10.00 Powered system on and biased.
      Bias voltages and leakage currents ok (see att. 1). Ambient temp @23.1oC.
      
14.00 Shunji wanted to do some checks with the LN2 fill.
      Seems to perhaps be a problem with unshielded cables to the valve switches.
      With control box, outlet valve and cables to all valves behind LN2 tank, AIDA survives LN2 fill.
      Parts ordered to facilitate moving of components behind the LN2 tank, away from AIDA.
      Will carry out further tests once these have been fitted.

17.00 FWHM seem reasonable and similar to Dec 2016.
      n-side FEEs see average pulser FWHM of ~70-80ch. nnaida19 noticeably worse @ ~150ch. (att. 2+3)
      p-side FEEs worse with average pulser FWHM of ~200ch. nnaida13 worst of these, showing non-Gaussian peaks
with widths @ ~300ch. (att. 4+5)
      Will not attempt to solve this now as they must all be disconnected to sort problem with nnaida1.