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Entry  Friday, June 13, 2014, 14:57, Laura Lambert, Ta, 40282-2, LP-SIS, In progress, Conditioning Ta#43 target 
    Reply  Monday, June 16, 2014, 17:42, John Wong, Ta, 40282-2, LP-SIS, In progress, Conditioning Ta#43 target Ta#43_3.JPEG
       Reply  Tuesday, June 17, 2014, 10:14, Laura Lambert, Ta, 40282-2, LP-SIS, Done, Conditioning Ta#43 target 
Message ID: 137     Entry time: Tuesday, June 17, 2014, 10:14     In reply to: 136
Author: Laura Lambert 
Target Material: Ta 
Target Oven W.O#: 40282-2 
Source: LP-SIS 
Status: Done 
Subject: Conditioning Ta#43 target 

John Wong wrote:

Laura Lambert wrote:

 Friday, June 13, 2014, 14:53

Container is filled with 400 discs of Ta foils.

No Ta foil heat shield.

No caps inserted.

Chamber pumped down this morning.

HS cooling water valves opened, no leaks detected.

IG @ 5.8e-6 Torr.

TGHT max = 580A

TBHT max = 230A

Ramping rate 0.2A/min.


 Monday, June 16, 2014, 11:46

TGHT and TBHT reached their respective 580A and 230A over the weekend.

IGP1 currently at 3.2e-7 Torr.

Internal temp [measured using mikron, right side of EVAP2, pointed at discs inside] = 1375C


 

 Monday, June 16, 2014, 17:21

Further stepping up TGHT to 650A.

Temperature measured on target discs = 1542C. Vac @ 3.28e-7 Torr.

Initiate cooling down process; 2A/min for TGHT; 1A/min for TBHT


 

 

 

 

 Tuesday, June 17, 2014, 10:08

TGHT and TBHT reached 0A last night.

Turned off EVAP2

Venting chamber

Process Complete


 

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