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| John Wong wrote: |
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Tuesday, March 04, 2014, 15:43
Theses endcaps (4) were previously sinterred in Evap#2 but some surfaces were not fully sinterred. (See Evaporator2 E-log ID119: https://elog.triumf.ca/TIS/Evaporator_2/119)
The endcaps are inserted in a target boat wrapped with 3 heat-shields.
Chamber is currently being pumped down.
TGHT will be rampped up to 580A and heat for >4hrs.
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Wednesday, March 05, 2014, 10:20
IGP1 = 9.2e-7 Torr.
TGHT was stepped up to 35A and stabilized after half an hour.
Auto-ramp initiated at 2.0A/min, max setpoint = 580A.
Vacuum started to climb too fast, auto-ramp aborted.
Will step up manually...
Wednesday, March 05, 2014, 12:18
Slowly stepped up to 100A manually.
Vacuum stable.
Initiating auto-ramp at 1.0A/min
Wednesday, March 05, 2014, 13:17
IGP1 = 9.8e-6 Torr.
Current = 200A
Vacuum stable.
Stepping ramping rate up to 2.0A/min.
Wednesday, March 05, 2014, 16:12
IGP1 = 4.6e-5 Torr, TGHT = 548A
Stopped auto-ramp to allow vacuum to settle back down.
Waited ~10min
IGP1 = 3.6e-5 Torr
Re-initiating auto-ramp at 2.0/min
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