<!-- Title: 16:56:09  Mon Dec 12 2005 -->
<!-- Crewchief: Willis+Pat -->
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<pre>Week of 12 December 2005</pre>


<!-- Date: Mon Dec 12 17:18:59 2005 -->
<p>On Sunday, 11Dec05, we made a controlled access from 0623-0843 
   hrs to fix the COT/XFT Ansley cable (SL4, cot10?) problem. The 
   cable was not hooked up: a victim of the stereo track trigger 
   installation work over the past week. We also discovered muon 
   trigger/TDC problems from the power outages, and fixed them 
   by power cycling the problematic muon TDC crates. 
</p> 
<p>TeV colliding beam has been delayed by a series of problems 
   today: 
   TeV F-sector <a href = 
'http://www-bd.fnal.gov/cgi-mcr/elog.pl?nb=2005&action=view,&page=937&anchor=122718'> 
   HV703 ground fault</a>, then followed by a B0Q3 power supply 
   problem. The TeV came back about 1700 hrs, and so 
   there should be shot setup in the evening shift. We are 
   ready and awaiting a store. 
</p>
<!-- Author: Willis+Pat -->


<!-- Date: Tue Dec 13 17:13:33 2005 -->
<p>Store 4543 starts at 0040 hrs, with an initial luminosity of 
   42e30. It ends at 0238 hrs with a quench at E1, and it is 
   believed the loss of the store was due to an instability.  
   We were off for the 1st hour of the store due to xtrp00 
   problems, whose exact nature is not understood. 
   We recorded 0.12 pb-1 at 49% efficiency. Some low level XFT 
   upgrade SLAM board <a href= 
'/cgi/elog/elog.pl?nb=2005&action=view&page=1040&frame=2&anchor=14:41:22.508'> 
   problems</a> were observed with collisions, and the XFT 
   upgrade group will sort this out during the next store. 
</p> 
<p>Store 4547 was lost due to a quench at A1 about 1650 hrs 
   during the 2nd scraping. No signficant losses were recorded. 
   The initial luminosity would have been about 70e30. The MCR 
   says there could be another shot setup at 2100 hrs. 
</p>  
<!-- Author: Willis+Pat -->


<!-- Date: Wed Dec 14 19:05:29 2005 -->
<p>Store 4549 starts at 0447 hrs, with an initial luminosity 
   of 53e30. Something is unusual in that the D0 luminosity is 
   44e30. We start taking data quickly, but silicon is not 
   included. We were down for about 20 min about an hour into 
   the store after a COT SL6 HV trip and an EVB error. Running 
   was fairly smooth. COT SL6 tripped twice. A TOF HV trip at 
   1530 hrs resulted in a 15 down time. The store was lost 
   at 1616 hrs, due to a B11H separator spark. Yes -- that is 
   the separator that sparked on 21Nov05... The TeV 
   quenched at E1 and F4. The silicon did not receive much 
   of a dose. We recorded 1.0 pb-1 at 86% efficiency. 
</p> 
<p>The TeV is in recovery, and B11H will likely need more 
   conditioning. 
   We begin controlled access at 1736 hrs to replace the 
   <font color=red><em>last</em></font> COT crate of TDCs 
   with upgrade TDCs. 
</p>
<!-- Author: Willis+Pat -->
<!-- Comment: Wed Dec 14 19;44;43 comment by...Willis -->
<p>Success: All 20 of 20 COT TDC crates now have upgraded
   TDCs; only the EM and HAD timing TDCs (1st floor) to go.
   Good job by the RunIIb TDC upgrade crew!
</p>


<!-- Date: Thu Dec 15 16:06:59 2005 -->
<p>TeV B11 separator conditioning still ongoing, and this is 
   expected to continue until 1000 hrs, 16Dec05. We just continue 
   to exercise the DAQ. No new access jobs are planned, and only 
   short ones to fix problems that come up will be allowed. 
</p>
<!-- Author: Willis+Pat -->


<!-- Date: Fri Dec 16 16:17:14 2005 -->
<p>Store 4553 starts at 1455 hrs, with an initial luminosity 
   of 108e30 (D0 lum = 89e30, it is still off). Silicon will be 
   out for this store. At about 1416 hrs (the ramp and squeeze 
   phase) we got a silicon integrated dose alarm<a href= 
'/cgi/elog/det-system-elog.pl?nb=silicon&action=view&page=279&frame=2&anchor=15:06:11'> 
   (>20 Rad/sec).</a> This is similar to the silicon integrated 
   dose alarm on store 4499 (13Nov05). At 1444 hrs, TeV RF station 
   TRF8 tripped off. After making sure everything is working,  
   we are doing trigger and XFT upgrade tests while the experts 
   are here. When that is done, we will take no-silicon data. 
</p>
<!-- Author: Willis+Pat -->


<!-- Date: Mon Dec 19 17:10:19 2005 -->
<p>Weekend report: 17-18 Dec 2005 
<ul> 
<li>Saturday, 17Dec05: Store 4553 is terminated normally at 1602 hrs. 
    We recorded 2.6 pb-1 at 73% efficiency, but the silicon was not 
    included. There were a series of trigger table tests during the first 
    half of the store. Most problems were small, and the biggest was a 
    30 minute down time from a TOF HV trip. Many L2 decision timeouts due 
    to ccal13/smx was another source of significant downtime. 
    Store 4554 starts at 1909 hrs, with an initial luminosity of 92e30. 
    This is a combined Accumlator and Recycler pbar shot, as the Recycler 
    has problems with its vertical dampers and cannot hold more than 
    60e10 pbars. We got another silicon <a href= 
'/cgi/elog/det-system-elog.pl?nb=silicon&action=view&page=279&frame=2&anchor=19:30:25'>integrated dose alarm</a> 
    during the squeeze. The part of the alarm that went was the 19 Rad in a 
    minute part, but it again looks like this dose was in under a second. 
    It looks like it took 0.5 hrs to start up due to some problem the shift 
    crew had with the EVB. The silicon was included about 1.5 hrs into the 
    store. Most problems were small 5-10 minute ones. Again, we had 
    many L2 decision timeouts due to ccal13/smx.</li> 
<li>Sunday, 18Dec05: Store 4554 ends with a TeV quench at F4 due to a D11H 
    separator spark. (Luckily, not B11H.) There were no silicon problems 
    due to this abort. We recorded 2.2 pb-1 with 83% efficiency. 
    Store 4555 starts at 1932 hrs, with an initial luminosity of 102e30 (D0 
    lum is 84e30). This is a combined Accumlator and Recycler pbar shot, as 
    the Recycler is still sick. We had another silicon integrated dose alarm 
    during the squeeze. Lots of problems during the first 4 hours: COT SL4   
    HV trip, L2 decision timeouts due to ccal13/smx, and SVT problems.</li> 
</ul> 
</p>  
<!-- Author: Willis+Pat -->