22:15

New run 76 - beam on target with definite target overlap [coasting]

Cooler voltage setpoint 247.1 V.

FC20 read value 246.55 V.

Right arm at 64.60 mm

Left arm IN at 36.54 mm

FakeMotion script running

horizontal beam position 1.0 mm (new beam target overlap)

vertical beam position  -5mm

Beam intensity 7.5e+7 particles.

Target density ~6.2e11 at/cm2

Target temperature is 38.5 K. Values of E1 is 820 Hz, 2.6A, 1.85e-1 mbar

00:15

System and detector check is OK. E1 pressure is increasing slowly. target 4e+11/cm2

02:15

System and detector check is OK. E1 pressure is increasing slowly. P=2,2e-1 mbar Pump frequency is 807 Hz, 2.7A. Target 5e+11/cm2

03:15

System and detector check is OK. E1 pressure reaches 2,3e-1 mbar, thus flow is decrease a bit. Pump frequency is 800 Hz, 2.8A. Target 6e+11/cm2

04:15

System and detector check is OK. E1 pressure is stabilized. New values: 2.07e-1 mbar, 810 Hz, 2.8 A. Target 5e+11/cm2. Resonance peak not so visible- see attachment 1.

05:43

System and detector check is OK. E1 pressure is slowly increasing. New values: 2.13e-1 mbar, 807 Hz, 2.8 A. Target 5e+11/cm2. Beam intensity stable at 7e+7 particles.