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Message ID: 93     Entry time: Wednesday, April 30, 2014, 14:58
Author: John Wong 
Target Material: UC2 
Target Oven W.O#: 39165-9 
Source: LP-SIS 
Status: Done 
Subject: Conditioning UCx#9 

Wednesday, April 30, 2014, 14:50

The target container was previously coated with TaC and sintered in Evap 2.

The target is loaded with 250 discs of UCx (material from batch#09_06022014)

Total length = 9.3cm

The container is wrapped with 3 layers of Ta-heat shield, including the back block.

A regular TaC coated/sintered endcap is inserted on left, wrt to the ionizer tube pointing out of the page, so the right end is open with no cap to allow out-gassing.

(Did not use a D-cap... This worked for UCx#8. Need to be careful when handling the target!)

The chamber is being dumping down.

TGHT will be ramped up to 520A - keep heating at that current for ~4 to 5 hours.

Parameter setup: 5.0e-5 good vac, 6.0e-5 bad vac. The auto-ramping rate is set to 0.1A/min.


 Wednesday, April 30, 2014, 16:41

Vacuum at 1.5 e-5 Torr.  Stepped up TGHT to 25A.


 Wednesday, April 30, 2014, 17:42

Pressure 9.2 e-6 Torr.  Initiate auto-heating.


 Friday, May 16, 2014, 16:02

Conditioning complete. (see attachment)

End-caps need to be expended before assembly.


 

Attachment 1: UCx#9_final_conditioning.PNG  19 kB  Uploaded Friday, May 16, 2014, 17:03  | Show | Show all
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