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Entry  Monday, January 20, 2014, 16:35, Laura Lambert, Empty, Ta-Target boat, , , Sintering Ta target boat with TaC coating 
    Reply  Tuesday, January 21, 2014, 11:33, Laura Lambert, Empty, 40282-4, TARGET BOAT, , Sintering Ta target boat with TaC coating 
       Reply  Tuesday, January 21, 2014, 11:56, Laura Lambert, Empty, 40282-4, TARGET BOAT, , Sintering Ta target boat with TaC coating 
          Reply  Wednesday, January 22, 2014, 09:49, Laura Lambert, Empty, 40282-4, TARGET BOAT, , Sintering Ta target boat with TaC coating 
             Reply  Wednesday, January 22, 2014, 13:46, Laura Lambert, Empty, 40282-4, TARGET BOAT, , Sintering Ta target boat with TaC coating 
                Reply  Wednesday, January 22, 2014, 15:13, John Wong, Empty, 40282-4, TARGET BOAT, , Sintering Ta target boat with TaC coating 
                   Reply  Wednesday, January 22, 2014, 18:22, John Wong, Empty, 40282-4, TARGET BOAT, Problems, Sintering Ta target boat with TaC coating (IEVAP2:TBHT2 water signal problem) Screen_Shot_2014-01-22_at_6.10.50_PM.pngTargetboat_heatingup2.JPEG
                      Reply  Thursday, January 23, 2014, 16:22, Laura Lambert, Empty, 40282-4, TARGET BOAT, Problems resolved, Sintering Ta target boat with TaC coating IMG_20140123_144725917.jpgIMG_20140123_144736614.jpg
                         Reply  Friday, January 24, 2014, 14:25, Laura Lambert, Empty, 40282-4, TARGET BOAT, In progress, Sintering Ta target boat with TaC coating 
                            Reply  Monday, January 27, 2014, 10:59, Laura Lambert, Empty, 40282-4, TARGET BOAT, In progress, Sintering Ta target boat with TaC coating 
                               Reply  Tuesday, January 28, 2014, 11:57, Laura Lambert, Empty, 40282-4, TARGET BOAT, In progress, Sintering Ta target boat with TaC coating IMG_20140128_111526059.jpgIMG_20140128_111456815.jpg
                                  Reply  Tuesday, January 28, 2014, 13:09, Laura Lambert, Empty, 40282-4, TARGET BOAT, Done, Sintering Ta target boat with TaC coating 
Message ID: 106     Entry time: Wednesday, January 22, 2014, 09:49     In reply to: 105     Reply to this: 107
Author: Laura Lambert 
Target Material: Empty 
Target Oven W.O#: 40282-4 
Source: TARGET BOAT 
Status:  
Subject: Sintering Ta target boat with TaC coating 

Laura Lambert wrote:

Laura Lambert wrote:

Laura Lambert wrote:

 Monday, January 20, 2014, 16:32

A new target boat was sprayed with TaC coating and let dry this morning.

The target boat is NOT wrapped with Ta-heat shield.

The boat was installed in Evap#2, chamber is currently being pumped down overnight.

 

 Tuesday, January 21, 2014, 11:10

Chamber was pumped down to ~2e-7 Torr. HS cooling water valves were opened, no leaks detected.

TGHT was stepped up to 35A, voltage max set at 13V. TBHT currently @ 0A.

Waited ~20min, current stabilized, vacuum started to drop, auto-ramp initiated at 2.0A/min and max setpoint to 700A.

Good vacuum: 3.00e-5 Torr, Bad vacuum 4.00e-5 Torr.

 

 Tuesday, January 21, 2014, 11:51

Vacuum was grumpy and was well on it's way to tripping off [reached 5e-5 Torr], auto ramping was stopped at ~95A and quickly stepped down to 90A to avoid tripping it off.

Allowed vacuum to settle back down to 2.3e-6 Torr. Auto ramping changed to 0.2A/min and re-started.

 close-call!

 

 Wednesday, January 22, 2014, 09:46

TGHT has been slowly ramping up overnight at a rate of 0.2A/min.

IGP1 = 2.9e-7 Torr, TGHT = 342A; stepping ramping rate up to 2.0A/min.

 

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