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User name R. Michaels
Log entry time 14:02:42 on September 2,2009
Entry number 287510
keyword=BPM cavities (part IV).Correlation of cavity BPMs versus striplines. Three of the four cavities BPM look ok, showing there is some hope ! BPMCAV3X is suffering a presumably busted ADC18 (see previous halog). The sign of cav3y is opposite to bpm4by. I don't have resolution values yet, but just by eye looking at the width of the correlation the cavities are at least comparable to the striplines in resolution. More on that another time. That's it for now. The conclusions are: we need to adjust pedestal offsets or attenuation for BCMCAV3 and we need to swap ADCs or at least swap channels for BPMCAV3X. There are 2 spare V-mode channels. Let's try the 1st slot 4th chan.
FIGURE 1
