John Wong wrote:

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.

 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