<!-- Title: 09:58:12  Mon Jan 16 2006 -->
<!-- Crewchief: Willis+Pat -->
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<pre>Week of 16 January 2006</pre>


<!-- Date: Mon Jan 16 10:03:45 2006 -->
<p>TeV warmup is in progress. No collision hall work is to be  
   done today on the MLK holiday. The only major work is being 
   done by the roofers, who are continuing with their off and on 
   roofing job of the B0 building roof. Planning and decisions 
   for upcoming jobs in the collision hall over the next two 
   weeks of down time will be done on Tuesday, 17Jan06. 
</p>
<!-- Author: Willis -->


<!-- Date: Tue Jan 17 17:37:01 2006 -->
<p>TeV A4 should be warm and ready for repair work to commence 
   later this evening. The work and cooldown will happen this week 
   and next, and the TeV is expected to be cold for TeV startup  
   on 26Jan06. The startup will take several days. The Accelerator 
   group does not believe there are going to be any unexpected 
   delays. The low luminosity running will likely be done at the 
   end of the month.</p> 
<p>The collision hall will be in supervised access until 26Jan06. 
   Most planned work in the hall is expected to begin tomorrow, 
   when some of the steel gets moved.</p> 
    
<!-- Author: Willis+Pat -->


<!-- Date: Wed Jan 18 19:25:10 2006 -->
<p>The search for the TeV leak in A4 is underway. No external He 
   leak was found, so the leak is likely to be internal to a  
   magnet. The estimate for when the TeV will be cold is still 
   26Jan06. Pbar studies are also continuing.</p> 
<p>We are in supervised access, and both muon walls and both 
   toroids have been moved out. The new L3 farm PCs are being 
   installed in the 1st floor by the vendor. Most detector work 
   is the fixing of "lower priority" problems that have built 
   up. The biggest job is for the XFT upgrade -- they will be 
   diagnosing and fixing the XTC2 system fiber readout problems, 
   one corner of the detector at a time. 
</p> 
<!-- Author: Willis+Pat -->


<!-- Date: Thu Jan 19 16:02:24 2006 -->
<p>TeV update: The leak at A44 is most likely a failed insulating vaccuum 
   o-ring, and not a magnet. If so, this shortens the shutdown by about 
   2 days, and the TeV cold date will be 24Jan06. On our end, the 
   installation of the new L3 farm PCs in the 1st floor should be complete 
   by the end of the day or tomorrow. These PCs still need to be burned in 
   and made operational. 
</p> 
<p>Run II PMG meeting, March 2006 shutdown summary: The shutdown will now 
   begin 27Feb06 (a Monday) and end on 2Jun06 (not a Monday???). There will 
   be two site-wide power outages for master substation work: 3Apr06 
   (remove substation) and 24Apr06 (put back substation). The power should 
   be out from 0700-0730 hrs. There will also be feeder work 
   on 49, 46A, and 46B (we get power from them): This should not affect us as there is 
   to be a "parallel" switchover to another feeder (we shall see..) 
   The zebra mussels once again took center stage: the Casey pond water 
   temperature needs to be between 65-75 degrees F for the optimal "kill 
   rate". This means the cooling water flushing cannot be done too early 
   and there are questions about this delaying the end of the shutdown. 
</p>  
<!-- Author: Willis+Pat -->


<!-- Date: Fri Jan 20 16:25:37 2006 -->
<p>TeV status: The A44 failed o-ring has been replaced, and leak checking is 
   in progress. The TeV is on-track to be cold on 24Jan06 if all goes well. There is one last leak, and the 
   leak checking is now at our low beta quads, 
   so keep your fingers <a href= 
'http://www-bd.fnal.gov/cgi-mach/machlog.pl?nb=runco&action=view&page=576&time=152146'>crossed.</a> 
   There could be collisions by next Friday, but there are 
   a lot of Accelerator activities planned for the week of <a href= 
'http://www-bd.fnal.gov/cgi-mach/machlog.pl?nb=runco&action=view&page=576&anchor=121604'>23Jan06</a> that appear to need to go as planned. 
</p> 
<p>The XFT upgrade group has done a lot of work, and it looks 
   more like <a href= 
'/cgi/elog/det-system-elog.pl?nb=xft&action=view&page=30&frame=2&anchor=22:33:29'>commissioning.</a> 
   We will be doing cosmic ray running over the weekend with 
   the solenoid and COT as per request of the XFT upgrade group, to 
   check out the change to the axial XTC timing required for the 
   stereo upgrade. 
   The COT group is working on several operational problems. 
   They have isolated the cause of recent super layer trips (eg, SL6) to 
   some issues in the crowbar system, and have fixed it. We also 
   continue to work on problem detector channels in <a href= 
'/cgi/elog/elog.pl?nb=2006&action=view&page=59&frame=2&anchor=12:02:17.069'> 
   calorimetry</a> and muon CMP problems on the walls and up top of the 
   detector. We need to be done with supervised access collision hall work by 
   about 1200 hrs, 24Jan06, as the AD plan is to search and secure our hall by the 
   evening shift. 
</p>  
<!-- Author: Willis+Pat -->


<!-- Date: Mon Jan 23 17:24:56 2006 -->
<p>Weekend Summary for 21-22 January 2006: We anticipated a weekend 
   of cosmic ray datataking (for the XFT upgrade) with noone in 
   the collision hall. However, there was a TeV A4-sector  
   atmosphere to insulating vaccuum leak in the bottom of the 
   CDF Q2 
   low beta quad bellows -- inside our collision hall alcove. 
   It took a while to track down, and involved us moving the 
   steel shielding blocks surrounding the quads.  
   We removed shielding 
   steel from the quads on both Friday evening, and Saturday 
   afternoon. About 8 steel blocks were removed. The leak was 
   fixed on Sunday, 22Jan06, at about 0800 hrs, with A4 cooldown 
   starting about 2000 hrs. We also did take cosmic ray runs, 
   and did SVT upgrade work.   
</p>
<!-- Author: Willis+Pat -->