Figure 2
(a) Refinement of the PID settings for the sample heater control loop. The configuration ensuring faster attainment of the setpoint (304.0 K) and minimal temperature overshoot corresponds to the black curve. (b) Same data as in (a) over the y-axis range (setpoint ± 4) mK. (c) Gaussian distribution of Tr values measured over a period of 2 h after reaching thermal stabilization: the standard deviation is 0.6 mK.  [article HTML]