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| groups:homestake:meetings:20150625 [2015/06/25 09:53] – created mandic | groups:homestake:meetings:20150625 [2015/06/25 10:56] (current) – mandic | ||
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| Homestake Meeting Minutes, 06/25/15 | Homestake Meeting Minutes, 06/25/15 | ||
| - | Attending: | + | Attending: |
| Homestake wiki: https:// | Homestake wiki: https:// | ||
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| 1) Homestake array status (Gary, Tanner, Daniel, Pat) | 1) Homestake array status (Gary, Tanner, Daniel, Pat) | ||
| - | - data flow issues | + | * 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/ | ||
| 2) Next Homestake trip | 2) Next Homestake trip | ||
| - | - mid September date (No access on Aug 31, Sep 7, Sep 11-14, Sep 25-28) | + | * Gary: talked to PASSCAL that affects the schedule |
| - | - Tasks: | + | * Riccardo/ |
| - | a) weight drop experiments on the surface | + | * For the underground work, will need 2 weeks of underground access. |
| - | b) check on the 4 stations not online | + | * Homestake no access on Aug 31, Sep 7, Sep 11-14, Sep 25-28) |
| - | c) fix telemetry on LHS | + | * would be good for another person (Pat or Daniel) to go to Homestake on 9/8 and use the two underground days before Sep 11 to fix 2000E and harvest the data from Balers. |
| - | d) fix 2000E (new concrete pad and tile, re-orienting) | + | * Both Victor and Daniel might be going to a workshop on Sep 13-16. |
| - | e) replace balers on several stations (Ross, Yates, and probably some underground) | + | * Tasks: |
| - | f) underground excitation experiments | + | |
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| + | * look at the failed splitters and GPS transceivers | ||
| 3) data analysis | 3) data analysis | ||
| - | - calibration | + | * calibration: Gary knows how to do it, has to find time to run it and watch it. Takes about 3 hours per station. Can automate the process, so the whole array will take about 2-3 days. |
| - | - radiometer method | + | * Daniel: deep earthquake in Japan, trying to look at the free surface reflection. Trying to model the waveform, work in progress. |
| - | - other analysis | + | * radiometer method: Tanner rewriting some of the code to streamline it and make it more coherent. Doing comparisons recently between the new and the old codes and the new code is still having problems with the S-wave. ALso trying to add capability to look at the real data from Homestake. Also need information about how to apply calibration - to start with, a multiplicative factor in time-domain would do. |
| + | * Levi: looking at the power in the recovered maps, now have code ready to make histograms and study dependence in the detector configurations. | ||
| + | * Gary: nominal calibration constants are in the stage table in db.master. Conversion from counts to nm/s. | ||
| + | * analysis | ||
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| + | Next call July 23. | ||