groups:homestake:meetings:20150625 [School of Physics and Astronomy Wiki]

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Homestake Meeting Minutes, 06/25/15

Attending: Tanner, Daniel, Levi, Vuk, Victor, Riccardo, Gary

Our agenda:

1) Homestake array status (Gary, Tanner, Daniel, Pat)

Daniel: two stations on 4100 are still down, there was a fiber failure yesterday. Jamey thinks timing should still be getting to them. They should still be working and data logging, but we may have to get the data from the baler eventually.
Gary: progress with the highschool, but didn't solve it yet. Should probably call the network person there to fix it.
IRIS has caught up with our data.
Tanner: still have problems with antelope at UMN. Admin started working on it yesterday, trying to monitor the relevant processes and the disk on which the software is running. Data flowing to Caltech at least most of the time. Copied data from Homestake to UMN to fill all gaps. There is a small gap now at Caltech.
Daniel: how many transceiver/splitters do we have left. Vuk check.

2) Next Homestake trip

Gary: talked to PASSCAL that affects the schedule - they can get the equipment to Homestake by Sep 15. So the underground excitations will have to take place after the surface. Can do surface Sep 11-14. PASSCAL has a device that plugs into the data logger computer that Lee is bringing, which syncs the computer time to UTC, so that the data tagged on each shot (weight drop) is accurate to better than ms. The weight flips a switch when it hits the ground, and this gives the time of the drop/hit.
mid September date (No access on Aug 31, Sep 7, Sep 11-14, Sep 25-28)
Tasks:
- weight drop experiments on the surface
- check on the 4 stations not online
- fix telemetry on LHS
- fix 2000E (new concrete pad and tile, re-orienting)
- replace balers on several stations (Ross, Yates, and probably some underground)
- underground excitation experiments
- look at the failed splitters and GPS transceivers

3) data analysis