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Entry  Wednesday, October 21, 2015, 17:39, John Wong, Empty, 41077-3, LP-SIS, In progress, Sintering TaC on LPSIS (small block) container 
    Reply  Thursday, October 22, 2015, 11:41, Laura Lambert, Empty, 41077-3, LP-SIS, In progress, Sintering TaC on LPSIS (small block) container 
       Reply  Thursday, October 22, 2015, 17:10, John Wong, Empty, 41077-3, LP-SIS, In progress, Sintering TaC on LPSIS (small block) container 
          Reply  Monday, October 26, 2015, 16:14, Laura Lambert, Empty, 41077-3, LP-SIS, Done, Sintering TaC on LPSIS (small block) container & temp measurements with 1xTa h.s temp_measurements_on_sintering_TaC_on_LPSIS_(small_block)_container.xlsx
Message ID: 256     Entry time: Monday, October 26, 2015, 16:14     In reply to: 255
Author: Laura Lambert 
Target Material: Empty 
Target Oven W.O#: 41077-3 
Source: LP-SIS 
Status: Done 
Subject: Sintering TaC on LPSIS (small block) container & temp measurements with 1xTa h.s 

John Wong wrote:

Laura Lambert wrote:

John Wong wrote:

 Wednesday, October 21, 2015, 17:35

This container is prepared for a backup UCx target (otherwise it will be used for development purposes).

The container is coated with TaC; one layer of Ta-heat shield is used. 

TGHT will be ramped up to reach 1900C (previous container had TGHT ramped up to 440A).  

TBHT will be ramped up to max 230A.  

Chamber is currently being pumped down.  

Heating can begin once the vacuum is good, currently at 4.8e-5 Torr. 


 

 Thursday, October 22, 2015, 11:36

HS water valves opened, no leaks detected.

Tapped up manually to 35A.

Vacuum stabilized, initiated auto-ramp at 0.2A/min and 0.1A/min for the TGHT and TBHT respectively.

Final setpoints TGHT = 300A, TBHT = 230A

IGP1 = 1.0e-6 Torr; TGHT = 45.18A, 0.17V; TBHT = 38.4A, 0.41V


 

 Thursday, October 22, 2015, 17:09

Pressure coming down to 1.5e-6 Torr. 

Increased ramping rate to 2A/min for both TGHT and TBHT.


 

 Monday, October 26, 2015, 16:10

Target container was ramped down over the weekend and taken out today.

Coating looks good.

Will add on another Ta layer and continue with temperature measurements.

See attachment for raw data.


 

Attachment 1: temp_measurements_on_sintering_TaC_on_LPSIS_(small_block)_container.xlsx  13 kB
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