...
- In Run 723 we noticed that the beam pulse profile appeared to have a doubled feature. Also see the monitoring histograms in Run723. Called MCC. The double feature will come/go through the night. He at least said sorry.
- Access to add more ice.
- 9:00 PM: Running now at 800 V with a 145 uA leakage current. Tried again to reduce the rate by moving S10 to 0.5 mm, but saw no particles on the DUT! Now to 2mm to verify that the DUT still exists. Don't want to upset the operators, will wait for shift change to go back to 1mm.
- 00:26: asked to increase slits from 1 to 2 mm. Particle count before was ~10 (but double peak, so ~5) and after is ~30 (still double peak, so ~15). We got this from looking at the cluster multiplicity in the 3rd telescope plane (basically no noise).