Marla Cervantes wrote:

Monday, September 03, 2018, 10:17 Graphite insert fully loaded with UCx was loaded into previously TaC coated target container. No end caps on Ta target container. Weight of graphite tube + UCx discs = 27.118 g Currently pumping down in evap1. Tuesday, September 04, 2018, 10:17  IGP1 = 4.02e-6 Torr Tapped up TBHT and TGHT manually to 100 A @1 A/s with pauses of 20 s. Wait for 40 min to pressure to stabilize. Max pressure 1.38e-4 Torr. Final pressure 5.93e-5 Torr. Tuesday, September 04, 2018, 11:46  Good vacuum 5e-1 Torr Bad vacuum 8e-1 Torr Initiating auto ramp for TGHT @ 10 A/min to a max setpoint of 520 A Initiating auto ramp for TBHT @ 5 A/min to a max setpoint of 245 A  Tuesday, September 04, 2018, 12:54  After achieving 520 A with auto ramp, manually tapped to 599 A. Manually tapped back to 550 A.

 Friday, September 21, 2018, 10:21

Ramping down heaters at 2 A/min and 1 A/min for TGHT and TBHT.

 Wednesday, June 07, 2017, 10:00-12:00: Cooling was split/routed from two bottom lines with tees and run to the turbo pump.

 Thursday, September 07, 2017, 11:00 -12:00

The roughing pump was disconnected from Evaporator 1, along with the exhaust/ventilation. No contamination was found on swipes.

The oil was refilled.

The roughing pump was then moved away from the PLC to allow access for Dave Morris. The RP can be reconnected and tested after the PLC work is complete.

Work permit # I2017-09-07-1

Wednesday, September 20, 2017, 08:00: 

-A new ion gauge was installed yesterday afternoon and the old one removed. The old IG was found to be contaminated (300 cpm) and as of 20/09/2017, it is double bagged and stashed underneath the evaporator for the time being. 

Completed under work permit: I2017-09-19-9

-The roughing pump was reconnected this morning without issue.

 Tuesday, June 26, 2018, 09:30. Gloves on evap 1 changed out. 

The original right one was otrn. Left was o but worn. Both replaced with new gloves.

On Tuesday it was noted that evaporator 1 was not pumping down properly. It was vented and the seal & seal face wiped with a cloth. The initial pump down rate was faster, however after 48 hrs, it has still not pumped down to appropriate levels. 

Thursday, March 21, 2019, 08:59: IV1 closed & TP1 off. 

Oiled as per work permit:  I2019-03-26-2.

Tuesday, March 26, 2019, 08:53: Start RP1

Tuesday, March 26, 2019, 09:03: Holding at 0.303T on CG2. 

Tuesday, March 26, 2019, 09:10: Turned off RP1. Vent chamber slightly. Close VV1. Restarted RP1.

Open RV1.

Tuesday, March 26, 2019, 09:13: Vacuum stalls out at approx 0.300T.

Tuesday, March 26, 2019, 09:16: Shut off RP1. Contact Vacuum group.

 Checked as per work permit: I2019-03-26-5

Tuesday, March 26, 2019, 13:50: Filter checked. OK

Tuesday, March 26, 2019, 14:00: Tees checked. OK.

Tuesday, March 26, 2019, 14:05: Line / bellows. Fail

Tuesday, March 26, 2019, 14:11: New line / bellows. OK 

Tuesday, March 26, 2019, 14:19: TP1 on, IV1 opened. Vacuum @ 3.5e-05T and dropping.

Pumping down evap1. Dispose of the old line. Replacement successful. No contamination was found on the swipes.

Tuesday, March 26, 2019, 14:36: Vacuum @ 1.12e-05T and dropping. 

 One of the TBHT bolts  fell out of reach and may be sitting on the isolation valve or TP.

Remove TP as per WP:  I2019-11-05-9

Tuesday, November 05, 2019, 14:48: Completed. Found 2 TBHT bolts, a broken insulator, one small vented screw, and a piece of rubber.

Turbo pump mesh clear. Magnetic grabbing tool left in Evap 1 to potentially pickup /  grab materials before they fall down the hole if needed. The tip of the tool is contaminated.

Tuesday, November 05, 2019, 15:03: Evap 1 pumped down. TP1 started, IV1 opened. Ok. 

 Replacement of electronic / controller head from INIFICON - BPG to Agilent - Model: FRG-730 due to EVAP 1 trips.

Monday, June 01, 2020, 09:37: Swap complete. 

 Replacement of electronic / controller head from INIFICON - BPG to Agilent - Model: FRG-730 due to EVAP 1 trips.

 INIFICON -  BPG - SN: 232

PN: 353-573

Tuesday, August 18, 2020, 10:38: Control head for IGP1 swapped with bagged one.

Had been roughing.

Tuesday, August 18, 2020, 12:37: Turbo pump on. 

Tuesday, August 18, 2020, 12:54: Vacuum @ 1.28e-05T & dropping. 

John Wong wrote:

John Wong wrote: March 23, 2011 12:30: Pumping down evaporator 18:24: IEVAPIG1 is reading at 4.55e-6 Torr.  The p/s will be turned on tomorrow since there is no ISAC Ops on site.  March 24 11:57: Evaporator has pumped down over night.  Vacuum @ 2.01e-6 Torr.   14:42: TGHT @ 20A, Vac @ 1.65e-6 Torr. 14:52: TGHT @ 40A, Vac @ 1.66e-6 Torr. 14:52: Auto Heating begins: TGHT to max 820A.  Incrementing if vac < 4.5e-5 Torr, backing off if vac > 6.5e-5 Torr.  16:04: TGHT @ 181A, vac @ 7.59e-6 Torr. 18:03: TGHT @ 420A, vac @ 4.71e-6 Torr.   (See attachment 2 for TGHT/IG1 for the past 4 hours) March 25, 11:15:  TGHT has been at 820A for 14hr.  Vac @ 4.27e-6 Torr.  (See attachement 3 for TGHT/IG1 for these past hours) 11:17:  Auto cooling down is in progress... 17:21:  Auto cooling down ended at TGHT ~100A.  The TGHT was tabbed down manually from 100A to zero.  (See attachment #4 for the cooling down progress)  All the pumps are off.  The evaporator will be vented next week.

 Evaporator Vented.

According to Jonathan Aoki, the electricians will be servicing another MCC which will result in loss of cooling water for about 8 hours starting at 16:00 March 30.  We shouldn't be running the evaporator or any condensers at that time.

It's the NON-ACTIVE water that will go off.  The evaporator is on sity water, so it will be OK.