08:27

No run going.

Temperatures OK - attach

Attempting to bias channel 3 again. Slowly ramping up.

V = 60, I = 5.3

V = 70, I = 6.1

V = 80, I = 9.0 --> 6.2 (unstable). Decreasing bias.

V = 70, I = 6.0 (stable again)

Leaving at 70 V for a while to condition (?)

Resetting the gnuplot graph. Old caen_current.dat moved to G22-205-caen_current.dat and copied in /TapeServer/G22-205

10:10

Temperatures OK

Leakage current on channel 3 showed some issues, back to stable. See attached.

11:00

Temps OK

Leakage current stable.

Increased bias on channel 3 to 80 V. I = 6.2 uA stable. Leaving for a while.

12:45

Temps OK

Leakage current stable

Increased bias on channel 3 to 90 V. I = 6.3 stable. Leaving for a while.

13:30

Temps OK

Leakage current stable.

Increased bias on channel 3 to 100V. I = 6.3 stable. Hopefully it holds until the end of the beam time.

20:00

Leakage current on channel 3 had issues again and bias was reduced to 50 V. Remained stable. Turned to 60 V now. Still stable. See attachement.

FEEs on detector for -> MEC

Temps OK - attach

Checks as before - attach

Rates OK (four fees not counting as expected) - attach

Deuterium beam in the ring at 2 MeV/A approx 2E8 pps, significant H2+ contamination.

Deuterium target working, fluctuating around 5E12-1E13 atoms/cm2

Vacuum in YR09 - 3E-10 mbar

Beginning beam-target overlap measurements soon.