Monday, September 30, 2019, 10:54
After being exposed to air for 1.5 hours,
the target UCx28 that was previously conditioned , was set again in the EVAP1 for re-conditioning.
The UCx28 was wrapped with 3 new Ta-heat shields and placed in the EVAP1,
EVAP1 is currently pumping down.
Tuesday, October 1, 2019, 08:33
The heating conditions are:
TGHT= 1 A/min to 430 A
TBHT= 1 A/min 230 A
Initial vacuum IGP1 = 1.22193-6 Torr
Since the ends of the target container are crystallized and the voltage is starting to vary, the target was heated only for 3 hours instead of 4.
The cooling conditions are the same as the previous conditioning:
TGHT= -1 A/min
TBHT= -0.5 A/min
Wednesday, October 02, 2019, 11:01
EVAP1 was vented with Ar and the target was removed form EVAP1 and assembled,
the assembly was placed in the glove box.
The tantalum cap used to collect the outgassed material from the target container was not fully coated. |