March 23, 2011

12:30: Target oven is wrapped with 3 Ta-heat shields.  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)