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Message ID: 257     Entry time: Monday, October 26, 2015, 16:17
Author: Laura Lambert 
Target Material: Empty 
Target Oven W.O#: 41077-3 
Source: LP-SIS 
Status: Done 
Subject: temp measurements with 2xTa h.s on LPSIS (small block) container 

 Monday, October 26, 2015, 16:16

Container previously sintered with TaC coating and temperature measurements taken with 1x Ta heat shield [see elog ID# 256]

2x Ta heat shields on this container.

Loaded into evap2 and currently pumping down.


 Tuesday, October 27, 2015, 10:07

HS water valves opened up this morning, no leaks detected.

Tapped up manually to 35A.

Waited ~10min, vacuum stable

Initiating auto-ramp at 2.0A/min and 1.0A/min for the TGHT and TBHT respectively.

Final setpoints: 300A for the TGHT and 230A for the TBHT


 Tuesday, October 27, 2015, 13:54

Reached final setpoints.

IGP1 = 5.3e-7 Torr.

Tapping up manually to 1900C


Tuesday, October 27, 2015, 16:42

Tapped up manually to 1900C

TGHT = 455A, 7.66V

IGP1 = 9e-7 Torr

Will remain at 455A overnight and ramp-down in the morning.


Wednesday, October 28, 2015, 09:32 

TGHT remained at 455A for ~17hrs.

IGP1 = 4.3e-7 Torr.

OMEGA = 1888C

See attachment for raw data of temperature measurements.

Initiating auto-cool at 2.0A/min and 1.0A/min for the TGHT and TBHT respectively.


 Wednesday, October 28, 2015, 16:32

Vented and took out this afternoon.

Container looks good. 

See photos attached.


 

Attachment 1: temp_measurements_on_LPSIS_(small_block)_container.xlsx  20 kB  Uploaded Wednesday, October 28, 2015, 14:09
Attachment 2: 20151102_145643.jpg  2.389 MB  Uploaded Monday, November 02, 2015, 16:29  | Show | Hide all
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