TIC121 was down to 27K
warm return valves were wide open
opened supply valves CV143 and CV146.
TIC121 went up to about 37K
Mu1 return temperature went down to about same temp as TIC121 so set Mu1 to 
cold return. Open CV145 then close CV151. Mu2 return was still > TIC121 so 
kept it in warm return mode. Adjust turbines as required.
After about 20 minutes Mu2 return temp dropped down to about equal to Mu1 
return temp of about 38K. Then set Mu2 to cold return. Open CV147 then 
close CV143. TIC 121 drops to 30 K. Even though Mu1 and Mu2 return temps 
greater than TIC121 I will keep it in //cold return mode to see if the core 
solenoid temperatures will start to fall. To maximize the use of the 
cooling from T2 outlet temperature CV155 is tweaked open to its maximum 
stable opening. This helps cool the lower heat exchangers. If this works 
then cr_c1 and cr_c12 should start to tick downwards. If they keep rising 
then have to switch back to //warm return.

cr_c1 and cr_12 are both at about 45K and heading slowly down, so the 
gamble of going to // cold return worked. Maximum opening of CV155 is 
limited by CV204 goes fully closed and suction pressure begins to rise 
above set point. Adjust cv155 to keep cv204 just at the closed point. Keep 
tweaking cv155 and turbine speeds as things get cooler.

Even though cr_c1 and cr_c12 have begun to tick down, cr_c7 and cr_c6 are 
actually ticking up. This is probably a wave of warming propagating through 
the solenoid. As long as the two inlets are falling in temperature then 
things are going in the right direction. Once the warm wave travels through 
the outlets will begin to cool as well.

Raised PIC229 to 11Bar. Started to close HIC155. Cooling rates improve.

Coils temps <10K.Switching to series mode.

Power leads have flatlined but still building LHe level.

80K shield is down to <60K Liquid level not building. Power leads rippling 
and warming. T1 inlet 85K with 10%heater load.
Lowered the set point of TI121 to 17K. Shut off flow to the 80K shield to 
try and warm them. Turbine 1 inlet temp dropping (83K)
Power leads cooled and stablized, coil temps came down. Leaving it for 1/2 
hour to evaluate.

Donald Arseneau reporting.

It is looking pretty good, so I came back in with the intent of energizing 
the magnet.  Doug should be up now or soon, so I'll wait a little for you 
to see this.  If you do, call the m9 counting room 222-7379.  After waiting 
a while, I will just forge ahead.

Solenoid quenched at about 6:00 tonight.
I restarted the compressor, then the cold box and turbines. When cold box 
was at 25K I started flow to the solenoid in parallel cold return.

Temps bottomed out at ~16K. Switching to series mode.

opened power lead flow about 40 minutes ago. ~12K will let them stablize. 
LHE level >20%

No indication of problem. Turbines still running, but no flow to solenoid. 
Started flow. Solenoid ~20K.

After restarting flow to the solenoid yesterday in // cold return mode 
TIC121 just refused to go lower than about 29K even when we closed CV155 
all the way. Tried various things, switching to // warm return, changing 
opening of CV155, setting TIC121 to auto, even tapping TIC121. Finally 
tried reducing flow to solenoid by reducing // warm return valves to about 
70% open to see if possible to cool just refrigerator a bit.

TIC121 temp fell a bit and then inlet temperatures to solenoid began to 
fall and solenoid slowly began to cool even though the mass flow to the 
solenoid was reduced. Guess is that with solenoid homogeneusly at about 30K 
there was not much resistance to flow so turbine massflow was starved just 
enough to stall further cooling.

After temps were on a good downward trend Doug switched to //cold return. 
At about 16:00 yesterday I reduced CV155 to about 70% and waited a bit to 
confirm that temps were falling and then left the system to cool until 
later that evening.

About 21:00 last night the solenoid temps had not changed much, pretty well 
flat lined. I guess my reducing CV155 stalled the cooling. Called Don 
Arseneau and asked him to increase CV155 to about 80% open. Temps slowly 
began to fall. Asked Don to look at graph of temps later in the night and 
if they fall down to a flat line to then reduce CV155 a bit to get the 
temps trending further down.

This morning CR_C1_ENT has fallen to a slightly upward trending flat line 
of about 12.7 K. Probably ready for switching to series mode by whoever 
gets to the system first this morning.

Cool down continues.

Power lead temps were drifting up, tried to tweak TIC121 and HIC141 to 
unstall powerlead flow. Got quench. Restarted series flow, building LHe 
level.

Powerleads seem stable.

Solenoid tripped off Sunday. Restarted compressor and cool down of cold box.

Return flow temps from solenoid about 40K, TIC121 at about 40K so switching 
to //cold return.
Starting with slightly reduced flow through cold returns, CV145 and CV147 
at about 65% open.

restarting system.
Compressor would not start. Idid not see anything that would not let it 
start. Pushed rest button upstairs, and reset contactor. Compressor started.
preparing to start flow to solenoid in // cold return.