Thursday, August 25, 2022, 10:06
Target container is loaded with 379 Discs of TiC for Target and 5 extra discs for analysis on left end
Target length = 12.5
3 Ta foil heatshields and on TaC coated Ta spring on right side
Total weight including heatshields and spring = 1551.4 g Final total weight = 1545.5 g
Final power should be ~10988 Watt
TGHT ramp up to 820A, and TGHT to 300A at 0.1A/min.
IGP1= 7.7e-7 Torr
Good vacuum =3.0e-05 Torr
Bad vacuum = 5e-04 Torr
Initial TGHT and TBHT autoramped @1A/min to 50A
TBHT mas 230A
TGHT max depends on final power
Thursday, August 25, 2022, 11:17
Start autoramp at 1A/min to 80A on both TGHT and TBHT
Thursday, August 25, 2022, 11:54
leaving at 80A until pressure stops rising
Thursday, August 25, 2022, 22:29
left to autoramp to 230A TBHT and 750 A TGHT since approximately 2:00 pm
Will leave ramping @1A/min to 750 A on TGHT
TBHT currently at 230A
Friday, August 26, 2022, 07:27
TGHT = 850A, 9.3V
Started autoramp to 850A at 1A/min for TGHT
TBHT held at 230A
OMEGA = 1584C
Friday, August 26, 2022, 09:34
Target running at ~820A, 13.1 V since 9
Cooling to start between 1:15 to 1:30 pm
OMEGA reads 1668 C at top current
current reading oscillates between 812A and 828A and 13.1V to 13.2V.
Monday, August 29, 2022, 12:21
Cooling at -2A/min for TGHT and -1A/min TBHT started on time on Friday August 26th.
Target remained under vacuum after cooling, over the weekend.
Target removed this morning and looks good. 5 discs removed for analysis
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