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Homestake meeting minutes, 06/26/14

Attending: Tanner, Vuk, Victor, Noah, Gwynne, Shivaraj

Homestake wiki: https://zzz.physics.umn.edu/groups/homestake/home

Our agenda:

1) Homestake update (Vuk)

1. GPS, power, network

2) UMN test setup (Tanner)

New optical transmitters and receivers from Liteway, sending both 1pps and NMEA signals over a single fiber. Reduced power requirements. Operated a single receiver off of a battery, along with the digitizer, baler, and seismometer - lasted 5 days with 55 amp-hour battery. So 20 batteries like this would allow us to run for 3 months.

lower noise

lasers

next week will play with daq, try to stream data.

3) Analysis of existing data

1. Estimation algorithms (Shivaraj, Eric, Noah): Noah's report

Noah: trying to understand whether using multiple frequencies allow us to reduce the checker-board pattern, i.e. aliasing, that appears when the wavelength is small compared to the distance scale between seismometers

1. Updated directional analysis note pdf