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RunTimeTypeFlange board orientationB-field flange board (Gauss)B-field FEB (T)Online displayHigh-speed okNotes
baseline110:43Dry run200baseline1.pngYStable condition, AVDD and V125 are stable (<10mA).
Noise looks pretty flat throughout hybrid but with the scale it's not obvious. Need detailed calibration plots.
What are the noisy channels at the extremes (~200ADC)? 
baseline211:01flange board scan21720baseline2.pngYNo effect visible.
baseline311:06flange board scan2200,300,4000 YNo effect visible.
baseline411:10flange board scan2300, 500,6000baseline4.pngYNo effect visible.
baseline511:16flange board scan2450, 680, 9000baseline5.pngYNo effect visible.
baseline611:21flange board scan1900 across board0baseline6.pngYNo effect visible.
baseline711:25flange board scan11200 across board0baseline7.pngYNo effect visible.
Move FEB into magnet bore. Keep flange board at known working distance from above scan.

   

 

  

 

  
baseline811:44FEB scan200.3baseline8.pngN

After moving into the magnet the AVDD and V125 started to be unstable. Varies within 100mA. Not sure this happened before or after the field was turned up.
Note that we saw bit errors on the high-speed card so most likely it happened when we were moving things and probably not during ramp. It's not clear at least.
The edge channel noise went down to 100ADC which changes the scale. It makes it hard to compare from online display compared to previous runs.
Ben had seen the uneven noise correlate with AVDD being unstable. Perhaps it was just the scale that changed? Not clear it's from the B-field.
Need calibration scripts to compare reliable across the hybrid.
One thing that is there is apv0 has a consistently a little higher noise and seem to get a more uneven noise across it. It's now 70 at one edge and 56 at other end. This was not in previous run?
Also, a noisy channel on apv4 showed up? It didn't seem to be in the previous run.

baseline911:51FEB scan2

0

0.3baseline9.pngYRebooted rxTest board, looks ok now.
Same as above regarding noise and stability of currents.
baseline1011:55FEB scan200.6baseline10.pngYSame as above regarding noise and stability of currents.
baseline1112:02FEB scan200.96 baseline11.pngYNoise jumped up. By about ~8ADC on APV0 and the other chips had a ~5ADC increase as well.
baseline1212:04FEB scan200.96baseline12.pngYSame as above overall.
The noisy channel relatively smaller. 
baseline1312:09FEB scan201.49baseline13.pngYNoise dropped to levels before baseline11?
Similar shape as before.
This is strange.  
baseline1412:12FEB scan201.49baseline14.pngYSame as above.
baseline1512:15FEb scan200.6baseline15.pngYNoise dropped down by ~4ADC?
Same shape as above.
baseline1612:20FEB scan200.0baseline16.pngYNoise increase by ~4ADC compared to previous run across most hybrids.
Increase was 8ADC for apv0.
Strange.
baseline1712:24FEB scan201.48baseline17.pngYThe noise when down to levels similar to baseline15 above.
Strange.
     0  Power cycle of FEB and signal flange board (and hybrid).
AVDD and V125 are now stable for about 2 mins before the next run was started. 
baseline1812:27FEB scan200baseline18.pngYEdge channels now back up to 170ADC which causes the scale to be hard to compare again.
Looks like noise is not so different in general compared to previous run.
apv0 seem to be more flat in noise spectrum?
At about 90% of the run there was a sudden "jump" in the noise across 9 channels on apv3 and apv4. Looks "digital"...
baseline1912:33FEB scan200baseline19.pngYSame as above except the spikes are not there.
     ramp up  During ramping the AVDD and V125 starts fluctuating.
Could be induced by B-field but not obvious as we only saw this once for sure. The previous case (run 8) we didn't see it jump exactly during ramp to much lower field (0.3T).  
baseline2012:40FEB scan201.48baseline20.pngYThe system is now back to it's state with lower edge channel noise ~120ADC as above when AVDD and V125 were fluctuating.
This again changes the scale so we need calibration plots.
The shape and noise levels looks consistent with the runs above.
 12:42   1.48  Power cycled FEB, signal flange and RxTest board. Note that field was ON here to test if we could get into a non-fluctuating state with field ON.
Never got back to a state where the AVDD and V125 wasn't fluctuating.
baseline2212:45FEB scan201.48baseline22.pngYConsistent with runs above.
Note that the magnet tripped off after about 90%.
Please check with calibration plots if we can see any effect as a function of time on this one in particular.
     trip YMagnet power supply tripped within the run baseline22 above.
 12:50   0  Power cycled flange and FEB board.
Cannot get into a state with non-fluctuating AVDD and V125 now, even if magnet is OFF.
baseline2312:49FEB scan200 YSame as above.
After ~90% we got the jump in noise on a couple of channels similar to run 18.

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