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Message ID: 7     Entry time: Friday, June 03, 2011, 09:16
Author: John Wong 
Target/No.#: Ta#37 
Source: LP-SIS 
Station: ITW 
Module: TM1 
Target Oven W.O#: 38634-5 
Heat Shield W.O#: 36833-7 
Status: Spent 
Subject: Target is done 

 Fri Jun 3 12:40:30 2011

Ta#37-LP-SIS (w.o#38634-5)

Filled with 400 Ta foils (25/pk), 4.0 cm in length.  Total mass + Ta wire = 42.32g.  The heat shield was assembled and tested, and the standard salts were added.  Target was installed in the test stand on Jun 1, 2011.  

Fri Jun 17 09:19:46 2011: The following salts have been added: Li, Na, Rb @ 10uL, K @ 5uL, Cs @ 15uL, and Be @ 10uL.

Wednesday, July 06, 2011, 14:08:  TM1 is still under repairing.  It was tested at the test-stand. Target is on the shelve and ready to be used.

Tuesday, July 26, 2011, 15:58:  Salt added before going into the hotcell: Li,Na,Rb,K,Cs.  Target is ready to be used for TM1 test.

Wednesday, July 27, 2011, 10:48:  It was found that the extraction electrode had some arc marking on it (see attachment: EE).  Investigating... 

Wednesday, July 27, 2011, 12:51: After further investigation on the extraction electrode,  we found some black and blue(or green) deposit on the outside surface and inside of the EE.  This deposit is most likely copper oxide, which formed during the HV test.  The EE was removed, and wiped clean with methanol.  (see attachment: EE_CuO).  This target will be used in TM1. 

 

Friday, August 26, 2011, 09:48:  As per Friday Aug 26 TIS meeting, bNMR is very satisfied with the beam; the count rate is very stable.

 

Attachment 1: EE.JPG  231 kB  Uploaded Wednesday, July 27, 2011, 11:54  | Hide | Hide all
EE.JPG
Attachment 2: EE-CuO.jpg  345 kB  Uploaded Wednesday, July 27, 2011, 13:52  | Show | Hide all
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