11:05

Confirmed overlap is at 4 mm under new settings.

For unclear reasons, the bottom-left detector is not seeing the halo anymore since around 10:00. Rutherford still visible and if the left arm is moved in the counts at 5 MeV become apparent.

l s by 20 mm, r p in -> 36.5 mm /  64.6 mm

Target thickness 3E11 atoms/cm2. Beam intensity few E7 at injection. Coasting beam mode.

Data rate x10 compared with earlier. Stats as before - the reason is unclear.

Temps & Merger OK. We should be able to tolerate these rates.

Moved detectors in/out to make sure we were not clipping the beam. A few seconds of data may be present in R41_9

11:30

Checkloaded. Detector 2 is now counting more.

Moved to run 42. No other changes.

13:00

Realised cooler voltage was being read via fault g35 divider. Beam stopped

15:00

Switched to F20. Beam back on. Moved to run 43

Electron cooler voltage = 243.155 V

Collector current = 4.29 mA

Beam energy was slightly off, will try again