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Message ID: 76     Entry time: Tuesday, April 09, 2013, 17:06
Author: Isaac Earle 
Category: Repair 
Type: Target 1 
Specific: Target 
Subject: T1 Target Electronics Check 

The T1-MK1 target protect and profile monitor electronics were 'blip' tested by Bill Rawnsley on April 5, 2013.  The response from the profile monitor appeared normal, however the protect monitor response was very weak.  After various debugging it was found that the 9 pin connector on the target on the vacuum side of the vacuum flange had become disconnected from the vacuum flange feed-through.  It is suspected that this happened while changing vacuum flange seals in the hot cell.  The connector was plugged in to the feed-through and reassembled.  The monitor was retested on April 8th and gave a normal response.

The lower air amplifier was started and actuation of the T1 profile monitor tested from the control room:  functioning normally.

Unused cables and hoses, concrete pieces, and various other garbage was removed from the top of the T1 monolith.  Spiro Wrap around the T1 profile monitor cable was replaced as it had degraded.

The T1 target is now ready for beam.

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