<!-- Title: 16:10:38  Mon Apr 17 2006 -->
<!-- Crewchief: Willis+Pat -->
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<pre>Week of 17 April 2006</pre>


<!-- Date: Mon Apr 17 16:15:28 2006 -->
<p>We are in week 8 of the shutdown. The plans for the week are 
   <a href='http://ncdf67.fnal.gov/~tesarek/shutdown06/week08.html'> 
here.</a> The diamond radiation detectors are being installed 
on Monday and Tuesday. Three select TOF PMTs are being removed 
and replaced on Wednesday for the purpose of understanding the 
TOP pulse height degredation issue. 
</p>
<!-- Author: Willis+Pat -->


<!-- Date: Wed Apr 19 18:56:43 2006 -->
<p>Four diamond radiation detectors were installed Mondya on the 
   west side beam pipe just in front of the CLC and another 4 
   diamond detectors were installed on the east side.  
   The 4 plug CAEN SY527 HV mainframes with HV cards returned 
   from PREP last Friday are now in working order, and they should 
   be reinstalled when the plugs are closed. 
   Several more problem WHA PMTs were replaced. The work on 
   replacing 3 TOF PMTs continues: One was successfully replaced 
   today. 
</p>
<!-- Author: Willis+Pat -->


<!-- Date: Thu Apr 20 15:48:44 2006 -->
<p>20 April 2006 Run II PMG Meeting Summary 
<ul> 
<li>The 24Apr06, 0700-0730 hrs sitewide power outage to tie back in the     master substation has been postponed until May. This is because one of     the wooden power poles on the Meson roadway HV transmission line must     be replaced, and it will be done next week.</li> 
<li>The Tevatron shutdown work is going well: Some additional work 
    on TeV houses that was put off earlier, is now back on the work list. 
    TEL-2 should be fully 
    functional when beam returns. TEL-1 has been repaired, and will 
    be installed next week. This means TEL-2 can be used for its 
    intended use in tweaking beam-tunes, and TEL-1 as an abort gap scraper.</li> 
<li>D0 is also on schedule, and maybe a few days ahead of schedule. 
    They got their L0 silicon detector cabled up, and are in the process 
    of checking out the readout.</li> 
</ul> 
</p>  
<!-- Author: Willis+Pat -->


<!-- Date: Fri Apr 21 16:46:04 2006 -->
<p>The replacement of the 3 TOF PMTs was completed early today. The COT 
   group also investigated some low voltage problems as well. The pre-plug 
   closing checkout of the SVX uncovered no problems. The checkout of 
   the COT has begun: The attachment of the COT baggies, the N2 purge of 
   the system for a few days, and then followed by a HV checkout. It 
   appears we are on track for a plug closing on Monday, or Tuesday. 
</p> 
<p>21 April 2006 9AM AD Shutdown weekly meeting summary. 
<ul> 
<li>The site wide power outage originally scheduled for 24Apr06 has 
    been postponed until 01May06 (time is still 0700-0730 hrs). This 
    is contingent on the Meson HV line power line pole replacement 
    being completed by next Friday.</li> 
<li>The accelerator work is on schedule -- no-one is yet agitated.</li> 
<li>Tevatron status. The magnet shim (smart bolt) work is done. 
    The Kautzky valve poppet replacement is about 60% done. The TeV 
    house work is almost done: 5 of 6 done. The detailed plan for 
    repositioning CDF low beta quads to move the beam down by 1mm 
    will be finalized on 25Apr06: There are actually many solutions 
    and the TeV group is now working to pick out an operationally 
    robust one.</li> 
</ul> 
</p>  
<!-- Author: Willis+Pat -->