This heat-up resulted in the vacuum level enhancement from 4x10^-6 Pa to 1x10^-5 Pa whose main part is water. TM_OLPEV_LEN values seemed to increase slightly and to show no drastic changes after heating up around 11am on 5th Feb.

Over 10^-5 Pa at IYA was again maybe because of over 180K temp at IM.

I turned off IM heater of ITMY.

I applied the current o IM heater of ITMY.

I turned off the heater because IY temperature was stopped to go down.
I will turn it on again later before ITMY was cooled down below 30K.

I turned on IM heater for ITMY.
Setting can be seen in fig1.

9V was applied to the EX IM heater, although the IM temperature was ~40K. So I changed the voltage for the IY heater from 3V to 7V because the temperature of IY IM was also around 40K as EX IM.

I increased the voltage from 7V to 7.5V.

I increased the voltage from 7V to 9V, and from 9V to 9.5V.

I adjusted the voltage to around 10.5V to find the equilibrium temperature state in this morning. Then the present temp is fluctuating around 35 K.

I increased the voltage from 10.5V to 10.6V because the temp started decreasing again.