Beam1a Tsys 19oct11


    The galfa data from 14oct11 was used to measure the ripple in the spectrum caused by the fiber optics. On 19oct11 the fiber connectors were cleaned up stairs and downstairs.
    The galfacts data taken 19oct11 after the cleaning showed that beam1a Tsys was 150 kelvins (.ps) (.pdf)
On 20oct11 the fibers for beam 1a were switched to:
After the fiber switch the Tsys for beam1a dropped backed to around 30 Kelvin.
Looking at the cal deflection plots for a2130 from 20oct11 beam1a cal deflection now has a +/- 2% ripple that varies with za.

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