Date: 07/04/2018

FC - 4 = 410 - 260 = 150 pA

We moved the target ladder to position V (35.022mm) - CH2 Target IV

At 15:09 we started the DAQ for 5.0 MeV 7Be in 2+ charge state bombarding CH2 IV

• DT = 0%
• Trigger rate ~ 10Hz
• Event mult = 69.7
• Save name recorded on paper logbook as 180407111531 -> same as save name used for 7Li -> emailed Raffaele to check whether there are other saves starting with 180407......

At 16:39 the DAQ was stopped, RT = 01:29:07, # good events = 68068

Checked beam current due to low trigger rate, FC-4 = 405 - 260 = 155 pA

Central and downstream irises closed, target ladder set to position VII - 3mm collimator

FC - E1 = 63 - 5 = 58 pA, Transmission ~ 33%

Stopped beam, Time ~ 17:00, decided to stop and dismount detectors

17:00 pressures read:

• TPU1 = 2.2e-6 mBar
• TPU2 = 8.2e-7 mBar
• TPD1 = 1.3e-6 mBar
• TPD2 = 1.5e-6 mBar
• CHUP = 1.0e-5 mBar
• CHDW = 2.7e-5 mBar

Detector status:

• Central S2 bias = -129.9V, leak I = 18.71uA
• diode bias = -70.1V, leak I = 0.00uA
• Downstream S2 bias = -130.1V, leak I = 2.84uA