactions since RF emitted under water would be attenuated.

• This plot shows the effective Volume * str for Anita, Glue, and Rice (06/10/04).