[dsg-hdice] Rack 2 test

[Xiangdong Wei]

Hi Amanda, 

After sending you the email this morning I paused the program again. The "un-Pause" caused the field drop again. After field recovery, the ramping was changed, too. It only took ~25s, instead of 30 as in the setting file, to finish each ramping. Since the ramping rate is different, I can't average the signals (they were taken under different conditions). So the run will be stopped soon, and you can start looking at the program any time. 

I'll be in the HDice in a few minutes. 

Thanks, 

Xiangdong 



Xiangdong Wei 

x-5266 


From: "Xiangdong Wei" <xwei at jlab.org> 
To: "Xiangdong Wei" <xwei at jlab.org> 
Cc: "Amanda Hoebel" <amandah at jlab.org>, dsg-hdice at jlab.org 
Sent: Tuesday, September 19, 2017 11:54:29 AM 
Subject: Rack 2 test 

Good morning Amanda, The nmr control rack 2 is set to run 1754 sweeps to verify that it can record the parameters for more than 1024 sweeps. It is at the 508th sweep now. Two problems were found this morning: 1. Clicking "un-Pause" button caused power supply to ramp down to 0. I caught it at 0.5001Tesla (It was set to sweep between 0.5728T and 0.6028T, but the point was showing 0). 2. The sweeps end up at different values, sometimes at 0.6028T (correct), other times at 0.6027T (wrong). It looks like the hold button starts before the ramping finishes. Would you think about it offline and modify the program after the run finish? It would be Thursday morning. Thanks, Xiangdong Xiangdong Wei x-5266 

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