On 23/02/2018:
At the end of the February 2018 shifts the detectors bias settings were:
S2 bias = -130.3V, leak I = 2.42uA
Pin diode bias = -70.1V, leak I = 0.00uA.
Both detectors were switched off, the preamp power was also switched off.
At 18:22 the chamber pressures read:
TPU1 = 2.3e-6 mBar
TPU2 = 6.9e-7 mBar
TPD1 = 1.6e-6 mBar
TPD2 = 1.7e-6 mBar
CHUP = 5.7e-6 mBar
CHDW = 1.5e-5 mBar
We closed the manual gate valve and T1600 Backing Valves. We switched off the turbos and roughing pumps Ecodry 1 and 2.
The nim bin for the quad bias and other nim modules was switched off. The Lecroy 1434A CAMAC Crate was switched off. The RAL shaping amp crate was switched off.
We put away the S2 and pin diode detectors.
The alpha source was removed from the target ladder.
The target ladder was remounted in the following configuration:
| Position |
Target |
| 1 |
Blank 3mm |
| 2 |
No Target
|
| 3 |
CH2 VII |
| 4 |
CH2 III |
| 5 |
CH2 IV |
| 6 |
No Target |
| 7 |
No Target |
We performed a general tidy-up around the chamber and workspaces we used during the past 9 days.
I took the PB-5 Pulse Generator and three 64 Way - 2X32 Way ribbon cables (for minor modification) back to Edinburgh.
I also took the mylar we discovered in the beamline on Tuesday 20th as a keepsake/ reminder anything can happen
At ~20:00 we declared victory for the week. |