TITLE: 08/12 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Corrective Maintenance
SHIFT SUMMARY:
H1 is in a vacuum pump down state since last week. We are still pumping down.
Current corner station vacuum pressure occording to VAC channel H0:VAC-LY_Y1_PT120B_PRESS_TORR : 6.25e-07
VAC team decided to open the 2 of the 4 Gate valves today. This allows them to pump down with more vacuum pumps thus increaseing the rate at which the vacuum chamber is evacuated.
19:16 UTC Vacuum pressure high at BSC8, BSC2 and HAM6 This is because Gate Valve 1 was opened by Janos and Gerardo.
21:55 UTC Vacuum team opened Gate valve 2, this opened BSC7 to the rest of the CS.
GV7 was soft closed, I was monitoring H0:VAC-LX_X3_PT134B_PRESS_TORR and saw an increase in pressure.
23:23 UTC Janos put more pressure from the intrument air onto GV7 which stopped the increase in pressure at H0:VAC-LX_X3_PT134B_PRESS_TORR.
LOG:
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 14:35 | FAC | Karen | Optics & Vac Lab | N | Technical cleaning | 14:53 |
| 15:40 | FAC | Karen & Kim | LVEA | N | Technical Cleaning, Kim out, Karen still in. | 18:08 |
| 19:05 | VAC | Gerado & Janos | LVEA | N | Opening GV1 Between BCS8 and BSC1 | 19:42 |
| 21:30 | VAC | Gerardo & Janos | LVEA | N | Opening Gate valve 2 | 22:30 |
| 21:52 | FAC | Tyler | LVEA | N | Talking to Gerardo | 22:22 |
| 22:42 | VAC | Gerardo Fil | HAM Shaq | No | Running cables | 23:36 |
