Mon Apr 18 18:10:53 2011: 

FEBIAD-HP target (w.o 38295-8) is coated with TaC (previously prepared on Feb 15, 2011).  This target will be used for the SiC run in Oct, 2011.  The target is wrapped with 3 Ta-heat shields and is in the evaporator.  Pumping down of the evaporator is in process, currently vac @ 3.66e-5 Torr.   

Tue Apr 19 11:00:36 2011: Evaporator has been pumped down over night (~17hrs).  Vac is currently at 1.84e-6 Torr (See Attachment#1: pumping down curve).

Tue Apr 19 11:09:49 2011: TGHT @ 30A/0.086V, Vac @ 1.82e-6 Torr.

Tue Apr 19 11:13:05 2011: TGHT @ 60A/0.184V, Vac @ 1.75e-6 Torr.

Tue Apr 19 11:14:06 2011: Auto-heating will begin @ 0.5A/min until vacuum is stable then the auto ramping rate will increase. (See Attachment#2: parameter setup).

Tue Apr 19 14:27:08 2011:  TGHT is currently at 148A/0.65V, vac @ 1.92e-5 Torr.  The pressure spiked up to 7.7e-5 Torr (trip @ 8e-5 Torr) at ~124A.  The current was lowered down to 120A to allow the pressure to come down (See Attachment#3: Vac_curve).   Auto-heating rate has changed to 1A/min. 

Wed Apr 20 10:08:52 2011:  TGHT reached to 700A and stayed for about 5 hours.  ISAC Ops helped to start the auto cooling down process.  (See Attachment#3: Overall Process). 

Tue Apr 26 11:12:36 2011

Result:  The dried coating isn't looking the same like the rest of the target.  Typically, the finished coating looks gray.  But a layer (or line) of light brown coating can been seen from one end of the target to the other end. 

--> This target was heated up to 700A.  Will try to re-heat this again to 820A. 

Re-heating the Target

Tue Apr 26 12:44:30 2011:  Target is wrapped with 3 Ta-heat shield and is in the evaporator which is currently being pumped down. 

Tue Apr 26 17:39:40 2011:  TGHT was tapped up to 70A before began with auto-heating @ 2A/min to 820A max.  Currently TGHT at 204A/1.0V, Vac @ 3.97e-6 Torr.  ISAC Ops will help to start auto cooling at 04:00 on April 27.

Wed Apr 27 12:26:41 2011: Auto cooling completed.  P/S off and evaporator is vented, (See Attachment#5: Overall Process_2).  Target oven looks good; finished surface looks gray, as expected.