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Message ID: 226     Entry time: Fri Feb 12 14:42:06 2010
Author: Damien Gallop 
Type:  
Category:  
Subject: OLIS Shutdown in progress 

Supernanogan cart removed from Faraday cage to dock today. Some beam safety tests on FC6 in progress presently. FC3 was already removed for replacement.

Optics Photos: Lots taken; selected ones here as time permits.

3-Way Switch (DSCN7285.jpg & DSCN7286.jpg) looks pretty good. There is some discoloration on a downstream insulator, but far from worrisome. The elements hold HV just fine.

Q1 (DSCN7312.jpg& DSCN7316.jpg) looks good too. Insulators survived well. Note the interesting halo pattern on the backside of the downstream skimmer plate.

Q2 (DSCN7317.jpg) is in good condition with some plating on insulators.

Q3 (DSCN7330.jpg & DSCN7350.jpg) is complex. Some marked plating has occurred on a few of the insulators from the backside. There is an interesting deposit of metallic material, probably magnesium, on the backside of the downstream skimmer, right behind the quads. A similar depositing is also visible in last year's Shutdown photos. The water-cooled collimator in front of the quads has significant beam etching, which could have been present some time ago (cf. a year ago, DSCN6876.jpg).

Attachment 1: DSCN7285.jpg  1.423 MB  Uploaded Wed Feb 17 09:48:40 2010  | Hide | Hide all
DSCN7285.jpg
Attachment 2: DSCN7286.jpg  1.276 MB  Uploaded Wed Feb 17 09:49:10 2010  | Show | Hide all
Attachment 3: DSCN7312.jpg  388 kB  Uploaded Thu Feb 18 17:10:52 2010  | Show | Hide all
Attachment 4: DSCN7316.jpg  345 kB  Uploaded Thu Feb 18 17:12:31 2010  | Show | Hide all
Attachment 5: DSCN7317.jpg  1.243 MB  Uploaded Thu Feb 18 17:15:07 2010  | Show | Hide all
Attachment 6: DSCN7330.jpg  1.347 MB  Uploaded Thu Feb 18 17:32:27 2010  | Show | Hide all
Attachment 7: DSCN7350.jpg  1.432 MB  Uploaded Thu Feb 18 17:37:58 2010  | Show | Hide all
Attachment 8: DSCN6876.JPG  579 kB  Uploaded Thu Feb 18 17:42:04 2010  | Show | Hide all
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