The beam is fluctuating between 18 kHz and 22 kHz in VAMOS (24 to 27 kHz in CATS1)
Division on CATS1 trigger is 1000
Division on VAMOS trigger is 1000 in the GMT.
The target is stable with 6.00 K temperature, P=700mbar
We fill 4He every 5 to 5:30 hours and we use more or less 5.5 cm (i.e. 35l) for each filling.
The next bottle change is foreseen on wednesday morning.
We had 2 crashes of the target acquisition this afternoon. We think that it is due to the temperature. We added a fan and we slow down the reading of the temperature to every 12s (instead of 10s). |