There was a cryo burp, now we have recovered and would like to set up the detectors again. What is the procedure?
If the 10mK CAN temp went above 500mK, the detectors probably need to be baked. Bake for a few hours, flashing both towers simultaneously with all the default settings on the LED Bake GUI, with Bake On Time = 0.07 mins. If the temp didn’t go high, flashing for a couple of cycles should be enough. The number of cycles is determined by the total Bake Time, which is divided by Bake Off Time + Bake On Time to arrive at the number of cycles. After this, once should ZAP the detectors one by one to get rid of the trapped flux. One MUST Reset Each Board before Zapping the board. Failure to do so may cause in oscillations causing high trigger rates. So, bring up the FEB GUI and first do Reset This Zip, followed by Zapping all 4 Squids at 5V. Do this for all the detectors one by one. Now, do a test run and verify the Noise Data looks good. If any detector has a lower bandwidth compared to normal, please repeat the Zapping procedure from above for that detector.
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