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User name A. Tobias
Log entry time 19:41:49 on November23,2010
Entry number 341414
keyword=Target: Loop 1 & 2 JT Valves adjusted closed a liitle in the past 3.5 hrsOver the course of the Moller measurements, I have been tweeking the JT valves closed for both targets, Loop1 LD2 and Loop2 LH2, since the 15K Cryo Supply temperature has been decreasing over the course of the Swing shift. Note that at the beginning of the shift, we were drawing about 11.5 g/s cryoflow, and now it is about 9.5 g/s. When we get back to production mode, one will have to watch the two Loops and make sure the JT Valves are adjusted accordingly (open up a bit) when Hall C target starts taking beam again.
FIGURE 1
FIGURE 2
